Mining machinery welding system

Abstract

The invention relates to the field of welding equipment, in particular to a mining machinery welding system which comprises a welding chamber, and welding equipment is arranged in the welding chamber. A material changing opening is formed in one side wall of the welding chamber, a conversion device is arranged in the material changing opening, and welding workbenches are arranged at the front end and the rear end of the conversion device correspondingly. The door-shaped frame is arranged above the replacement material opening, a multi-degree-of-freedom moving device is arranged on the door-shaped frame, and a welding seam detection assembly is arranged on a moving part of the multi-degree-of-freedom moving device. The two welding workbenches can be switched through the switching device, the welding workbench located outside the welding chamber is used for feeding, discharging and weld joint detection, and the welding workbench located inside the welding chamber is used for welding. The welding process is carried out in the welding chamber, and the area, except the conversion device, of the material changing opening is shielded through the shielding plate, so that smoke is prevented from dispersing outwards in the welding process; and meanwhile, the whole welding process is carried out in the welding chamber, and the welding chamber can play a role in dust prevention and protection in the welding process.

Description

Technical Field

[0001] This invention relates to the field of welding equipment, and more particularly to a welding system for mining machinery. Background Technology

[0002] In the mining industry, the quality and reliability of mining machinery are paramount, and welding, as a key process in the manufacturing of mining machinery, directly affects the overall performance and service life of the equipment. Currently, the equipment systems used for welding mining machinery are directly located in the workshop, making it impossible to avoid the influence of external dust during the welding process. In addition, the welded mechanical parts need to be transferred to other areas of the workshop for weld inspection, resulting in a lack of seamless connection in the entire welding production process. Summary of the Invention

[0003] Based on the above problems, the purpose of this invention is to provide a welding system for mining machinery. The invention adopts the following technical solution:

[0004] This invention provides a welding system for mining machinery, comprising:

[0005] The welding chamber is connected to the flue gas purification equipment via a pipe. Welding equipment is installed in the welding chamber. A material exchange port is provided on one side wall of the welding chamber. A conversion device is provided in the material exchange port. The left and right ends of the conversion device are rotatably connected to the conversion bracket. Welding workbenches are provided at the front and rear ends of the conversion device. The welding workbenches are rotatably connected to the conversion device. Baffles are provided on the upper and lower sides of the conversion device.

[0006] A portal frame is provided above the material changing port. A multi-degree-of-freedom moving device is provided on the portal frame, and a weld detection component is provided on the moving part of the multi-degree-of-freedom moving device.

[0007] Preferably, the welding equipment includes a welding moving table and a first robotic arm; a welding torch is provided on the arm of the first robotic arm;

[0008] The welding mobile table includes a base, the base is provided with a mobile welding slide rail, the mobile welding slide rail is provided with a welding mobile slide block, the welding mobile slide block is provided with a first turntable, the first robotic arm is provided on the first turntable, and the welding mobile slide block is driven by a welding mobile drive device.

[0009] Preferably, the welding moving drive device includes a first rack and a first drive motor. The first rack is fixed on the foundation, the first drive motor is mounted on the welding moving slide, and a first drive gear is mounted on the power shaft of the first drive motor. The first drive gear meshes with the first rack.

[0010] Preferably, the conversion device includes a central crossbeam arranged in a left-right direction. Support arms are provided at both ends of the central crossbeam and arranged perpendicularly thereto. The central crossbeam and the support arms at both ends are arranged in an I-shape. A conversion shaft is provided on the support arm. The conversion shaft is rotatably connected to the conversion bracket. A conversion drive component for driving the conversion shaft to rotate is provided on one of the conversion brackets.

[0011] Preferably, the welding workbench includes a support frame arranged in a left-right direction, and a support shaft is provided at both ends of the support frame. The support shaft is rotatably connected to the support arm, and a welding rotary drive component for driving the support shaft to rotate is provided in one of the support arms.

[0012] Preferably, the multi-degree-of-freedom moving device includes a detection moving stage and a second robotic arm. The detection moving stage is connected to the gantry frame, and the arm of the second robotic arm is equipped with a weld detection component.

[0013] Preferably, the detection moving stage includes a horizontal slide rail, which is fixed on the gantry frame. A transverse sliding seat is connected to the horizontal slide rail, and a vertical slide rail is provided on the transverse sliding seat. A lifting seat is connected to the vertical slide rail, and a second turntable is provided on the lifting seat. The second robotic arm is mounted on the second turntable.

