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CN-224209770-U - Clamping device for longitudinal detection of automobile crankshaft

CN224209770UCN 224209770 UCN224209770 UCN 224209770UCN-224209770-U

Abstract

The utility model discloses a clamping device for longitudinal detection of an automobile crankshaft in the field of crankshaft machining, which comprises a detector base, wherein two sides of the upper end of the detector base are respectively provided with an organic frame plate, the upper end of each frame plate is provided with a crankshaft detection frame, the upper end of each crankshaft detection frame is uniformly provided with a fixed plate from left to right, the side wall of each fixed plate is provided with a sliding block, the side wall of each crankshaft detection frame is provided with a slideway, the side wall of each fixed plate is provided with a screw hole, the screw holes are internally provided with a fastening piece, the lower end of each fastening piece is provided with a detection disc, each fastening piece comprises a fastening screw rod and an anti-falling screw rod, the outer part of each fastening screw rod is in threaded connection with a fastening nut, the automobile crankshaft machining detector can prevent the nut structure from rotating to generate a tooth-falling phenomenon, and the anti-falling screw rod and the fastening screw rod are kept in a stable connection limiting state under the engagement of a limiting column and the fastening screw rod, and the automobile crankshaft machining detector has a good tooth-falling prevention function and high connection strength.

Inventors

  • ZHANG JUN
  • WANG XING
  • GAN JUN

Assignees

  • 内江雨田机械制造有限公司

Dates

Publication Date
20260508
Application Date
20250506

Claims (7)

  1. 1. The clamping device for the longitudinal detection of the automobile crankshaft comprises a detection machine base (1), and is characterized in that two sides of the upper end of the detection machine base (1) are respectively provided with a machine frame plate (2), the upper end of the machine frame plate (2) is provided with a crankshaft detection frame (5), the upper end of the crankshaft detection frame (5) is uniformly provided with a fixing plate (6) from left to right, the side wall of the fixing plate (6) is provided with a sliding block (8), the side wall of the crankshaft detection frame (5) is provided with a slideway (7), the side wall of the fixing plate (6) is provided with a screw hole (9), the screw hole (9) is internally provided with a fastener (10), the lower end of the fastener (10) is provided with a detection disc, the fastener (10) comprises a fastening screw (17) and an anti-falling screw (26), the outer part of the fastening screw (17) is in threaded connection with a fastening nut (18), the bottom end of the fastening screw (17) is provided with an anti-falling screw groove (19), the anti-falling screw (26) is in the anti-falling screw groove (19), the anti-falling screw (26) is in threaded connection with three anti-falling cylinders (21) and the three anti-falling cylinders (20) are sleeved on the outer walls (21), the inner wall of each limit column (21) is provided with a spiral groove (22) matched with the fastening screw (17).
  2. 2. The clamping device for longitudinal detection of the automobile crankshaft according to claim 1, wherein the inner wall of the anti-falling cylinder (20) is provided with reverse internal threads (23), the joint of the external part of the anti-falling screw (26) and the anti-falling cylinder (20) is provided with reverse external threads (24), and the reverse internal threads (23) are matched with the reverse external threads (24).
  3. 3. The clamping device for longitudinal detection of automobile crankshafts according to claim 2, wherein a turntable (25) is arranged at the end part of the anti-falling screw (26), and a cross groove is formed in the outer wall of the turntable (25).
  4. 4. The clamping device for longitudinal detection of automobile crankshafts according to claim 1, wherein the outer wall of the fastening nut (18) is provided with an annular rotary groove (11), and the end part of the limiting column (21) is arranged in the annular rotary groove (11).
  5. 5. The clamping device for longitudinal detection of the automobile crankshaft according to claim 1 is characterized in that a fixing ring (12) is fixedly arranged at the upper end of the outer part of the fastening screw (17), and an annular pressing sheet (14), a spring (16) and an annular rubber sheet (15) are sleeved on the circumferential surface of the fastening screw (17).
  6. 6. The clamping device for longitudinal detection of automobile crankshafts according to claim 5, wherein the annular pressing piece (14) is located on the upper side of the fixed ring (12), the spring (16) is located on the upper side of the annular pressing piece (14), the annular rubber piece (15) is located on the lower side of the fixed ring (12), and the extrusion piece (13) is fixedly installed at the edge of the lower end of the annular pressing piece (14).
  7. 7. The clamping device for longitudinal detection of automobile crankshafts according to claim 1, wherein an electric push rod (3) is mounted on the side wall of the frame plate (2), and a crankshaft chuck (4) is mounted on the end portion of the electric push rod (3).

