Assembling and welding equipment for explosion door structure

Abstract

The invention relates to the technical field of explosion door welding, in particular to explosion door structure assembling and welding equipment which comprises a base, a guiding and locking assembly, an angle correcting mechanism and a locking and abutting mechanism. Primary positioning of the included angle of the rib plate is achieved through the angle correction mechanism, secondary correction is achieved in cooperation with the correction locking assembly, it is guaranteed that the included angles of the rib plate and the two sides of the fan-shaped plate are consistent, the whole rib plate is evenly distributed after splicing, stress is balanced during explosion impact, and the impact resistance of the explosion door is improved; the arc-shaped plates are positioned, clamped and fixed on the two sides, welding seams are prevented from contracting to pull the rib plates to incline and bend, it is guaranteed that the included angle between each rib plate and the panel is 90 degrees stably, and the structural stability of the framework is improved.

Description

Technical Field

[0001] This invention relates to the field of explosion-proof door welding technology, and specifically proposes an explosion-proof door structure assembly and welding equipment. Background Technology

[0002] Explosion-proof doors for vertical shafts (also known as explosion-proof covers for vertical ventilation shafts or MFBL explosion-proof doors) are the core safety devices at the entrance of coal mine return air shafts. They are used to protect the main ventilation fan and ensure the safety of the ventilation system in the event of a gas / coal dust explosion. The typical structure of a vertical shaft explosion-proof door is conical, and the door body is assembled and welded from multiple fan-shaped steel plates, multiple stiffening plates, and arc-shaped plates.

[0003] Currently, to reduce construction safety risks and minimize on-site welding of large components, large vertical shaft explosion-proof doors are manufactured using prefabricated structural modules. These modules are lightweight and compact, facilitating transport from the processing workshop to the mine shaft entrance. Only splicing welding and final assembly are required at the shaft entrance, significantly improving the convenience of on-site installation of the explosion-proof doors. However, the welding of these prefabricated structural modules for vertical shaft explosion-proof doors often relies on manual labor, which can lead to the following problems: 1. When manually fixing the reinforcing ribs, the ribs are only simply fixed on one side. During welding, they are susceptible to tilting and bending due to weld shrinkage, making it impossible to maintain a stable 90-degree perpendicularity between the ribs and the panel, severely reducing the overall structural stability.

[0004] 2. Manually adjusting the position of the stiffening plates by relying solely on visual inspection and simple tools makes it difficult to accurately control the included angle value, resulting in inconsistent included angles between the two radial end faces of the stiffening plates and the fan-shaped plates. Consequently, after the prefabricated structural modules are spliced ​​and welded, the stiffening plates on the explosion-proof door of the shaft are unevenly distributed. When the explosion-proof door is subjected to an explosion impact, some stiffening plates will bear excessive loads, reducing the overall impact resistance.

[0005] 3. The positioning, clamping, and welding processes are independent of each other and have not formed an integrated operation process. The welding trajectory relies on manual control, which can easily lead to problems such as uneven penetration and poor weld formation. It is impossible to guarantee the consistency of welding quality and construction. The production efficiency and assembly accuracy are difficult to meet the requirements of high-standard projects. Summary of the Invention

[0006] In view of the above problems, embodiments of the present invention provide an explosion-proof door structure assembly and welding equipment to solve the technical problems in the related art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an explosion-proof door structure assembly and welding equipment, wherein the explosion-proof door structure includes a fan-shaped plate, a stiffening plate and an arc plate, and the welding equipment includes: a base, a guide locking component, an angle correction mechanism and a locking and pressing mechanism.

[0008] The base consists of a frustum and a sector, with the top of the frustum higher than the top of the sector. A locking and pressing mechanism and a guide locking assembly are installed on the base. The guide locking assembly is used to guide the placement and locking of the sector plate. An angle correction mechanism is installed on the frustum and is used to initially correct the included angle between the positioning rib and the two sides of the sector plate.

[0009] The locking and pressing mechanism includes a T-shaped frame and a lifting drive source mounted on the base. The horizontal section of the T-shaped frame is arc-shaped. The lifting drive source drives the T-shaped frame to move up and down. A correction and locking component is installed at the bottom of the vertical section of the T-shaped frame to correct the stiffener plate and press it against the fan-shaped plate. A positioning and clamping component is provided at the end of the horizontal section of the T-shaped frame. The positioning and clamping component cooperates with the horizontal section of the T-shaped frame to position and clamp the arc-shaped plate and press the arc-shaped plate against the fan-shaped plate.

[0010] The vertical section of the T-shaped frame has L-shaped guide grooves on both sides. A welding mechanism is installed on the L-shaped guide grooves. The welding mechanism is used to weld the weld between the fan-shaped plate, the stiffening plate and the arc plate.

