Ultrasonic stress control test device for metal welding and machining residual stress

Abstract

The application relates to the technical field of metal welding processing equipment, in particular to a metal welding and machining residual stress ultrasonic stress regulation and control test device, which comprises two groups of fixing structures, stress removal structures are hingedly connected between the two groups of fixing structures, and expansion structures are detachably connected between the two groups of fixing structures; the expansion structures correspond to the stress removal structures and are used for extruding the stress removal structures to move; according to the size of metal pieces, a proper number of supporting plates and ultrasonic impact guns are installed, so that the use amount of the supporting plates can be adjusted according to actual use conditions; the fixing plates and the supporting plates can be hingedly connected through detachable hinges between the supporting plates and the fixing plates, so that the fixing plates and the supporting plates can be fixed in a wrapping mode or an adsorption mode on metal pieces with different shapes, thereby improving the convenience and use effect of stress removal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal welding processing equipment, in particular to a metal welding and machining residual stress ultrasonic stress regulation test device. BACKGROUND

[0002] After the metal is welded, welding stress and welding deformation will inevitably exist, and the weld is prone to generate large welding residual stress, thereby generating cracks and even breaking. The existing stress removal is mostly through the construction personnel holding the ultrasonic stress removal machine to eliminate the stress. This method is more cumbersome and has low efficiency. Therefore, the metal welding and machining residual stress ultrasonic stress regulation test device is proposed to facilitate the stress elimination of metal pieces of different shapes and improve the use convenience. SUMMARY

[0003] In view of the problems in the prior art, the present application provides a metal welding and machining residual stress ultrasonic stress regulation test device to facilitate the stress elimination of metal pieces of different shapes and improve the use convenience.

[0004] The technical solution adopted by the present application to solve the technical problem is a metal welding and machining residual stress ultrasonic stress regulation test device, which comprises two groups of fixing structures, a stress removal structure hingedly connected between the two groups of fixing structures, and an expansion structure detachably connected between the two groups of fixing structures. The expansion structure corresponds to the stress removal structure, and the expansion structure is used to extrude the stress removal structure to move.

[0005] By adopting the above technical solution, the stress removal structure of appropriate size is installed according to the size and shape of the metal piece, so as to facilitate the wrapping or adsorption type fixation of metal pieces of different shapes and eliminate the stress of metal pieces of different shapes, thereby improving the use convenience.

[0006] After the stress removal structure is installed, the fixing structure is adsorbed to the surface of the metal piece. After the adsorption of the fixing structure to the surface of the metal piece is completed, the stress removal structure also contacts the surface of the metal piece. The expansion structure extrudes the stress removal structure, so that the contact effect of the stress removal structure and the surface of the metal piece is more stable, thereby improving the use effect.

[0007] Specifically, the two groups of fixing structures each include a fixing plate, one side of the fixing plate is fixedly connected with at least one group of communication pipes, one end of the communication pipe away from the fixing plate is connected with a suction cup, the inside of the side of the fixing plate close to the communication pipe is provided with a communication cavity, the communication pipe is in communication with the inside of the communication cavity, the inside of the fixing plate is provided with a negative pressure extraction structure, the negative pressure extraction structure is in communication with the communication cavity, the upper surface of the fixing plate is provided with an opening penetratingly arranged, the outside of the fixing plate is slidably connected with a fixing block, the fixing block is located between the suction cup and the opening, the stress removal structure is hingedly connected with the lower surface of the fixing block, and the expansion structure penetrates through the openings of the two groups of fixing plates.

[0008] By adopting the above technical scheme, the suction cup on the fixing block is adsorbed to the surface of the metal piece according to the specific welding range and shape of the metal piece, so as to determine the working range of the stress removal structure, and when the fixing block is fixed, the gas in the communication cavity is extracted by the negative pressure extraction structure, so that negative pressure is generated in the communication cavity, and the adsorption effect of the suction cup is further improved.

[0009] And by penetrating the expansion structure through the openings of the two groups of fixing plates, the stress removal structure is extruded by the expansion of the expansion structure, so as to improve the stability of the stress removal structure.

