5106 results about "Spot welding" patented technology

The invention relates to the technical field of laser welding, in particular to a laser welding system control method for metal accessories. The method comprises the following steps that automobile industry metal fitting data are obtained, welding demand analysis is conducted according to the automobile industry metal fitting data, and therefore welding demand data are obtained; laser welding feature extraction and resistance spot welding feature extraction are carried out according to the welding demand data, so that laser welding data and resistance spot welding data are obtained; carrying out welding simulation according to the laser welding data and the resistance spot welding data so as to obtain welding simulation data; welding form feature extraction and welding strength feature extraction are carried out according to the welding simulation data, so that welding form data and welding strength data are obtained; and carrying out welding defect detection according to the welding form data and the welding strength data so as to obtain welding defect data. Automatic adjustment and accurate control of the laser welding process are achieved based on the laser welding technology.

Provided is a friction stir spot welded joint having high cross tensile strength even in the case where a steel sheet having a soft surface layer is used as a material to be welded. An annular groove is formed on an upper surface of an upper sheet out of overlapping steel sheets, and a shape and hardness of a welded portion are appropriately controlled simultaneously.

The purpose of the present invention is to provide: a high strength steel sheet and a high strength plated steel sheet which have a strength of 1180 MPa or more, which have excellent bendability and inter-steel-sheet cracking characteristics at spot-welding resistant parts HAZ, and from which it is possible to manufacture components with high dimensional accuracy; methods for producing the high strength steel sheet and the high strength plated steel sheet; and a member.　This high strength steel sheet has a prescribed component composition, has an effective Ti molar fraction (xTi, eff) of 0.001 or more as determined from xTi, eff = xTi-xN-xS (wherein each element symbol represents the molar fraction of a corresponding element in steel), and has a steel structure in which the area percentage of martensite is 80-99% and the total of the area percentage of ferrite and / or the volume percentage retained austenite is more than 0% but not more than 20% at a 1 / 4-position in the sheet thickness, the Si concentration at a 5-µm positon in the sheet thickness direction from the steel sheet surface is 0.10-0.60%, the number density of MnS present in Mn-segregated portions in the surface of the steel sheet is 5.0 pieces / mm2 or less, the standard deviation of Vickers hardness in the surface of the steel sheet is 15 or less, and the hardness fluctuation frequency per 1100 µm in the sheet width direction in the surface of the steel sheet is seven times or less.

The present disclosure provides a molding machine for flexible production of a rebar of bottom, web, and top plates of a precast small box girder, comprising a molding mainframe and a movable gantry welder disposed on an outlet end of the molding mainframe. The molding mainframe includes a frame, two synchronous lifters, a vertical movable sliding table, a plurality of upper support plates, and a plurality of comb-like support plates. A plurality of spot welding assemblies are disposed on an upper side and a lower side of an outlet end of the frame, a straightening rebar receiving assembly is mounted on the lower side and two bending assemblies are mounted on a left side and a right side of the outlet end of the frame, and a straightening rebar feeding assembly is disposed between the straightening rebar receiving assembly and the frame.

The invention provides iron core roll forming equipment and a forming process, and relates to the technical field of transformer manufacturing. An operation vertical plate is vertically arranged at the upper end of the base; the controller and the laser welding machine are fixedly hung on the operation vertical plate; one end of the operation vertical plate is rotationally provided with a material frame for storing iron sheets which are not slotted, and the other end of the operation vertical plate is provided with a winding roller for winding the slotted iron sheets. And a stamping mechanism and a cutting mechanism are arranged on the operation vertical plate between the material frame and the winding roller. Through mechanical linkage of the stamping mechanism, the winding driving mechanism, the correcting mechanism and the spot welding mechanism and cooperation of electric control signals, automation of the whole process of grooving, winding, thickness monitoring, cutting and welding of the iron core roll is achieved. A stamping-cutting-winding integrated machining mode is adopted, and the problems that in the prior art, in the process that too many iron sheet coiled materials are uniformly and completely slotted and then wound in advance, the occupied space is too large, and the coiled materials are prone to being uneasy to convey, bent and damaged due to slotting can be solved.