[0011] The angle correction mechanism, locking and pressing mechanism and welding mechanism work together to integrate the positioning, correction, clamping, pressing and welding of the fan-shaped plate, stiffener plate and arc plate, and perform double positioning assembly of the included angle between the stiffener plate and the two sides of the fan-shaped plate.

[0012] In one possible implementation, the guide locking assembly includes a locking element and two sets of guide elements arranged in a V-shape. Each set of guide elements consists of multiple guide rollers evenly arranged radially along the fan-shaped platform. The guide rollers are rotatably connected to the fan-shaped platform via bearings, and the axis of the guide rollers is perpendicular to the fan-shaped platform. The locking element is installed on the fan-shaped platform to press the fan-shaped plate against the side wall of the frustum and lock the fan-shaped plate.

[0013] In one possible implementation, the locking element includes a storage slot on the fan-shaped platform, a rotating shaft rotatably connected within the storage slot, and push posts evenly arranged along its axial direction mounted on the side wall of the rotating shaft. The push posts are used to push the fan-shaped plate against the side wall of the frustum. The multiple push posts are arranged in an arc shape on the side wall of the rotating shaft, and when the rotating shaft rotates, the multiple push posts all abut against the arc-shaped side wall of the fan-shaped plate.

[0014] In one possible implementation, the angle correction mechanism includes a mounting groove on the side wall of a frustum located at the top of a sector. Two rotating shafts are rotatably connected in the mounting groove. The two rotating shafts are symmetrically arranged along the axis of the frustum. A connecting plate is fixedly sleeved on the rotating shaft. A positioning plate is fixedly installed on the side wall of the connecting plate. A rotation drive source is provided on the frustum to drive the two rotating shafts to rotate in opposite directions. The stiffener, with the cooperation of the two positioning plates, maintains the same angle between the two sides of the sector plate.

[0015] In one possible implementation, the positioning and clamping assembly includes a bracket mounted on the top of the horizontal section of the T-shaped frame via multiple ribs. The bracket consists of an inverted L-shaped seat and a support plate mounted on the bottom of its vertical section. The bracket is fixedly connected to the T-shaped frame via multiple ribs. The vertical cross-section of the arc-shaped plate is inverted L-shaped. The support plate is used to support the horizontal section of the arc-shaped plate. The horizontal section of the inverted L-shaped seat is equipped with a clamping locking element that cooperates with the support plate to position and clamp the upper side of the arc-shaped plate.

[0016] Mounting brackets are fixedly installed on both sides of the horizontal section of the inverted L-shaped base. The mounting brackets are slidably connected to the base. The mounting brackets are inverted L-shaped. Positioning clamps are installed on the vertical section of the mounting brackets. The positioning clamps cooperate with the horizontal section of the T-shaped frame to position the arc-shaped sides of the arc plate and clamp the lower side of the arc plate.

[0017] In one possible implementation, the clamping member includes a receiving groove opened in the horizontal section of the inverted L-shaped seat, a cylinder is fixedly installed in the receiving groove, a connecting plate is fixedly installed at the telescopic end of the cylinder, and a fixed pressure plate is welded to the bottom of the connecting plate along its length direction. The fixed pressure plate cooperates with the support plate to position and clamp the upper side of the arc plate.

[0018] In one possible implementation, the positioning clamp includes symmetrically arranged telescopic rods mounted vertically on the mounting frame. The telescopic ends of the two telescopic rods are jointly fixedly mounted with side pressure plates. A hydraulic cylinder is installed between the side pressure plates and the mounting frame. Positioning pressure plates that cooperate with the T-shaped frame are installed on the opposite surfaces of the two side pressure plates. A supplementary guide plate is fixedly mounted on the fixed pressure plate near the side pressure plates. The supplementary guide plate is slidably connected to the positioning pressure plates to further guide the movement of the positioning pressure plates.

[0019] In one possible implementation, the corrective locking assembly includes a fixed frame fixedly mounted at the bottom of a T-shaped frame, a sliding pressure bar mounted at the lower end of the fixed frame, a plurality of evenly arranged return springs I mounted between the fixed frame and the pressure bar, a plurality of abutment blocks mounted on the fixed frame to press against the pressure bar, a plurality of receiving grooves opened on both sides of the pressure bar along its width direction, a positioning clamp plate slidably connected in the receiving groove, a return spring II mounted between the positioning clamp plate and the receiving groove, and inclined plates corresponding to the positioning clamp plates one by one mounted on the side wall of the fixed frame.

[0020] After the pressure bar contacts the top of the stiffener plate, the fixing frame and the inclined plate continue to move down and compress the return spring. The inclined plate pushes the positioning clamp, and the positioning clamps on both sides perform secondary correction and positioning of the stiffener plate until the positioning clamps on both sides clamp the stiffener plate. At the same time, the abutment blocks press the pressure bar against the stiffener plate.

