JB/T 7169-1993 General technical specifications for rail-type hydraulic rock drills
Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T716993
Guide-type hydraulic rock drill
General technical conditions
Issued on November 21, 1993
Ministry of Machinery Industry of the People's Republic of China
Implementation on March 1, 1994
Machinery Industry Standard of the People's Republic of China
Guide-type hydraulic rock drill
General technical conditions
1 Subject content and scope of application
JB/T716993
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of guide-type hydraulic rock drills. This standard applies to rail-type hydraulic rock drills. 2 Reference standards
GB2828
GB5621
GB5898
GB7935
JB3576
JB/T7161
JB/T7162
JB/T7163
JB/T7164
ZBJ84 013
ZBJ84014
3 Technical requirements
Batch inspection counting sampling procedures and sampling tables (applicable to continuous batch inspection) Size series and tolerances of O-type rubber seals for hydraulic and pneumatic use Rock drilling machinery and pneumatic tools
Performance test methods
Rock drilling machinery and pneumatic tools
Noise measurement methods
Engineering methods
General technical conditions for wave pressure elements
Rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
Save-cutting machines Machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
General technical conditions for rust prevention
General technical conditions for heat-treated parts
General technical conditions for structural steel investment castings
General technical conditions for steel die forgings
General technical conditions for machined parts
Rock drilling machinery and pneumatic tools
General technical conditions for product packaging
Rock drilling machinery and pneumatic tools
General technical conditions for painting
3.1 The product shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 3.2 The working pressure (oil, gas, water) of the product shall comply with the design requirements. 3.3 The product shall be drilled with the help of the propulsion device of the rock drilling equipment (car, frame), and the structure of the rock drilling equipment shall ensure that the product can operate reliably under normal conditions.
The parts of the same model product shall be interchangeable. All joints of the product should be tight, and there should be no oil stagnation. Under the specified working pressure, the product should be able to start and operate normally. 3.5
The working oil temperature (tank temperature) of the product shall not be higher than 60℃. The product accumulator is filled with inert gas, and the filling pressure of the high-pressure accumulator is 40% to 50% of the working oil pressure. The service life of the main parts of the product shall comply with the provisions of Articles 3.8.1 and 3.8.2. 3.8
The service life of the piston: the internal rotary type is not less than 5000m. The independent rotary type is not less than 10000m. The life of the accumulator diaphragm is not less than 1500m.
3.9When there are no special requirements in the product drawings and technical documents, the machined parts shall comply with the provisions of JB/T7164. 3.10
The quality of structural steel investment mold parts shall comply with the provisions of JB/T7162. The quality of steel die forgings shall comply with the provisions of JB/T7163. Heat-treated parts shall comply with the provisions of JB/T7161 when there are no special requirements in product drawings and technical documents. For welded parts that directly bear high pressure, welding quality requirements shall be put forward in product drawings or technical documents. Approved by the Ministry of Machinery Industry on November 21, 1993
Implementation on March 1, 1994
JB/T 7169--93
3.14 Product surface painting shall comply with the provisions of ZBJ84014. 3.15 Product anti-rust shall comply with the provisions of JB3576. 3.16 The O-ring seal used in the product shall comply with the provisions of GB3452.1 when there are no special requirements for the structural dimensions. 3.17 Parts that directly bear high pressure shall be subjected to pressure resistance test. 3.18 All parts (including outsourced parts) must be inspected and qualified by the factory quality inspection department, and purchased parts must have qualified certification documents before they can be assembled. Purchased hydraulic components must comply with the provisions of GB7935. 3.19 There should be obvious and permanent functional markings at the joints of the oil inlet and return ports of the product: P-1—Oil inlet port
T—Oil port. Products with impact and rotary oil inlet and return ports can be marked with the following corners at the rotary oil inlet and return ports, i.e., P-1 and T-1 for rotary oil inlet and return ports. 3.20 The cleanliness of the product shall comply with the provisions of the relevant technical documents. 3.21 The pressure oil entering the product must be filtered. Its solid dirt code shall meet the design requirements, but shall not be less than 19/16 (see Appendix C (reference)>.
3.22 When the product is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall be responsible for repairing or replacing it for the user. 4 Test methods and inspection rules
4.1 The pressure test of parts shall be carried out in accordance with the provisions of Articles 4.1.1 to 4.1.3. 4.1.1 The test pressure shall not be less than 1.5 times the working pressure. 4.1.2 The pressure test time shall not be less than 1min.