The invention relates to visual identification line drawing assembly welding equipment which comprises a welding conveying assembly, the welding conveying assembly comprises a platform frame and a conveying roller installed on the platform frame and used for conveying a packing machine plate, the conveying direction of the conveying roller is defined as the first direction, and the other horizontal direction perpendicular to the first direction is defined as the second direction; a self-walking line drawing assembly, a self-walking spot welding assembly and an auxiliary positioning assembly which move in a reciprocating mode in the first direction are arranged on the platform frame. According to the automatic line drawing and welding device, line drawing and welding of the packing machine plate are achieved through joint cooperation of the welding conveying assembly, the self-walking line drawing assembly, the self-walking spot welding assembly and the auxiliary positioning assembly, spraying drawing of visual recognition color lines of different colors can be achieved only through one-time walking, the line drawing efficiency is greatly improved, and the labor intensity of workers is lowered. And an automatic accurate assembling and positioning function and visual intelligent welding are realized.

The invention relates to wire harness welding equipment, and belongs to the technical field of wire harness machining, the wire harness welding equipment comprises a workbench, the workbench is provided with a feeding assembly, a correcting assembly, a cutting assembly, a receiving assembly, a grabbing assembly, a spot welding assembly and a wire conveying assembly, the workbench is provided with a control assembly, and the control assembly is connected with a first mounting plate; a first finger cylinder, a second finger cylinder and a third finger cylinder are mounted on the first mounting plate; the feeding assembly, the correcting assembly and the cutting assembly are arranged side by side, the receiving assembly can move to be parallel to the cutting assembly, the control assembly can drive a first mounting plate to transversely move in a reciprocating mode in the side-by-side direction of the feeding assembly, the correcting assembly and the cutting assembly and control the first mounting plate to ascend and descend, and the receiving assembly can move to the grabbing assembly. The grabbing assembly can grab welding materials on the material receiving assembly to the spot welding assembly, and the wire conveying assembly is used for conveying wire harnesses to the spot welding assembly. The multi-task parallel processing device has the effects that multi-task parallel processing can be conducted on the welding materials in the machining and transferring process, and the machining efficiency is improved.

A friction stir spot welding apparatus includes a pin member formed in a solid cylindrical shape, a shoulder member formed in a hollow cylindrical shape, the pin member being inserted in the shoulder member, a rotary actuator that rotates the pin member and the shoulder member on an axis that is in agreement with an axial center of the pin member, and a linear actuator that linearly moves each of the pin member and the shoulder member along the axis. A tip-end part of the shoulder member is formed in a tapered shape.

The invention relates to an automatic assembly spot welding system and method for ship workpieces. The automatic assembly spot welding system for the ship workpieces comprises a conveying mechanism, a storage mechanism, a secondary positioning mechanism, a carrying robot and a welding robot, the conveying mechanism comprises a conveying line and a positioning device arranged on the conveying line, and the positioning device is used for positioning a first workpiece to a preset position of the conveying line; the material storage mechanism comprises a material storage part and a visual identification device, and the visual identification device is used for obtaining category information and storage position information of a second workpiece in the material storage part; the secondary positioning mechanism is configured to perform original point positioning on a second workpiece; the transfer robot can transfer the second workpiece and adjust the posture of the second workpiece under the guidance of the visual guidance device; the welding robot is used for conducting automatic assembly spot welding on the first workpiece and the second workpiece. According to the automatic assembly spot welding system and method for the ship workpieces, automatic assembly spot welding operation is achieved, the labor cost is saved, the machining efficiency is high, and the welding quality is stable.