[0021] In one possible implementation, the positioning clamp is Z-shaped, the corner of the positioning clamp outside the receiving groove is arc-shaped, and evenly arranged balls are installed at the arc-shaped corner.

[0022] In one possible implementation, the welding mechanism includes an electric slider installed in an L-shaped guide groove, a welding machine mounted on the electric slider, a support leg on the welding machine, and ball bearings mounted at the bottom of the support leg. When the T-shaped frame moves down to press the stiffener against the fan-shaped plate, the ball bearings at the bottom of the support leg contact the top of the fan-shaped plate.

[0023] The above-mentioned one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects: 1. The present invention achieves the initial positioning of the stiffener angle through the angle correction mechanism, and the secondary correction is achieved with the correction and locking component, so as to ensure that the stiffener and the fan-shaped plate have the same angle on both sides. After splicing, the overall stiffener is evenly distributed, and the force is balanced during the explosion impact, thereby improving the impact resistance of the explosion-proof door.

[0024] 2. The correction and locking assembly designed in this invention can not only adjust the placement position of the stiffener plate, but also vertically press the stiffener plate onto the fan-shaped plate, and fix the arc-shaped plate with positioning clamps on both sides to prevent the weld shrinkage from pulling the stiffener plate to tilt or bend, ensuring that the angle between the stiffener plate and the panel is stable at 90 degrees, thereby improving the stability of the frame structure.

[0025] 3. The angle correction mechanism, locking and pressing mechanism, and welding mechanism designed in this invention work together to achieve an integrated design for positioning, correction, clamping, pressing, and welding of fan-shaped plates, stiffeners, and arc-shaped plates. The T-shaped frame has the functions of load bearing, clamping, and track, and the L-shaped guide groove provides rigid guidance for the welding mechanism. The welding torch moves automatically along the groove, and completes radial and circumferential weld welding in one pass. The weld penetration is uniform and the forming is stable, which further improves the stability of the welding. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 This is a first cross-sectional three-dimensional structural schematic diagram of the present invention.

[0029] Figure 3 This is a cross-sectional view of the correction and locking component of the present invention.

[0030] Figure 4 This is a second cross-sectional perspective view of the three-dimensional structure of the present invention.

[0031] Figure 5 This is the present invention. Figure 4A magnified view of section A in the image.

[0032] Figure 6 This is a third cross-sectional perspective view of the three-dimensional structure of the present invention.

[0033] Figure 7 This is the present invention. Figure 6 A magnified view of section B in the image.

[0034] Figure 8 This is a schematic diagram of the structure of the clamping locking component of the present invention.

[0035] Reference numerals: 1. Sector-shaped plate; 2. Rib plate; 3. Arc-shaped plate; 4. Base; 40. Frustum; 41. Sector-shaped platform; 5. Guide locking assembly; 50. Guide roller; 51. Storage groove; 52. Rotating shaft; 53. Pushing column; 6. Angle correction mechanism; 60. Mounting groove; 61. Rotating shaft; 62. Connecting plate; 63. Positioning abutment plate; 7. Locking and pressing mechanism; 71. T-shaped frame; 72. Correction and locking assembly; 720. Fixing frame; 721. Abutment block 722. Positioning clamp; 723. Inclined plate; 724. Pressure bar; 73. Positioning clamping assembly; 730. Rib; 731. Inverted L-shaped seat; 732. Support plate; 733. Mounting bracket; 750. Telescopic rod; 751. Side pressure plate; 752. Positioning pressure plate; 753. Supplementary guide plate; 74. L-shaped guide groove; 760. Connecting plate; 761. Fixed pressure plate; 8. Welding mechanism; 80. Electric slider; 81. Support leg; 82. Welding machine. Detailed Implementation

[0036] 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.

[0037] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] See Figure 1 An explosion-proof door structure assembly and welding equipment is provided. The explosion-proof door structure includes a fan-shaped plate 1, a stiffening plate 2 and an arc plate 3. The welding equipment includes a base 4, a guide locking component 5, an angle correction mechanism 6 and a locking and pressing mechanism 7.

[0039] See Figure 1The base 4 is composed of a frustum 40 and a sector 41. The top of the frustum 40 is higher than the top of the sector 41. Multiple friction-reducing rollers are installed on the top of the sector 41 to reduce friction during the movement of the sector plate 1. The locking and pressing mechanism 7 and the guide locking assembly 5 are installed on the base 4. The guide locking assembly 5 is used to guide the placement position of the sector plate 1 and lock its position. The angle correction mechanism 6 is installed on the frustum 40 and is used to initially correct the included angle between the positioning rib 2 and the two sides of the sector plate 1.

