This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of hand-held internal combustion rock drills. JB/T 7171-1993 Hand-held internal combustion rock drills JB/T7171-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T7171-93
Hand-held internal combustion rock drill
Published on November 21, 1993
Ministry of Machinery Industry of the People's Republic of China
Implemented on March 1, 1994
Mechanical Industry Standard of the People's Republic of China
Hand-held internal combustion rock drill
Subject content and scope of application
JB/T 717193
JB2905-85
ZBJ8400186
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of hand-held internal combustion rock drills. This standard applies to hand-held internal combustion rock drills (hereinafter referred to as products). 2 Reference standards
GB5621
GB5898
JB1590
JB3576
JB3904
JB3906
JB4041
JB/T7161
JB/T7162
JB/T7163
JB/T7164| |tt||ZBJ84013
Type and basic parameters
3.1 Type
Rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
Leiyan machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools||tt| |Rock Drilling Machinery and Pneumatic Tools
Rock Drilling Machinery and Pneumatic Tools
Rock Drilling Machinery and Pneumatic Tools
Rock Drilling Machinery and Pneumatic Tools
Performance Test Method
Noise Measurement Method - Engineering Method
Product Model Compilation Methodwww.bzxz.net
General Technical Conditions for Rust Prevention
General Technical Conditions for Metal and Sand Mold Castings of Aluminum AlloysGeneral Technical Conditions for Magnesium Alloy Castings
General Test Method for Product Cleanliness
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
General Technical Conditions for Product Packaging
This series of products are hand-held internal combustion rock drills powered by gasoline engines. 3.2 Model Indication Method
Product model compilation shall comply with the provisions of JB1550. 3.3 Basic Parameters
Basic parameters and dimensions shall comply with the provisions of Table 1. Basic Parameters
This parameter
Engine Cylinder Diameter
Engine Load Speed
Impact Energy
Drill Rod Idle Speed
Approved by the Ministry of Machinery Industry on 1993-11-21
2600~2900
≥180
24003000
2700~3000
Implemented on 1994-03-01||t t||Dense hole speed
Fuel consumption
Drilling depth
Specification sXI
Technical requirements
mm/min
JB/T7171-93
Continued Table 1
Basic parameters
≤105
22×108
Products shall comply with the requirements of this standard and be manufactured according to drawings and technical documents approved by the prescribed procedures. The quality of aluminum alloy castings shall comply with the provisions of JB3904. The quality of magnesium alloy castings shall comply with the provisions of JB3906. The quality of molten steel castings shall comply with the provisions of JB/T7162. The quality of steel die forgings shall comply with the provisions of JB/T7163. The quality of heat-treated parts shall comply with the provisions of JB/T7161: 4.6
The quality of machined parts shall comply with the provisions of JB/T7164. All parts (including external components, outsourced parts and standard parts) must be inspected and qualified by the quality inspection department of the manufacturer before they can be installed. Before assembling the product, all parts should be cleaned and the operation should be flexible and reliable after assembly. The product anti-rust should comply with the provisions of JB3576. The product appearance is neat and the color is uniform.
The product cleanliness index is not more than 400mg.
The service life of main wearing parts is shown in Table 2.