[0010] Specifically, the stress removal structure includes a plurality of groups of support plates distributed from top to bottom, adjacent two groups of support plates are connected through detachable hinges, the support plates are hingedly connected with the fixing plates through detachable hinges, and the middle part of the support plate is fixedly connected with an ultrasonic impact gun.

[0011] By adopting the above technical scheme, a proper number of support plates are installed according to the size of the metal piece, so as to facilitate the adjustment of the use amount of the support plates according to the actual use condition.

[0012] At the same time, the support plates and the fixing plates are also hingedly connected through detachable hinges, so as to facilitate the fixing plates and the support plates to be fixed in a wrapping or adsorption mode to different shapes of metal pieces, and improve the convenience and use effect of stress removal.

[0013] When the expansion structure expands, the support plates are extruded to move, and when the support plates move, the fixing block moves synchronously, and when the fixing block moves to a certain position, the ultrasonic impact gun extrudes and contacts the surface of the metal piece, and at the same time, the ultrasonic impact gun removes the stress of the metal piece.

[0014] Specifically, the expansion structure includes a flexible plate, one side of the flexible plate close to the stress removal structure is provided with an expansion pad, one side of the expansion pad is in contact with the support plate, the upper and lower ends of the flexible plate and the expansion pad respectively penetrate through the opening, the inside of the fixing plate is provided with an extrusion inflation structure, and the extrusion inflation structure is used to drive the expansion of the expansion pad.

[0015] By adopting the technical scheme, the upper and lower ends of the flexible plate and the expansion pad are respectively passed through the openings, and the flexible plate is used to ensure that the expansion pad can be extruded to the side of the stress removal structure during expansion;

[0016] By driving the extrusion inflation structure to drive the expansion pad to expand, the support plate is moved when the expansion pad expands, the support plate drives the ultrasonic impact gun to move synchronously when moving, and the stability of the ultrasonic impact gun and the surface of the metal part is improved, and the use effect is improved.

[0017] Specifically, the flexible plate and the expansion pad are provided with a plurality of groups of through openings, the openings correspond to a plurality of groups of ultrasonic impact guns, and the plurality of groups of ultrasonic impact guns are respectively located in the openings.

[0018] By adopting the technical scheme, one end of the plurality of groups of ultrasonic impact guns is respectively passed through the openings on the corresponding flexible plate and expansion pad, so that the stability of the ultrasonic impact gun is improved, and the expansion pad is better extruded to move the support plate during expansion, and the use effect of the ultrasonic impact gun is improved.

[0019] Specifically, the negative pressure extraction structure includes a first piston cavity arranged in the fixed plate and a second piston cavity arranged on the side of the first piston cavity away from the suction cup, a sliding hole is in communication between the first piston cavity and the second piston cavity, a first piston plate is sealingly and slidably connected in the first piston cavity, and a second piston plate is sealingly and slidably connected in the second piston cavity. A piston rod is fixedly connected between the first piston plate and the second piston plate, and the piston rod passes through the sliding hole and is sealingly and slidably connected with the sliding hole.

[0020] A first air inlet hole is arranged on the lower surface of the fixed block, the first air inlet hole is in communication with the inside of the end of the first piston cavity away from the second piston cavity, a communication valve and a second air inlet hole are arranged on the upper surface of the fixed plate, the communication valve is in communication with the inside of the communication cavity, the second air inlet hole is in communication with the side of the second piston cavity close to the first piston cavity, and the second air inlet hole is in communication with the communication valve through a pipeline.

[0021] By adopting the technical scheme, the first air inlet hole is connected to the gas source, the gas enters the first piston cavity through the first air inlet hole and drives the first piston plate to move, the piston rod moves synchronously when the first piston plate moves, and the second piston plate in the second piston cavity moves, the suction force is generated when the second piston plate moves, and the gas in the communication cavity is extracted by the action of the second air inlet hole and the communication valve. In this way, negative pressure is generated in the suction cup, and the adsorption effect of the suction cup is improved.

[0022] Specifically, the second piston cavity is communicated with the opening of the fixed plate away from the one end of the piston rod, the second piston plate is fixedly connected with the connecting rod away from the one side of the piston rod, one end of the connecting rod is fixedly connected with the extrusion plate, the opening of the fixed plate is provided with the extrusion groove corresponding to the extrusion plate, and the extrusion plate is extrudedly contacted with the one side of the inflatable pad away from the flexible plate.

