MT/T 102-1985Scraper conveyor central trough test specification (English PDF)

1 Test type 1

2 Type test shall be carried out in the following cases 1

3 Test equipment and measuring instruments 1

4 Test item 1

5 Test method 2

6 Test report 4

Appendix A System Diagram of Central Slot Test Device (Reference) 9

Central trough of scraper conveyor Test specification this specification is applicable to the test of the middle groove of the scraper conveyor and the down-slot transfer machine in the coal mining working face.

1 Test types

a. Type test;

b. Factory test.

2 Type test shall be carried out in the following cases a. Trial production of new products (including transfer of old products to the factory);

b. When changing the design, process and materials of the product affects the performance of the product;

c. When production is resumed after two years of suspension;

d. The mass-produced products are sampled every three years according to the type test project;

e. When users have objections to product quality.

3 Test equipment and measuring instruments

3.1 The test device shall meet the requirements of the corresponding test items.

3.2 Refer to Appendix A for the test device system.

3.3 Test instruments, recording instruments, etc. shall have inspection certificates and be calibrated item by item periodically.

3.4 The accuracy of the measuring instrument is ± 1.5%.

4 Test items

Various tests of the central tank shall be carried out according to the items specified in Table 1.

Test item

Test type

Type test factory test

1 Horizontal bending test of the central slot connection mechanism ×

2 Vertical bending test of the middle slot connection mechanism ×

3 Various strength tests of the middle slot connector

3.1 Tensile strength test of connecting pin in the middle slot

3.2 Vertical Bend Test of Central Slot Connecting Pin ×

3.3 Horizontal bending test of connecting pin in middle slot ×

3.4 Tensile strength test of the middle slot connecting ear Continued Test item Test type Type test factory test

3.5 Tensile strength test of central groove support

4 Various strength tests of the middle slot and middle plate

4.1 Bend test of middle slot and middle plate ×

4.2 Arch test of middle groove in plate ×

4.3 Non-axial loading test of the middle slot plate ×

5 Central groove test

5.1 Compressive strength test of the central groove ×

5.2 Non-axial load test of the middle slotted groove ×

6 Compression strength test of the middle groove bottom plate ×

7 Push-pull life test for middle groove ×

8 Horizontal Bend Test of Coal Fender (or Shovel) ×

Note.

means test; x means no test.

5 Test method

5.1 General requirements

5.1.1 The test schematic diagram and test requirements are carried out according to Table 2.

5.1.2 The number of measurements of each measured item shall be no less than two.

5.1.3 The middle slot of the same type, the number required for each test shall meet the requirements of the test project, and the corresponding connection parts are attached.

5.2 Horizontal bending test of the middle slot connection mechanism

5.2.1 When the groove in the middle of the test is bent horizontally, observe and record the maximum load, deformation, damage location and form.

5.2.2 Test installation method, loading head size, fulcrum size and span shall be performed according to Table 2.

5.2.3 Before loading, the horizontal bending angle should meet the design requirements.

5.2.4 The loading method is to slowly load until obvious deformation or damage occurs. Record the amount of deformation and the load at the time of failure.

5.3 Vertical bending test of the middle slot connection mechanism

5.3.1 When the vertical groove in the middle of the test is bent, observe and record the maximum load, deformation, damage location and form.

5.3.2 The test installation method, loading head, fulcrum size and span shall be performed in accordance with No. 2 in Table 2.

5.3.3 Before loading, the vertical bending angle should meet the design requirements.

5.3.4 The loading method is to slowly load until obvious deformation or damage occurs. Record the amount of deformation and the load at the time of failure.

5.4 Various strength tests of the middle slot connector

5.4.1 Tensile strength test of connecting pin

5.4.1.1 Test and record the maximum tensile load that the connecting pin can withstand in the axial direction, and observe the deformation and failure phenomena.

5.4.1.2 The sample installation shall be carried out in accordance with No. 3.1 in Table 2, using the original supporting bolts. The loading method is slow loading.

5.4.2 Connecting pin vertical bending test

5.4.2.1 Test and record the maximum bending load that the connecting pin can withstand in the vertical direction, and observe the deformation and breaking phenomenon.

5.4.2.2 The sample installation shall be carried out according to No. 3.2 in Table 2. The loading method shall be slow loading.

5.4.3 Horizontal bending test of connecting pin

5.4.3.1 Test and record the maximum bending load that the connecting pin can withstand in the horizontal direction, and observe the deformation and breaking phenomenon.