The invention discloses a method and system for detecting abnormal welding spots in the spot welding process. The method comprises the steps that a time sequence data sequence collected in real time in the welding process is obtained; calculating a first-order difference sequence of the time sequence data sequence; screening a target data segment representing a stable trend based on the first-order difference sequence; performing linear fitting on the first K data points of the target data segment to obtain a first trend direction; performing linear fitting on the last K data points of the target data segment to obtain a second trend direction; calculating the variable quantity of the first trend direction and the second trend direction; and when the variable quantity exceeds a preset threshold value, it is judged that welding is abnormal, and an alarm is triggered. The stable trend section is screened through the differential sequence, noise interference is effectively eliminated, and it is ensured that the quality criterion is based on reliable data. And whether the welding spot is abnormal or not is quickly and accurately judged, so that real-time and non-destructive spot welding quality on-line monitoring is realized.

The invention provides a method and system for detecting the flatness of a spot welding molded surface, and the method comprises the steps: S1, reading a model, recognizing a to-be-detected welding spot file, and reading all parts under a parent level of the to-be-detected welding spot file; s2, performing interference treatment to obtain a part having an interference relationship with the to-be-detected welding spot; s3, the connecting piece is subjected to interference treatment, and a lap joint face is obtained; s4, segmenting the lap joint surface; s5, making a tangent plane of the lap joint surface and shifting up and down to obtain an up-and-down shifting surface; and S6, calculating the flatness according to the distance from the welding molded surface of the to-be-detected welding spot to the up-down offset surface. The logic of the detection scheme is simplified, automatic detection is realized, and the detection result is faster and more accurate.

The invention discloses coreless motor rotor automatic spot welding equipment which is characterized in that a multi-station automatic assembling device comprises a middle fixing disc, a first rotating disc assembly, a first feeding mechanism, a first alignment mechanism, a second alignment mechanism, a spot welding mechanism, a resistance testing mechanism, a dispensing mechanism, a polishing mechanism and a discharging mechanism; the first rotating disc assembly is rotatably arranged on the periphery of the middle fixing disc, multiple sets of first positioning clamps are arranged on the first rotating disc assembly in the circumferential direction, and the winding coil finishing device comprises a second rotating disc assembly, a second feeding mechanism, a third alignment mechanism, a pin shaping mechanism, a cutting mechanism and a transferring mechanism. Through the arrangement, full-automatic production and machining of the hollow cup type rotor can be achieved, the production efficiency is greatly improved, and the labor cost is saved.

A friction-stir spot welding device includes a friction-stir spot welding tool including a pin, a shoulder having a hollow part into which the pin is inserted, and an oil agent interposed in an interlayer between an outer peripheral surface of the pin and an inner peripheral surface of the shoulder; and a control unit of the tool. The control unit executes first operation control of relatively moving the pin with respect to the shoulder in a state where the oil agent is held in the interlayer, and second operation control of relatively moving the pin with respect to the shoulder so that the oil agent is discharged from the interlayer to outside through a tip opening of the hollow part.

The invention relates to an automobile body-in-white welding process planning method, which comprises the following steps of: performing data acquisition through terminal equipment, collecting welding process data in a welding process, and monitoring the running state of a welding robot in real time; edge computing nodes are arranged on a welding site and are responsible for preprocessing collected welding process data and extracting knowledge in real time; the cloud constructs a welding process knowledge graph according to the existing enterprise historical data and the welding process data extracted by the edge end knowledge; and after the cloud establishes a welding process knowledge graph, optimizing body-in-white welding process parameters and carrying out optimization solution on a body-in-white welding path and a body-in-white welding spot welding sequence on the basis of an improved artificial neural network-based automobile body-in-white welding process planning method. The method can adapt to different welding scenes and requirements, the method can adapt to shapes and materials of different workpieces, and efficient and accurate welding is achieved.

