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CN-121977855-A - Bending endurance test device and method for automobile transmission shaft

CN121977855ACN 121977855 ACN121977855 ACN 121977855ACN-121977855-A

Abstract

The application discloses a bending endurance test device and a test method for an automobile transmission shaft, and relates to the technical field of automobile part performance test; the test device comprises a test bed, wherein a test mechanism is arranged at the upper part of the test bed and used for checking the durability of a transmission shaft, the test mechanism comprises an execution assembly, the execution assembly comprises a transmission shaft to be tested, the transmission shaft to be tested is arranged in the middle of the test bed, driving parts used for testing the transmission shaft to be tested are arranged at two ends of the transmission shaft to be tested, and through the cooperation of an execution motor and a driving motor, rotation and alternating bending load are synchronously applied, and the worm wheel, the worm and the link mechanism drive a turntable to eccentrically revolve, so that the compound working conditions of passing a ridge, a pit and the like are truly simulated, the accuracy and the reliability of the durability test are improved, the included angle of the link can be changed by rotating an adjusting screw to adjust the bending amplitude, different road conditions are adapted, meanwhile, the motor is adjusted to drive the mobile station to automatically adjust the distance, transmission shafts with different lengths are quickly adapted, and the test accuracy and efficiency are effectively improved.

Inventors

  • GAO JUN

Assignees

  • 浙江久开传动轴有限公司

Dates

Publication Date
20260505
Application Date
20260303

Claims (10)

