A mechanical properties testing device for welded metal parts of suspended magnetic levitation vehicles

Abstract

The present invention discloses a mechanical property testing device for welded metal parts of a suspended magnetic levitation vehicle, and specifically relates to the technical field of metal part testing, comprising a workbench, wherein a distance-adjusting component is provided in the middle of the workbench, and two symmetrically distributed knob components are fixedly installed on the top of the distance-adjusting component, and a telescopic component is provided between the two knob components, and a positioning component is provided in each of the knob components. The present invention, by providing a positioning component in conjunction with the distance-adjusting component and an upper pressure component, performs rolling positioning on the two ends of welded metal parts of different lengths, improves the stability of the two ends of the metal parts, and thus improves the effect of automatic bending detection of the metal parts; by providing the knob component and using the telescopic component in conjunction, the positioning component can be driven to rotate, and the positioned metal parts can be driven to rotate, so as to change the bending angle of the metal parts, thereby facilitating bending detection of the metal parts at different angles, and effectively improving the detection effect of the metal parts.

Description

Technical Field

[0001] The invention relates to the technical field of metal parts detection, in particular to a mechanical property detection device for welded metal parts of a suspended magnetic levitation vehicle. Background Art

[0002] A maglev vehicle is a passenger vehicle that uses magnetic force to suspend the vehicle body on the guide rail during operation. It usually uses a linear motor as a power source and uses the induction principle to propel the vehicle forward. The vehicle has a lateral positioning guide device. During the manufacturing process of a maglev vehicle, some metal parts need to be welded. In order to ensure the strength of the metal parts after welding, the mechanical properties of the welded metal parts need to be tested.

[0003] The traditional inspection process of welded metal parts is mostly to weld the metal parts, and then manually transport multiple welded metal parts to the inspection station for a series of mechanical property tests. The inspection is troublesome and greatly affects the overall inspection effect of the welded metal parts. Therefore, we propose a mechanical property inspection equipment for suspended magnetic levitation vehicle welded metal parts to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a mechanical properties testing device for welded metal parts of a suspended magnetic levitation vehicle to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mechanical properties testing device for welding metal parts of a suspended magnetic levitation vehicle, comprising a workbench, a distance adjusting component is provided in the middle of the workbench, two symmetrically distributed knob components are fixedly installed on the top of the distance adjusting component, a telescopic component is provided between the two knob components, positioning components are provided in the knob components, a feeding component is fixedly installed on the top of the workbench, and an upper pressure component is provided in the middle of the top of the distance adjusting component.

[0006] As a preferred technical solution of the present invention, the pitch-adjustable component includes a pitch-adjustable bottom frame, which is fixedly clamped in the middle of the workbench, and the top of the pitch-adjustable bottom frame is provided with two groups of symmetrically distributed slide grooves, and the slide grooves in the same group are slidingly clamped with symmetrically distributed slide seats, and the top of the slide seat is fixedly installed with a mounting seat, and the bottom of the slide seat is fixedly clamped with an inner screw tube, and the inner screw tubes in the same group are threadedly inserted with a double-headed screw, and the double-headed screw is rotatably installed in the corresponding slide groove, and the ends of the double-headed screw are fixedly installed with connecting shafts, and the connecting shaft is rotatably clamped on the pitch-adjustable bottom frame, and the ends of the connecting shaft are fixedly sleeved with pulleys, and the outer movable sleeves of the two pulleys are provided with transmission belts.

[0007] As a preferred technical solution of the present invention, a first motor is fixedly mounted on an outer wall of one side of the adjustable base frame close to the connecting shaft, and a driving end of the first motor is coaxially fixedly mounted with an end of one of the connecting shafts.

[0008] As a preferred technical solution of the present invention, the knob assembly includes a knob outer frame, which has an annular structure and is fixedly installed on the top of the mounting seat on the same side of the two groups. The top of the knob outer frame is integrally formed with a knob top frame, and the middle part of the knob outer frame is provided with an inner ring frame, and the outer wall fixing sleeve of the inner ring frame is provided with a snap ring, and the snap ring is rotatably clamped in the knob outer frame, and the outer wall fixing sleeve of the snap ring is provided with a gear ring, and a knob shaft is rotatably installed in the knob top frame, and the middle fixed sleeve of the knob shaft is provided with a first gear, and the first gear is meshingly connected with the outer side of the gear ring.