4.1.3 The pressure test shall be carried out after the parts are completed but before assembly. 4.2 Each product shall be inspected by the factory quality inspection department. The products can leave the factory only after they have passed the door inspection. The products leaving the factory should be accompanied by documents proving that the product quality is qualified. 4.3 There are two types of product factory tests: mandatory tests and random tests. The test items are specified by relevant technical documents. The sampling plan, sampling procedure and judgment rules of the random test should comply with the provisions of GB2828.
4.4 Before the test, the product should run idly at 1/2 of the working pressure. The time should be no less than 3 minutes for the internal rotary type and no less than 2 minutes for the independent rotary type.
4.5 The product performance test method shall be in accordance with the provisions of GB5621. 4.6 The product noise measurement method shall be in accordance with the provisions of GB5898. The detection method of hydraulic oil cleanliness shall be carried out according to the particle counting method. The particle counting method is shown in Appendix A (supplement). 4.7
4.8 Detection of product cleanliness The method is based on the weighing method. The weighing method is shown in Appendix B (supplement). 4.9 The measuring instrument for circulating oil consumption (flow) should be able to withstand a working pressure of 1.2L, and its internal structure should be able to withstand the impact of pulsating oil pressure. Its accuracy shall not be less than 2%.
4.10 In principle, the flow measurement point should be placed on the high-pressure side of the product being measured. The factory test can also place the measurement point on the low-pressure side of the product being measured, but it must be calibrated with the high-pressure side.
5 Type test
5.1 The product should be type tested in one of the following situations: new trial products (including products transferred to the factory); a.
b. When there are major changes in the product structure, process or materials used; when production is resumed after being discontinued for more than 2 years;
d. Every year for products in normal production It is conducted every 3 to 5 years. 5.2 The type test shall be conducted on no less than 2 prototypes. If one of them fails in one item, the test shall be repeated twice. If one of them still fails in one item, it shall be considered as unqualified.
6 Marking, packaging, transportation and storage
6.1 Each product shall be clearly marked with
product model and name;
factory logo or factory name,
product number:
production date.
JB/T-7169-93
6.2 Before packing each product, each interface (oil, gas, water) shall be sealed with plastic or copper sealing plugs. Cotton yarn, plastic cloth, paper and other materials are not allowed to be used for sealing.
6.3 Product packaging shall comply with the provisions of ZBJ84013. 6.4 The following documents should be attached when the product is packed: 8. Packing list;
b. Product certificate:
Product instruction manual;
6.5 The product shall not be corroded by rain during transportation and storage. The product shall be stored in a cool and dry warehouse and shall not be stored in the open air. JB/T7169-.93
Appendix A
Hydraulic oil cleanliness test method - particle counting method (supplement)
This appendix refers to the National Machinery Commission General Bureau Hydraulic Component Internal Cleanliness Test Method Part 1 Particle Counting Method". A1 Principle
The oil flowing through the product is filtered through a filter membrane by vacuum filtration, so that the dirt is collected on the surface of the filter membrane, and then the membrane is placed between two glass slides and tested under transmitted light (or incident light) with a microscope. The size is determined by the maximum diameter of the particles. Count them to determine the cleanliness level of the oil. A2 Terminology
A2.1 Square Area
The area of the filter membrane with a side length of 3.08 mm. A2.2 Effective area
The area of the filter membrane through which the wave passes when filtering liquid. A2.3 Unit areawww.bzxz.net
The area enclosed by two adjacent longitudinal filter grid lines on the horizontal plane of the filter membrane and by two parallel lines drawn on the microscope helioscope micrometer or on the projection screen on the vertical plane. The size of the unit area is measured by a pre-calibrated eyepiece micrometer and is approximately 1/6 of the grid area (see Figure A1). A2.4 Subunit area
Defined as alternately with A2.3, the size is approximately 1/20 of the grid area (see Figure A1). 3. 08
A2.5 Particle size
Unit area
Subunit area
02/80g-
If the particle is larger than the first and second lines of the counting range determined by the line width on the eyepiece micrometer but not larger than the first and third line widths, it is within the counting range. If it is smaller than the width between the first and second lines or larger than the width between the first and third lines, it will not be counted. Note: The first and second lines define the minimum size within the effective range, while the first and third lines define the maximum size within the effective range. A2.6 Fiber
Particles with a length greater than 100μm and an aspect ratio of not less than 10:1. A2.7 Calculation coefficient
Ratio of effective area to total counting area.