The invention discloses a mechanical arm welding clamp for steel structure machining. Relates to the technical field of manipulator welding fixtures, and comprises workbenches, rotary tables are mounted on both sides of the top surface of the workbenches, rotating shafts are transversely and rotatably connected to the upper ends of the two workbenches, clamping assemblies are arranged at the upper ends of the workbenches, and a moving transmission assembly and a welding assembly are arranged at the rear ends of the workbenches; through cooperation of the hand wheel and the positioning screw rod, the two-way lead screw can be locked conveniently, and therefore the situation that a workpiece is too heavy and cannot be clamped is avoided; through cooperation of a jacking plate and a jacking air cylinder, a servo motor and a driving gear can be conveniently controlled to ascend and descend, then movement of a moving box and rotation of a mechanical arm are controlled, and therefore accurate positioning is facilitated; through cooperation of the first welding gun and the second welding gun, the mechanical arm can make continuous contact with a workpiece for welding or spot welding, so that the welding diversity is improved, and the welding modes of different positions of the workpiece are met; the device meets the requirement that different positions of a workpiece need different welding modes, and the welding efficiency is improved.

The invention relates to the technical field of titanium alloy welding deformation control, in particular to a device and method for controlling titanium alloy welding deformation, and the method comprises the following specific steps: S1, preparation before welding: determining a reversible deformation device according to a welding seam form of a titanium alloy part, and carrying out assembly and spot welding; the assembled titanium alloy welding part is fixed to a reversible deformation device, and it is ensured that the part does not deform in the welding process; s2, a welding process; a thermocouple is placed on the surface of a weld joint, a local heating belt and heat preservation cotton are laid, and the heating belt, the thermocouple and local heating control equipment are connected for heat treatment; and S4, measurement of welding deformation is carried out. According to the method, a complete and easy-to-operate technological process is constructed by combining pre-welding anti-deformation tool fixing and post-welding local heating treatment technologies, and the problem of welding deformation with considerable numerical values and complex forms generated by multiple welding procedures of a large complex titanium alloy structure is solved.

The invention discloses steel shell battery shell cover welding detection equipment which comprises a rack. The machine frame is provided with a bottom shell circulating conveying line, a bottom shell feeding carrying mechanical arm, a welding mechanism, a CCD camera, a welding jig conveying line, a shell cover carrying mechanical arm, a shell cover feeding mechanical arm, a detection carrying mechanical arm, a welding appearance detection mechanism, a transfer conveying platform, an air tightness detection mechanism, an air tightness detection carrying mechanical arm and a shell overturning and side erecting mechanism. The discharging carrying mechanical arm, the receiving tray conveying line, the welding mechanism and the CCD camera are all arranged on the gantry mounting support, and the welding pressing plate mechanism is arranged below the welding mechanism. The pressing plate mechanism comprises a spot welding pressing plate and a full welding pressing plate, and the spot welding pressing plate and the full welding pressing plate are controlled by a pressing plate transverse movement servo module to move. Spot welding, full welding, appearance detection after welding and air tightness detection of the battery bottom shell and the shell cover can be achieved, the welding and detection processes are completed in a full-automatic mode, and the production efficiency is improved.

The utility model discloses a welding head cleaning device which comprises a driving mechanism, a cleaning brush and a sliding mechanism, the driving mechanism comprises a driving part, a first elastic assembly and a second elastic assembly, the first elastic assembly is arranged on the side face of a rack, the driving part is arranged on the rack and is in driving connection with the second elastic assembly, the cleaning brush is arranged on the sliding mechanism, and the sliding mechanism is arranged on the rack in a sliding mode. The sliding mechanism is provided with a sawtooth-shaped clamping groove block, a plurality of tooth grooves are formed in the clamping groove block in an array mode, and the first elastic assembly and the second elastic assembly are movably clamped with the tooth grooves. According to the welding head cleaning device, the driving piece drives the first elastic assembly to replace the tooth groove, then the clamping groove block is reversely pulled to move, then the sliding table and the cleaning brush on the sliding table are driven to move, the adjustability of the cleaning face of the cleaning brush is improved, the problem that the cleaning effect is poor due to the fact that the welding head makes contact with a single cleaning area for a long time is solved, and therefore the spot welding quality is improved; and in addition, the whole structure of the mechanism is simple, and operation is convenient and fast.