[0040] See Figure 1 The locking and pressing mechanism 7 includes a T-shaped frame 71 and a lifting drive source mounted on the base 4. The horizontal section of the T-shaped frame 71 is arc-shaped. The lifting drive source drives the T-shaped frame 71 to move up and down. A correction and locking component 72 is installed at the bottom of the vertical section of the T-shaped frame 71 for secondary correction of the stiffener 2 and pressing it against the fan-shaped plate 1. A positioning and clamping component 73 is provided at the end of the horizontal section of the T-shaped frame 71. The positioning and clamping component 73 cooperates with the horizontal section of the T-shaped frame 71 to position and clamp the arc-shaped plate 3 and press the arc-shaped plate 3 against the fan-shaped plate 1.

[0041] See Figure 1 and Figure 2 The vertical section of the T-shaped frame 71 is provided with L-shaped guide grooves 74 on both sides. A welding mechanism 8 is installed on the L-shaped guide grooves 74. The welding mechanism 8 is used to weld the weld between the fan-shaped plate 1, the stiffening plate 2 and the arc plate 3.

[0042] During assembly, the sector plate 1 is placed on the sector platform 41, with one end of the small arc surface of the sector plate 1 facing the truncated cone 40. The sector plate 1 is then moved, and the guide locking assembly 5 guides and positions it until it is pressed against the side wall of the truncated cone 40. The guide locking assembly 5 then locks the position of the sector plate 1, ensuring precise positioning and providing a foundation for the subsequent precise assembly of the stiffener 2 and the arc plate 3. Next, the stiffener 2 is placed in the middle of the upper surface of the sector plate 1, and the angle correction mechanism 6 performs initial correction and positioning of the stiffener 2. Finally, the positioning clamping assembly 73 supports the arc plate 3. The T-shaped frame 71 supports, positions, and presses the arc-shaped plate 3 against the top of the fan-shaped plate 1. During the downward movement of the T-shaped frame 71, the straightening and locking component 72 performs secondary straightening and pressing of the stiffening plate 2, so that the stiffening plate 2 maintains the same angle with both sides of the fan-shaped plate 1 under double straightening and positioning. This ensures that the stiffening plates 2 on the vertical shaft explosion-proof door after subsequent prefabricated structural module splicing and welding are evenly distributed, improving the overall impact resistance of the explosion-proof door. At the same time, the straightening and locking component 72 also presses the stiffening plate 2 vertically against the fan-shaped plate 1 to prevent the weld shrinkage during welding from pulling the stiffening plate 2 to tilt, causing the included angle between the stiffening plate 2 and the fan-shaped plate 1 to deviate from 90 degrees, which would affect the overall stress stability of the explosion-proof door.

[0043] During welding, the welding mechanism 8 moves along the L-shaped guide groove 74, first spot welding the weld between the fan-shaped plate 1, the stiffening plate 2 and the arc plate 3, and then completing continuous welding through the welding mechanism 8 or other conventional welding equipment. The L-shaped guide groove 74 guides the welding mechanism 8, effectively ensuring consistent penetration depth, good weld formation, and improved joint strength. It avoids the problem of uneven welding caused by the welder's constantly changing posture and inconsistent electrode speed and angle during manual welding, which leads to uneven melting on one side and misalignment of the plate edges.

[0044] See Figure 1 and Figure 2 The guide locking assembly 5 includes a locking member and two sets of guide members arranged in a V-shape. Each set of guide members consists of multiple guide rollers 50 evenly arranged radially along the fan-shaped platform 41. The guide rollers 50 are rotatably connected to the fan-shaped platform 41 through bearings, and the axis of the guide rollers 50 is perpendicular to the fan-shaped platform 41. The locking member is installed on the fan-shaped platform 41 and is used to press the fan-shaped plate 1 against the side wall of the truncated cone 40 and lock the fan-shaped plate 1.

[0045] See Figure 1 and Figure 6 The locking component includes a storage slot 51 on the fan-shaped platform 41, a rotating shaft 52 rotatably connected in the storage slot 51, and push posts 53 evenly arranged along its axial direction installed on the side wall of the rotating shaft 52. The push posts 53 are used to push the fan-shaped plate 1 against the side wall of the truncated cone 40. The multiple push posts 53 are arranged in an arc shape on the side wall of the rotating shaft 52. When the rotating shaft 52 rotates, the multiple push posts 53 all abut against and press against the arc-shaped side wall of the fan-shaped plate 1.