[0023] By adopting the above technical scheme, when the first piston plate drives the second piston plate to move synchronously through the piston rod, the movement of the second piston plate drives the connecting rod to move, and when the connecting rod moves, the extrusion plate moves synchronously, the extrusion plate is extrudedly contacted with the one side of the inflatable pad during movement, and when the extrusion plate moves to a certain position, the inflatable pad and the flexible plate are extruded into the extrusion groove, so that the flexible plate and the inflatable pad are fixed, displacement of the inflatable pad during inflation is prevented, and the inflation effect of the inflatable pad is improved.

[0024] Specifically, the upper surface of the fixed plate is provided with a pressure relief valve, the pressure relief valve is communicated with the inside of the one end of the first piston cavity away from the second piston cavity, one side of the flexible plate is provided with an air inlet nozzle communicated with the inflatable pad, and the pressure relief valve is communicated with the air inlet nozzle through a pipeline.

[0025] By adopting the above technical scheme, when the first piston plate moves to a certain position, the extrusion plate is extruded into the extrusion groove by the connecting rod, so that the flexible plate and the inflatable pad are extruded and fixed, and at this time, the first piston plate cannot continue to move.

[0026] When the gas source continues to enter the first piston cavity through the first air inlet hole, at this time, the gas in the first piston cavity enters the inflatable pad through the pipeline and the air inlet nozzle under the action of the pressure relief valve, so that the inflatable pad is inflated, the inflatable pad extrudes the support plate during inflation, the support plate drives the fixed block to slide on the fixed plate, and in turn drives the ultrasonic impact gun to extrude the surface of the metal piece, so that the stress generated during welding of the welded metal piece is eliminated.

[0027] Specifically, the two groups of the suction cups are fixedly connected with the magnets inside, the middle part of the magnet is provided with a through hole penetratingly arranged, and the through hole is communicated with the inside of the communication pipe.

[0028] By adopting the above technical scheme, the magnet is adsorbed on the surface of the metal piece, the stability of the fixed plate can be improved, and at the same time, the suction cup is communicated with the inside of the communication cavity through the through hole and the communication pipe under the action of the through hole, so that the suction force is generated when the second piston plate moves, the gas in the communication cavity is extracted under the action of the second air inlet hole and the communication valve, so that the negative pressure is generated in the suction cup, and the adsorption of the suction cup is further improved.

[0029] The beneficial effects of the present application are as follows:

[0030] (1) The metal welding and machining residual stress ultrasonic stress regulation test device, according to the size of the metal piece, a proper number of support plates and ultrasonic impact guns are installed, so that the use amount of the support plates can be adjusted according to the actual use condition; the support plates and the fixed plates are hinged through detachable hinges, so that the fixed plates and the support plates can be wrapped or adsorbed to fix metal pieces of different shapes, thereby improving the convenience and use effect of stress removal.

[0031] (2) The metal welding and machining residual stress ultrasonic stress regulation test device, when the suction cup on the fixed block adsorbs the surface of the metal piece, the first air inlet hole is connected to the gas source to drive the second piston plate to move, when the second piston plate moves, the suction force is generated, the gas in the communication cavity is sucked out through the second air inlet hole and the communication valve, so that the negative pressure is generated in the suction cup, and the adsorption effect of the suction cup is improved.

[0032] (3) The metal welding and machining residual stress ultrasonic stress regulation test device, when the first air inlet hole is connected to the gas source to drive the second piston plate to move, the connecting rod is driven to move by the movement of the second piston plate, the extrusion plate is synchronously moved when the connecting rod moves, the extrusion plate is in extrusion contact with one side of the inflatable pad when moving, the inflatable pad and the flexible plate are extruded into the extrusion groove, so that the flexible plate and the inflatable pad are fixed, displacement of the inflatable pad during expansion is prevented, and the expansion effect of the inflatable pad is improved.

