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CN-121994873-A - Automobile body structure tie point intensity detection device

CN121994873ACN 121994873 ACN121994873 ACN 121994873ACN-121994873-A

Abstract

The invention belongs to the technical field of vehicle body connection detection, and particularly relates to a device for detecting the strength of a connecting point of a vehicle body structural part, which comprises a box body, wherein a storage battery assembly and a control board are arranged in the box body, a holding rod is arranged at the end part of the box body, a supporting seat is fixedly arranged at one end of the holding rod far away from the box body, the device also comprises two side plates, the two side plates are arranged at one side of the supporting seat far away from the box body, a connecting groove is formed in the side wall of the box body, a magnetic attraction moving assembly is arranged in the connecting groove, and the magnetic attraction moving assembly is used for driving the two side plates to move. The invention can rapidly judge whether the strength of the welding spot is qualified or not by detecting the welding spot resistance, can adapt to the welding spot detection of the bending position and the deformation position of the vehicle body, is beneficial to improving the detection efficiency of the welding spot of the vehicle body, and can reduce the influence of greasy dirt, oxide skin and the like on the detection precision of the welding spot strength.

Inventors

  • LI GUANG
  • ZHANG GENGQIANG
  • TIAN LIPING
  • ZHAO GUIXIN

Assignees

  • 海斯坦普汽车组件(北京)有限公司

Dates

Publication Date
20260508
Application Date
20260309

Claims (8)

  1. 1. The utility model provides an automobile body structure tie point intensity detection device, includes box body (1), the inside of box body (1) is provided with battery pack (2) and control panel (3), grip lever (4) are installed to the tip of box body (1), and grip lever (4) keep away from the one end fixed mounting of box body (1) and have supporting seat (5), its characterized in that still includes: The two side plates (6) are arranged on one side, far away from the box body (1), of the supporting seat (5), a connecting groove (7) is formed in the side wall of the box body (1), a magnetic attraction moving assembly (8) is arranged in the connecting groove (7), and the magnetic attraction moving assembly (8) is used for driving the two side plates (6) to move; The two insulating blocks (9) are arranged between the two side plates (6), the two side plates (6) are fixedly connected with the end parts of the insulating seats on the same side, mounting grooves (10) are commonly formed in the side walls of the two insulating blocks (9) and the side plates (6) on the same side, elastic conductive films (11) are arranged in the two mounting grooves (10), connecting components (12) are arranged in the mounting grooves (10), and the connecting components (12) are used for fixing the elastic conductive films (11) and sealing the notch of the mounting groove (10) on the same side in cooperation with the elastic conductive films (11); a gas generating unit (13) arranged inside the two side plates (6) and used for conveying gas flow to the inside of the two mounting grooves (10); And the cleaning unit (14) is arranged on the side wall of one side plate (6) and is used for cleaning welding points of the vehicle body.
  2. 2. The device for detecting the strength of the connecting point of the automobile body structural part according to claim 1, wherein the magnetic attraction moving assembly (8) comprises a non-magnetic rod (81) fixedly installed inside the connecting groove (7), two side plates (6) are in sliding connection with the rod wall of the non-magnetic rod (81), supporting springs (82) are fixedly arranged between the side walls of the opposite sides of the two side plates (6) and the groove wall of the connecting groove (7), two electromagnetic rings (83) are sleeved on the rod wall of the non-magnetic rod (81), the two electromagnetic rings (83) are fixedly connected with the side walls of the side plates (6) on the same side in an inserting mode, and the two electromagnetic rings (83) are electrically connected with the control board (3).
  3. 3. The device for detecting the strength of the connecting point of the automobile body structural part according to claim 1, wherein the two connecting assemblies (12) comprise conducting rings (121) fixedly installed inside the installation groove (10), the notch of the installation groove (10) is in threaded connection with an insulating sleeve (122), the outer edge of the elastic conducting film (11) is pressed on the side wall of the conducting rings (121) by the end part of the insulating sleeve (122), and the elastic conducting film (11) is electrically connected with the control board (3) through the conducting rings (121).
  4. 4. The device for detecting the strength of the connecting point of the automobile body structural part according to claim 1, wherein the gas generating unit (13) comprises an air cavity (131) formed in the inner parts of two side plates (6), two air cavities (131) are slidably connected with pistons (132), side walls on opposite sides of the two pistons (132) are fixedly connected with T-shaped sliding rods (133), the two T-shaped sliding rods (133) are slidably connected with the cavity walls of the same-side air cavity (131), the end parts of the two T-shaped sliding rods (133) are abutted against, return springs (134) are fixedly arranged between the side walls on opposite sides of the two pistons (132) and the same-side air cavity (131), air inlet holes (135) and air outlet holes (136) are formed in the cavity walls of the two air cavities (131), one-way valves (137) are mounted in the inner parts of the two air inlet holes (135) and the two air outlet holes (136), the inner parts of the two air outlet holes (136) are communicated with the inner parts of the same-side mounting grooves (10), and the air pressure valves (138) are formed in the inner parts of the two air outlet holes (139).
  5. 5. The device for detecting the strength of the connection point of the structural member of the automobile body according to claim 4, wherein the cleaning unit (14) comprises a mounting cover (141) fixedly mounted on the side wall of one of the side plates (6), a driving motor (142) is fixedly mounted in the mounting cover (141), a mounting block (143) is arranged on the outer side of the mounting cover (141), the output end of the driving motor (142) drives the mounting block (143) to rotate, detachable polishing cotton (144) is mounted on the side wall, far away from one side of the mounting cover (141), of the mounting block (143), and the driving motor (142) is electrically connected with the control plate (3).
  6. 6. The device for detecting the strength of the connecting point of the automobile body structural part according to claim 5, wherein the upper side cavity walls of the two air cavities (131) are fixedly connected with air outlet pipes (15) in an inserted mode, normally closed electromagnetic valves (16) are installed in the two air outlet pipes (15), connecting hoses (17) are fixedly communicated with each other, normally open electromagnetic valves (18) are installed in the two air outlet pipes (15), a bump (19) is arranged on one side, close to the supporting seat (5), of the mounting cover (141), the bump (19) is fixedly connected with the side wall of the same side plate (6), air spraying holes (20) communicated with the same side air outlet holes (136) are formed in the bump (19), a shunt electric control valve (21) is installed in the inner portion of each air spraying hole (20), and the normally closed electromagnetic valves (16), the normally open electromagnetic valves (18) and the shunt electric control valve (21) are electrically connected with the shunt electric control plate (3).
  7. 7. The device for detecting the strength of the connecting point of the automobile body structural part according to claim 4, wherein a refrigerating groove (22) is formed in the hole wall of one air outlet hole (136), a semiconductor refrigerator (23) is arranged in the refrigerating groove (22), the semiconductor refrigerator (23) is fixedly connected with the hole wall of the air outlet hole (136) on the same side, the cold end of the semiconductor refrigerator (23) is arranged in the refrigerating groove (22), the hot end of the semiconductor refrigerator (23) is arranged on the outer side of the air outlet hole (136), and the semiconductor refrigerator (23) is electrically connected with the control board (3).
  8. 8. The device for detecting the strength of the connecting point of the automobile body structural part according to claim 1, wherein one side wall of the side plate (6) is fixedly provided with a mounting sleeve (24), the inside of the mounting sleeve (24) is slidably connected with a limiting plate (25), the side wall of the limiting plate (25) is slidably inserted with a limiting bolt (26), two groups of round holes (27) matched with the limiting bolt (26) are formed in the side wall of the mounting sleeve (24), a limiting nut (28) is in threaded connection with the rod wall of the limiting bolt (26), and a slot inserting blade (29) is fixedly arranged on the side wall of the limiting plate (25) far away from one side of the side plate (6).