The invention relates to the technical field of inductor coil preparation, in particular to a coil winding, paint stripping and spot welding all-in-one machine and a control system thereof.The coil winding, paint stripping and spot welding all-in-one machine comprises a rack, a wire supply mechanism, a wire stripping mechanism, a winding mechanism, a spot welding mechanism, a material returning mechanism, a demolding mechanism and a cutting mechanism; the wire stripping mechanism comprises a wire stripping cutter, a box body and a cutter driving motor, the wire winding mechanism comprises a material receiving platform, an upper cutting die, a lower cutting die and a wire winding cutter, the spot welding mechanism comprises an upper pole head, a lower pole head and a storage jig, the material returning mechanism comprises a station table and a reset air cylinder, and the demolding mechanism comprises a demolding air cylinder and a demolding ejection block. The cutting mechanism comprises a first stock bin, a second stock bin, a mechanical arm and a cutting die, the mechanical arm is used for placing the electrode plates on the containing jig and conveying the electrode plates subjected to spot welding to the cutting die, and all manufacturing links can be sequentially completed by clamping the workpieces in the automatic clamp and the multi-station conveying system at a time.

The utility model relates to the technical field of metal plate welding, and particularly discloses a tailor-welding device which comprises a carrying table, a forward and reverse rotation driving mechanism, a nut grabbing and placing mechanism and a welding mechanism. A nut vibration disc and a Y-axis moving platform are arranged on the carrying table in the Y-axis direction, and a vacuum suction cup is arranged on the Y-axis moving platform. A gantry truss is arranged on one side of the carrying table in the Y-axis direction in the X-axis direction; an X-axis moving platform is arranged on the side, facing the nut vibration disc and the Y-axis moving platform, of a cross beam of the gantry truss. The grabbing and placing mechanism comprises a first lifting column and a pneumatic inner supporting clamping jaw, the welding mechanism comprises a second lifting column and a spot welding gun, the forward and reverse rotation driving mechanism comprises a gear and a forward and reverse rotation driving assembly, and compared with an operation mode in the prior art, labor input is reduced, working efficiency is improved, and high economic value is achieved.

The invention is suitable for the technical field of aluminum alloy welding, and provides an aluminum alloy pipeline welding device and a welding method thereof.The aluminum alloy pipeline welding device comprises a welding unit and a slow cooling unit; the welding unit comprises a supporting frame, a displacement air cylinder, a displacement sliding block, an electric telescopic rod, a rotating disc, a sliding rail, an electric sliding block, an adjusting piece and a welding gun. The slow cooling unit comprises a fixing plate, a fixing block, a telescopic air cylinder, a telescopic plate, an arc-shaped rail, an electric arc block, a heating plate and an electric heating wire. The four to-be-welded areas of the aluminum alloy pipeline and the flange are divided, the four to-be-welded areas do not make contact with spot welding on the formal welding path, welding operation continues after impurities on the surface of the spot welding area are ground through the angle grinder, and therefore the strength and the sealing performance of a welding seam are improved, and the welding efficiency is improved. And the welding quality of the welding position of the aluminum alloy pipeline and the flange is improved.

The invention relates to a spot welding device for electronic component machining, and belongs to the technical field of spot welding devices.The spot welding device comprises a base, a driving air cylinder is fixed to the base, a positioning assembly is arranged at the top of the base, a connecting plate is fixed to the top of the positioning assembly, a conveying mechanism is arranged at the top of the connecting plate, and a supporting column is fixed to the top of the connecting plate; a displacement mechanism is arranged at the top of the supporting column, a spot welding mechanism is arranged at the top of the displacement mechanism, a supporting plate is fixed to the positioning assembly, a guiding and connecting plate and an extending plate are fixed to the front face of the supporting plate, a lifting mechanism is arranged at the top of the guiding and connecting plate, and a protection assembly is arranged on the lifting mechanism. According to the spot welding device for electronic component machining, through the arrangement of the conveying mechanism, automatic feeding of electronic plates is achieved, the driving air cylinder drives the positioning assembly to operate, accurate positioning of the electronic plates is achieved, overall accurate feeding is achieved, the feeding effect of the spot welding device is improved, and improvement of the working efficiency of the overall device is facilitated.

