A welding apparatus comprises support members adapted to support parts to be welded, a slit being defined between planes of the support members to expose the parts to be welded. A linear actuator unit having a carriage linearly displaceable along the slit. A welding unit is mounted to the carriage having a torch located substantially below the planes of the support members, and is adapted to be in proximity to the parts via the slit to transmit current to the parts to weld same.

The present invention discloses an adaptive and rapid repairing device for single roller, which includes a working module and a mechanical arm module, which are fixedly connected, where the mechanical arm module is connected with a movable module; the working module includes a supporting frame, symmetrical dovetail grooves are opened in two sides of the supporting frame, the dovetail grooves are movably connected with four sliding supports symmetrically arranged along the supporting frame; a connecting rod support penetrates the two through holes opened in the top of the sliding support, the top end of the connecting rod support is hinged with a long connecting rod; the supporting frame is provided with a worm gear mounting support, the worm gear mounting support is equipped with worm gears and worms through rotating shafts, and the worm is fixedly connected with an output shaft of a worm motor.

The present invention provides improved systems for supporting and translating a robotic welder around a structural column to perform automatic welding of joints. The improved system permits a robotic welder to perform the required welds in at least half the time it would take a human welder, thereby significantly reducing construction costs, improving safety of construction, and improving accuracy of welding, and requiring less testing of the welds.

The present invention discloses a gantry cutting machine for pipe and flat plate, including a cutting assembly, a plate cutting mechanism, a pipe cutting mechanism and a crossbeam. The crossbeam is provided with a transverse driving unit. The cutting assembly is connected to the crossbeam. A cutting assembly mounting base is provided with a lifting-driving unit. The transverse driving unit includes a first gear, a first rack, a first motor and a first rail. The present invention provides a gantry cutting machine for pipe and flat plate to meet the demands in the field of numerically controlled cutting and machining of pipe products, which has a simple operation and is easy to use, and the clamping is flexible, so that the processing cost of pipe products can be reduced, and cutting and machining range of the numerically controlled cutting machine can be broadened.

An automatic and manual welding apparatus includes an operation changeover switch which is provided to be capable of switching a manual input mode for switching off power supplied to an infeed motor to and from an automatic input mode for applying power supplied to the infeed motor, so as to switch the rotation of the infeed motor automatically and manually. A control unit controls the infeed motor such that the power supplied to the forward and backward transfer motor is switched off when the input of the operation changeover switch is in a manual input mode and the power to the infeed motor is applied when the input of the operation changeover switch is in an automatic input mode.

A pipe assembly station for performing operations on a field joint during pipe assembly has an active rail extending around an opening through which the pipe can pass. Tool carriages are arranged to traverse along the active rail and around a periphery of the pipe. The station also comprises a standby position, distanced from the active rail and a switch arranged to transfer the tool carriage from the active rail to the standby position. By providing such a combination of a rail and a standby position, a tool carriage can be brought into position on the active rail to perform a pipe joining operation and can be subsequently set back to the standby position, where it is out of the way of operations taking place on the pipe. Such a switching arrangement allows for more effective use of the limited space around the joint.

A tab welding device, including a mounting base, a welding assembly, a swinging member and a driving assembly. The welding assembly is rotatably arranged on the mounting base. The swinging member is connected with the welding assembly. The driving assembly is provided with a moving end capable of reciprocating in a first direction, and the moving end is movably connected with the swinging member and is for driving the swinging member to swing to make the swinging member drive the welding assembly to rotate. With the tab welding device, the driving assembly drives the swinging member to swing, and the swinging member drives the welding assembly to rotate, so the angle of the welding assembly can be adjusted until the welding assembly is adjusted to an angle allowing a tab to be welded easily.

An automatic welding system for a pipe wherein an automatic welding head is rotatably installed on a pipe and welding is performed with a welding machine, and a chain is wound around and thereby installed on the pipe, the automatic welding head is rotatably installed along the chain, the chain is movably passed through openings formed on both sides of the automatic welding head, the chain is guided by a guide roller while being wound around a gear driven to rotate by a driving motor provided in the automatic welding head, and the pipe is precisely welded using the welding machine which is adjusted in position by a position adjustment unit of the automatic welding head under the control of a control device while wheels provided in the automatic welding head rotate along the pipe.

A transportable spool carrier includes a spool hub configured to receive a welding wire spool thereon. A handle is disposed a distance above the spool hub greater than the radial size of the spool hub such that the welding wire spool is transportable via the transportable spool carrier. The handle is vertically aligned with the longitudinal center portion of the spool hub axis to align the handle with a center of gravity of the welding wire spool when the welding wire spool is coupled to the transportable spool carrier. The transportable spool carrier may include two spaced feet configured to support the welding wire spool on a surface when the transportable spool carrier is decoupled from the frame. The spool hub may include an expandable cylinder that, when radially expanded the welding wire spool is locked to the spool hub.

Moving unit for moving two soldering assemblies connected by a coupling device, soldering system for selective wave soldering of circuit boards with such a moving unit, and associated method.