JB/T 7169--93
A2.8 Blank count
The total number of contaminated particles brought by reagents, glassware blood purification, etc. is called blank count. The blank count shall generally not be greater than 1000 (size greater than 5m). Before analyzing the sample, the liquid sample must meet this standard. A3 Equipment and Materials
A3.1 A set of sand core filter mobile device, including: a. A glass round simple funnel with a scale of 250mL; b. A holder clamp;
c. A gasket with a glass sand core plate suitable for installing the filter membrane: d. A conical funnel.
A3.2 A funnel cover (can be replaced by culture medium). A3.3 Two types of filter membranes.
A3.3.1 A microporous filter membrane with a diameter of not less than Φ50mm, white, engraved with squares, and a pore size of 0.8μm. The side length of each square is 3.08mm.
A3.3.2 A filter membrane with a diameter of not less than Φ50mm, a pore size of 0.45um, and no squares. A3.4 A vacuum bottle with a volume of 1L for suction filtration. A3.5. One evacuation device with a vacuum degree of 87.72 kPa (i.e. 658 mm Hg) A3.6 One filter solvent dispenser (a pressure operating system that discharges solvent through a filter membrane with a pore size of no more than 1.2 um, which can be replaced by a syringe).
One stainless steel toothless flat saw.
Several microscope glass slides.
Several microscope glass cover slips.
One oven with a temperature controllable at 80°C
One contamination detection microscope. The recommended commonly used magnifications and optical combinations are shown in Table A1. Table A1 Common magnifications and optical combinations
Major magnifications
Note: It is best to use a microscope with a large eyepiece and a rotating large stand with a projection screen, and an objective micrometer with a scale of 0.1 mm and 0.01 mm A3.12
One hand-held counter.
One blood cell differential counter
Several sampling bottles with a volume of 250mL, wide mouth and stopper-shaped bottle caps.
Several plastic films placed between the bottle cap and the bottle mouth and several suitable lids. One 150mL measuring cylinder.
A4 Chemicals for cleaning and purification
A4.1 Liquid detergent without solid residue. A4.2 Distilled water or demineralized water.
A4.3 Isopropyl alcohol (without acetone) or anhydrous ethanol. A4.4 Petroleum aldehyde (boiling range of 90-120℃). A5 Procedure for cleaning containers
JB/F716993
Filter devices, sampling bottles, glass slides, cover slides, volumetric cylinders and other utensils should be cleaned according to the following requirements. A5.1 Wash the glassware in a mixture of warm water and liquid detergent. Note: If there is oil on the glassware, rinse it with petroleum ether first. A5.2 Rinse with tap water.
A5.3 Rinse with distilled water or demineralized water. A5.4 Rinse with isopropyl alcohol or anhydrous ethanol filtered through a 0.45um filter membrane to remove moisture. A5.5 Rinse with petroleum aldehyde filtered through a 0.45um filter membrane. A5.6 Filter device: The stagnation bucket should be turned upside down to allow the solvent to drip and evaporate. A5.7 Sampling bottle: There should be a small amount of solvent remaining in the bottle. Place a plastic film (cleaned with filtered solvent) or a suitable stopper between the bottle mouth and the lid. The evaporation of the solvent creates a positive pressure in the bottle to prevent contamination when the bottle cap is opened. A6 Sampling
A6.1 Sampling at the downstream pressure measuring point of the measured element. If the element has a leak, install a sampling reader at the 5d position of the leak line at the same time. A6.2 The sampling valve should be permanently installed on the pipeline or replaced by a quick connector. A6.3 Turn on the power, start the test bench, and purify the oil in the test bench system. Note: Do not install the product to be tested at this time, and use the hungry plate to form a loop. A6.4 Remove the dust cover at the pressure measurement point and the sampling port of the leaking pipeline, open the sampling valve, and after at least 200mL of oil flows out, use a sampling bottle to collect 1 bottle of oil sample each. The volume should not exceed 75% of the volume of the sampling bottle, but not less than 50%. A6.5 Remove the sampling bottle, close the sampling valve, and cover the dust cover. A6.6 Perform a cleanliness test on the test bench oil. The cleanliness level of the test bench oil must be at least one level higher than the cleanliness level of the product to be manufactured, otherwise the steps of A6.3 to A6.6 should be repeated until the requirements are met. A6.7 Remove the transition plate on the test bench and install the product to be tested. A6.8 Remove the dust cover, start the test bench, and take samples at the downstream pressure measurement point. Take one oil sample at 2-3 seconds and 5 minutes, and take three more oil samples at random within these 5 minutes. At the same time, take samples at the sampling port of the discharge pipe, and take one bottle of oil sample starting after 1 second. Among the 6 bottles of oil samples, the oil sample with the largest particle count value is used as the cleanliness level of the product to be tested. The sampling volume of each bottle shall not exceed 75% of the volume of the sampling bottle, but not less than 50%.