The invention relates to the technical field of brazing, in particular to a brazing production line for radiator fin machining and a welding process thereof.The brazing production line comprises a plasma spot welding module and a brazing furnace, and brazing flux spraying equipment and drying equipment are sequentially arranged between the plasma spot welding module and the brazing furnace; a production line conveying belt is arranged in the plasma spot welding module, the brazing flux spraying device, the drying device and the brazing furnace and used for conveying radiator fins. The brazing filler metal in the radiator fins is melted in the welding bin, then the radiator fins are driven to vibrate in the promoting bin, and therefore when the liquid brazing filler metal flows into base metal gaps, the constraint of surface tension can be broken through moderate vibration.

The invention relates to the technical field of welding equipment, in particular to automatic welding equipment for metal cover machining, which comprises a welding worktable, an automatic welding mechanism and a supporting plate, the automatic welding mechanism is positioned on the outer side of the welding worktable, the supporting plate is positioned above the welding worktable, and four moving ports are formed in the supporting plate. Moving plates are arranged at the four moving openings in a sliding and penetrating manner; a synchronizing mechanism for synchronously adjusting the relative positions of the four moving plates is arranged at the bottom of the supporting plate; according to the automatic welding equipment for metal cover machining, the collecting mechanism is arranged at the clamping plate, and the guiding-out mechanism is arranged on the welding workbench, so that when a metal cover is welded, smoke dust generated at the welding position can be rapidly collected; meanwhile, according to the collecting mechanism, the smoke collecting mode can be adjusted according to the requirements of spot welding or arc welding, then the smoke collecting efficiency is guaranteed, and the situation that the welding quality is affected by sundries accumulated in the welding process is effectively prevented.

The invention belongs to the technical field of welding devices, and particularly relates to an electric actuator shell automatic welding device which comprises a mounting frame, a supporting frame is fixedly connected to the upper side wall of the mounting frame, a control cabinet is fixedly connected to the side wall of the supporting frame, and a vertical electric push rod is fixedly connected to the upper side wall of the supporting frame. The moving end of the vertical electric push rod penetrates through the supporting frame. When the nameplate is welded to the surface of the electric actuator in a spot welding mode, the welding strength of the nameplate can be automatically detected, and when insufficient welding of a nameplate welding spot is detected, an operator can be timely reminded to carry out repair welding on the nameplate, so that the welding strength of the nameplate is guaranteed, and the welding efficiency of the nameplate is improved. And when four welding spots of the nameplate are detected, the abrasion degree of the welding electrode on the side can be analyzed by recording the frequency of pseudo soldering of a certain welding spot, and then the abraded welding electrode is polished, so that the welding performance of the welding electrode is ensured.

The utility model relates to mesh spot welding equipment. The mesh spot welding equipment comprises a controller, the reinforcing steel bar assembling platform comprises a frame body, a longitudinal positioning assembly used for positioning and placing longitudinal reinforcing steel bars and a transverse positioning assembly used for positioning and placing transverse reinforcing steel bars. The material preparation frame is provided with an upper-layer material preparation area and a lower-layer material preparation area which are used for placing the reinforcing steel bar assembling platform; the moving mechanism comprises a three-axis moving platform and a positioning frame used for positioning and placing the steel bar assembling platform, the three-axis moving platform is arranged close to the material preparation frame, the three-axis moving platform drives the positioning frame to move, and the positioning frame can directly face the upper-layer material preparation area and the lower-layer material preparation area; the spot welding mechanism comprises a first lifting assembly, a second lifting assembly and an electrode welding machine, the electrode welding machine comprises a machine table, a first electrode column and a second electrode column, the first lifting assembly drives the first electrode column to move up and down, and the second lifting assembly drives the second electrode column to move up and down. The mesh cutting device can be used for processing meshes of various specifications, and is simple and convenient to adjust and high in efficiency.