[0046] During the process of pushing the sector plate 1 towards the truncated cone 40, two sets of guide rollers 50 arranged in a V-shape guide the movement of the sector plate 1 to ensure the accurate placement of the sector plate 1. After the sector plate 1 is pressed against the side wall of the truncated cone 40, the rotating shaft 52 is driven to rotate manually or by an electric motor (not shown in the figure). The rotating shaft 52 drives the push column 53 to rotate until the push column 53 is pressed against the arc-shaped end face of the sector plate 1 away from the truncated cone 40, preventing the sector plate 1 from moving during the welding process.

[0047] See Figure 1 and Figure 2 The angle correction mechanism 6 includes a mounting groove 60 located on the top of the fan-shaped platform 41 and opened on the side wall of the frustum 40. Two rotating shafts 61 are rotatably connected in the mounting groove 60. The two rotating shafts 61 are symmetrically arranged along the axis of the frustum 40. A connecting plate 62 is fixedly sleeved on the rotating shaft 61. A positioning plate 63 is fixedly installed on the side wall of the connecting plate 62. A rotation drive source is provided on the frustum 40 to drive the two rotating shafts 61 to rotate in opposite directions. The stiffener 2 maintains the same angle with the two sides of the fan-shaped plate 1 under the cooperation of the two positioning plates 63.

[0048] It should be noted that the rotary drive source consists of a gear fixedly mounted on the rotating shaft 61 and a motor connected to one of the rotating shafts 61. The two gears mesh and drive each other. The motor is mounted on the frustum 40. All of the above are existing conventional drive mechanisms, which are not shown in the figure.

[0049] After the stiffening plate 2 is placed on the sector plate 1, the rotating shaft 61 connected to its output end is driven by the motor to rotate. The two rotating shafts 61 rotate in opposite directions under the meshing transmission of two gears. The rotating shafts 61 drive the connecting plate 62 and the positioning plate 63 to rotate. The two positioning plates 63 move towards the stiffening plate 2 synchronously and clamp and position the stiffening plate 2, realizing the initial accurate correction of the angle of the stiffening plate 2. During the welding operation, the positioning plate 63 is separated from the stiffening plate 2 to avoid interference with the welding operation.

[0050] See Figure 1 , Figure 4 , Figure 5 and Figure 6 The positioning and clamping assembly 73 includes a bracket installed on the top of the horizontal section of the T-shaped frame 71 via multiple ribs 730. The bracket consists of an inverted L-shaped seat 731 and a support plate 732 installed on the bottom of its vertical section. The bracket is fixedly connected to the T-shaped frame 71 via multiple ribs. The vertical cross-section of the arc plate 3 is inverted L-shaped. The support plate 732 is used to support the horizontal section of the arc plate 3. The horizontal section of the inverted L-shaped seat 731 is equipped with a clamping locking member that cooperates with the support plate 732 to position and clamp the upper side of the arc plate 3.

[0051] See Figure 1 , Figure 4 , Figure 5 and Figure 6 The horizontal section of the inverted L-shaped base 731 is fixedly equipped with mounting brackets 733 on both sides. The mounting brackets 733 are slidably connected to the base 4. The mounting brackets 733 are inverted L-shaped. The vertical section of the mounting brackets 733 is equipped with positioning clamps. The positioning clamps cooperate with the horizontal section of the T-shaped frame 71 to position the arc-shaped sides of the arc plate 3 and clamp the lower side of the arc plate 3.

[0052] In the initial state, the distance between the bracket and the sector plate 1 is greater than the height of the arc plate 3, which facilitates the placement of the arc plate 3. During placement, the horizontal section of the upper side of the arc plate 3 is inserted between the horizontal section of the bracket 732 and the inverted L-shaped seat 731, and the horizontal section of the bracket 732 and the inverted L-shaped seat 731 supports the arc plate 3. Then, the lifting drive source drives the mounting frame 733 and the arc plate 3 to move downward. When the arc plate 3 contacts the sector plate 1, the positioning clamp and the locking component are activated simultaneously. The locking component cooperates with the bracket 732 to position and clamp the upper side of the arc plate 3. The positioning clamp cooperates with the horizontal section of the T-shaped frame 71 to position the arc sides of the arc plate 3 and clamp the lower side of the arc plate 3, accurately positioning the arc plate 3. Then, the T-shaped frame 71 and the positioning clamp assembly 73 continue to move downward, so that the arc plate 3 and the sector plate 1 are pressed together, improving the assembly accuracy and welding stability of the arc plate 3.

[0053] See Figure 1 , Figure 4 , Figure 5 and Figure 8 The clamping component includes a receiving groove opened in the horizontal section of the inverted L-shaped seat 731. A cylinder is fixedly installed in the receiving groove. A connecting plate 760 is fixedly installed at the telescopic end of the cylinder. A fixed pressure plate 761 is welded to the bottom of the connecting plate 760 and is evenly arranged along its length direction. The fixed pressure plate 761 cooperates with the support plate 732 to position and clamp the upper side of the arc plate 3.

