This standard replaces ZB J84 008-87. This standard specifies the type and basic parameters, technical requirements, inspection rules, test methods and marking, packaging, transportation and storage of handheld rock drills. This standard applies to handheld rock drills powered by compressed air. JB/T 7301-1994 Handheld rock drill JB/T7301-1994 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 730194
Hand-held rock drill
Published on July 18, 1994
Ministry of Machinery Industry of the People's Republic of China
Implemented on July 1, 1995
Issued and published
Mechanical Industry Standard of the People's Republic of China
Hand-held rock drill
1 Subject content and scope of application
JB/T 730194
Replaces ZB J84 00B-87
This standard specifies the type and basic parameters, technical requirements, inspection rules, test methods and marking, packaging, transportation and storage of hand-held rock drills.
This standard applies to hand-held rock drills powered by compressed air. 2 Reference standards
GB5621
GB5898
GB6481
JB1590
JB/T1674
JB3576
JB/T4041
JB/T7161
JB/T7162
JB/T7163
JB/T7164
JB/T7165
JB/T7302
ZB J84.014
Performance test methods for rock drilling machinery and pneumatic tools Rock drilling machinery and pneumatic tools
Noise measurement methods
Engineering methods
Hollow hexagonal drill rods for rock drilling
Product model compilation methods for rock drilling machinery and pneumatic tools Air-leg rock drill
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
Rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
Rock drilling machinery and pneumatic tools
General technical conditions for rust prevention
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 forgingsbZxz.net
General technical conditions for machined parts
General technical conditions for assembly
General technical conditions for product packaging
General technical conditions for painting
Product quality grading inspection rules Types and basic parameters of hand-held rock drills
Product types are divided into the following types according to their functions:
Hand-held rock drills:
Hand-held wet rock drills:
Hand-held dust-collecting rock drills:
Hand-held underwater rock drills.
3.2 Basic parameters
3.2.1 The basic parameters of crystal production shall comply with the provisions of Table 1. Approved by the Ministry of Machinery Industry on July 18, 1994
Implementation on July 1, 1995
>10~22
r/rain
Impact energy
JB/T7301--94
Acceptance air pressure
Leiyanchong
Bottle hitting rate
305022~40
Noise (sound
Gas consumption
Power level)
≤114
3.2.2 The model compilation of the product shall comply with the provisions of JB1590. 4 Technical requirements
Gas consumption per meter of rock hole
8 or 13
16 or 19
4.1 The product shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. Water pipe
8 or 13
Manufacturer self-determined
Hexagonal pin tail
22×108 or
19×108
Hexagonal porch tail
22X×108 or
25×108
4.2 All parts (including purchased parts, collaborative parts, and standard parts) must be inspected and qualified by the quality inspection department before they can be assembled. The quality of investment molds and other parts shall comply with the provisions of JB/T7162. 4.3
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. The quality of machined parts shall comply with the provisions of JB/T7164. The assembly quality of products shall comply with the provisions of JB/T7165. The cleanliness of products shall comply with the provisions of Table 2.
Product Series
Cleanliness
4.9 For products of the same model, their parts and components shall meet the requirements of interchangeability. 4.10 The anti-rust quality of products shall comply with the provisions of Article 6.4 of JB3576. 4.11 The quality of product painting shall comply with the provisions of Article 3.6 of ZBJ84014. 5 Inspection rules
≤600
5.1 Products must be inspected and qualified by the quality inspection department of the manufacturer and accompanied by technical documents of qualified product quality before they can leave the factory mg
5.2 Product factory inspection shall be carried out in accordance with the inspection specifications formulated by the manufacturer based on specific products, but the rock drilling impact frequency and dense rock gas consumption index values ​​shall be equivalent to those specified in Table 1.
5.3 Product cleanliness is allowed to be sampled, but it shall be inspected at least once a month. 5.4 The idling speed, impact energy, gas consumption per meter of rock hole, hole depth, and noise index values ​​of the products specified in this standard. Under the premise of having a valid type inspection report, the following are allowed as factory inspection items. 5.5 The product shall be subject to type inspection in the following cases: 2
JB/T7301-94
New products developed (including old products transferred to the factory for production); when there are major changes in the design, process and selected materials of the product; when the product resumes production after a long period of suspension; once every five years for products produced in batches or in large quantities. 5.6 Products subject to type inspection shall be randomly sampled from the qualified products. 5.7 Product sampling rules shall be carried out in accordance with the sampling plan specified in JB/SQ7.3 6 Test methods
6.1 When the product is in the idle state, check that no leakage is allowed at each connection. The operation should be normal. 6.2 Product type inspection shall comply with the provisions of GB5621. 6.3 Product noise measurement shall be carried out in accordance with the provisions of GB5898. 6.4 Product cleanliness inspection shall be carried out in accordance with the provisions of JB/T4041. 6.5 The gas consumption per meter of rock hole of the product shall be inspected in accordance with the conditions specified in Appendix A (supplement). 7
Marking, packaging, transportation and storage
Each product should have the following markings:
Manufacturer name or factory logo:
Product model:
Product number:
Year and month of product manufacturing.
7.2The packaging of the product should comply with the provisions of JB/T7302. 7.3The following documents should be attached to the product packaging:
a, Packing list:
Product certificate
Product use and maintenance instructions.
7.4The product should be waterproof, moisture-proof and exposed to the sun during transportation and storage. A1
JB/T730194
Appendix A
Gas consumption per meter rock hole inspection cable
(supplement)
The gas consumption per meter rock hole inspection conditions of the product are: a.
Acceptance air pressure: 0.4MPa
Rock compressive strength: 80~120MPa;
Drill bit type and diameter are shown in Table A1:
The drill rod should comply with the provisions of GB6481;
Hand-held by humans, working downwards.
Product series
Needle diameter
Drill bit type
+20~34
Slotted, cross or column tooth
This inspection condition is also applicable to the product's parts service life and product reliability test verification, A2
Additional instructions:
This standard is proposed and managed by Tianshui Rock Drilling Machinery Pneumatic Tool Research Institute. This standard was drafted by Tianshui Pneumatic Tool Factory, and the main drafter of this standard is Zhu Zhongrong,
#36~42
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