Arc voltage tracking device for automatic TIG surfacing in narrow space

Abstract

The utility model discloses an arc voltage tracking device for automatic TIG surfacing in a narrow space. The arc voltage tracking device comprises a base main body, a retainer, a guide plate traction frame, a sliding block, two groups of driving mechanisms, two groups of welding gun assemblies and a control module, the driving mechanism is composed of a driving motor, a lead screw transmission mechanism and a control rod. The welding gun assembly is composed of a gun plate, a gun lifting guide plate, a camera shooting support, a TIG welding gun, a wire feeding assembly, a camera, a first rotating shaft and a second rotating shaft. The base body is formed by fixedly connecting a trunking base and a TIG welding gun base, and retainers are fixedly installed on the trunking base and the TIG welding gun base. The two inner wall pile TIG welding guns are spaced by a certain horizontal distance, and each TIG welding gun is provided with a corresponding camera, a corresponding wire feeding assembly and a corresponding arc voltage tracking device. All the welding auxiliary devices can enter the small-diameter pipe fitting to assist the TIG welding gun in completing welding track surfacing of the corresponding pipe fitting, and automatic arc voltage tracking TIG welding in a narrow space is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of surfacing equipment, especially relates to an arc pressure tracking device for automatic TIG surfacing in a narrow space. BACKGROUND

[0002] For the inner wall automatic surfacing of small diameter pipe fittings, due to the narrow space in the pipe, the diameter inner wall surfacing welding torch component of the conventional structure is too large in size, and it is difficult to enter the inside of the small diameter pipe. The design difficulty of the welding torch component for the inner wall automatic surfacing of a small diameter long pipe lies in that when two welding torches enter the pipe for welding, not only the welding torch layout problem in the narrow space needs to be considered, but also the surfacing effect needs to be considered.

[0003] The prior art has the problem that the control rod connected with the welding torch component is about 12m in length, which is relatively long, and after the equipment is put into welding production, very fine maintenance is needed.

[0004] When the welding torch runs in the welded steel pipe, a little resistance will cause jamming and possible damage to the control rod. To ensure smooth running of the control rod, high equipment precision is needed, which greatly increases the cost required by the production equipment. SUMMARY

[0005] The utility model wants to solve the technical problem that provide a kind of arc pressure tracking device for automatic TIG surfacing in a narrow space, and welding torch component part can move in narrow space and carry out surfacing operation.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes: an arc pressure tracking device for automatic TIG surfacing in a narrow space, including base body, retainer, guide plate traction frame, sliding block, two groups of driving mechanisms, two groups of welding torch assemblies and control module;

[0007] The driving mechanism is composed of a driving motor, a screw transmission mechanism and a control rod;

[0008] The welding torch assembly is composed of a gun plate, a gun lifting guide plate, a camera support, a TIG welding torch, a wire feeding assembly, a camera, a first rotating shaft and a second rotating shaft;

[0009] The base body is composed of a wire slot base and a TIG welding torch base fixed connection, and the wire slot base and the TIG welding torch base are both fixedly installed with a retainer;

[0010] Two groups of driving motors and screw rod transmission mechanisms are fixedly installed in the wire slot, the output shaft of the driving motor is in transmission connection with the driving end of the screw rod transmission mechanism, the sliding block is fixedly connected with the executing end of the screw rod transmission mechanism, the two control rods on the front and back sides are slidingly installed in the retainer, the control rods are also fixedly connected with the sliding block and the guide plate traction frame at the two ends, the gun plate is rotatably installed on the wire slot base through the first rotating shaft, the gun lifting guide plate is fixedly installed on the guide plate traction frame, the camera support is fixedly installed at the outer end of the gun plate, the camera is fixedly installed on the camera support, the TIG welding gun and the wire feeding assembly are fixedly installed on the gun plate, the second rotating shaft is symmetrically and fixedly installed on the front and back sides of the gun plate, the inner plate surface of the gun lifting guide plate is provided with a gun lifting notch, the second rotating shaft is slidingly embeddedly installed in the gun lifting notch, and the driving motor, the TIG welding gun, the wire feeding assembly and the camera are connected to the control module through a circuit.

[0011] Preferably, the camera support is fixedly installed with an oblong hole, and the camera is fixedly installed on the oblong hole of the camera support through a screw rod and a lock nut.

[0012] Preferably, the top of the wire slot base is provided with a bent flip plate structure.

[0013] Preferably, the retainer is provided with a U-shaped structure with a wing plate.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] Two inner wall TIG welding guns are spaced apart by a certain horizontal distance, each TIG welding gun is provided with a corresponding camera, a wire feeding assembly and a camera arc pressure tracking device. These welding auxiliary devices can enter the small diameter pipe and assist the TIG welding gun to complete the welding track of the corresponding pipe, realize automatic arc pressure tracking TIG welding in a narrow space, and reduce the volume of the welding gun components that need to enter the pipe, increase the rigidity of the base body through the setting of the retainer, and avoid the inclination problem of the base body due to the excessive length.