[0009] As a preferred technical solution of the present invention, a second motor is fixedly mounted on the outer wall of the rotary top frame, and a driving end of the second motor and an end of the rotary shaft are coaxially fixedly mounted.

[0010] As a preferred technical solution of the present invention, the telescopic assembly includes a first auxiliary shaft and a second auxiliary shaft, the first auxiliary shaft is fixedly mounted on the end of one of the knob shafts, the second auxiliary shaft is fixedly mounted on the end of the other knob shaft, a telescopic column is integrally formed on the side of the first auxiliary shaft close to the second auxiliary shaft, a telescopic groove corresponding to the telescopic column is provided on the side of the second auxiliary shaft close to the first auxiliary shaft, and the telescopic column is slidably engaged in the corresponding telescopic groove.

[0011] As a preferred technical solution of the present invention, the positioning assembly includes a positioning outer frame, the positioning outer frame is fixedly clamped on the inner side of the inner ring frame, the inner side of the positioning outer frame is fixedly clamped with two symmetrically distributed guide pillars, the outer side of the guide pillars is movably sleeved with a positioning frame symmetrically distributed up and down, springs are provided on the outer sides of the guide pillars at opposite ends of the two positioning frames, the springs are fixedly installed on the corresponding outer walls of the positioning frames, the springs are fixedly installed on the inner side of the positioning outer frame, the outer wall of the positioning outer frame is rotatably installed with two positioning shafts symmetrically distributed up and down, the ends of the positioning shafts extend into the positioning outer frame and are fixedly installed with cams, the opposite sides of the positioning frame are provided with wheel grooves corresponding to the cams, and the cams are movably clamped in the corresponding wheel grooves, the ends of the positioning shafts away from the cams are fixedly installed with second gears, the middle part of the outer wall of the positioning outer frame is rotatably installed with a third auxiliary shaft, the outer side of the third auxiliary shaft is fixedly installed with a third gear, the third gear is meshingly connected between the two second gears, and positioning rollers are rotatably installed on the opposite sides of the two positioning frames.

[0012] As a preferred technical solution of the present invention, a driven worm gear is fixedly installed on the end of the third auxiliary shaft, and a driving worm is meshingly connected to the top of the driven worm gear. The driving worm is rotatably installed on the outer wall of the positioning outer frame, and a third motor is fixedly installed on the outer side of the positioning outer frame. The third motor and the driving worm are coaxially fixedly installed.

[0013] As a preferred technical solution of the present invention, the feed assembly includes two groups of symmetrically distributed feed brackets and two symmetrically distributed stabilizing frames, the feed brackets are fixedly installed on the top of the workbench, and feed rollers are rotatably installed on the top of the feed brackets in the same group, a fourth motor is fixedly installed on the upper end of one of the feed brackets, and the driving end of the fourth motor and the end of the corresponding feed roller are coaxially fixedly installed, two feed belts are movablely sleeved on the outer sides of the two feed rollers, and the two stabilizing frames are located on the outer sides of the two feed belts, and a plurality of evenly distributed storage slots are opened on the top of the stabilizing frames, and lifting rods are fixedly installed on the bottom ends of the stabilizing frames, and the lifting rods are fixedly installed on the top of the workbench.

[0014] As a preferred technical solution of the present invention, the upper pressure assembly includes a lifting cylinder, which is fixedly installed in the middle of the top end of the adjustable distance bottom frame, a sleeve is fixedly installed at the driving end of the lifting cylinder, a pressure seat is fixedly installed at the top end of the sleeve, and the pressure seat is located between the two conveyor belts.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting the positioning component in conjunction with the distance adjustment component and the upper pressure component, the two ends of the welded metal parts of different lengths are rolled and positioned to improve the stability of the two ends of the metal parts, so as to improve the effect of automatic bending detection of metal parts;

[0017] 2. By setting a rotary knob component and using a telescopic component in combination, the positioning component can be driven to rotate, and the positioned metal part can be driven to rotate to change the bending angle of the metal part, thereby facilitating the bending detection of the metal part at different angles, and effectively improving the detection effect of the metal part;

[0018] 3. By setting up a feeding component, multiple metal parts to be tested can be automatically transported gradually between two positioning components, thereby facilitating automatic bending testing of multiple metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the structural connection of the distance adjustment assembly and the upper pressure assembly in an embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the twist assembly in an embodiment of the present invention;

[0022] Figure 4 It is a structural schematic diagram of a telescopic assembly in an embodiment of the present invention;

[0023] Figure 5 It is a structural schematic diagram of a positioning component in an embodiment of the present invention;

[0024] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0025] Figure 7 A schematic diagram of the structural connection between the positioning frame and the positioning roller in an embodiment of the present invention;

[0026] Figure 8 Schematic diagram of the structure of the feeding assembly in an embodiment of the present invention.