[0033] (4) The metal welding and machining residual stress ultrasonic stress regulation test device, when the gas source continues to enter the first piston cavity through the first air inlet hole, the gas in the first piston cavity enters the inflatable pad through the pipeline and the air inlet nozzle under the action of the pressure relief valve, so that the inflatable pad expands, the support plate is extruded by the inflatable pad during expansion, the fixed block is driven to slide on the fixed plate by the support plate, and the ultrasonic impact gun is extruded to the surface of the metal piece, so that the stress generated by welding can be eliminated for the metal piece after welding. BRIEF DESCRIPTION OF DRAWINGS

[0034] The application will be further described in conjunction with the drawings and examples.

[0035] Figure 1 It is an expansion pad connection structure of the application.

[0036] Figure 2 It is an ultrasonic impact gun installation connection structure diagram of the application.

[0037] Figure 3 It is an axonometric view of the application.

[0038] Figure 4It is a schematic view of the side view structure of the present application;

[0039] Figure 5 It is a schematic view of the fixed plate connecting structure of the present application;

[0040] Figure 6 It is a schematic view of the fixed plate cross-sectional structure of the present application;

[0041] Figure 7 It is a schematic view of the expansion pad in the opening connecting structure of the present application;

[0042] Figure 8 It is a schematic view of the connecting structure when the extrusion plate moves;

[0043] Figure 9 It is a schematic view of the connecting structure when the stress is eliminated for the ring;

[0044] Figure 10 It is a schematic view of the connecting structure when the stress is eliminated for the metal plate part;

[0045] In the figure: 1, fixed plate; 2, communication pipe; 3, suction cup; 4, communication cavity; 5, opening; 6, fixed block; 7, support plate; 8, detachable hinge; 9, ultrasonic impact gun; 10, flexible plate; 11, expansion pad; 12, opening; 13, first piston cavity; 14, second piston cavity; 15, sliding hole; 16, first piston plate; 17, second piston plate; 18, piston rod; 19, first air inlet hole; 20, communication valve; 21, second air inlet hole; 22, connecting rod; 23, extrusion plate; 24, extrusion groove; 25, pressure relief valve; 26, air inlet; 27, magnet; 28, through hole. DETAILED DESCRIPTION

[0046] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application will be further described below in combination with specific embodiments.

[0047] In order to facilitate the elimination of stress for metal parts of different shapes and improve the convenience of use, as an embodiment of the present application, as shown in Figures 1-3 The metal welding and machining residual stress ultrasonic stress regulation test device provided by the present application comprises two sets of fixed structures, a stress removal structure is hinged between the two sets of fixed structures, and an expansion structure is detachably connected between the two sets of fixed structures, the expansion structure corresponds to the stress removal structure, and the expansion structure is used to extrude the stress removal structure to move.

[0048] In use, according to the size and shape of the metal part, a stress removal structure of appropriate size is installed, which facilitates the wrapping or adsorption type fixation of metal parts of different shapes and the elimination of stress for metal parts of different shapes, and improves the convenience of use.

[0049] When the stress removal structure is installed, it is adsorbed on the surface of the metal piece by the fixing structure, and when the fixing structure is adsorbed on the surface of the metal piece, the stress removal structure is also in contact with the surface of the metal piece, and the expansion structure is used to press the stress removal structure, so that the contact effect of the stress removal structure and the surface of the metal piece is more stable, thereby improving the use effect.

[0050] In order to improve the stability of the stress removal structure, as shown in Figure 3 , Figure 5 , Figure 6 The application also includes two groups of fixing structures, each including a fixing plate 1, at least one group of communication pipes 2 fixedly connected to one side of the fixing plate 1, a suction cup 3 connected to the end of the communication pipe 2 away from the fixing plate 1, a communication cavity 4 provided inside the side of the fixing plate 1 close to the communication pipe 2, the communication pipe 2 being in communication with the inside of the communication cavity 4, a negative pressure extraction structure provided inside the fixing plate 1, the negative pressure extraction structure being in communication with the communication cavity 4, an opening 5 provided through the upper surface of the fixing plate 1, a fixing block 6 slidingly connected to the outside of the fixing plate 1, the fixing block 6 being located between the suction cup 3 and the opening 5, the stress removal structure being hingedly connected to the lower surface of the fixing block 6, and the expansion structure passing through the openings 5 of the two fixing plates 1.