[0054] See Figure 1 , Figure 4 , Figure 5 and Figure 7 The positioning clamp includes symmetrically arranged telescopic rods 750 mounted vertically on the mounting frame 733. The telescopic ends of the two telescopic rods 750 are fixedly mounted with side pressure plates 751. A hydraulic cylinder is installed between the side pressure plates 751 and the mounting frame 733. Positioning pressure plates 752 that cooperate with T-shaped frames 71 are installed on the opposite surfaces of the two side pressure plates 751. A supplementary guide plate 753 is fixedly mounted on the fixed pressure plate 761 near the side pressure plate 751. The supplementary guide plate 753 is slidably connected to the positioning pressure plate 752 to further guide the movement of the positioning pressure plate 752.

[0055] The hydraulic cylinder and the first air cylinder are activated. The first air cylinder drives the fixed pressure plate 761 to move towards the arc plate 3 through the connecting plate 760 to clamp the arc plate 3. The hydraulic cylinder drives the side pressure plate 751 to move towards the arc plate 3. The two side pressure plates 751 center and position the arc ends of the arc plate 3. At the same time, the fixed pressure plate 761 and the support plate 732 cooperate to clamp and fix the upper side of the arc plate 3. The positioning pressure plate 752 and the horizontal section of the T-shaped frame 71 cooperate to clamp the lower side of the arc plate 3 to ensure the stability of the arc plate 3 during welding.

[0056] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The correction and locking assembly 72 includes a fixed frame 720 fixedly installed at the bottom of a T-shaped frame 71. A sliding pressing strip 724 is installed at the lower end of the fixed frame 720. A plurality of evenly arranged return springs are installed between the fixed frame 720 and the pressing strip 724. A plurality of pressing blocks 721 are installed on the fixed frame 720 to press against the pressing strip 724. A plurality of receiving grooves are opened on both sides of the pressing strip 724 along its width direction. A positioning clamp 722 is slidably connected in the receiving groove. A return spring is installed between the positioning clamp 722 and the receiving groove. An inclined plate 723 corresponding to the positioning clamp 722 is installed on the side wall of the fixed frame 720.

[0057] See Figure 3 The positioning clamp 722 is Z-shaped, and the corner of the positioning clamp 722 outside the receiving groove is arc-shaped, and evenly arranged balls are installed at the arc-shaped corner.

[0058] The lifting drive source drives the T-shaped frame 71 and the pressure bar 724 to move downward. After the pressure bar 724 contacts the top of the stiffener 2, the fixing frame 720 and the inclined plate 723 continue to move downward and compress the return spring 1. The inclined plate 723 contacts the ball bearing on the arc corner of the positioning clamp 722 and pushes the positioning clamp 722 towards the stiffener 2 until the positioning clamps 722 on both sides clamp the stiffener 2, thereby realizing the secondary correction and positioning of the stiffener 2. At the same time, the abutment block 721 presses the pressure bar 724 against the stiffener 2 to ensure that the stiffener 2 is perpendicular to the fan-shaped plate 1 and to suppress welding deformation.

[0059] It should be noted that the lifting drive source adopts an existing conventional lifting mechanism, such as opening a rectangular slot on the fan-shaped platform 41, installing cylinder two in the rectangular slot, installing a lifting frame at the telescopic end of cylinder two, and connecting the lifting frame to the T-shaped frame 71 and two mounting brackets 733 to drive the locking and pressing mechanism 7 to lift. The specific connection is not shown in the figure.

[0060] See Figure 1 and Figure 5 The welding mechanism 8 includes an electric slider 80 installed in an L-shaped guide groove 74. A welding machine 82 is mounted on the electric slider 80. The welding machine 82 is provided with a support leg 81. A ball bearing is installed at the bottom of the support leg 81. When the T-shaped frame 71 moves down and presses the stiffener 2 against the fan-shaped plate 1, the ball bearing at the bottom of the support leg 81 contacts the top of the fan-shaped plate 1. Then, when the electric slider 80 drives the welding machine 82 to move, the support leg 81 simultaneously supports the welding machine 82, thereby improving the stability of the movement of the welding machine 82 and ensuring the welding quality.

[0061] It should be noted that the welding machine 82 uses CO2 gas shielded welding equipment. CO2 gas shielded welding equipment uses non-contact arc welding of welding wire, which can complete spot welding and continuous welding operations, with good welding stability and small deformation.

