R & D Center

　　Safety matters
　　1. The instrument ground terminal must be reliably connected with the power supply ground.
　　2. Operators must wear insulating gloves and have insulating pads under their feet.
　　3. Before turning on the power of the instrument, turn the "voltage regulation" knob anticlockwise to the end.
4. Do not contact the tested parts and test wires in the test state.
　　5. Do not manually open the high-voltage output end to the enclosure or ground wire to avoid damaging the instrument.
　　6. In case of accident, cut off the power supply immediately.
　　Operation specification
　 1. Pour 5mm diameter steel ball into the test shoe, completely cover the insole, to be tested. 　　2. Confirm whether the power supply meets the requirements, and check whether the "voltage regulation" knob of the instrument rotates counterclockwise to the end.
　　3. Open the glass door, put the test shoes on the iron plate in the test box, and put the shoes directly on the bottom of the shoes to contact with the iron plate.
　　4. Put the test black electrode lead into the shoe and clamp it on the chain, and clamp the red electrode on the iron plate.
　　5. Close the glass door, make sure that the "voltage regulation" knob is set to "0", and then turn on the power switch.
　　6, the use of "timing test" or "manual test" first choose to set up and then press the "start" switch, and then adjust the "voltage adjustment" knob to make the output voltage to the desired value.
　　7. During the test, if the "leakage current" is detected to exceed the set value, the instrument will automatically alarm and cut off the output voltage, then press the "reset" switch.
　　8. If the detected "leakage current does not exceed the set value, the instrument will return to the test state after the timing time is up or the" reset "switch is pressed.
　　9. At the end of each test, the "voltage regulation" button must return to the "0" position after the end of the chamber.
　　10. After the test, make records and turn off the power supply.

　 　　1. Preparations
　　(1) Confirm that the power supply meets the specified requirements.
　　(2) Prepare test samples as required.
　　2. Test operation
　　(1) According to the height of the sample, set the spacing between the upper and lower limit fixing buttons and fix them.
　　(2) Start the "power" key, press the "up" key, so that the upper pressure plate can rise to the appropriate test space, and the sample can be put down smoothly.
　　(3) Put the cylinder into the inner end of the sample, place the sample on the clamping device and adjust it, then place the clamping device and the sample between the pressure plates of the pressure testing machine, align the center of the safety shoes with the center of the upper pressure plate, and fix the sample with the clamps.
　　(4) Static pressure test should be replaced by static pressure fixture, and the required test speed should be set according to the test regulations. Also set the unit of force value and set the shutdown mode.
(5) Under the condition of applying (15 soil 0.1) kn force to the safety shoes, press the "down" key to move the upper pressure plate downward, and press the "stop" key when the upper pressure plate slightly contacts with the sample.
(6) Take out the cylinder and use a dial indicator to measure the minimum height of the cylinder after compression to the nearest 0.5mm, which is the distance after pressure resistance.
(7) Turn off the power after the test.
Operation of puncture resistance test < br / > 1. Preparation < br / > (1) Confirm that the power supply meets the specified requirements.
(2) Prepare test samples as required < br / > 2. Test operation < br / > (1) Install the piercing fixture. First loosen the screws of the compression test fixture, take away the fixture, and then lower the piercing fixture on the platform base. Then install the puncture part of the upper fixture and tighten the fixing screws.
(2) According to the height of the sample, set the spacing between the upper and lower limit fixing buttons and fix them.
(3) Start the "power" key and press the "rise" key to make the upper pressure plate rise to the appropriate test space and the sample can be put down smoothly.
(4) The test is placed on the base plate so that the test pin can penetrate the bottom.
(5) Under the condition that the penetration test speed is 10 ± 3mm / min, press the test pin on the sole until the sole is completely penetrated, and at the same time, measure the maximum force, unit: Newton. Note that the entire length of the test pin should not penetrate the specimen.
(6) The test points shall be at four different positions, at least 30mm apart from any two points, and the penetration point shall be at least 10 mm from the edge of the inner bottom. For the pattern bottom, the test points shall be tested between patterns. Two of the four test points shall be 10-15mm away from the curve corresponding to the bottom edge of the last, and the minimum value shall be recorded as the test result.
(7) After the test, turn off the power.
3、 This test is in accordance with GB / t20991-2007