[0051] In use, the suction cup 3 on the fixing block 6 is adsorbed on the surface of the metal piece according to the specific welding range and shape of the metal piece, so as to determine the working range of the stress removal structure, and when the fixing block 6 is fixed, the gas in the communication cavity 4 is extracted by the negative pressure extraction structure to generate negative pressure in the communication cavity 4, so as to further improve the adsorption effect of the suction cup 3.

[0052] The expansion structure passes through the openings 5 of the two fixing plates 1, and the expansion structure is used to press the stress removal structure, so as to improve the stability of the stress removal structure.

[0053] In order to improve the convenience and use effect of stress removal, as shown in Figure 2 , Figure 3 , Figure 4 , Figure 9 , Figure 10 The application also includes a stress removal structure including a plurality of groups of support plates 7 distributed from top to bottom, adjacent two groups of support plates 7 being connected by a detachable hinge 8, the support plates 7 being hingedly connected to the fixing plates 1 by the detachable hinge 8, and the middle part of the support plates 7 being fixedly connected to an ultrasonic impact gun 9.

[0054] In use, a proper number of support plates 7 are installed according to the size of the metal piece, so as to facilitate the adjustment of the use amount of the support plates 7 according to the actual use condition.

[0055] Meanwhile, the support plate 7 and the fixed plate 1 are also hinged through the detachable hinge 8, so that the fixed plate 1 and the support plate 7 can be wrapped or adsorbed to the metal piece of different shapes, thereby improving the convenience and use effect of stress removal.

[0056] When the expansion structure is expanded, the extrusion support plate 7 moves, and when the support plate 7 moves, the fixed block 6 moves synchronously, and when the fixed block 6 moves to a certain position, the ultrasonic impact gun 9 is in extrusion contact with the surface of the metal piece, and at the same time, the ultrasonic impact gun 9 removes the stress from the metal piece.

[0057] In order to improve the stability of the ultrasonic impact gun 9 and the surface of the metal piece, as shown in Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 indicated, the application also includes that the expansion structure includes a flexible plate 10, one side of the flexible plate 10 close to the stress removal structure is provided with an expansion pad 11, one side of the expansion pad 11 is in contact with the support plate 7, the upper and lower ends of the flexible plate 10 and the expansion pad 11 pass through the opening 5 respectively, the fixed plate 1 is provided with an extrusion inflation structure, and the extrusion inflation structure is used to drive the expansion pad 11 to expand.

[0058] In use, the upper and lower ends of the flexible plate 10 and the expansion pad 11 pass through the opening 5 respectively, and the flexible plate 10 ensures that the expansion pad 11 can extrude to the side of the stress removal structure during expansion;

[0059] The extrusion inflation structure drives the expansion pad 11 to expand, and when the expansion pad 11 expands, the extrusion support plate 7 moves, and when the support plate 7 moves, the ultrasonic impact gun 9 moves synchronously, and the stability of the ultrasonic impact gun 9 and the surface of the metal piece is improved, thereby improving the use effect.

[0060] In order to improve the stability of the ultrasonic impact gun 9, as shown in Figure 1 、 Figure 2 、 Figure 3 indicated, the application also includes that the flexible plate 10 and the expansion pad 11 are provided with a plurality of groups of through openings 12, the through openings 12 correspond to a plurality of groups of ultrasonic impact guns 9, and a plurality of groups of the ultrasonic impact guns 9 are located in the through openings 12 respectively.

[0061] In use, one end of a plurality of groups of the ultrasonic impact guns 9 passes through the opening 5 on the corresponding flexible plate 10 and expansion pad 11 respectively, so as to improve the stability of the ultrasonic impact gun 9, and facilitate the expansion pad 11 to better extrude the support plate 7 to move when expanding, thereby improving the use effect of the ultrasonic impact gun 9.

[0062] In order to further improve the adsorption effect of the suction cup 3, as shown in Figure 5 、 Figure 6 、 Figure 7 The application also includes that the negative pressure extraction structure includes a first piston cavity 13 arranged inside the fixed plate 1 and a second piston cavity 14 arranged on the side of the first piston cavity 13 away from the suction cup 3, a sliding hole 15 is in communication between the first piston cavity 13 and the second piston cavity 14, a first piston plate 16 is sealingly and slidably connected in the first piston cavity 13, a second piston plate 17 is sealingly and slidably connected in the second piston cavity 14, and a piston rod 18 is fixedly connected between the first piston plate 16 and the second piston plate 17, and the piston rod 18 passes through the sliding hole 15 and is sealingly and slidably connected with the sliding hole 15.