The present invention addresses the problem of suppressing cracks during bending processing even in the case of a patchwork blank in which a relatively large patchwork is joined, and the objective thereof is to provide such a press-molding method.　The present invention is a press-molding method for bending a patchwork blank obtained by overlaying a patchwork on the surface of a base blank. A press-formed component without cracks can be obtained by joining (spot welding) the patchwork and the base blank before press molding, only in one of two regions of the surface of the patchwork blank divided by the bent portion as a boundary in the case where there is one bent portion, and only in a region between two adjacent bent portions in the case where there are two or more bent portions, and, after press molding, joining (spot welding) the patchwork and the base blank in other regions.

The invention discloses AI automatic laser spot welding detection packaging equipment, and relates to the field of laser spot welding, the AI automatic laser spot welding detection packaging equipment comprises a control base, the upper end of the control base is connected with a laser welding mechanism, a bracket is fixed on the side surface of the control base, a rotating shaft is rotatably connected in the bracket, rotating rollers are fixed outside the rotating shaft, and a crawler belt is connected between the two rotating rollers; a plurality of clamping mechanisms arranged at equal intervals are fixed to the crawler belt, through grooves are formed in the positions, corresponding to the clamping mechanisms, of the crawler belt, grooves are formed in the side face of the control base and correspond to the laser welding mechanisms in position, and abutting mechanisms are arranged on one sides of the laser welding mechanisms and correspond to the abutting mechanisms in position. A conveying mechanism rotationally connected to the interior of the support is arranged, the conveying mechanism is located below the abutting mechanism, and a driving mechanism is arranged outside the rotating shaft; automation in laser electric welding can be improved, the stability of welding points is ensured, then the welding quality is improved, meanwhile, detection is conducted after welding, and automatic separation of defective products is achieved.

The invention discloses a supporting device for pipeline construction. The supporting device is mainly composed of a pair of breast boards, a connecting rod, a bolt, a magnet and a safety cover plate. The soil retaining plate tightly abuts against the wall of the pipeline slotting, an inserting groove in the inner side is matched with an elastic pin to be preliminarily fixed to a clamping groove in the end of the connecting rod, then the soil retaining plate is further fastened through a second bolt hole corresponding to a first bolt hole and a bolt, spot welding is conducted on the contact portion through a shape memory alloy welding material, and the connecting rod is telescopic. The magnets are arranged in the containing cavities of the connecting rods and connected with the ends of the bolts in a magnetic attraction mode, the connecting stability is enhanced, the top of the breast board is covered with the safety cover plate, and the construction safety is guaranteed. The supporting device provided by the invention is ingenious in structural design, a sloping procedure is not needed, the stability is greatly improved by utilizing multiple connection combinations of bolts, spot welding and magnetic attraction, and meanwhile, the shape memory alloy welding material is combined with the unique structural design, so that rapid mounting and dismounting are realized, and the construction efficiency is effectively improved.

The invention relates to the technical field of forge piece forming, in particular to a deep-cavity thin-wall support forge piece, a forging die and a forming method.The deep-cavity thin-wall support forge piece is characterized in that a heated round bar is subjected to roll forging to obtain a preformed blank, and oxide skin of the blank obtained after roll forging is removed; putting the prefabricated blank into a pre-forging cavity of a forming die, and performing pre-forging forming; after pre-forging is finished, the pre-forged piece is transferred into a precision forging cavity of the same forming die to be subjected to precision forging forming, and a bilaterally symmetrical precision forging piece is obtained; putting the bilaterally symmetrical precision forgings into a slicing die frame for trimming, and cutting off flashes; cutting the bilaterally symmetrical precision forgings subjected to cold shaping from the shunting bin through a cutting device, and separating the bilaterally symmetrical precision forgings into two independent single forgings; forming defects are eliminated, and the forging yield is improved to the level of stable mass production; the thickness tolerance of the functional surface of the product is ensured, the spot welding current stability and the welding strength are ensured, the assembly requirement is met, and the dependence on subsequent machining is reduced; the material cost is reduced and the mold life is prolonged.