JB/T 1674-1994 Air-leg rock drill JB/T1674-1994 standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 1674--94
Air-leg rock drill
Published on July 18, 1994
Ministry of Machinery Industry of the People's Republic of China
Implemented on July 1, 1995
Mechanical Industry Standard of the People's Republic of China
Air-leg rock drill
1 Subject content and scope of application
JB/T 1674-94
Replaces JB1674-86
This standard specifies the type and basic parameters, technical requirements, inspection rules, test methods and marking, packaging, transportation and storage of air-leg rock drills.
This standard applies to air-leg rock drills powered by compressed air. 2 Reference standards
GB 5621
GB5898
GB 6481
JB1590
JB3576
JB/T 4041
JB/T 7162
JB/T 7163
JB/T 7164
JB/T 7165
JB/T 7302
ZB J84 014
JB/SQ 3. 3
Performance test methods for rock drilling machinery and pneumatic toolsNoise measurement methods for rock drilling machinery and pneumatic toolsEngineering methodHollow hexagonal drill rods for rock drilling
Product model compilation method for rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
General technical conditions for rust prevention
General test method for product cleanliness
Rock drilling machinery and pneumatic tools
General technical conditions for heat-treated parts
Rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
General technical conditions for structural steel investment castings General technical conditions for steel die forgings
Rock drilling machinery and pneumatic tools
General technical conditions for machined parts
Rock drilling machinery and pneumatic tools
General technical conditions for assembly
Rock drilling machinery and pneumatic tools
General technical conditions for product packaging
General technical conditions for painting of rock drilling machinery and pneumatic tools Rules for product quality grading and inspection of air-leg rock drills 3 Types and basic parameters
3.1 Types
Air-leg rock drills are divided into the following types according to their characteristics: a. air-leg rock drill (basic type); b. air-leg high-frequency rock drill; c. air-leg dust-collecting rock drill.
3.2 Basic parameters
3.2.1 The basic parameters of the air-leg rock drill are shown in Table 1. 3.2.2 For specific products, the rock drilling impact frequency should be specified with upper and lower limits, and the difference should not exceed 3Hz. 3.3 Product models shall be compiled in accordance with the provisions of JB1590. Approved by the Ministry of Machinery Industry on July 18, 1994
Implementation on July 1, 1995
1 r/min
>22～25
4 Technical requirements
Impact energy
JB/T 1674 - 94
Acceptance air pressure
Rock drilling impact
0.63 MPa v
Noise (sound
frequency gas consumption power level)
30～50
≤125
per meter rock hole
gas consumptionbzxz.net
≤12611×103
≤127
19 or 25
4.1The product shall comply with the provisions of this standard and be manufactured in accordance with the product drawings and technical documents approved by the prescribed procedures. Shank
Hexagonal Shank
22×108 or
19×108
Hexagonal Shank
22×108 or
25×108
4.2All parts (including purchased parts, cooperative parts, and standard parts) must be inspected and qualified by the quality inspection department before they can be assembled. 4.3 The quality of investment castings shall comply with the provisions of JB/T7162. 4.4 The quality of steel die forgings shall comply with the provisions of JB/T7163. 4.5 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. 4.7 The assembly quality of products shall comply with the provisions of JB/T7165. 4.8 The assembly of products shall be complete and correct, and the operation shall be flexible and reliable. The parts and components of the products shall meet the requirements of interchangeability. 4.9
The product shall operate normally under normal lubrication conditions, and all performance indicators shall meet the requirements of Table 1. 4.11
The quality of product painting shall comply with the provisions of Article 3.6 of ZBJ84014. The anti-rust quality of products shall comply with the provisions of Article 6.4 of JB3576. 4.13 The cleanliness of products shall meet the requirements of Table 2. Table 2
Product Series
Cleanliness
5 Inspection Rules
5.1 Products must be inspected and qualified by the quality inspection department of the manufacturer and accompanied by technical documents proving the quality of the products before they can leave the factory. 5.2 Before the test, the assembly quality of the products should meet the requirements of Article 4.8. mg
5.3 For product factory inspection, the manufacturer shall formulate inspection specifications based on specific products, and shall ensure that the rock drilling impact frequency and rock drilling gas consumption are equivalent to those specified in Table 1.
S.4 Product cleanliness is inspected once a month.
5.5 Noise, impact energy, idling speed, and drilling depth specified in this standard are not allowed to be included in the factory inspection items under the premise of having a valid type inspection report.
5.6 Products should be type inspected in the following cases: a. New products developed (including old products transferred to the factory) JB/T1674-94
b. When there are major changes in the design, process and materials used in the product; c. When the product is resumed after a long period of suspension; for products produced in batches or in large quantities, it shall be conducted every five years. d.
5.7 Products subject to type inspection shall be randomly selected from the qualified products. 5.8 When sampling and inspecting product quality, the sampling plan specified in JB/SQ3.3 shall be followed. 6 Test method
When the product is in the idle running state, check that there shall be no air leakage at each connection and the operation shall be normal. 6.11
6.2 Product type inspection shall be conducted in accordance with the provisions of GB5621. 6.3 Product noise measurement shall be conducted in accordance with the provisions of GB5898. Product cleanliness inspection shall be conducted in accordance with the provisions of JB/T4041. 6.4
The gas consumption per meter of rock hole of the product shall be inspected in accordance with the conditions specified in Appendix A (Supplement). 6.5
7 Marking, packaging, transportation and storage
Each product should be marked with the following contents:7.14
Manufacturer name or factory logo;
Product model;
Product number;
Year and month of manufacturing.
7.2The quality of product packaging should comply with the provisions of JB/T7302. 7.3The following technical documents should be attached to the product packaging box:a.
Packing list;
Product certificate;
Product use and maintenance instructions.
7.4The product should be waterproof, moisture-proof and sun-proof during transportation and storage. 3
Acceptance air pressure: 0.63MPa.
JB/T1674 - 94
Appendix A
Test conditions for gas consumption per meter of rock hole
(Supplement)
A2 Working state: horizontal rock drilling on the drilling vehicle, select the optimal propulsion force. A3 Rock compressive strength: 100～140MPa. A4 Drill head type and diameter: - shape, 40 mm. A5 Drill rod should comply with the provisions of GB6481.
This test condition is also applicable to the product's parts service life and product reliability test verification. A6
Additional instructions:
This standard was proposed and managed by Tianshui Rock Drilling Machinery Pneumatic Tool Research Institute. This standard was drafted by Shenyang Pneumatic Tool Factory. The main drafter of this standard is Wang Chuanwen.
This standard was first published in 1975.
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