[0063] A first air inlet hole 19 is arranged on the lower surface of the fixed block 6, the first air inlet hole 19 is in communication with the inside of the end of the first piston cavity 13 away from the second piston cavity 14, a communication valve 20 and a second air inlet hole 21 are arranged on the upper surface of the fixed plate 1, the communication valve 20 is in communication with the inside of the communication cavity 4, and the second air inlet hole 21 is in communication with the side of the second piston cavity 14 close to the first piston cavity 13, and the second air inlet hole 21 is in communication with the communication valve 20 through a pipeline.

[0064] In use, the first air inlet hole 19 is connected with a gas source, gas enters the first piston cavity 13 through the first air inlet hole 19 and drives the first piston plate 16 to move, when the first piston plate 16 moves, the piston rod 18 is synchronously moved, and the second piston plate 17 in the second piston cavity 14 is moved, when the second piston plate 17 moves, a suction force is generated, and the gas in the communication cavity 4 is extracted by the action of the second air inlet hole 21 and the communication valve 20, so that the negative pressure is generated in the suction cup 3, and the adsorption effect of the suction cup 3 is improved.

[0065] In order to improve the stability of the flexible plate 10 and the expansion pad 11, as shown in Figure 6 、 Figure 7 、 Figure 8 The application also includes that the end of the second piston cavity 14 away from the piston rod 18 is in communication with the opening 5 of the fixed plate 1, a connecting rod 22 is fixedly connected on the side of the second piston plate 17 away from the piston rod 18, one end of the connecting rod 22 is fixedly connected with a pressing plate 23, a pressing groove 24 corresponding to the pressing plate 23 is arranged in the opening 5 of the fixed plate 1, and the pressing plate 23 is in pressing contact with the side of the expansion pad 11 away from the flexible plate 10.

[0066] In use, when the first piston plate 16 moves synchronously with the second piston plate 17 through the piston rod 18, the second piston plate 17 drives the connecting rod 22 to move, and when the connecting rod 22 moves, the extrusion plate 23 moves synchronously, and when the extrusion plate 23 moves, it is in extrusion contact with one side of the expansion pad 11, and when the extrusion plate 23 moves to a certain position, the expansion pad 11 and the flexible plate 10 are extruded into the extrusion groove 24, so as to fix the flexible plate 10 and the expansion pad 11, prevent the expansion pad 11 from moving during expansion, and improve the expansion effect of the expansion pad 11.

[0067] In order to facilitate the expansion of the expansion pad 11, as shown in Figure 6 、 Figure 7 、 Figure 8 The upper surface of the fixed plate 1 is provided with a pressure relief valve 25, the pressure relief valve 25 is in communication with the inside of the end of the first piston cavity 13 away from the second piston cavity 14, one side of the flexible plate 10 is provided with an air inlet nozzle 26 in communication with the expansion pad 11, and the pressure relief valve 25 is in communication with the air inlet nozzle 26 through a pipeline.

[0068] In use, when the first piston plate 16 moves to a certain position, the connecting rod 22 drives the extrusion plate 23 to extrude into the extrusion groove 24, so as to extrude and fix the flexible plate 10 and the expansion pad 11, and at this time the first piston plate 16 cannot continue to move;

[0069] When the gas source continues to enter the first piston cavity 13 through the first air inlet hole 19, at this time, the gas in the first piston cavity 13 enters the expansion pad 11 through the pipeline and the air inlet nozzle 26 under the action of the pressure relief valve 25, so that the expansion pad 11 expands, and when the expansion pad 11 extrudes the support plate 7 during expansion, the support plate 7 drives the fixed block 6 to slide on the fixed plate 1, and in turn drives the ultrasonic impact gun 9 to extrude the surface of the metal part, so as to facilitate the elimination of stress generated during welding of the welded metal part.

[0070] In order to further improve the adsorption of the suction cup 3, as shown in Figure 5 、 Figure 6 The two groups of suction cups 3 are fixedly connected with magnets 27 inside, the middle part of the magnet 27 is provided with a through hole 28, and the through hole 28 is in communication with the inside of the communication pipe 2.