[0016] 2. The arc pressure tracking mechanism is installed close to the TIG welding gun, which ensures higher arc pressure tracking accuracy of the TIG welding gun and improves the build-up welding quality.

[0017] 3. By arranging two groups of driving mechanisms in the wire slot of the wire slot base, the length requirement of the control rod is reduced, the control rod is relatively short, the maintenance is simple after the equipment is put into welding production, the maintenance cost is reduced, and the equipment use experience is greatly improved.

[0018] 4. When the equipment is running, the short control rod can ensure smooth movement, the equipment precision requirement is not high, and the cost of the production equipment is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a structural diagram of the present invention.

[0021] Figure 2 This is a structural diagram showing the arrangement of two sets of welding torch assemblies.

[0022] Figure 3 This is a structural diagram of the cable tray base.

[0023] Figure 4 This is a structural diagram of the welding torch base.

[0024] Figure 5 This is a 3D view of the TIG welding torch mounting structure.

[0025] Figure 6 This is the front view of the TIG welding torch mounting structure.

[0026] Figure 7 This is a structural diagram of the gun-raising guide plate.

[0027] Figure 8 This is a schematic diagram of the cage structure. Detailed Implementation

[0028] The present invention will now be described in detail with reference to specific embodiments:

[0029] like Figures 1 to 8 The arc voltage tracking device shown is for automatic TIG welding in confined spaces, including a base body 1, a retainer 3, a guide plate traction frame 4, a slider 5, two sets of drive mechanisms, two sets of welding gun assemblies, and a control module.

[0030] The drive mechanism consists of a drive motor 2, a lead screw transmission mechanism 201, and a control rod.

[0031] The welding torch assembly consists of a torch plate 7, a torch lifting guide plate 8, a camera bracket 9, a TIG welding torch 10, a wire feeding assembly 11, a camera 12, a first rotating shaft 13, and a second rotating shaft 14.

[0032] The base body 1 is composed of a wire trough base 101 and a TIG welding gun base 102 fixedly connected. A retainer 3 is fixedly installed on both the wire trough base 101 and the TIG welding gun base 102. The guide plate traction frame 4 is slidably installed on the wire trough base 101.

[0033] Two groups of driving motor 2 and screw drive mechanism 201 are fixedly installed in the wire slot 1011, the output shaft of the driving motor 2 is in transmission connection with the driving end of the screw drive mechanism 201, the sliding block 5 is fixedly connected with the execution end of the screw drive mechanism 201, the screw drive mechanism 201 is composed of a transmission screw rod and a transmission screw sleeve, the transmission screw rod is fixedly installed in the wire slot 1011 through a ball bearing and a bearing seat, the bearing seat is fixedly installed in the wire slot 1011, the retainer of the ball bearing is fixedly installed in the bearing seat, the transmission screw rod is fixedly installed in the rotating body of the ball bearing, the transmission screw sleeve is threadedly sleeved on the transmission screw rod, the connecting plate is fixedly installed on the transmission screw sleeve, the transmission screw rod is in transmission connection with the output shaft of the driving motor 2 as the driving end, and the transmission screw sleeve is the execution end, the sliding block 5 is fixedly connected with the transmission screw sleeve through a screw rod and a lock nut, the two control rods 6 on the front and back sides are slidingly installed in the retainer 3, each group of driving mechanisms drives one of the control rods 6 to drive each group of welding gun assemblies, the two ends of the control rod 6 are fixedly connected with the sliding block 5 and the guide plate traction frame 4 respectively, the gun plate 7 is rotatably installed on the wire slot base 101 through a first rotating shaft 13, the gun lifting guide plate 8 is fixedly installed on the guide plate traction frame 4, the camera support 9 is fixedly installed at the outer end of the gun plate 7, the camera 12 is fixedly installed on the camera support 9, the TIG welding gun 10 and the wire feeding assembly 11 are fixedly installed on the gun plate 7, the second rotating shaft 14 is symmetrically and fixedly installed on the front and back sides of the gun plate 7, the inner plate surface of the gun lifting guide plate 8 is provided with a gun lifting notch 801, and the second rotating shaft 14 is slidingly installed in the gun lifting notch 801. The driving motor 2, the TIG welding gun 10, the wire feeding assembly 11 and the camera 12 are connected to the control module through a circuit.

[0034] The camera support 9 is fixedly installed with an oblong hole, the camera 12 is fixedly installed on the oblong hole of the camera support 9 through a screw rod and a lock nut, and the installation position and angle of the camera 12 can be adjusted in the oblong hole after the lock nut is loosened.

[0035] The top of the wire slot base 101 is provided with a bent flip plate structure 1102, the retainer 3 is provided with a U-shaped structure with a wing plate, the bent flip plate structure 1102 facilitates supporting and positioning the wing plate, the inner wall of the U-shaped structure supports the inner wall of the wire slot base 101, the structural strength of the wire slot base 101 can be increased, and deformation of the wire slot base 101 can be avoided.