Description

Clamping device for longitudinal detection of automobile crankshaft Technical Field The utility model relates to the technical field of crankshaft machining, in particular to a clamping device for longitudinal detection of an automobile crankshaft. Background The crankshaft is the most important part in the engine, bears the force transmitted by the connecting rod, converts the force into torque, outputs the torque through the crankshaft and drives other accessories on the engine to work, and the crankshaft is subjected to centrifugal force of rotating mass; However, the crankshaft detecting machine in the prior art has some defects, for example, the detecting disc can vibrate continuously, the tooth-back preventing effect of the bolt fastener structure is poor, the nut on the bolt can vibrate continuously to cause tooth-back, the service life of the fastener is easy to influence after long-term use, and therefore the prior art needs to be improved. Disclosure of utility model The utility model aims to provide a clamping device for longitudinal detection of an automobile crankshaft, which solves the problems that a detection disc provided in the background art can continuously vibrate, the tooth-withdrawal prevention effect of a bolt fastener structure is poor, the tooth-withdrawal is caused by continuous vibration of a nut on a bolt, and the service life of the fastener is easily influenced after long-term use. The clamping device for longitudinal detection of the automobile crankshaft comprises a detector base, wherein two sides of the upper end of the detector base are respectively provided with an organic frame plate, the upper end of the detector base is provided with a crankshaft detection frame, the upper end of the crankshaft detection frame is uniformly provided with a fixing plate from left to right, the side wall of the fixing plate is provided with a sliding block, the side wall of the crankshaft detection frame is provided with a slide way, the side wall of the fixing plate is provided with a screw hole, a fastener is assembled in the screw hole, the lower end of the fastener is provided with a detection disc, the fastener comprises a fastening screw and an anti-falling screw, the outer part of the fastening screw is in threaded connection with a fastening nut, the bottom end of the fastening screw is provided with an anti-falling screw groove, the outer part of the anti-falling screw is sleeved with an anti-falling cylinder, the outer wall of the anti-falling cylinder is provided with three limit columns, the three limit columns are distributed in a triangular shape, and the inner wall of each limit column is provided with a spiral groove matched with the fastening screw. Preferably, the inner wall of the anti-drop cylinder is provided with a reverse internal thread, the joint of the external part of the anti-drop screw rod and the anti-drop cylinder is provided with a reverse external thread, and the reverse internal thread is matched with the reverse external thread. Preferably, the end part of the anti-drop screw is provided with a rotary table, and the outer wall of the rotary table is provided with a cross groove. Preferably, the outer wall of the fastening nut is provided with an annular rotating groove, and the end part of the limiting column is arranged in the annular rotating groove. Preferably, a fixed ring is fixedly arranged at the upper end of the outer part of the fastening screw, and the circumferential surface of the fastening screw is sleeved with an annular pressing sheet, a spring and an annular rubber sheet. Preferably, the annular pressing piece is located on the upper side of the fixed ring, the spring is located on the upper side of the annular pressing piece, the annular rubber piece is located on the lower side of the fixed ring, and the extrusion block is fixedly installed at the edge of the lower end of the annular pressing piece. Preferably, an electric push rod is mounted on the side wall of the frame plate, and a crankshaft chuck is mounted at the end part of the electric push rod. Compared with the prior art, the detection machine for processing the automobile crankshaft has the beneficial effects that the structural design is reasonable, after the fastening nut and the fastening screw are screwed at the installation position of the detection disc, the anti-falling screw is embedded into the end part of the fastening screw, the fastening nut is circumferentially limited under the action of the anti-falling cylinder, the nut structure is prevented from rotating to generate the tooth-withdrawing phenomenon, and the anti-falling screw and the fastening screw are kept in a stable connection limiting state under the engagement of the limiting column and the fastening screw, so that the detection machine has a good tooth-withdrawing preventing function, high connection strength and extremely high connection stability. Drawings FIG. 1 is a schematic diagram of the struc