  1. 1. The bending durability test device for the automobile transmission shaft comprises a test bed (1) and is characterized in that a test mechanism (2) is arranged on the upper portion of the test bed (1) and used for checking the durability of the transmission shaft, and the test mechanism (2) comprises: the execution assembly (21) comprises a transmission shaft (212) to be tested, which is arranged in the middle of the test stand (1), wherein driving components for testing the transmission shaft (212) to be tested are arranged at two ends of the transmission shaft (212), and mounting components for quickly fixing the end of the transmission shaft (212) to be tested are arranged at the end parts of the driving components; The feeding and discharging assembly (22) is arranged on one side of the upper part of the test bed (1) and is used for conveniently and rapidly feeding and discharging the transmission shaft (212) to be tested; And the protection assembly (23) is arranged at the upper part of the test stand (1) and is used for isolating a test area during detection.
  2. 2. The bending endurance test device for the automobile transmission shaft according to claim 1, wherein the driving component comprises a first moving table (211) arranged on one side of the top end of the test table (1), an execution motor (2111) is fixedly arranged on the top end of the first moving table (211), a torque sensor (2112) is fixedly arranged on one side of the top end of the first moving table (211), the execution motor (2111) is in transmission connection with the torque sensor (2112) through a coupling, and the transmission shaft (212) to be tested is fixedly connected with the driving end of the torque sensor (2112) through a flange; The test bench is characterized in that a second moving table (213) is arranged on the other side of the top end of the test bench (1), an installation cover (214) is fixedly arranged on the top end of the second moving table (213), a worm (2142) is rotatably arranged on the lower portion of the installation cover (214), a driving motor (2141) is fixedly arranged on one side of the lower portion of the installation cover (214), the driving motor (2141) is in transmission connection with the worm (2142) through a transmission belt, a worm wheel (2143) in meshed connection with the worm (2142) is rotatably arranged on the upper portion of the installation cover (214), a driving connecting rod (2144) is fixedly arranged in the middle of one end of the worm wheel (2143), a rotary table (215) is fixedly arranged on the other end of the driving connecting rod (2144), an adjusting screw (2146) is rotatably arranged on one end of the upper portion of the driving connecting rod (2145), and threads on the lower portion of the adjusting screw (2146) are arranged in the middle of one end of the driving connecting rod (2145).
  3. 3. A bending endurance test apparatus for an automotive transmission shaft according to claim 2, wherein the mounting member includes a bearing (2151) fixedly mounted on one side of a middle portion of the turntable (215), a clamping disc (216) is fixedly mounted on a middle portion of the bearing (2151), a stepping motor (2161) is fixedly mounted on a middle portion of the clamping disc (216), a first gear (2162) is rotatably mounted on a middle portion of one side of the first gear (2162), three toothed plates (2163) which are engaged with the first gear (2162) are slidably mounted on one side of the clamping disc (216), three sliding blocks (2164) which are engaged with the toothed plates (2163) are slidably mounted on one side of the clamping disc (216), clamping blocks (2165) are fixedly mounted on one ends of the three sliding blocks (2164), and the other end of the transmission shaft (212) to be tested is engaged with the clamping blocks (2165).
  4. 4. The bending endurance test device for the automobile transmission shaft according to claim 1, wherein the loading and unloading assembly (22) comprises a portal frame (221) fixedly installed at one side of a test bench (1), two symmetrically-distributed guide rails (2221) are fixedly installed at the upper part of the portal frame (221), two sliding plates (222) are slidably installed at one side of the two guide rails (2221), a driver (224) is arranged at one side of each sliding plate (222), sliding rails (2241) are fixedly installed at two sides of each driver (224), a plurality of sliding rails (2241) are slidably clamped at the middle part of each sliding plate, two symmetrically-distributed adjusting cylinders (223) are fixedly installed at one side of each sliding plate (222), driving ends of the adjusting cylinders (223) are installed at the upper part of each driver (224), a servo motor (2261) is fixedly installed at one side of each sliding plate (222), gears (62) at the driving ends of the two servo motors (2261) are fixedly installed at two driving ends of the two sliding plates (226), two clamping jaws (221) are fixedly installed at one side of each sliding plate (224), one side of the test bed (1) is provided with a conveying belt (227); The upper portion slidable mounting of test bench (1) has two supporting tables (228), two the top of supporting table (228) is all fixed mounting has a set of lift cylinder (2281), two sets of the drive end of lift cylinder (2281) is all fixed mounting has elevating platform (2282).
  5. 5. The bending endurance test device for the automobile transmission shaft according to claim 1, wherein the protection component (23) comprises two protection covers (231) arranged on the upper portion of the test stand (1), two symmetrically distributed fixing nails (232) are arranged on the lower portions of the two protection covers (231) in a sliding clamping mode, a plurality of fixing holes (233) matched with the fixing nails (232) for use are formed in one side of the upper portion of the test stand (1), two symmetrically distributed installation frames (217) are fixedly installed in the middle of the protection cover (231), and industrial cameras (2171) are detachably installed on one side of each installation frame (217).
  6. 6. The bending endurance test device for the automobile transmission shaft according to claim 2, wherein two symmetrically distributed guide grooves (218) are formed in the middle of the top end of the test stand (1), and the lower parts of the first moving table (211) and the second moving table (213) are slidably clamped in the middle of the guide grooves (218).
  7. 7. The bending endurance test device for the automobile transmission shaft according to claim 2, wherein two symmetrically distributed adjusting motors (219) are fixedly installed at the lower portion of the test stand (1), two symmetrically distributed driving screws (2191) are rotatably installed at the middle portion of the test stand (1), the two driving screws (2191) are in transmission connection with the adjusting motors (219) through synchronous belts, and the middle portions of the second moving stand (213) and the first moving stand (211) are in threaded installation at the middle portion of the driving screws (2191).
  8. 8. The bending endurance test device for the automobile transmission shaft according to claim 4, wherein four pins (229) which are uniformly distributed are slidably clamped at the lower parts of the two supporting tables (228), and two groups of pin holes (2291) which are matched with the pins (229) are formed at the top end of the test table (1).
  9. 9. The bending endurance test device for the automobile transmission shaft according to claim 5, wherein two symmetrically distributed sliding grooves (234) are formed in the upper portion of the test stand (1), and the lower portions of the two protective covers (231) are slidably clamped in the middle of the sliding grooves (234).
  10. 10. A test method for an automotive transmission shaft bending durability test apparatus employing a test apparatus for automotive transmission shaft bending durability according to any one of claims 1 to 9, characterized by comprising the steps of: S1, fixing two ends of a transmission shaft (212) to be tested by a worker through flanges and mounting parts respectively; s2, driving a transmission shaft (212) to be tested to rotate and swing through a driving part of the transmission shaft, detecting the durability of the transmission shaft, and isolating a test area of the transmission shaft from the external environment through a protection assembly (23) in the durability test process; And S3, after the detection is finished, the material can be taken down and collected through a loading and unloading assembly (22).