[0071] In use, the magnet 27 is adsorbed on the surface of the metal piece, the stability of the fixed plate 1 can be improved; meanwhile, the through hole 28 is used to make the suction cup 3 communicate with the communication cavity 4 through the through hole 28 and the communication pipe 2, so that the suction force is generated when the second piston plate 17 moves, and the gas in the communication cavity 4 is extracted through the second air inlet hole 21 and the communication valve 20, so that the negative pressure is generated in the suction cup 3, and the adsorption of the suction cup 3 is further improved.

[0072] In use, the appropriate number of support plates 7 are installed according to the size and shape of the metal piece, the support plates 7 are hinged through the detachable hinges 8, a plurality of groups of support plates 7 can be installed, and the support plates 7 are also hinged through the detachable hinges 8 between the fixed plate 1, so that the stress of the metal piece can be removed subsequently;

[0073] The upper and lower ends of the flexible plate 10 and the expansion pad 11 pass through the opening 5 respectively, and the flexible plate 10 is used to ensure that the expansion pad 11 can be extruded to the stress removal structure side during expansion;

[0074] The suction cups 3 on the two groups of fixed blocks 6 are adsorbed on the surface of the metal piece, so that the working range of the ultrasonic impact gun 9 is determined, and the stability of the fixed plate 1 can be further improved by the magnet 27 adsorbed on the surface of the metal piece;

[0075] The first air inlet hole 19 is connected to the gas source, the gas enters the first piston cavity 13 through the first air inlet hole 19 and drives the first piston plate 16 to move, when the first piston plate 16 moves, the piston rod 18 moves synchronously, and the second piston plate 17 in the second piston cavity 14 moves, when the second piston plate 17 moves, the suction force is generated, the gas in the communication cavity 4 is extracted through the second air inlet hole 21 and the communication valve 20, so that the negative pressure is generated in the suction cup 3, and the adsorption effect of the suction cup 3 is improved;

[0076] When the first piston plate 16 drives the second piston plate 17 to move synchronously through the piston rod 18, the second piston plate 17 drives the connecting rod 22 to move, when the connecting rod 22 moves, the extrusion plate 23 moves synchronously, the extrusion plate 23 extrudes and contacts one side of the expansion pad 11 during movement, and when the extrusion plate 23 moves to a certain position, the expansion pad 11 and the flexible plate 10 are extruded into the extrusion groove 24, so that the flexible plate 10 and the expansion pad 11 are fixed, displacement of the expansion pad 11 during expansion is prevented, and the expansion effect of the expansion pad 11 is improved;

[0077] When the first piston plate 16 moves to a certain position, the extrusion plate 23 extrudes and fixes the flexible plate 10 and the expansion pad 11, and at this time, the first piston plate 16 cannot continue to move;

[0078] When the gas source continues to enter into the first piston cavity 13 through the first gas inlet hole 19, the gas in the first piston cavity 13 enters into the expansion pad 11 through the pipeline and the gas inlet nozzle 26 by the action of the pressure relief valve 25, so that the expansion pad 11 is expanded. When the expansion pad 11 extrudes the support plate 7 in the expansion process, the support plate 7 drives the fixed block 6 to slide on the fixed plate 1, and in this way, the ultrasonic impact gun 9 extrudes the surface of the metal piece, which is convenient for eliminating the stress generated by welding on the metal piece after welding, so as to facilitate the stress elimination on the metal pieces of different shapes, improve the use convenience, and improve the use effect.