[0027] In the figure: 1. workbench; 2. pitch adjustment component; 3. twisting component; 4. telescopic component; 5. positioning component; 6. feeding component; 7. upper pressure component; 8. first motor; 21. pitch adjustment bottom frame; 211. slideway; 22. slide seat; 221. inner screw tube; 23. double-headed screw; 24. connecting shaft; 25. pulley; 251. transmission belt; 26. mounting seat; 31. twisting outer frame; 32. twisting top frame; 33. inner ring frame; 34. snap ring; 35. gear ring; 351. first gear; 36. twisting shaft; 37. second motor; 41. first auxiliary shaft; 42. second Auxiliary shaft; 43. Telescopic column; 421. Telescopic slot; 51. Positioning outer frame; 52. Guide column; 521. Spring; 53. Positioning frame; 531. Wheel slot; 54. Cam; 541. Positioning shaft; 55. Second gear; 551. Third gear; 56. Third auxiliary shaft; 57. Driven worm gear; 571. Driving worm; 572. Third motor; 58. Positioning roller; 61. Feeding bracket; 62. Stabilizing frame; 621. Storage slot; 63. Feeding roller; 64. Feeding belt; 65. Fourth motor; 66. Lifting rod; 71. Lifting cylinder; 72. Sleeve seat; 73. Press seat. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example: Figures 1 to 8As shown, this embodiment provides a mechanical properties testing device for welding metal parts of a suspended magnetic levitation vehicle, including a workbench 1, a distance adjusting component 2 is provided in the middle of the workbench 1, two symmetrically distributed knob components 3 are fixedly installed on the top of the distance adjusting component 2, a telescopic component 4 is provided between the two knob components 3, and a positioning component 5 is provided in the knob components 3. A feeding component 6 is fixedly installed on the top of the workbench 1, and an upper pressing component 7 is provided in the middle of the top of the distance adjusting component 2.

[0030] The pitch-adjusting assembly 2 comprises a pitch-adjusting bottom frame 21, which is fixedly connected to the middle of the workbench 1. Two groups of symmetrically distributed slide grooves 211 are provided at the top of the pitch-adjusting bottom frame 21. The same group of slide grooves 211 are slidably connected to slide seats 22, and the top of the slide seats 22 is fixedly installed with a mounting seat 26. The bottom of the slide seats 22 is fixedly connected to an inner screw tube 221, and the inner screw tubes 221 of the same group are threadedly inserted with a double-headed screw 23. The double-headed screw 23 is rotatably installed in the corresponding slide groove 211. The ends of the double-headed screw 23 are fixedly installed with a connecting shaft 24, which is rotatably connected to the pitch-adjusting bottom frame 21. The ends of the connecting shaft 24 are fixedly sleeved with There are pulleys 25, and the outer movable sleeves of the two pulleys 25 are provided with transmission belts 251; a first motor 8 is fixedly installed on the outer wall of one side of the adjustable base frame 21 close to the connecting shaft 24, and the driving end of the first motor 8 and the end of one of the connecting shafts 24 are coaxially fixedly installed. When in use, the first motor 8 is controlled and turned on to drive one of the connecting shafts 24 to rotate, and the two pulleys 25 and the transmission belt 251 are used in conjunction with each other to drive the other connecting shaft 24 to rotate synchronously, thereby synchronously driving the two double-headed screws 23 to rotate, and the inner screw tube 221 is used in conjunction with each other to synchronously drive the sliding seat 22 in the same group to move toward each other, thereby driving the mounting seats 26 on both sides to move toward each other.