[0062] See Figures 1 to 8 Working principle: During assembly, the sector plate 1 is placed on the sector platform 41 with its small arc surface facing the truncated cone 40. The sector plate 1 is pushed and guided and locked by the guide locking component 5. The stiffener 2 is placed in the middle of the sector plate 1 and the angle correction mechanism 6 completes the initial correction of the angle of the stiffener 2. The arc plate 3 is placed on the positioning clamping component 73 and clamped and positioned by the positioning clamping component 73 and pressed tightly against the sector plate 1. The T-shaped frame 71 moves down and the correction locking component 72 performs a second correction on the stiffener 2 and presses it to fix it, so as to achieve precise assembly of the sector plate 1, stiffener 2 and arc plate 3.

[0063] During welding, the welding mechanism 8 moves along the L-shaped guide groove 74 to complete spot welding positioning and continuous welding in sequence, ensuring uniform weld formation and stable quality, and improving the processing accuracy and structural strength of the explosion-proof door prefabricated module.

[0064] It is important to note that while large vertical shaft explosion-proof door prefabricated modules can still be welded using a combination of manual labor and measuring instruments, the problem of insufficient rib plate positioning accuracy remains unavoidable. Manual adjustment of the rib plate position makes it difficult to maintain consistent angles; differences in experience among operators and even errors by the same operator can cause angle variations within the same batch of products. Insufficient clamping during spot welding of the rib plate 2 can cause slight displacement due to welding heat input, altering the initial positioning angle. The tensile force generated by weld cooling and contraction further exacerbates the tilting of the rib plate 2, ultimately leading to a decrease in the overall stability and impact resistance of the assembled prefabricated modules. This invention, however, enables automated positioning, correction, clamping, and welding of the vertical shaft explosion-proof door fan-shaped prefabricated modules. The angle correction mechanism 6 achieves initial positioning of the rib plate 2's included angle, and the correction and locking component 72 performs secondary correction, ensuring that the included angles of the rib plate 2 and the fan-shaped plate 1 are consistent. This results in a radially uniform distribution of the rib plates throughout the explosion-proof door, ensuring balanced force distribution during an explosion and significantly improving impact resistance. The rigid clamping and multi-directional holding of the stiffening plates and arc-shaped plates effectively suppress welding deformation, ensuring that the stiffening plates and the panels remain perpendicular, thus improving the stability and reliability of the frame structure. Therefore, although this solution adds mechanical structures such as the guide locking component 5, angle correction mechanism 6, locking and pressing mechanism 7, and welding mechanism 8 compared to the existing manual assembly and welding, these are all conventional and ordinary mechanical structural components. There are no high-cost precision parts. Only a one-time investment is required for long-term use, meeting the mass production, standardization, and high-precision production needs of standard model vertical shaft explosion-proof door prefabricated components for coal mines / metal mines (e.g., annual production capacity ≥ 50 units). It is suitable for the coal mine safety equipment manufacturing industry and has good industrial applicability in this industry. Therefore, the cost of adding the above structures is low. Compared with the economic benefits brought by mass production, standardization, and high-precision production, the cost of adding the above structures is negligible. In summary, the above technical solution of this invention is a specific invention based entirely on the above-mentioned existing technology and to solve the technical problems.

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An assembly and welding equipment for an explosion-proof door structure, the explosion-proof door structure comprising a fan-shaped plate, stiffening plates, and an arc-shaped plate, characterized in that, Welding equipment includes: The base consists of a frustum and a sector. A guide locking assembly, located on the base, is used to guide and lock the placement position of the sector plate. An angle correction mechanism, located on a circular platform, is used for the initial correction of the included angle between the positioning rib and the two sides of the sector plate. The locking and pressing mechanism is located on the base and includes a T-shaped frame and a lifting drive source located on the base. The horizontal section of the T-shaped frame is arc-shaped. The lifting drive source drives the T-shaped frame to move up and down. The bottom of the vertical section of the T-shaped frame is provided with a correction and locking component for secondary correction of the stiffener and pressing it against the fan-shaped plate. The end of the horizontal section of the T-shaped frame is provided with a positioning and clamping component. The positioning and clamping component cooperates with the horizontal section of the T-shaped frame to position and clamp the arc-shaped plate and press the arc-shaped plate against the fan-shaped plate. The vertical section of the T-shaped frame is provided with L-shaped guide grooves on both sides. The L-shaped guide grooves are equipped with welding mechanisms, which are used to weld the welds between the fan-shaped plate, the stiffening plate and the arc plate. The angle correction mechanism, locking and pressing mechanism and welding mechanism work together to integrate the positioning, correction, clamping, pressing and welding of the fan-shaped plate, stiffener plate and arc plate, and perform double positioning assembly of the included angle between the stiffener plate and the two sides of the fan-shaped plate.