[0036] The driving motor 2 drives the driving end of the screw rod transmission mechanism 201 to rotate, and drives the execution end and the sliding block 5 to move. The sliding block 5 drives the control rod 6 and the guide plate traction frame 4, and the gun lifting guide plate 8 to move synchronously. When the gun lifting guide plate 8 moves outward, the gun lifting notch 801 slides relative to the second rotating shaft 14. Since the gun lifting notch 801 is arranged in an inclined structure, the supporting position of the gun lifting notch 801 on the second rotating shaft 14 changes when the gun lifting guide plate 8 moves, thereby driving the upward movement and downward movement of the gun plate 7, and achieving the purpose of adjusting the angle of the gun plate 7 and the components mounted thereon around the first rotating shaft 13. According to the program set by the control module, the TIG welding gun 10 moves back at the set speed. The positions of the two TIG welding guns 10 on the base body 1 combine the different requirements of the two times of surfacing and the limitation of the position space. The TIG welding gun can simultaneously perform automatic surfacing with arc pressure tracking function in the narrow space inside the pipeline, thereby improving the surfacing efficiency.

[0037] The two TIG welding guns 10 are separately controlled by two driving mechanisms. The two TIG welding guns 10 can work simultaneously. The welding process is as follows:

[0038] 1. When the surfacing starts, the TIG welding gun 10 moves from the rotating head frame end to the inside of the pipeline, and the first TIG welding gun 10 that enters first performs the first layer of surfacing.

[0039] 2. When the other TIG welding gun 10 enters the inside of the pipeline, the second TIG welding gun 10 that enters later performs the second layer of surfacing on the basis of the first layer of surfacing. At this time, the two TIG welding guns 10 are both working.

[0040] 3. When the welding work is about to end, the TIG welding gun 10 that performs the first layer of surfacing completes the surfacing work first. At this time, the TIG welding gun 10 that performs the second layer of surfacing is still working.

[0041] 4. After the second layer of surfacing is completed, the welding work is completed, and the whole welding gun assembly exits the pipeline.

Claims

1. An arc voltage tracking device for automatic TIG surfacing in tight spaces, characterized by: It comprises a base body (1), a holder (3), a guide plate traction frame (4), a sliding block (5), two groups of driving mechanisms, two groups of welding gun assemblies and a control module; The driving mechanism is composed of a driving motor (2), a screw rod transmission mechanism (201) and a control rod. The welding gun assembly is composed of a gun plate (7), a gun lifting guide plate (8), a camera support (9), a TIG welding gun (10), a wire feeding assembly (11), a camera (12), a first rotating shaft (13) and a second rotating shaft (14). The base body (1) is fixedly connected by a wire slot base (101) and a TIG welding gun base (102), and the wire slot base (101) and the TIG welding gun base (102) are fixedly installed with the holder (3). The two groups of driving motors (2) and the screw rod transmission mechanisms (201) are fixedly installed in the wire slot (1011), the output shaft of the driving motor (2) is in transmission connection with the driving end of the screw rod transmission mechanism (201), the sliding block (5) is fixedly connected with the execution end of the screw rod transmission mechanism (201), the two control rods (6) are slidingly installed in the holder (3), the two ends of the control rod (6) are fixedly connected with the sliding block (5) and the guide plate traction frame (4) respectively, the gun plate (7) is rotatably installed on the wire slot base (101) through the first rotating shaft (13), the gun lifting guide plate (8) is fixedly installed on the guide plate traction frame (4), the camera support (9) is fixedly installed on the outer end of the gun plate (7), the camera (12) is fixedly installed on the camera support (9), the TIG welding gun (10) and the wire feeding assembly (11) are fixedly installed on the gun plate (7), the second rotating shaft (14) is symmetrically and fixedly installed on the front and rear sides of the gun plate (7), the inner plate surface of the gun lifting guide plate (8) is provided with a gun lifting notch (801), the second rotating shaft (14) is slidingly embeddedly installed in the gun lifting notch (801), and the driving motor (2), the TIG welding gun (10), the wire feeding assembly (11) and the camera (12) are connected to the control module through a circuit.

2. The arc pressure tracking device for automatic TIG surfacing in tight spaces according to claim 1, characterized in that: The camera support (9) is fixedly installed with an oblong hole, and the camera (12) is fixedly installed on the oblong hole of the camera support (9) through a screw rod and a lock nut.

3. The arc pressure tracking device for automatic TIG surfacing in tight spaces according to claim 1, characterized in that: The wire slot base (101) is provided with a bent flap structure (1102) at the top.

4. The arc pressure tracking device for automatic TIG surfacing in tight spaces according to claim 1, characterized in that: The holder (3) is provided in a U-shaped structure with a wing plate.

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