[0031] The knob assembly 3 includes a knob outer frame 31, which is an annular structure. The knob outer frame 31 is fixedly mounted on the top of the mounting seat 26 on the same side of the two groups. The mounting seats 26 on both sides move toward each other, driving the knob assemblies 3 on both sides to move toward each other, and adjusting the spacing between the knob assemblies 3 on both sides. The top of the knob outer frame 31 is integrally formed with a knob top frame 32, and the middle of the knob outer frame 31 is provided with an inner ring frame 33. The outer wall of the inner ring frame 33 is fixedly sleeved with a snap ring 34, which is rotatably clamped in the knob outer frame 31. The outer wall of the snap ring 34 A fixed sleeve is provided with a gear ring 35, a knob shaft 36 is rotatably installed in the knob top frame 32, a second motor 37 is fixedly installed on the outer wall of the knob top frame 32, and the driving end of the second motor 37 and the end of the knob shaft 36 are coaxially fixedly installed; a middle fixed sleeve of the knob shaft 36 is provided with a first gear 351, and the first gear 351 is meshingly connected with the outer side of the gear ring 35. When in use, the second motor 37 is turned on to drive the knob shaft 36 and the first gear 351 to rotate, drive the gear ring 35 and the retaining ring 34 to rotate, thereby driving the inner ring frame 33 to rotate.

[0032] The telescopic assembly 4 includes a first auxiliary shaft 41 and a second auxiliary shaft 42. The first auxiliary shaft 41 is fixedly mounted on the end of one of the knob shafts 36, and the second auxiliary shaft 42 is fixedly mounted on the end of the other knob shaft 36. A telescopic column 43 is integrally formed on the side of the first auxiliary shaft 41 close to the second auxiliary shaft 42. A telescopic groove 421 corresponding to the telescopic column 43 is provided on the side of the second auxiliary shaft 42 close to the first auxiliary shaft 41, and the telescopic column 43 is slidably engaged in the corresponding telescopic groove 421. By providing the telescopic column 43 and the telescopic column 43 being slidably engaged in the corresponding telescopic groove 421, a telescopic connection of the knob shafts 36 between the knob assemblies 3 on both sides is performed, so that by driving one of the knob shafts 36 to rotate, the other knob shaft 36 can be driven to rotate synchronously.

[0033] The positioning assembly 5 includes a positioning outer frame 51, which is fixedly connected to the inner side of the inner ring frame 33. The rotation of the inner ring frame 33 drives the positioning assembly 5 to rotate. The inner side of the positioning outer frame 51 is fixedly provided with two symmetrically distributed guide pillars 52. The outer side of the guide pillars 52 is movably sleeved with positioning frames 53 symmetrically distributed up and down. The outer sides of the guide pillars 52 at the opposite ends of the two positioning frames 53 are provided with springs 521. The springs 521 are fixedly installed with the corresponding outer walls of the positioning frames 53. The springs 521 are fixedly installed with the inner side of the positioning outer frame 51. The outer wall of the positioning outer frame 51 is rotatably installed with two positioning shafts 541 symmetrically distributed up and down. The end of the positioning shaft 541 extends into the positioning outer frame 51 and is fixedly installed with a cam 54. The opposite sides of the positioning frame 53 are provided with and The cam 54 corresponds to the wheel groove 531, and the cam 54 is movably engaged in the corresponding wheel groove 531. The second gear 55 is fixedly installed on the end of the positioning shaft 541 away from the cam 54. The third auxiliary shaft 56 is rotatably installed in the middle of the outer wall of the positioning outer frame 51; the end of the third auxiliary shaft 56 is fixedly installed with a driven worm gear 57, and the top of the driven worm gear 57 is meshingly connected with a driving worm 571, and the driving worm 571 is rotatably installed on the outer wall of the positioning outer frame 51. A third motor 572 is fixedly installed on the outer side of the positioning outer frame 51. The third motor 572 and the driving worm 571 are coaxially fixedly installed. By controlling and starting the third motor 572, the driving worm 571 is driven to rotate, thereby driving the driven worm gear 57 and the third auxiliary shaft 56 to rotate.

[0034] A third gear 551 is fixedly installed on the outer side of the third auxiliary shaft 56, and the third gear 551 is meshed and connected between the two second gears 55. The third auxiliary shaft 56 rotates to drive the third gear 551 to drive the two second gears 55 to rotate synchronously, thereby driving the two positioning shafts 541 and the cam 54 to rotate. The cam 54 is movably engaged in the corresponding wheel groove 531, driving the two positioning frames 53 to move toward each other. Positioning rollers 58 are rotatably installed on the opposite sides of the two positioning frames 53. When in use, the two ends of the welded metal part are respectively placed between the two positioning rollers 58 in the positioning components 5 on both sides. Through the relative movement of the two positioning frames 53, the two positioning rollers 58 are driven to move toward each other to perform rolling positioning on the two ends of the metal part, thereby improving the stability of the two ends of the metal part, so as to improve the subsequent metal part detection effect.