[0079] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. Ultrasonic stress control test device for metal welding and machining residual stress, characterized by: It comprises two groups of fixed structures, a stress relief structure is hinged between the two groups of fixed structures, an expansion structure is detachably connected between the two groups of fixed structures, the expansion structure corresponds to the stress relief structure, and the expansion structure is used to squeeze the stress relief structure to move; The two groups of fixed structures each comprise a fixed plate (1), one side of the fixed plate (1) is fixedly connected to at least one group of communicating tubes (2), one end of the communicating tubes (2) away from the fixed plate (1) is connected to a suction cup (3), a communicating cavity (4) is provided inside the side of the fixed plate (1) close to the communicating tube (2), the communicating tube (2) is communicated with the inside of the communicating cavity (4), a negative pressure extraction structure is provided inside the fixed plate (1), the negative pressure extraction structure is communicated with the communicating cavity (4), an opening (5) is provided through the upper surface of the fixed plate (1), a fixed block (6) is slidably connected to the outer side of the fixed plate (1), the fixed block (6) is located between the suction cup (3) and the opening (5), the stress removal structure is hinged to the lower surface of the fixed block (6), and the expansion structure passes through the openings (5) of the two groups of fixed plates (1); The stress removal structure comprises a plurality of groups of support plates (7) distributed from top to bottom, two adjacent groups of support plates (7) are connected via a detachable hinge (8), the support plates (7) are hinged to the fixed plate (1) via a detachable hinge (8), and an ultrasonic impact gun (9) is fixedly connected to the middle of the support plates (7); The two groups of suction cups (3) are both fixedly connected with magnets (27). A through hole (28) is provided in the middle of the magnets (27). The through hole (28) is communicated with the inside of the connecting pipe (2).

2. The ultrasonic stress control test device for metal welding and machining residual stress according to claim 1, characterized in that: The expansion structure comprises a flexible plate (10), an expansion pad (11) is provided on a side of the flexible plate (10) close to the stress removal structure, one side of the expansion pad (11) is in contact with a support plate (7), upper and lower ends of the flexible plate (10) and the expansion pad (11) respectively pass through openings (5), and an extrusion inflation structure is provided in the fixed plate (1), and the extrusion inflation structure is used to drive the expansion pad (11) to expand.

3. The ultrasonic stress control test device for metal welding and machining residual stress according to claim 2, characterized in that: Several groups of openings (12) are provided on the outside of the flexible plate (10) and the expansion pad (11), and the openings (12) correspond to several groups of ultrasonic impact guns (9). The several groups of ultrasonic impact guns (9) are respectively located in the openings (12).

4. The ultrasonic stress control test device for metal welding and machining residual stress according to claim 3, characterized in that: The negative pressure extraction structure comprises a first piston chamber (13) arranged inside the fixed plate (1) and a second piston chamber (14) arranged on the side of the first piston chamber (13) away from the suction cup (3); a sliding hole (15) is connected between the first piston chamber (13) and the second piston chamber (14); a first piston plate (16) is sealingly and slidingly connected in the first piston chamber (13); a second piston plate (17) is sealingly and slidingly connected in the second piston chamber (14); a piston rod (18) is fixedly connected between the first piston plate (16) and the second piston plate (17); the piston rod (18) passes through the sliding hole (15) and is sealingly and slidingly connected to the sliding hole (15); The lower surface of the fixed block (6) is provided with a first air inlet hole (19), and the first air inlet hole (19) is connected to the interior of the first piston chamber (13) away from the second piston chamber (14). The upper surface of the fixed plate (1) is provided with a connecting valve (20) and a second air inlet hole (21), the connecting valve (20) is connected to the interior of the connecting chamber (4), the second air inlet hole (21) is connected to the side of the second piston chamber (14) close to the first piston chamber (13), and the second air inlet hole (21) is connected to the connecting valve (20) through a pipeline.

5. The ultrasonic stress control test device for metal welding and machining residual stress according to claim 4, characterized in that: The end of the second piston chamber (14) away from the piston rod (18) is communicated with the opening (5) of the fixed plate (1); the side of the second piston plate (17) away from the piston rod (18) is fixedly connected to a connecting rod (22); one end of the connecting rod (22) is fixedly connected to an extrusion plate (23); an extrusion groove (24) corresponding to the extrusion plate (23) is provided in the opening (5) of the fixed plate (1); the extrusion plate (23) is in extrusion contact with the side of the expansion pad (11) away from the flexible plate (10).

6. The ultrasonic stress control test device for metal welding and machining residual stress according to claim 5, characterized in that: A pressure relief valve (25) is provided on the upper surface of the fixed plate (1), and the pressure relief valve (25) is communicated with the interior of one end of the first piston chamber (13) away from the second piston chamber (14). An air inlet nozzle (26) communicated with the expansion pad (11) is installed on one side of the flexible plate (10), and the pressure relief valve (25) is communicated with the air inlet nozzle (26) through a pipeline.

Images