This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of the original sand sampler. This standard applies to the soil samplers for taking the original soil samples of the first-grade quality of fluid plastic, soft plastic, plastic, silt, silt sand and the first-grade quality of fluid plastic, soft plastic, plastic, silt, silt sand and the second-grade quality of fluid plastic and soft plastic in the borehole as specified in GB 50021 and JG J89. JG/T 5061.2-1995 Open Thin-walled Soil Sampler JG/T5061.2-1995 Standard download decompression password: www.bzxz.net

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Construction Industry Standard of the People's Republic of China JG/T5061.2—1995
Thin-walled soil sampler
Open end sampler
Published on January 5, 1996
Implementation on June 1, 1996
Ministry of Construction of the People's Republic of China
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Construction Industry Standard of the People's Republic of China Thin-walled soil sampler
Open end sampler
Subject Content and Scope of Application
JG/T5061.2—1995
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of loose-mouth thin-walled soil samplers.
This standard applies to soil sampling devices for taking partial fluid plastic, soft plastic, plastic, silt, silt sand first-grade quality and fluid plastic, soft plastic second-grade quality undisturbed soil samples in boreholes as specified in GB50021 and JGJ89. 2
Referenced standards
GB5936Test method for chemical protective layer of ferrous metals in light industrial products: immersion drop method GB5002IYanwang Engineering Investigation Specification
JGJ89Technical standard for undisturbed soil sampling
DZ25Lock joint for geological drilling drill pipe
JG/T5012General technical conditions for packaging of construction machinery and equipment 3
Product classification
Main parameters and size series
Number of thin-walled soil sampling devices take the outer diameter of the sample tube as the main parameter, such as 50mm; 75mm; 100mm.
3.2Structure
See Figure 1.
3.3 Model
1—Spring pin; 2—Reducing joint 3—Steel ball 4—Screw; 5—Thin-walled sampling tube The model of the loose-mouthed thin-walled soil sampler consists of the model code and main parameters. 3.3.1 Model compilation method
Approved by the Ministry of Construction of the People's Republic of China on 199601-05 and implemented on 1996-06-01
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3.3.2 Marking example
Update, variant code, expressed in the order of Chinese phonetic letters (uppercase print) Main parameters: Sampling tube outer diameter, mm
Soil sampler
Sampling tube outer diameter 75mm loose-mouthed piston thin-walled soil sampler: Soil sampler TB75JG/T5061.2
3.4 ​​Basic parameters
Basic parameters should comply with the provisions of Table 1.
Area ratio, %
3.4.1 Area ratio (Ar), calculated according to formula (1). Where: Dw-sampling tube outer diameter, mm
D-sampling tube cutting edge inner diameter, mm.
3.4.2 Internal clearance ratio (Ci) calculated according to formula (2). -sampling tube inner diameter, mm
Where: Ds-
4 Technical requirements
Internal clearance ratio, %
Sampling tube length, mm
700, 1000
4.1 Products shall be manufactured according to drawings and technical documents approved in prescribed procedures. 4.2 The main parameters and basic parameters shall comply with the provisions of 3.1 and 3.4. X100%
Blade angle, ()
4.3 The sampling tube shall be made of cold-drawn seamless steel tube with mechanical properties not less than 20, and its outer diameter deviation shall be less than 1%. Other dimensional deviations shall comply with the provisions of Table 2.
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Opening day inner diameter
Straightness
4.4 Thread tolerance and technical requirements shall be implemented in accordance with DZ25. Table 2
The surface of the earth sampler shall be treated with anti-rust treatment, such as bluing or blackening, and the color shall be uniform. 4.5
The sampling tube shall have no obvious defects such as extrusion, depression, oblateness, etc., and the inner wall roughness shall not be less than Ra3.2. The cross-sectional area of ​​the drainage channel of the earth sampler head shall not be less than 7.5% of the inner diameter area of ​​the blade, and the internal mud and water shall be discharged smoothly. 5 Test method
The special sampling tube is placed on two V-shaped blocks on a level 3 flat plate with a size of 1.2m×1.0m and not less than 1.2m. The outer diameter, wall thickness, cutting edge, straightness and other indicators are routinely inspected with general measuring tools such as vernier calipers, dial indicators, and micrometers. 5.2 The cone buckle of the locking joint at the upper end of the soil sampler is inspected with a standard test gauge. 5.3 The surface bluing or blackening treatment shall be carried out in accordance with the provisions of GB5936. 6
Inspection rules
The soil sampler is divided into type inspection and factory inspection. Type inspection is a comprehensive inspection of its performance, parameters, etc. The type inspection items include 4.1 to 4.7 of this standard. Type inspection should be carried out when one of the following situations occurs6.1Www.bzxZ.net

Trial type identification of new products or old products for transfer to factory production; a.
After formal production, when there are major changes in structure, materials, and processes that may affect product performance; b.
When the national quality inspection and supervision agency proposes the requirement for type inspection, the soil sampler sampled must pass all the inspection items specified in this standard before the type inspection is passed. During formal production, after a certain number of products have accumulated, random inspections are conducted, and the number of random inspections is 2%; when there are less than 100 pieces, it should not be less than two pieces. When there are unqualified products, double random inspections are conducted. If there are still unqualified products, piece-by-piece inspections must be conducted. 6.2 Factory inspection is an inspection of the main parameters of the soil sampler and the taper buckle connection of the lock joint. The product is allowed to leave the factory only after passing the inspection. 7 Marking, packaging, transportation, purchase and storage
7.1 Marking
The product name, model, specification, and manufacturer's logo should be on the obvious part of the product. 7.2 Packaging
The packaging shall be carried out in accordance with JG/T5012.
7.3 Transportation
During transportation, the product should be placed in a packaging box and must not be transported naked. Measures such as moisture-proof, collision-proof, and extrusion-proof should be taken, and it must not be mixed with acidic or alkaline items for transportation.
7.4 Storage
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The product should be placed in a dry and ventilated warehouse and must not be mixed with acidic or alkaline items. Additional Notes:
This standard was proposed by the Standard and Quota Research Institute of the Ministry of Construction. The Beijing Institute of Comprehensive Construction Machinery, the technical unit responsible for the standards of machinery, equipment and vehicles of the Ministry of Construction, is responsible for this standard. This standard was drafted by the Comprehensive Survey and Research Institute of the Ministry of Construction and the Survey and Research Department of the Ministry of Metallurgical Industry. The main drafters of this standard are Ren Huansheng and Qiao Guifang. This standard is entrusted to the Survey and Research Institute of the Ministry of Metallurgical Industry for interpretation. bzsosO.cOm
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