　　1. Preparation < br / > (1) Confirm that the power supply meets the requirements.
(2) Prepare test samples.
2. Test operation < br / > (1) Turn on the power key on the control box and enter the operating system. Press the "down" key to lower the cross arm and hold the impact head, and set the impact height on the test screen.
(2) Press the "up" key to lift the impact head to the proper position.
(3) Loosen the fixing bolt, and the clamp block can move up and down. Insert the shoe head test piece into the Y clamp block, adjust the middle bolt, so that the clamp block is at a proper height, parallel to the height of the sole, and then lock the fixing bolt to clamp the test piece.
(4) Adjust the height of test piece and impact head. Press the "up" or "fine adjustment down" key to reach the set height, and fix the height scale knob at the indicated height position.
(5) Press the "test" key, the electromagnet will be cut off, and the impact blade will drop the impact test piece. At this time, pay attention to safety. The operator should be at least 1 meter away from the machine.
(6) After the impact action is completed, press the "fine adjustment down" key to make the cross arm absorb the impact head, and then press the "up" key to make the cross arm and the impact head rise to a certain height, the operator can release the clamp and take out the test piece.
(7) After the test, turn off the power.
3. This test is in accordance with GB / t20991-2007.

　　Preparation
1. Take the sample. The sample size shall be the same or smaller than the standard folding last size.
2. Check whether the appearance quality of the big bottom and the surrounding strip of the sample meets the standard.
Operation method < br / > 1. Plug in the power, turn on the power switch, and enter the test interface after the welcome interface appears.
2. Press the "set" key to enter the test number setting state mode. Enter the number of tests by each key mark.
3. After setting the test times, press the "set" key again to start the operation.
4. Shake the flexure bracket by hand, adjust the angle of the test fixture, and then install the sample.
5. Adjust all parts of the testing machine to be normal, and then place the standard folding last in the sample shoe.
6. turn the shoe into the front, and place it on the front palm of the tester. Then adjust the best position in the clamping plate to compress the front part of the shoe. Then turn the angle adjusting screw of the forefoot to adjust the angle of the forefoot plate, so that the heel of the shoe can naturally rest on the heel sliding block, and finally tighten the top bolt column to firmly compress the forefoot part of the shoe sample.
7. Use the fastening rope to bypass the V-shaped buckle and rope pin post of the last, and bind the heel of the shoe sample to the heel sliding block.
8. Loosen the joint head bolt, adjust the deflection angle required by the standard through the angle adjusting bolt of the heel. After the adjustment, it is necessary to tighten the joint head bolt. The angle of the test deflection can be observed in the angle pointer disk.
9. For the test requiring a large sole cut, use a cutting knife to cut the sample sole according to the requirements of the standard, and then move the air outlet to align with the cut.
10. Press the "start / close" key, and slowly accelerate to the specified bending frequency through the speed regulating knob. The standard specified frequency is 230 times / min.
11. When it starts to run to about 500 times, press the "close" key, pause the test, check whether the sample is fixed firmly, and then continue the start-up test after confirmation. After running to the set number of flexure times, the tester will automatically stop running.
12. After the test, the sample can be taken out for inspection and record.
13. Turn off the power and clean the testing machine.
Executive standard of this testing machine < br / > 1. Hg / t2871-2008 test method for flexure of rubber overshoes (method a).
2. GB / 3903.1-2008 general test methods for footwear - folding test method.