5.4.3.2 The sample installation shall be carried out according to No. 3.3 in Table 2. The loading method shall be slow loading.

5.4.4 Tensile strength test of connecting ears

5.4.4.1 Test and record the maximum tensile load that the connecting ear can withstand in the horizontal direction, and observe the deformation and breaking phenomenon.

5.4.4.2 The specimens shall be installed in accordance with No. 3.4 of Table 2, using the original design supporting bolts. The loading method is slow loading.

5.4.5 Tensile strength test of central groove support

5.4.5.1 Test and record the maximum bearing capacity of the central groove support under tensile load, and observe the deformation and damage phenomena.

5.4.5.2 The specimens shall be installed in accordance with No. 3.5 in Table 2. The loading method shall be slow loading.

5.5 Strength test of middle plate

5.5.1 Plate bending test

5.5.1.1 When the board is subjected to a vertical load during the test, observe and record the maximum load, and observe the deformation and damage.

5.5.1.2 The sample installation shall be carried out according to No. 4.1 in Table 2. The loading method shall be slow loading.

5.5.2 Middle plate arch test

5.5.2.1 When the plate is subjected to horizontal load during the test, observe and record the maximum load it can withstand, and observe the deformation and damage.

5.5.2.2 The specimens shall be installed in accordance with No. 4.2 in Table 2.The loading method shall be slowly loading until the middle plate is significantly deformed or damaged, and Record the amount of deformation and load at failure.

5.5.3 Non-axial loading test of mid plate

5.5.3.1 Test and record the maximum bearing capacity of the middle plate under eccentric load, and observe the deformation and damage.

5.5.3.2 The specimens shall be installed in accordance with No. 4.3 in Table 2 and the loading method shall be the same as specified in 5.3.4.

5.6 Central groove test

5.6.1 Groove compressive strength test

5.6.1.1 Test and record the maximum bearing capacity of the groove, and observe the deformation and damage.

5.6.1.2 The sample installation shall be carried out according to No. 5.1 in Table 2. The loading method shall be slow loading.

5.6.2 Groove upper non-axial loading test

5.6.2.1 Test and record the maximum load-bearing capacity of the grooves under non-axial loading, and observe the deformation and damage.

5.6.2.2 The specimens shall be installed in accordance with No. 5.2 in Table 2. The loading method shall be slow loading.

5.7 Compressive strength test of the middle groove bottom plate

5.7.1 Test and record the compression resistance of the bottom-sealed chute floor.

5.7.2 The sample installation shall be carried out according to No. 6 in Table 2. The loading method shall be slow loading.

5.8 Push-pull life test of middle groove

5.8.1 In the middle of the test, under the action of the push-pull force, record the number of push-pull times that the groove weld and the support can reach.

5.8.2 The sample installation shall be carried out according to No. 7 in Table 2. The hydraulic jack applies a rated push-pull cycle load to the central groove.

The number of cycles of deformation and open welding of the partial groove. When the specified number of cycles is reached, check whether the central groove is deformed or opened.

5.9 Coal Baffle (or Shovel) Horizontal Bend Test

5.9.1 When the coal blocking plate (or shovel plate) connected to the central groove is tested to be bent horizontally, observe and record its maximum bearing capacity and observe deformation and damage.

5.9.2 The sample installation shall be carried out according to No. 8 in Table 2. After fixing the coal blocking board (or coal shovel board) to the middle side of the groove. Loading method is slow load.

6 Test report

The type test report is submitted by the technical central unit or the testing unit with its consent. The technical central unit is valid after review and signing.

Appendix A

System diagram of middle tank test device (Reference) Note. 1-tank; 2-oil filter; 3-double stage vane pump; 4-AC motor; 5-two-position four-way solenoid valve; 6-cooler; 7-three-position four-way solenoid valve;

Relief valve; 0.6 ~ 8 MPa; 9-relief valve, 4 ~ 16 MPa; 10-remote pressure regulator; 0.6 ~ 8 MPa; 11-remote pressure regulator; 4 ~ 16 MPa; 12-One-way throttle valve; 13-manometer switch; 14-manometer, 16 MPa; 15-low pressure hose; 16- turbocharger, boost ratio 16; 17- hydraulic control check valve;

18-pressure gauge, 40 MPa; 19-temperature meter; 20-high pressure hose; 21-cylinder