Differential locking mechanism test method and rack

Abstract

The invention discloses a differential locking mechanism test method and rack, which can ensure that tooth crests and tooth grooves of a sliding gear sleeve spline and a locking spline of a differential product to be tested randomly correspond in the detection process; when the differential product to be tested is driven by external force to rotate at a low speed and is not locked, one output end of the differential product does not rotate, and the other output end of the differential product freely rotates; when the differential product to be tested is driven by external force to rotate at a low speed and is subjected to differential locking, one output end and the other output end of the differential product rotate synchronously; and the differential product to be tested is controlled to be circularly switched between the unlocked state and the differential locking state of the differential product for multiple times, and whether the abrasion loss of the locking spline and a control mechanism of the differential product is qualified or not is verified. According to the invention, the phenomenon of asynchronous rotation of the input shaft and the output shaft caused by differential motion caused by road surfaces or vehicle tires during vehicle driving can be truly simulated, the purpose of simulating the state of the differential locking mechanism of the vehicle is achieved, and the test result is more real and credible.

Description

technical field [0001] The invention discloses a differential gear locking mechanism detection method and a test bench, which belong to the technical field of differential gear detection, and specifically discloses a differential gear locking mechanism testing method. Background technique [0002] Off-road vehicles and heavy trucks with poor road conditions are often equipped with a differential lock mechanism in the power transmission assembly with a differential function such as the transfer case or the middle axle or the front and rear axles in order to pursue the ability to get out of trouble and the ability to drive on low-adhesion roads. The function of the speed lock mechanism is to make the two output ends of the differential have the same speed (differential lock), so that the car can get out of trouble or run normally on low-adhesion roads. [0003] The differential lock connects the input of the differential with one of the outputs through the sliding gear sleeve ...

AI Technical Summary

Problems solved by technology

Among them, in the static shift test, there will always be a situation where the spline of the sliding gear sleeve and the tooth top of the locking spline face the tooth groove (such as Figure 4 ), it is impossible to simulate the actual situation of the whole vehicle, and the test results are not credible; the dynamic test of the bench can only use the traditional fatigue durable bench (one driving end, two loading ends), the test is cumbersome, the cost is high, and the requirements for testers are high. There is a lot of waste of bench resources; special road tests are carried out on the whole vehicle, the test cycle is long, and more manpower, material and financial resources are required

Whether it is a traditional bench dynamic test or a vehicle road test, there are defects such as cumbersome testing, large investment in testing resources, and high costs.

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