This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of fixed piston thin-walled soil samplers. This standard applies to soil samplers for taking first-grade quality undisturbed soil samples of fluid plastic, soft plastic, plastic and part of silt and silt sand formations in boreholes as specified in GB 50021 and JG J89. JG/T 5061.4-1995 Fixed piston thin-walled soil sampler JG/T5061.4-1995 Standard download decompression password: www.bzxz.net

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Construction Industry Standard of the People's Republic of China JG/T5061.4—1995
Fixed piston thin-walled sampler
Fixed piston sampler
Published on January 5, 1996
Ministry of Construction of the People's Republic of China
Implementation on June 1, 1996
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Construction Industry Standard of the People's Republic of China Fixed piston thin-walled soil sampler
Fixed piston sampler
Subject Content and Scope of Application
5061.4—1995
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of fixed piston thin-walled soil samplers.
This standard applies to soil samplers for taking first-grade undisturbed soil samples of fluid plastic, soft plastic, plastic and part of silt and silt sand in boreholes as specified in GB50021 and JGJ89.
Referenced Standards
GB5936Test Method for Chemical Protective Layer of Ferrous Metals in Light Industrial ProductsGB50021Geotechnical Engineering Investigation Code
JGJ89Technical Standard for Undisturbed Sampling
DZ25Drilling Rod Lock Joint for Geological Drilling
JG/T5012General Technical Conditions for Packaging of Construction Machinery and EquipmentProduct Classification
Main Parameters and Dimension Series
Immersion Drip Method
National Standard Piston Thin-walled Soil Sampler takes the outer diameter of the sampling tube as the main parameter, and the series are as follows: 75mm, 100mm
3.2Structure
See Figure 1.
3.3 Model
1-extension rod, 2-reducing joint, 3-cone clamp mechanism, 4-joint, 5-screw; 6-sampling tube; 7-piston rod; 8-piston assembly; 9-fixing ring. The model of fixed piston thin-wall soil sampler consists of type code and main parameters. 3.3.1 Model compilation method
Approved by the Ministry of Construction of the People's Republic of China in 199601-05 and implemented in 1996-06-01
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3.3.2 Marking example
Update and variant codes are expressed in the order of Chinese phonetic letters (uppercase print) Main parameters: sampling tube outer diameter, mm
Fixed active cold
-soil sampler
Fixed active cold thin-walled soil sampler with an outer diameter of 75mm for the sampling tube: soil sampler TG75JG/T5061.4
3.4 ​​Basic parameters
Basic parameters should comply with the provisions of Table 1.
Area ratio, %
Area ratio (A.), calculated according to formula (1). Where Dw is the outer diameter of the sampling tube, mm;
D. -Inner diameter of the cutting edge of the sampling tube, mm.
3.4.2 Internal gap ratio (c). Calculated according to formula (2): D, -Inner diameter of the sampling tube, mm.
4 Technical requirements
Internal gap ratio, %
D: D.×100%
4.1 Products shall be manufactured according to drawings and technical documents approved to the specified degree. 4.2 The main parameters and basic parameters shall comply with the provisions of 3.1 and 3.4. Sampling tube length, mm
700, 1000
Blade angle, ()
4.3 The sampling tube shall be made of cold-drawn seamless steel pipe 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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Straightness
4.4 Thread tolerance and technical requirements shall be implemented in accordance with DZ25. 4.5 The surface of the soil sampler shall be treated with anti-rust, such as bluing or blackening, and the color shall be uniform. 4.6
After the soil sampler is assembled, the cone clamp mechanism shall be able to self-lock, the piston seal rubber bowl shall not be loose, and the air inlet shall be unobstructed. The piston rod connection shall be firm and reliable. The sampling tube shall not have obvious defects such as extrusion, depression, oblateness, etc., and the inner wall roughness shall not be lower than R. 3.2.5 Test method
Place the sampling tube on two V-shaped blocks on a 1.2m×±.0m three-level flat plate, and use general measuring tools such as vernier calipers, dial indicators, and micrometers to conduct routine inspections on its outer diameter, wall thickness, cutting edge, straightness and other indicators. 5.2 The cone buckle of the lock 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 inspected in accordance with the provisions of GB5936. 5.4
Touch the self-locking performance of the cone clamp mechanism, the tightness of the piston seal rubber bowl and the reliability of the connection between the piston rod. Inspection rules
The earth-collecting device is divided into type inspection and exit inspection station 6.1 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 occurs.
a. Trial determination and identification of new products or old products for transfer to factory production;
After formal production, if there are significant changes in structure, materials, and design, which may affect product performance c. When the national quality inspection and supervision agency proposes a requirement for type inspection. The sampled earth-collecting device 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 will be carried out. The number of random inspections is 2%. When there are less than 100 pieces, there should be no less than two pieces. When there are unqualified products, the random inspections should be doubled. If there are still unqualified products, they must be inspected piece by piece. 6.2 Factory inspection is an inspection of the main parameters of the soil sampler, the conical buckle connection of the lock joint, the self-locking performance of the piston rod and the sealing performance of the piston by the cone clamp mechanism. The product can only be shipped 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 standard.
7.3 Transportation
During transportation, the product should be placed in the packaging box and shall not be transported naked. Measures such as moisture-proof, collision-proof and extrusion-proof should be taken. It shall not be mixed with engineering construction standard full text information system
acids and alkalis.
The product should be placed in a dry and ventilated warehouse and should not be mixed with acidic or alkaline items. Additional statement:
This standard was proposed by the Standard and Quota Research Institute of the Ministry of Construction. This standard is managed by the Beijing Construction Machinery Comprehensive Research Institute, the Ministry of Construction's machinery equipment and vehicle standard technology management unit. This standard was drafted by the Ministry of Construction's Comprehensive Survey and Research Institute and the Ministry of Metallurgical Industry's Survey and Research Institute. The main drafters of this standard are Ren Huansheng and Qiao Guifang. This standard is entrusted to the Ministry of Metallurgical Industry's Survey and Research Institute for interpretation. bzsosO,co
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