[0014] Preferably, a second drive motor is mounted on the transverse sliding seat, a second drive gear is mounted on the power shaft of the second drive motor, the second drive gear meshes with a second rack, and the second rack is horizontally arranged on the portal frame;

[0015] A third drive motor is mounted on the transverse support, and a drive screw is connected to the power shaft of the third drive motor. The drive screw is threadedly connected to the lifting support.

[0016] Preferably, the weld inspection assembly includes an industrial camera and an ultrasonic probe; the industrial camera captures and identifies the appearance of the weld, and the ultrasonic probe probes the interior of the weld.

[0017] Preferably, the shielding plate is a transparent plate; an inspection door is provided on one side of the welding chamber, a crane is provided in the front area corresponding to the material changing port, and a track-type moving trolley is provided below the crane.

[0018] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0019] This invention uses a track-mounted trolley to move the workpiece to be welded to the material changing port, then a crane hoists the workpiece onto the welding worktable and secures it with tooling fixtures. A conversion device rotates the welding worktable with the workpiece fixed inside the welding chamber. The welding worktable, relying on its own rotation and the multi-degree-of-freedom movement of the first robotic arm, completes the welding of the workpiece. During the welding process, the track-mounted trolley again moves the workpiece to the material changing port, where it is secured on another welding worktable located outside the welding chamber. After welding is completed on the workpiece on the welding worktable inside the welding chamber, the conversion device rotates the workpiece to be welded outside into the welding chamber. Once the welded workpiece has rotated to the outside of the welding chamber via the conversion device, the multi-degree-of-freedom moving device begins to move along the gantry frame. Simultaneously, the second robotic arm drives the weld seam detection component to perform weld seam detection on the welded workpiece. An industrial camera captures and identifies the weld seam appearance. The weld seam image generated by the industrial camera is transmitted to a processor, which cross-compares the weld seam image with various weld seam patterns pre-set in the image recognition module database. If a weld section is deemed problematic, an industrial camera photographs and stores the image. Operators can view this image on a monitor to determine if it's a normal weld. Simultaneously, an ultrasonic probe probes the interior of the weld and sends signals back to the main unit of the testing instrument for further confirmation of weld quality. Workpieces that pass inspection are then hoisted by an overhead crane onto a track-mounted mobile trolley. This motor-driven trolley transports the welded workpiece to the next process step.

[0020] In this invention, the conversion device can switch between two welding workbenches. The welding workbench located outside the welding chamber is used for loading, unloading, and weld inspection, while the welding workbench located inside the welding chamber is used for welding. The welding process takes place inside the welding chamber, and a baffle plate blocks the area outside the material exchange port (excluding the conversion device) to prevent fumes from escaping during welding. Furthermore, the entire welding process is carried out inside welding chamber 1, which provides dust protection and safety during the welding process. Attached Figure Description

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

[0022] Figure 1 This is a schematic diagram of the main structure of the mining machinery welding system in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the welding chamber structure in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the weld inspection component in an embodiment of the present invention;

[0025] Figure 4This is a schematic diagram of the structural components of the welding equipment in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the conversion device and welding workbench in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the arrangement of the overhead crane and the gantry frame in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the multi-degree-of-freedom mobile device in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached drawings: 1. Welding chamber; 2. Fume purification equipment; 3. Welding equipment; 301. Welding moving table; 301-1. Foundation; 301-2. Moving welding slide rail; 301-3. Welding moving slide block; 301-4. First turntable; 301-5. First rack; 301-6. First drive motor; 302. First robotic arm; 303. Welding torch; 4. Material changing port; 5. Conversion device; 501. Middle crossbeam; 502. Support arm; 503. Conversion shaft; 504. Conversion drive component; 6. Conversion bracket; 7. Welding workbench; 701. Support frame; 702. Support shaft; 703. Welding rotary drive. 8. Moving parts; 9. Baffle plate; 10. Gantry frame; 11. Multi-degree-of-freedom moving device; 1001. Inspection moving stage; 1001-1. Horizontal slide rail; 1001-2. Horizontal sliding seat; 1001-3. Vertical slide rail; 1001-4. Lifting seat; 1001-5. Second drive motor; 1001-6. Second rack; 1001-7. Third drive motor; 1001-8. Drive screw; 1001-9. Second turntable; 1002. Second robotic arm; 11. Weld seam inspection assembly; 1101. Industrial camera; 1102. Ultrasonic probe; 12. Inspection door; 13. Overhead crane; 14. Track-type moving trolley. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] like Figures 1 to 3 As shown in the figure, this embodiment discloses a welding system for mining machinery, including a welding chamber 1 and a gantry frame 9. The welding chamber 1 can be constructed from prefabricated panels and mainly serves to prevent dust and provide protection during the welding process. Welding equipment 3 is installed in the welding chamber 1. The welding equipment 3 is used to weld surface components of the mining machinery, such as plates. The welding chamber 1 is connected to a flue gas purification device 2 via a pipeline. The fumes generated during the welding process can be collected by the welding chamber 1 and then purified by the flue gas purification device 2 through the pipeline.