[0035] The feeding assembly 6 includes two symmetrically distributed groups of feeding brackets 61 and two symmetrically distributed stabilizing frames 62. The feeding brackets 61 are fixedly installed on the top of the workbench 1. The tops of the same group of feeding brackets 61 are all rotatably installed with feeding rollers 63. A fourth motor 65 is fixedly installed on the upper end of one of the feeding brackets 61. The driving end of the fourth motor 65 and the end of the corresponding feeding roller 63 are coaxially fixedly installed. Two feeding belts 64 are arranged on the outer movable sleeves of the two feeding rollers 63. When in use, the fourth motor 65 is turned on to drive the feeding rollers 63 to rotate, driving the two feeding belts 64 to transmit. The two stabilizing frames 62 are located on the outer sides of the two feeding belts 64. A plurality of evenly distributed storage slots 621 are provided at the top, and a lifting rod 66 is fixedly installed at the bottom end of the stabilizing frame 62. The lifting rod 66 is fixedly installed at the top of the workbench 1. When in use, a plurality of metal parts to be inspected are placed in the storage slots 621 placed at the end in sequence, and then the lifting rod 66 is opened to drive the two stabilizing frames 62 to descend. At this time, the metal parts are in contact with the conveyor belt 64 and gradually separate from the storage slot 621. Then, the metal parts are transported to the next storage slot 621 through the transmission of the conveyor belt 64. In this way, the plurality of metal parts to be inspected are gradually and automatically transported between the two positioning components 5, so as to facilitate the inspection of the plurality of metal parts.

[0036] The upper pressure assembly 7 includes a lifting cylinder 71, which is fixedly installed in the middle of the top of the adjustable distance bottom frame 21. A sleeve 72 is fixedly installed on the driving end of the lifting cylinder 71, and a pressure seat 73 is fixedly installed on the top of the sleeve 72. The pressure seat 73 is located between the two conveyor belts 64. When in use, the lifting cylinder 71 is turned on to drive the sleeve 72 and the pressure seat 73 to move upward and contact the positioned metal parts, and gradually press the metal parts to perform automatic bending detection on the metal parts.

[0037] Working principle: When in use, multiple metal parts to be inspected are placed in the storage slots 621 placed at the end in sequence, and then the lifting rod 66 is opened to drive the two stabilizing frames 62 to descend. At this time, the metal parts are in contact with the conveyor belt 64 and gradually separate from the storage slots 621. Then, the metal parts are transported to the next storage slot 621 through the transmission of the conveyor belt 64. In this way, multiple metal parts to be inspected are gradually and automatically transported between the two positioning components 5.

[0038] When the metal piece is transported between the two positioning assemblies 5, the feeding belt 64 is stopped, and the first motor 8 is controlled and turned on to drive one of the connecting shafts 24 to rotate. The two pulleys 25 and the transmission belt 251 are used to drive the other connecting shaft 24 to rotate synchronously, thereby synchronously driving the two double-headed screws 23 to rotate. The inner screw tube 221 is used to synchronously drive the slide seat 22 in the same group to move toward each other, thereby driving the mounting seats 26 on both sides to move toward each other, and driving the torsion assemblies 3 and the positioning assemblies 5 on both sides to move toward each other. At the same time, the telescopic column 43 slides in the corresponding telescopic groove 421 until the two ends of the metal piece are respectively placed between the two positioning rollers 58 in the positioning assemblies 5 on both sides.

[0039] Subsequently, the third motor 572 is controlled and turned on to drive the driving worm 571 to rotate, thereby driving the driven worm gear 57 and the third auxiliary shaft 56 to rotate, driving the third gear 551 to drive the two second gears 55 to rotate synchronously, and then driving the two positioning shafts 541 and the cam 54 to rotate. The cam 54 is movably engaged in the corresponding wheel groove 531, driving the two positioning frames 53 to move toward each other, and driving the two positioning rollers 58 to move toward each other to perform rolling positioning on the two ends of the metal part.