Description

Bending endurance test device and method for automobile transmission shaft Technical Field The invention relates to the technical field of performance test of automobile parts, in particular to a bending endurance test device and a test method for an automobile transmission shaft. Background The automobile transmission shaft is used as a core component of a vehicle power transmission system and bears the key task of stably transmitting the torque of an engine to a driving wheel, the working state of the automobile transmission shaft directly determines the running safety, reliability and power efficiency of the vehicle, and in the actual running working condition, the transmission shaft is required to bear the centrifugal force generated by high-speed rotation, and is also required to cope with alternating bending load caused by road bump, steering operation and the like, and fatigue cracks, permanent deformation and even fracture failure are easy to occur after long-term service. The method comprises the steps of S1, assembling an automobile transmission shaft bending endurance test device, S2, eliminating initial unbalance of a transmission shaft to be tested, S3, installing a maximum allowable dynamic unbalance balancing weight on the automobile transmission shaft, S4, carrying out endurance test at the highest speed achieved when the whole automobile runs on a flat road, firstly eliminating the initial unbalance of the transmission shaft to be tested, then loading the maximum allowable dynamic unbalance on the transmission shaft to be tested, verifying the influence of bending torsion moment generated by the transmission shaft when the transmission shaft is at the maximum allowable dynamic unbalance on a transmission system, and has the characteristics of strict design thought, short test period and low test cost. Based on the search of patent numbers, the following defects in the prior art are combined: The existing transmission shaft bending endurance test device has the defects that the working condition simulation reality is insufficient, most devices can only apply rotary load or bending load independently, the actual working condition of synchronous action of rotation and alternating bending is difficult to reproduce, bending amplitude is difficult to adjust, test requirements of different vehicle types and different road conditions cannot be quickly adapted, clamping and loading and unloading efficiency is low, the conventional device is used for connecting and fixing two ends of a transmission shaft through flanges by relying on manpower, labor intensity is high, test precision is influenced by clamping coaxiality deviation easily, and automatic unloading transfer equipment is lacked, so that the requirements of continuous test of quick loading and unloading are difficult to meet in the process of batched endurance test. Disclosure of Invention The invention aims to provide a bending endurance test device and a test method for an automobile transmission shaft, which are used for solving the problems that the existing transmission shaft bending endurance test device has insufficient working condition simulation reality, is difficult to synchronously apply rotation and bending load and difficult to adjust, and has low clamping loading and unloading efficiency and cannot meet the requirement of batch test. In order to solve the technical problems, the technical scheme is that the bending endurance test device for the automobile transmission shaft comprises a test bed, wherein a test mechanism is arranged at the upper part of the test bed and used for checking the durability of the transmission shaft, and comprises: The execution assembly comprises a transmission shaft to be tested, which is arranged in the middle of the test bed, wherein driving components for testing the transmission shaft to be tested are arranged at two ends of the transmission shaft to be tested, and mounting components for quickly fixing the end parts of the transmission shaft to be tested are arranged at the end parts of the driving components; the feeding and discharging assembly is arranged on one side of the upper part of the test bed and is used for conveniently and rapidly feeding and discharging the transmission shaft to be tested; and the protection component is arranged on the upper part of the test bed and used for isolating the test area during detection. Preferably, the driving part comprises a first moving table arranged on one side of the top end of the test bed, an execution motor is fixedly arranged on the top end of the first moving table, a torque sensor is fixedly arranged on one side of the top end of the first moving table, the execution motor is in transmission connection with the torque sensor through a coupler, and a transmission shaft to be tested is fixedly connected with the driving end of the torque sensor through a flange; The top opposite side of test bench is installed No. two mobile stations, no