[0032] A material exchange port 4 is provided on one side wall of the welding chamber 1. A conversion device 5 is installed in the material exchange port 4. Both ends of the conversion device 5 are rotatably connected to a conversion bracket 6. Welding workbenches 7 are provided at both ends of the conversion device 5, and the welding workbenches 7 are rotatably connected to the conversion device 5. Baffle plates 8 are provided on both the upper and lower surfaces of the conversion device 5. The baffle plates 8 can block the area of ​​the material exchange port 4 except for the conversion device 5 to prevent the fumes from escaping during welding.

[0033] During operation, the conversion device 5 can switch between the two welding workbenches 7. The welding workbench 7 located outside the welding chamber 1 is used for loading, unloading and weld inspection, while the welding workbench 7 located inside the welding chamber 1 is used for welding.

[0034] The gantry frame 9 is positioned above the material exchange port 4. A multi-degree-of-freedom moving device 10 is mounted on the gantry frame 9, and a weld inspection assembly 11 is mounted on the moving part of the multi-degree-of-freedom moving device 10. The weld inspection assembly 11 can perform weld inspection on the welded workpiece.

[0035] In this embodiment, the weld inspection component 11 includes an industrial camera 1101 and an ultrasonic probe 1102. The industrial camera 1101 captures and identifies the appearance of the weld. The weld image generated by the industrial camera 1101 is transmitted to the processor, which cross-compares the weld image with various weld patterns pre-set in the image recognition module database. If a section of the weld is determined to be problematic, the industrial camera 1101 takes a picture of that section and stores it. The operator can view this picture on a monitor to determine if it is a normal weld. Simultaneously, the ultrasonic probe 1102 probes the interior of the weld and feeds the signal back to the main unit of the inspection instrument to further determine whether the weld is qualified.

[0036] like Figure 4 As shown, the welding equipment 3 includes a welding moving table 301 and a first robotic arm 302; a welding torch 303 is provided on the arm of the first robotic arm 302.

[0037] The welding mobile table 301 includes a base 301-1, which can be made of cement concrete. The base 301-1 is provided with two mobile welding slide rails 301-2 arranged side by side. A welding mobile slide block 301-3 is provided on the mobile welding slide rails 301-2. The welding mobile slide block 301-3 can slide along the mobile welding slide rails 301-2. A first turntable 301-4 is provided on the welding mobile slide block 301-3. The first turntable 301-4 is driven to rotate by a motor. The first robotic arm 302 is provided on the first turntable 301-4. The welding mobile slide block 301-3 is driven by a welding mobile drive device.

[0038] In this embodiment, the welding moving drive device includes a first rack 301-5 and a first drive motor 301-6. The first rack 301-5 is fixed on the base 301-1 and arranged side by side with the moving welding slide rail 301-2. The first drive motor 301-6 is mounted on the welding moving slide block 301-3. A first drive gear is mounted on the power shaft of the first drive motor 301-6 and meshes with the first rack 301-5.

[0039] like Figure 5 As shown, the conversion device 5 includes a central crossbeam 501 arranged in a left-right direction. Support arms 502, perpendicularly arranged to both ends of the central crossbeam 501, are fixed thereto. The central crossbeam 501 and the support arms 502 at both ends are arranged in an I-shape. A conversion shaft 503 is mounted on each support arm 502, and the conversion shaft 503 is rotatably connected to the conversion bracket 6. One of the conversion brackets 6 is equipped with a conversion drive component 504 that drives the conversion shaft 503 to rotate. The conversion drive component 504 is typically a worm gear reducer motor.

[0040] The welding workbench 7 includes a support frame 701 with multiple mounting holes for mounting welding fixtures. The support frame 701 is arranged in a left-right direction, and support shafts 702 are provided at both ends. The support shafts 702 are rotatably connected to support arms 502. One of the support arms 502 contains a welding rotary drive component 703 that drives the support shaft 702 to rotate. The welding rotary drive component 703 is typically a worm gear reducer motor.

[0041] like Figure 6 and 7 As shown, the multi-degree-of-freedom moving device 10 includes a detection moving stage 1001 and a second robotic arm 1002. The detection moving stage 1001 is connected to the gantry frame 9, and the second robotic arm 1002 is provided with a weld detection assembly 11 on its arm.