[0040] Subsequently, the lifting cylinder 71 is turned on to drive the sleeve seat 72 and the pressing seat 73 to move upward, contact the positioned metal part, and gradually press the metal part upward to perform automatic bending detection on the metal part.

[0041] During detection, the second motor 37 can be turned on to drive the knob shaft 36 and the first gear 351 to rotate, and cooperate with the telescopic component 4 to drive the other knob shaft 36 and the first gear 351 to rotate synchronously, drive the corresponding gear ring 35 and the retaining ring 34 to rotate, drive the two inner ring frames 33 to rotate, and drive the positioning component 5 to rotate, so as to drive the positioned metal parts to rotate, so as to change the bending angle of the metal parts, thereby facilitating the bending detection of the metal parts at different angles, and effectively improving the detection effect of the metal parts.

[0042] The above embodiments of the present invention are described in detail through examples, but the contents described are only exemplary embodiments of the embodiments of the present invention and cannot be considered to limit the scope of implementation of the embodiments of the present invention. The protection scope of the embodiments of the present invention is defined by the claims. Anyone who utilizes the technical solutions described in the embodiments of the present invention, or who, inspired by the technical solutions of the embodiments of the present invention, designs similar technical solutions within the essence and protection scope of the embodiments of the present invention to achieve the above technical effects, or who makes equal changes and improvements to the scope of application, shall still fall within the scope of protection covered by the patent of the embodiments of the present invention.

Claims

1. A mechanical properties testing device for welding metal parts of a suspended magnetic levitation vehicle, comprising a workbench (1), characterized in that: A distance adjustment component (2) is provided in the middle of the workbench (1), two symmetrically distributed rotary knob components (3) are fixedly installed at the top of the distance adjustment component (2), a telescopic component (4) is provided between the two rotary knob components (3), and a positioning component (5) is provided in each of the rotary knob components (3). A material feeding component (6) is fixedly installed at the top of the workbench (1), and a pressing component (7) is provided in the middle of the top of the distance adjustment component (2); The distance adjustment component (2) comprises a distance adjustment bottom frame (21), the distance adjustment bottom frame (21) is fixedly connected to the middle part of the working platform (1), the top of the distance adjustment bottom frame (21) is provided with two groups of symmetrically distributed slide grooves (211), the slide grooves (211) of the same group are slidably provided with symmetrically distributed slide seats (22), the top of the slide seats (22) are fixedly provided with mounting seats (26), the bottom of the slide seats (22) are fixedly provided with inner screw tubes (221), and the same group A double-headed screw (23) is threadedly inserted in the inner screw tube (221), and the double-headed screw (23) is rotatably installed in the corresponding slide groove (211). The ends of the double-headed screw (23) are fixedly installed with a connecting shaft (24), and the connecting shaft (24) is rotatably connected to the pitch-adjusting bottom frame (21). The ends of the connecting shaft (24) are fixedly sleeved with pulleys (25), and the outer sides of the two pulleys (25) are movably sleeved with transmission belts (251); The knob assembly (3) comprises a knob outer frame (31), the knob outer frame (31) is annular in structure, the knob outer frame (31) is fixedly mounted on the top of the mounting seat (26) on the same side of the two groups, the top of the knob outer frame (31) is integrally formed with a knob top frame (32), the middle of the knob outer frame (31) is provided with an inner ring frame (33), the outer wall fixing sleeve of the inner ring frame (33) is provided with a snap ring (34), the snap ring (34) is rotatably clamped in the knob outer frame (31), the outer wall fixing sleeve of the snap ring (34) is provided with a gear ring (35), a knob shaft (36) is rotatably mounted in the knob top frame (32), the middle part fixing sleeve of the knob shaft (36) is provided with a first gear (351), the first gear (351) is meshingly connected with the outer side of the gear ring (35); The telescopic assembly (4) comprises a first auxiliary shaft (41) and a second auxiliary shaft (42), wherein the first auxiliary shaft (41) is fixedly mounted on the end of one of the torsion shafts (36), and the second auxiliary shaft (42) is fixedly mounted on the end of the other torsion shaft (36), a telescopic column (43) is integrally formed on a side of the first auxiliary shaft (41) close to the second auxiliary shaft (42), a telescopic groove (421) corresponding to the telescopic column (43) is formed on a side of the second auxiliary shaft (42) close to the first auxiliary shaft (41), and the telescopic column (43) is slidably engaged in the corresponding telescopic groove (421); The positioning assembly (5) comprises a positioning outer frame (51), the positioning outer frame (51) is fixedly connected to the inner side of the inner ring frame (33), the inner side of the positioning outer frame (51) is fixedly provided with two guide pillars (52) distributed symmetrically, the outer side of the guide pillars (52) is movably sleeved with positioning frames (53) distributed symmetrically up and down, the outer sides of the guide pillars (52) at the opposite ends of the two positioning frames (53) are provided with springs (521), the springs (521) are fixedly installed with the outer walls of the corresponding positioning frames (53), the springs (521) are fixedly installed with the inner side of the positioning outer frame (51), the outer wall of the positioning outer frame (51) is rotatably provided with two positioning shafts (541) distributed symmetrically up and down, the positioning shafts (541) are rotatably installed with the outer wall of the positioning outer frame (51), and the positioning shafts (541) are rotatably installed with the outer wall of the positioning outer frame (51). 1) extends into the positioning outer frame (51) and is fixedly mounted with a cam (54); a wheel groove (531) corresponding to the cam (54) is provided on the opposite side of the positioning frame (53), and the cam (54) is movably engaged in the corresponding wheel groove (531); a second gear (55) is fixedly mounted on the end of the positioning shaft (541) away from the cam (54); a third auxiliary shaft (56) is rotatably mounted on the middle part of the outer wall of the positioning outer frame (51); a third gear (551) is fixedly mounted on the outer side of the third auxiliary shaft (56); the third gear (551) is meshed and connected between the two second gears (55); and positioning rollers (58) are rotatably mounted on the opposite sides of the two positioning frames (53).