Description

Automobile body structure tie point intensity detection device Technical Field The invention belongs to the technical field of vehicle body connection detection, and particularly relates to a device for detecting the strength of a connecting point of a vehicle body structural part of an automobile. Background The safety of automobile running highly depends on the stability of the structure of the automobile body, and the quality of the connecting point of the automobile body, especially the welding point, is key, the strength of the welding point is insufficient, and in the running of the automobile, the connecting looseness, the structural deformation and even the breakage of the key parts are easily caused under the actions of vibration, jolt and complex stress, so that the strength of the connecting point of the automobile body meets the requirements, and the strength detection of the connecting point is required. At present, ultrasonic detection is a common method for detecting the strength of welding spots by virtue of the advantages of rapidness and no damage, and can finish detection work by attaching a special probe to the welding spots, for example, the portable ultrasonic detection equipment for automobile welding spots disclosed in patent publication No. CN117907441A provides convenience for detection work, however, in practical application, the automobile body has a complex structure, a plurality of bending parts exist on the automobile body, the welding spots are distributed all over the automobile body, in addition, in the welding process, the welding spots generate deformation of different degrees due to the action of heat and pressure, the factors interfere ultrasonic wave transmission and signal reception, and the detection precision is seriously affected, so that the final use effect is poor. Disclosure of Invention The invention aims to solve the problems and provide a device for detecting the strength of a connecting point of a vehicle body structural member. In order to achieve the aim, the technical scheme is that the device for detecting the strength of the connecting point of the automobile body structural part comprises a box body, wherein a storage battery assembly and a control board are arranged in the box body, a holding rod is arranged at the end part of the box body, a supporting seat is fixedly arranged at one end of the holding rod far away from the box body, and the device further comprises: The two side plates are arranged on one side, far away from the box body, of the supporting seat, a connecting groove is formed in the side wall of the box body, a magnetic attraction moving assembly is arranged in the connecting groove, and the magnetic attraction moving assembly is used for driving the two side plates to move; The two insulating blocks are arranged between the two side plates, the two side plates are fixedly connected with the end parts of the insulating seats on the same side, the two insulating blocks and the side walls of the side plates on the same side are provided with mounting grooves together, elastic conductive films are arranged in the two mounting grooves, connecting components are arranged in the mounting grooves and used for fixing the elastic conductive films and sealing the notch of the mounting groove on the same side in cooperation with the elastic conductive films; The gas generating unit is arranged in the two side plates and is used for conveying gas flow to the interiors of the two mounting grooves; and the cleaning unit is arranged on the side wall of one side plate and used for cleaning welding spots of the vehicle body. Preferably, the magnetic attraction moving assembly comprises a non-magnetic rod fixedly arranged in the connecting groove, two side plates are in sliding connection with the rod wall of the non-magnetic rod, supporting springs are fixedly arranged between the side wall of the opposite side of each side plate and the groove wall of the connecting groove, two electromagnetic rings are sleeved on the rod wall of the non-magnetic rod and fixedly connected with the side wall of the side plate on the same side in an inserting mode, and the two electromagnetic rings are electrically connected with the control board. Preferably, the two connecting components comprise conducting rings fixedly mounted in the mounting groove, the notch of the mounting groove is in threaded connection with an insulating sleeve, the end part of the insulating sleeve is used for crimping the outer edge of the elastic conducting film on the side wall of the conducting ring, and the elastic conducting film is electrically connected with the control board through the conducting ring. Preferably, the gas generating unit comprises a gas cavity arranged in the two side plates, the two gas cavities are all connected with pistons in a sliding manner, the side walls of one side of the two pistons are all fixedly connected with T-shaped sliding rods, the two T-shaped