[0042] The detection moving stage 1001 includes two horizontal slide rails 1001-1, which are fixed on the gantry frame 9. A transverse sliding seat 1001-2 is connected to the horizontal slide rails 1001-1, and the transverse sliding seat 1001-2 moves laterally along the horizontal slide rails 1001-1. Two vertical slide rails 1001-3 are provided on the transverse sliding seat 1001-2, and a lifting seat 1001-4 is connected to the vertical slide rails 1001-3, which slide up and down along the vertical slide rails 1001-3. A second turntable 1001-9 is provided on the lifting seat 1001-4, which is driven to rotate by a motor. A second robotic arm 1002 is mounted on the second turntable 1001-9.

[0043] In this embodiment, a second drive motor 1001-5 is installed on the transverse sliding seat 1001-2, and a second drive gear is installed on the power shaft of the second drive motor 1001-5. The second drive gear meshes with a second rack 1001-6, and the second rack 1001-6 is horizontally arranged on the portal frame 9.

[0044] In addition, a third drive motor 1001-7 is installed on the transverse shift seat 1001-2. A drive screw 1001-8 is connected to the power shaft of the third drive motor 1001-7. The drive screw 1001-8 is arranged vertically and is rotatably connected to the transverse shift seat 1001-2 through a bearing seat. The drive screw 1001-8 is threadedly connected to the lifting seat 1001-4.

[0045] In this embodiment, the shielding plate 8 is a transparent plate, which facilitates observation of the welding process inside the welding chamber 1. In addition, an inspection door 12 is provided on one side of the welding chamber 1, through which operators can enter the welding chamber 1 to inspect and maintain the equipment.

[0046] In this embodiment, a crane 13 is provided in the front area corresponding to the material exchange port 4, and a track-type moving trolley 14 is provided below the crane 13.

[0047] The operation process of this invention is as follows:

[0048] The workpiece to be welded is moved to the material exchange port 4 by the track-type moving trolley 14, and then the workpiece is hoisted onto the welding worktable 7 by the overhead crane 13 and fixed by the tooling fixture. The conversion device 5 rotates the welding worktable 7 with the workpiece fixed into the welding chamber 1. The welding worktable 7 completes the welding of the workpiece by its own rotation and the multi-free movement of the first robotic arm 302.

[0049] During the welding process, the workpiece to be welded is moved to the loading and unloading port 4 again by the rail-mounted mobile trolley 14, and the workpiece is fixed on the welding table 7 located outside the welding chamber 1. After the workpiece on the welding table 7 inside the welding chamber 1 is welded, the workpiece to be welded outside is rotated into the welding chamber 1 through the conversion device 5.

[0050] When the welded workpiece rotates outside the welding chamber 1 through the conversion device 5, the multi-degree-of-freedom moving device 10 starts to move on the gantry 9. At the same time, the second robotic arm 1002 drives the weld detection component 11 to detect the weld of the welded workpiece. Among them, the industrial camera 1101 takes pictures and identifies the weld appearance. The weld image scanned and generated by the industrial camera 1101 is transmitted to the processor, and the processor cross-compares the weld image with various weld patterns preset in the image recognition module database. If it is determined that there is a problem with a certain weld, the industrial camera 1101 takes a picture of this weld for retention, and the operator can view this picture on the display to check whether it belongs to a normal weld. At the same time, the ultrasonic probe 1102 detects the inside of the weld and feeds back the signal to the main body of the detector to further determine whether the weld is qualified.

[0051] The qualified workpiece is lifted onto the rail-mounted mobile trolley 14 by the overhead crane 13. The rail-mounted mobile trolley 14 can be driven by a motor, and the rail-mounted mobile trolley 14 transports the welded workpiece to the next process.

[0052] In the present invention, the conversion device 5 can switch between the two welding tables 7. The welding table 7 located outside the welding chamber 1 is used for loading, unloading, and weld detection, and the welding table 7 located inside the welding chamber 1 is used for welding. The welding process is carried out inside the welding chamber 1, and the area except the conversion device 5 at the loading and unloading port 4 is blocked by the baffle 8 to prevent the fume from escaping during the welding process. At the same time, the entire welding process is carried out inside the welding chamber 1, and the welding chamber 1 can play a role in dust prevention and protection during the welding process.