Table 2 Service life of main wearing parts
Part name
Impact piston
Up wheel
Rotation
Assessment index\
Note: 1) Assessment index is cumulative footage,
Test method
Degree limit
Impact end face return 1.5
Spline side wear 1.5
Spline chain surface wear 1.5
Inner diameter side wear 1.5
5.1 Product performance test is carried out in accordance with the provisions of GB5621. 5.2 Product cleanliness test is carried out in accordance with the provisions of JB4041. 5.3 Product noise measurement shall be carried out in accordance with the provisions of GB5898. 6
Inspection rules
6.1 Factory inspection
Measure the total length at the impact surface diameter of 18mm
Measure the average value of the distance from the impact end face 12mm and the working height of each tooth at 1/2
Measure the average value of the face grinding report at 15mm from the end face 6.1.1 Before leaving the factory, the product performance shall be inspected in two ways: on-site rock drilling and simulation test bench detection (see Table 3). 2
Inspection method||tt| |Method—,
On-site test
Simulation test bench
Test items
Engine load speed
Curve
mm/min
Idle speed
Fuel consumption
Engine load speed
Exhaust pressure
Engine load speed
Thunderbolt speed
mm/min
Idle speed
Fuel consumption
JB/T 717193
Items for factory inspection
Equipment and instruments
Mechanical tachometer or electromagnetic counter
Stopwatch, tape measure
Mechanical tachometer or photoelectric counter
Internal combustion engine remote test bench,
Monitor
Powder discharge pressure measuring instrument
Same as method 1
Same as method 1
Same as method 1
An appearance inspection shall be carried out before factory inspection, and shall comply with the provisions of Article 4.11. 6.2 Type inspection
Type inspection shall be carried out when the product has any of the following conditions: New trial products:
When mass production, it shall be carried out no more than once every 5 years: When the product is discontinued for more than 3 years and then produced again;
When there are major changes in the structure, materials, and process methods of the product. Test method
When the rock crusher is running stably at full load, use a tachometer or counter to measure
The head is 34mm in shape, the length of the fiber rod is 600mm, and holes are left on the rock with a hardness of f=8~12. Calculate the average value of 5 holes
Use the winding method to measure the number of revolutions per minute or use a photoelectric counter to measure
When measuring the hole speed, use the volumetric method to measure the fuel consumption per meter
On the test bench, adjust to the optimal speed and stabilize it (about 1min), run it continuously for 5min, and then stop Machine, print out the engine load speed
Start and adjust to the optimal speed, then insert the machine into the discharge pressure measuring device to measure the powder discharge pressure, the value is not less than 0.06·MPa
Same method—
Same method one
Same method one
Weekly method one
Products for type inspection should be sampled from the qualified products, with a sample of no less than 5 units (no less than 20 units in stock). When any performance parameter in the sample is unqualified, a second sample should be taken, and another 5 units should be taken. If there are still unqualified ones, this batch of products is unqualified. 6.2. 3
Type inspection items
Impact energy:
Drill rod idling speed:
Engine load speed;
Drilling speed:
Fuel consumption;
f.Noise,
&Drilling depth;
h.Cleanliness.
JB/T7171-93
The inspection data shall comply with the provisions of Table 1 and Article 4.12. 6.2.4 Life of main wearing parts, 2 samples can be selected for life test, or the user certificate can be used as the assessment basis (valid for 5 years) should comply with the provisions of Table 2,
7 Marking, packaging, transportation and storage
7.1 Product label
The following content should be marked on the product label:
Manufacturer name:
Product model and name:
Product number:
Manufacturing year and month.
7.2 Product packaging
Packaging.
Product packaging should comply with the provisions of ZBJ84013. Before packaging, the product surface should be cleaned and the exposed surface of steel parts should be coated with rust inhibitor. The products should be packed in plastic bags before packing: Spare parts must be treated with corrosion and rust prevention, and electrical components, seals and disassembly and assembly tools should be separately 7.2.4
The technical documents accompanying the product packing should include: a.
Packing list;
Product certificate;
Product instruction manual.
7.3 Product transportation and storage
7.3.1 The product should be waterproof and moisture-proof during transportation. 7.3.2 The product should be stored in a dry and ventilated place.
Additional instructions:
This standard was proposed and managed by the Tianshui Rock Drilling Machinery and Pneumatic Tools Research Institute of the Ministry of Machinery Industry. This standard was drafted by Yichun Pneumatic Tools Factory, Shanghai Pneumatic Tools Factory, Luoyang Pneumatic Tools Factory and Chongqing Rock Drilling Machine Factory. The main drafters of this standard are Li Chunxiu, Cai Shuyou, Wu Liufu and Li Hongbin.
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