A6.9 Remove the sampling bottle, close the sampling valve, and cover the dust cover. A7 Oil sample processing
A7.1 Use a clean clamp to pick up a filter membrane with a nominal aperture of 0.8um, place it in the center of the screen of the funnel seat assembly, with the grid facing up, carefully install the stagnation funnel and clamp it in place, cover the funnel cover, A7.2 Record all the details of the liquid sample. A7.3 Use petroleum aldehyde filtered through a 0.45μm filter membrane as a cleaning liquid to clean the outer cover of the sample bottle. A7.4 Shake the bottle vigorously for at least 1 minute, remove the bottle cap and plastic film (if equipped with a film). Place 100mL of oil sample in a 150mL volumetric flask.
A7.5 Connect the side nozzle of the vacuum bottle to a vacuum source. Pour all the oil in the volumetric flask into the funnel. Pour 30~50mL of filtered petroleum aldehyde into the volumetric flask to wash off the oil on the inner wall. Turn on the vacuum pump. When the oil in the funnel is reduced to a small volume, use a syringe to draw 30mL of filtered petroleum aldehyde to wash along the wall of the funnel. Be careful not to disturb the distribution of pollutant particles on the filter membrane. Drain the oil sample, cut off the power supply of the vacuum pump, and cover the funnel. A7.6 Loosen the clamp of the retaining frame and remove the filter membrane with a needle. Place it on a glass slide with the contaminated surface facing upwards. Make the filter grid parallel to the edge of the glass slide.
JB/T7169-93
A7.7 Cover with a glass cover and fix the points with transparent tape appropriately. Attach the identification mark. Only then can it be directly placed under the microscope for inspection. A8
Microscope calibration
Use a table micrometer to calibrate the microscope to measure particle size at the following magnifications: 100×: 200×: 400×.
When replacing optical components, the microscope should be re-checked and calibrated. Particle counting and measurement steps
A9.1 Particle classification
Particles are classified according to the following size ranges:>5~15μm
>15~25um
>25~50μm
>50~100μm
A9.2 Selection of microscope magnification
Based on the counting size range, refer to Table A2 and select the microscope magnification. Table A2 Counting size range and magnification
Size range
>15~25
>25~50
>50~100
Note: If necessary. 5~15μm can be further divided into 5~10μm and 10~15μm. A9.3 Counting
A9.3.1 Adjust the eyepiece to the area to be measured. Nominal magnification effect
200~400×
160~200×
100~200×
A9.3.2 Count the number of particles in a unit area in any square (3.08mm×3.08mm). The unit area is in accordance with the provisions of A2.3, and the number of particles is classified and counted in accordance with A9.1. And the statistical area is determined according to the following five situations: a.
If the number of particles is equal to zero, count the particles of the entire effective area; if the number of particles is greater than zero and not greater than 2, count the particles of 20 squares (see Figure A2a); if the number of particles is greater than 2 and not greater than 8, count the particles of 10 squares (see Figure A2b); if the number of particles is greater than 8 and not greater than 50, count the particles of 10 unit areas; if the number of particles is greater than 50, count the particles of 10 sub-unit areas. A9.3.3 Counting method, as shown in Figure A2, A9.3.4 Repeat the above steps for each particle size range measured. 7
A9.4 Calculate the total number
JB/T7169--93
The total number is obtained by multiplying the calculation coefficient CF by the number of all particles in a certain size range on the measured statistical area. The calculation coefficient CF is calculated according to formula (A1) to formula (A3):
When measuring a square grid:
When measuring a unit area:
When measuring a subunit area:
Where D-
The diameter of the effective area of the filter membrane, mm;
CF3.1416D:
CF=3.1416D
CF3.1416D
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