[0053] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A mining machine welding system characterized by, The utility model relates to a welding device and a welding method thereof, and the welding device comprises: a welding chamber (1) connected with a flue gas purification device (2) through a pipeline, wherein a welding device (3) is arranged in the welding chamber (1); a material changing opening (4) is arranged on a side wall of the welding chamber (1), a conversion device (5) is arranged in the material changing opening (4), the left and right ends of the conversion device (5) are both rotationally connected to a conversion support (6), welding workbenches (7) are arranged at the front and back ends of the conversion device (5), the welding workbenches (7) are rotationally connected to the conversion device (5), and shielding plates (8) are arranged on the upper and lower surfaces of the conversion device (5); a door-shaped frame (9) is arranged above the material changing opening (4), and a multi-degree-of-freedom moving device (10) is arranged on the door-shaped frame (9); and a weld seam detection assembly (11) is arranged on the moving part of the multi-degree-of-freedom moving device (10).

2. The mining machinery welding system of claim 1, wherein: The welding device (3) comprises a welding moving table (301) and a first mechanical arm (302); a welding torch (303) is arranged on the arm of the first mechanical arm (302); the welding moving table (301) comprises a base (301-1) provided with a moving welding slide rail (301-2), a welding moving slide seat (301-3) is arranged on the moving welding slide rail (301-2), a first turntable (301-4) is arranged on the welding moving slide seat (301-3), the first mechanical arm (302) is arranged on the first turntable (301-4), and the welding moving slide seat (301-3) is driven by a welding moving driving device.

3. The mining machinery welding system of claim 2, characterized by: The welding moving driving device comprises a first rack (301-5) and a first driving motor (301-6); the first rack (301-5) is fixed on the base (301-1); the first driving motor (301-6) is mounted on the welding moving slide seat (301-3); a first driving gear is mounted on the power shaft of the first driving motor (301-6); and the first driving gear is engaged with the first rack (301-5).

4. The mining machinery welding system of claim 1, wherein: The conversion device (5) comprises a middle cross beam (501) arranged in the left-right direction, support arms (502) arranged perpendicularly to the middle cross beam (501) and arranged at the left and right ends of the middle cross beam (501), the middle cross beam (501) and the support arms (502) at the two ends are arranged in an I-shaped manner, a conversion shaft (503) is arranged on the support arm (502), the conversion shaft (503) is rotationally connected to the conversion support (6), and one of the conversion supports (6) is provided with a conversion driving member (504) for driving the conversion shaft (503) to rotate.

5. The mining machinery welding system of claim 4, wherein: The welding workbench (7) comprises a support frame (701) arranged along the left-right direction, both ends of the support frame (701) are provided with support shafts (702), the support shafts (702) are rotationally connected to the support arms (502), and one of the support arms (502) is provided with a welding rotation driving member (703) for driving the support shaft (702) to rotate.

6. The mining machinery welding system of claim 1, wherein: The multi-degree-of-freedom moving device (10) comprises a detection moving table (1001) and a second mechanical arm (1002), the detection moving table (1001) is connected to the door-shaped frame (9), and the second mechanical arm (1002) is provided with a weld joint detection assembly (11) on the arm.

7. The mining machinery welding system of claim 6, characterized by: The detection moving table (1001) comprises a horizontal sliding rail (1001-1) fixed to the door-shaped frame (9), a transverse moving seat (1001-2) connected to the horizontal sliding rail (1001-1), a vertical sliding rail (1001-3) provided on the transverse moving seat (1001-2), a lifting seat (1001-4) connected to the vertical sliding rail (1001-3), and a second rotary table (1001-9) provided on the lifting seat (1001-4), wherein the second mechanical arm (1002) is arranged on the second rotary table (1001-9).

8. The mining machinery welding system of claim 7, characterized by: A second driving motor (1001-5) is mounted on the transverse moving seat (1001-2), a power shaft of the second driving motor (1001-5) is provided with a second driving gear, the second driving gear is engaged with a second rack (1001-6), and the second rack (1001-6) is horizontally arranged on the door-shaped frame (9). A third driving motor (1001-7) is mounted on the transverse moving seat (1001-2), a power shaft of the third driving motor (1001-7) is connected with a driving screw rod (1001-8), and the driving screw rod (1001-8) is threadedly connected with the lifting seat (1001-4).

9. The mining machinery welding system of claim 8, characterized by: The weld joint detection assembly (11) comprises an industrial camera (1101) and an ultrasonic probe (1102), the industrial camera (1101) is used for shooting and identifying the appearance of a weld joint, and the ultrasonic probe (1102) is used for detecting the inside of the weld joint.

10. The mining machinery welding system of claim 1, wherein: The shielding plate (8) is a transparent plate, and a check door (12) is arranged on one side of the welding chamber (1). A crown block (13) is arranged in a front region corresponding to the refueling opening (4), and a track type moving trolley (14) is arranged below the crown block (13).

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