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Test report of gasket type and bearing type swing cylinder

hit count: Updated: 17/04/05 13:55:04 Source: avervenus.com [ close ] share:
    I. Experimental purpose The spiral swing oil cylinder has the characteristics of large output torque, compact structure and stable operation, so it is widely used in various types of construction machinery. At present, there are mainly two types of support between the swinging oil cylinder housing and the end cover on the market, namely the gasket type and the bearing type. The main purpose of this test is to check the performance parameters and service life of the two types of oil cylinders.
    Second, the experimental principle
    1. The test is mainly based on GB / T 15622-2005 "Hydraulic Cylinder Test Method" and JB / T 10205-2010 "Hydraulic Cylinder" standards for testing swing cylinders (there are currently no national and industrial standards for swing cylinders).
    2. Experimental conditions
    1) Experimental platform: hydraulic test bench
    2) Test oil: Mobil DTE-25 anti-wear hydraulic oil

    3) Pressure sensor: range 0-400bar, corresponding frequency 300HZ, accuracy less than 0.1%.

    3. The axial load during the experiment is 420KG, the pump outlet pressure is adjusted to 100bar, and it rotates 180 degrees clockwise, which takes 6.82s. During the rotation, the pressure is 80-90bar. 6.61s, rotating pressure 75 ~ 85bar, starting impact pressure reaches 96bar.
    After 32,000 cycles, grab the active 180 degrees clockwise, time 6.29s, the pressure during rotation is 70 ~ 80bar, the starting pressure shock reaches 93bar, rotate 180 degrees counterclockwise, the time is 6.41s, and the pressure during rotation is 72 ~ 81bar, starting pressure shock can reach 93bar.
    The axial load is 595KG, the pump outlet pressure is adjusted to 130bar, and the clockwise rotation is 180 degrees, which takes 4.85s. During the rotation, the pressure is 88-92bar, and the starting pressure shock reaches 115bar, and the counterclockwise rotation is 180 degrees, and the time is 4.93s. The pressure is 87 ~ 91bar, and the starting impact pressure reaches 116bar.
    After 32,000 cycles, grab the active 180 ° clockwise, time 6.5s, the pressure during rotation is 80 ~ 90bar, the starting pressure shock reaches 110bar6, turn 180 ° counterclockwise, the time is 6.48s, and the pressure during rotation is 78 ~ 85bar, starting pressure shock can reach 11bar. When the swing cylinder is started, there is a pressure fluctuation of 20 bar, and the number of shocks is 2 times.
    Fourth, component durability test Disassembly of the gasket-type swing cylinder 63,000 tests, including 32,000 times of axial load 420kg test, 31,000 times of 595kg load test, no jamming, abnormal noise during the test, disassembly after the experiment is completed .
    The bearing-type swing cylinder was loaded with 595 kg. When the number of tests reached 20,000, clockwise rotation of the swing cylinder would cause stagnation. After disassembly, the internal damage of the cylinder was found, and the experiment was terminated.

    After the endurance test, 63,000 tests were performed on the paddle-type swing cylinder, of which 63,000 tests were performed on the paddle-type swing cylinder, of which 32,000 times were tested with an axial load of 420kg, and 31,000 times were tested with a load of 595kg. During the test, no jamming or abnormality occurred. Ring, but the cycle time has increased.
    Bearing-type swing cylinders load 595kg. When the number of tests reaches 20,000, internal damage cannot be used.
    Use conclusion:
    The gasket type swing cylinder meets the requirements of vehicle use. It is recommended to use a gasket type swing cylinder.

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    Weihai Kate Hydraulic Technology Co., Ltd. Address: Dongjing Road, Huancui District, Weihai City, Shandong Province Contact: Wang Hongyi
    Phone: 0631-5789884
    Fax: 0631-5789884
    Email: weihaikaite@163.com
    Main products: swing cylinder, rotary cylinder