2. The explosion-proof door structure assembly and welding equipment according to claim 1, characterized in that: The guide locking assembly includes a locking component and two sets of guide components arranged in a V-shape. Each set of guide components consists of multiple guide rollers evenly arranged radially along the fan-shaped platform. The guide rollers are rotatably connected to the fan-shaped platform, and the axis of the guide rollers is perpendicular to the fan-shaped platform. The locking component is used to press the fan-shaped plate against the side wall of the truncated cone and lock the fan-shaped plate.

3. The explosion-proof door structure assembly and welding equipment according to claim 1, characterized in that: The angle correction mechanism includes a mounting groove on the side wall of the frustum located at the top of the sector. Two rotating shafts are rotatably connected in the mounting groove. The two rotating shafts are symmetrically arranged along the axis of the frustum. A connecting plate is fixedly sleeved on the rotating shaft. A positioning plate is installed on the side wall of the connecting plate. A rotation drive source is provided on the frustum to drive the two rotating shafts to rotate in opposite directions. The rib plate maintains the same angle with the two sides of the sector plate under the cooperation of the two positioning plates.

4. The explosion-proof door structure assembly and welding equipment according to claim 1, characterized in that: The corrective locking assembly includes a fixed frame installed at the bottom of the T-shaped frame, a sliding pressure bar installed at the lower end of the fixed frame, a plurality of evenly arranged return springs I installed between the fixed frame and the pressure bar, a plurality of abutment blocks installed on the fixed frame to press against the pressure bar, a plurality of receiving grooves opened on both sides of the pressure bar along its width direction, a positioning clamp plate slidably connected in the receiving groove, a return spring II installed between the positioning clamp plate and the receiving groove, and inclined plates corresponding to the positioning clamp plate I installed on the side wall of the fixed frame; After the pressure bar contacts the top of the stiffener plate, the fixing frame and the inclined plate continue to move down and compress the return spring. The inclined plate pushes the positioning clamp, and the positioning clamps on both sides perform secondary correction and positioning of the stiffener plate until the positioning clamps on both sides clamp the stiffener plate. At the same time, the abutment blocks press the pressure bar against the stiffener plate.

5. The explosion-proof door structure assembly and welding equipment according to claim 1, characterized in that: The positioning and clamping assembly includes a bracket mounted on the top of the horizontal section of the T-shaped frame via multiple ribs. The bracket consists of an inverted L-shaped seat and a support plate mounted on the bottom of its vertical section. The bracket is connected to the T-shaped frame via multiple ribs. The vertical section of the arc-shaped plate is inverted L-shaped. The support plate is used to support the horizontal section of the arc-shaped plate. The horizontal section of the inverted L-shaped seat is equipped with a clamping locking element that cooperates with the support plate to position and clamp the upper side of the arc-shaped plate. Mounting brackets are installed on both sides of the horizontal section of the inverted L-shaped base. The mounting brackets are slidably connected to the base. The mounting brackets are inverted L-shaped. Positioning clamps are installed on the vertical section of the mounting brackets. The positioning clamps cooperate with the horizontal section of the T-shaped frame to position the two sides of the arc-shaped plate and clamp the lower side of the arc-shaped plate.

6. The explosion-proof door structure assembly and welding equipment according to claim 2, characterized in that: The locking component includes a storage slot on the fan-shaped platform, a rotating shaft rotatably connected inside the storage slot, and push posts evenly arranged along its axial direction installed on the side wall of the rotating shaft. The push posts are used to push the fan-shaped plate against the side wall of the frustum.

7. The explosion-proof door structure assembly and welding equipment according to claim 5, characterized in that: The positioning clamping device includes telescopic rods symmetrically arranged vertically on the vertical section of the mounting frame. The telescopic ends of the two telescopic rods are jointly equipped with side pressure plates. A hydraulic cylinder is installed between the side pressure plates and the mounting frame. Positioning pressure plates that cooperate with the T-shaped frame are installed on the opposite surfaces of the two side pressure plates.

8. The explosion-proof door structure assembly and welding equipment according to claim 5, characterized in that: The clamping component includes a receiving groove opened in the horizontal section of the inverted L-shaped seat, a cylinder is installed in the receiving groove, a connecting plate is installed at the telescopic end of the cylinder, and a fixed pressure plate is installed at the bottom of the connecting plate along its length direction. The fixed pressure plate cooperates with the support plate to position and clamp the upper side of the arc plate.

9. The explosion-proof door structure assembly and welding equipment according to claim 7, characterized in that: The welding mechanism includes an electric slider installed in an L-shaped guide groove, a welding machine mounted on the electric slider, a support leg on the welding machine, and ball bearings mounted at the bottom of the support leg.

10. The explosion-proof door structure assembly and welding equipment according to claim 4, characterized in that: The positioning clamp is Z-shaped, and the corner of the positioning clamp outside the receiving groove is arc-shaped, with evenly arranged ball bearings installed at the arc-shaped corner.

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