2. The mechanical properties testing equipment for welding metal parts of a suspended magnetic levitation vehicle according to claim 1 is characterized by: A first motor (8) is fixedly mounted on an outer wall of one side of the adjustable distance bottom frame (21) close to the connecting shaft (24); a driving end of the first motor (8) and an end of one of the connecting shafts (24) are coaxially fixedly mounted.

3. The mechanical properties testing equipment for welding metal parts of a suspended magnetic levitation vehicle according to claim 1 is characterized by: A second motor (37) is fixedly mounted on the outer wall of the twist top frame (32), and a driving end of the second motor (37) and an end of the twist shaft (36) are coaxially fixedly mounted.

4. The mechanical properties testing equipment for welding metal parts of a suspended magnetic levitation vehicle according to claim 1 is characterized by: A driven worm gear (57) is fixedly mounted on the end of the third auxiliary shaft (56); a driving worm gear (571) is meshingly connected to the top of the driven worm gear (57); the driving worm gear (571) is rotatably mounted on the outer wall of the positioning outer frame (51); a third motor (572) is fixedly mounted on the outer side of the positioning outer frame (51); and the third motor (572) and the driving worm gear (571) are coaxially fixedly mounted.

5. The mechanical properties testing equipment for welding metal parts of a suspended magnetic levitation vehicle according to claim 1, characterized in that: The feeding assembly (6) comprises two symmetrically distributed groups of feeding brackets (61) and two symmetrically distributed stabilizing frames (62), wherein the feeding brackets (61) are fixedly mounted on the top of the working platform (1), and feeding rollers (63) are rotatably mounted on the top of the feeding brackets (61) in the same group, wherein a fourth motor (65) is fixedly mounted on the upper end of one of the feeding brackets (61), and the driving end of the fourth motor (65) and the end of the corresponding feeding roller (63) are coaxially fixedly mounted, and two feeding belts (64) are movably sleeved on the outer sides of the two feeding rollers (63), and the two stabilizing frames (62) are located on the outer sides of the two feeding belts (64), and a plurality of evenly distributed storage grooves (621) are opened on the top of the stabilizing frames (62), and a lifting rod (66) is fixedly mounted on the bottom end of the stabilizing frames (62), and the lifting rod (66) is fixedly mounted on the top of the working platform (1).

6. The mechanical properties testing equipment for welding metal parts of a suspended magnetic levitation vehicle according to claim 5, characterized in that: The upper pressure assembly (7) comprises a lifting cylinder, the lifting cylinder is fixedly mounted at the middle of the top end of the distance-adjusting bottom frame (21), a sleeve (72) is fixedly mounted at the driving end of the lifting cylinder, a pressure seat (73) is fixedly mounted at the top end of the sleeve (72), and the pressure seat (73) is located between two conveyor belts (64).

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