1. Start and connect the power supply, turn on the computer and display, make the computer enter the windows operating system, click the windows software icon to enter the application interface, and the computer starts up.
2. Test piece clamping operation: according to the specific direction of rotation of the clamp, first clamp the upper end of the sample with the upper chuck. Select the moving speed of the crossbeam as 50mm / min in the computer, press the "up" or "down" button of the remote control box, and adjust the position of the middle crossbeam so that the lower chuck is just suitable for the lower end of the clamping specimen. Adjust the zero point of the test force to clamp the lower chuck. As soon as the sample is clamped, the computer will show that there is a small initial load. If necessary, you can further adjust the position of the middle crossbeam through the "up" or "down" button of the remote control box or the computer mouse at a low speed, so that the force value on the computer is displayed as zero. If only a rough test is carried out, it is not necessary to adjust the zero point and carry out the test directly.
3. Test deformation: if it is necessary to test the deformation of the sample, install the extensometer on the sample through the rubber strip, remove the adjusting gasket, and adjust the zero point of the sample deformation display.
4. Select appropriate automatic control test procedure or manual operation to control the rise of beam.
5. If the extensometer is used for the test, the extensometer shall be removed before the specimen breaks, or the conditions for measuring the specimen deformation with the extensometer shall be set according to the software user manual, and the extensometer shall be removed quickly according to the prompts of the test software to prevent the extensometer from being damaged.
6. After the test, the testing machine will stop automatically, and the user shall enter the data analysis interface to process the test data.
7. Rotate the handle, loosen and remove the sample according to the specific rotation direction prompt of the clamp.
8. Print or save the processing results and complete the test.
9. Cut off the power supply after all tests are completed. Cut off the power supply in the following order: turn the power switch of the testing machine to off state, exit the computer application software, turn off the computer, cut off the computer, cut off the main power supply.
10. Precautions: 1) before starting the testing machine, it is necessary to check the limit switch position of the upper and lower clamps to make them meet the requirements of the test stroke and ensure that the upper and lower clamps are at least 10cm apart.
2) When placing the sample, be sure to put the sample in more than 2 / 3 of the jaw.
3) During the test, in case of emergency, please turn off the stop button immediately to protect the equipment.
11. Working conditions: temperature 10-35 ℃

　　Preparation of test pieces: according to the provisions of the standard, take 3 test pieces as specified, take the maximum area of the sole, draw a straight line, and then use a wedge needle to pierce three holes to measure the hole diameter.
　　Operation
　　1、启动1. Start the power switch, first press the "Zeo" reset key to reset, then press the "SART" start key, run the test machine idly first, if there is no problem in operation, the machine will be shut down for operation.
2. Put the clamp in a flat state, and then place the test piece in the machine clamp and fix it.
3. Set the test times as required, and then press the save key to save the data.
4. Press the "start" key, turn the "speed control knob" to enter the test.
5. Press the stop key to end the test.
6. Turn off the power and take out the test piece.
This test is in accordance with GB / 209912007 test methods for personal protective equipment shoes.

Sample preparation
1. Any size of specimen smaller than the chamber.
2. Number of samples: more than two pieces of the same material are tested.
Sample placement < br / > 1. Open the test door and place the specimen in the circle area.
2. Adjust the height of the turntable. The distance between the sample and the bulb is 250mm when the bulb is irradiated; the distance between the sample and the bulb is 200mm when the UV ultraviolet lamp is irradiated.
Test control < br / > 1. Turn on the power switch and heating switch, and set the test temperature and time as required.
2. Turn on the rotary switch and turn off the air supply switch. However, it is necessary to turn on the air supply switch 3-10 times an hour to replace the air in the box.
3. When the test setting time is reached, the instrument will stop working automatically and take out the sample.
Result judgment: < br / > Under the standard light source to the color lamp, use the colorimetric card to directly visually evaluate the corresponding yellowing resistance level of the test sample.
Test conditions: indoor temperature: 23 ± 2 ℃; humidity: 60 ± 5%.
After the test, turn off the power.
This test standard is in accordance with Hg / t36892014 test method for yellowing resistance of footwear.