Vacuum cleaner hose abrasion tester

1.1 Applicable standard

comply withGB4706.7-2004in the standard21.101Requirements for mechanical strength testing of medium current hoses.

2 Main technical parameters and functions

2.1 Main technical parameters

1）Crank speed:30turn/min

2）Flexible hose movement distance:300-400mm

3）Wheel self rotation speed:0.1m/min

4）Heavy hammer quality:1Kg

5）Abrasive: Diamond sandP100

6)The maximum distance between the lowest position of the crankshaft and the center of the roller600mm

7）Power supply:220V

2.2 Main functions

1）Instrument control (orPLCIntelligent control, humanized operation.

2）Number of times0-99999Secondary can be set.

3）Time0-999Secondary adjustable

4)Powered by two sets of AC variable frequency motors（PLCUsing a stepper motor

GB/T 38048.2-2021/IEC 62885-2:2016

If the hose is damaged, it should be stated in the test report.

6.9 Repeated bending of hoses

6.9.1 Purpose

The purpose of this experiment is to determine the ability of a dry vacuum cleaner to repeatedly bend its hose during normal use, as hose damage can cause leakage and affect its performance

Performance of dry vacuum cleaner.

Note: The standard atmospheric pressure conditions specified in 4.1 are not required.

6.9.2 Test Equipment

As shown in Figure 17, the testing equipment includes a linkage mechanism with a hose connector clamping device. The connecting rod is operated by a pendulum (example)

The crank connecting rod device completes up and down movements with a frequency of (10 ± 1) times/min. The initial position of the connecting rod is horizontal, lift the connecting rod up

Form an angle of (40 ± 1) ° with the horizontal position.

Unit in millimeters

300±50 40

Da Ri

Attachment rope

Maximum lateral deviation of 3 °

2.5k

2.5kg

Figure 17 Hose bending test equipment

6.9.3 Test Methods

The hose connector is clamped on the connecting rod, and the distance between the fulcrum of the connecting rod and the end of the fixed end of the hose connector is (300 ± 50) mm.

Hang a 2.5kg weight on the hanging part of the hose and lift it to a height of (100 ± 10) mm above the mounting plate during swinging operation

During other running times, park on the installation board and remove all loads from the hoses. To complete all movements, the length of the hose can be reduced to about 300mm.

To avoid load swing on the hose, an adjustable ramp with a maximum slope of 3 ° can be used.

The number of swings completed is until the hose is damaged to the point where it cannot be used, and the number of tests is recorded.

Suggest stopping after 40000 consecutive swing tests.

6.10 Ability to maintain air flow characteristics

6.10.1 Purpose

The purpose of this experiment is to determine the ability of a dry vacuum cleaner to maintain air flow characteristics when the dust collector is partially filled with dust, representing

The situation of normal household use and dust in the home.

Note: Standard atmospheric pressure conditions are not required

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5）The overall steel frame structure has a high anti-corrosion coating on the exterior.