This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of free piston thin-walled soil samplers. This standard applies to soil samplers for taking first-grade undisturbed soil samples of soft plastic, plastic and part of silt and silt sand formations in boreholes as specified in GB 50021 and JG J89. JG/T 5061.3-1995 Free piston thin-walled soil sampler JG/T5061.3-1995 Standard download decompression password: www.bzxz.net

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Construction Industry Standard of the People's Republic of China JG/T 5061.3—1995
Free piston thin-walled soil sampler
Freepistonsampler
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 Free piston thin-walled soil sampler
Free piston sampler
Subject Content and Scope of Application
JG/T5061.3—1995
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of free piston thin-walled soil samplers.
This standard applies to the soil sampler for taking the first-grade quality original soil samples of soft plastic, plastic and part of silt and silt sand strata in the borehole as specified in GB50021 and JGJ89.
Referenced Standards
GB5936 Test Method for Chemical Protective Layer of Ferrous Metals in Light Industrial Products Immersion Drip Method GB50021 Geotechnical Engineering Investigation Code
JGJ89 Original Main Sampling Technical Standard
DZ25 Geological Drilling Drill Pipe Lock Joint
JG/T5012 General Technical Conditions for Packaging of Construction Machinery and Equipment Product Classification
Main Parameters and Size Series
The piston thin-wall soil sampler takes the outer diameter of the sampling tube as the main parameter, and the series are as follows: 75mm, 100mm.
3.2 See Figure 1 for the structure.
1—Nut; 2—Reducing joint; 3—Cone clamp mechanism; 4—Joint; 5—Screw; 6—Sampling tube; 7—Piston rod; 8—Piston assembly 3.3 Model
The model of free piston thin-wall soil sampler consists of type code and main parameters. Approved by the Ministry of Construction of the People's Republic of China on May 1996 and implemented on June 1, 1996Www.bzxZ.net
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3.3.1 Model Compilation Method
3.3.2 Marking Example
Update the variant code, in the order of Chinese Pinyin
letters (uppercase print)
Main parameters: sampling tube outer diameter, mm
First by active base
-soil sampler
Sampling tube outer diameter 75mm white piston thin wall soil sampler soil sampler TZ75JG/T5061.3
3.4 ​​Basic parameters
Basic parameters should comply with the provisions of Table 1.
Area ratio, %
Area ratio (Ar), calculated according to formula (1). Where: Dw
-sampling tube outer diameter, mm;
-sampling tube blade inner diameter, mm.
3.4.2 Internal spacing ratio (Ci), calculated according to formula (2). Where: Ds
4 Technical requirements
sampling tube inner diameter, mm.
Internal gap ratio, %
Ds-De×100%
The product shall be manufactured according to the drawings and technical documents approved by the prescribed procedures. 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.B 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.
Inner diameter of cutting edge
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. TZ100
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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. 4.7 The sampling tube shall have no obvious defects such as extrusion, depression, flat roundness, etc., and the inner wall roughness shall not be lower than Ra3.2. 5 Test method
5.1. Place the sampling tube on two V-shaped blocks on a 1.2m×1.0m not less than a three-level flat plate, and use general measuring tools such as vernier calipers, first minute gauges, micrometers, etc. to conduct routine inspections on its outer diameter, wall thickness, cutting edge, straightness and other indicators. 5.2 The cone buckle of the locking joint at the upper end of the soil extractor is inspected with a standard test gauge. The surface is bluish or blackened and inspected according to the provisions of GB5936. 5.3
Touch and inspect the self-locking performance of the cone clamp mechanism and the tightness of the piston sealing rubber bowl. 6 [Inspection rules
Free piston extractors are divided into type inspection and factory inspection. 6.1 Type inspection is a comprehensive inspection of its performance, parameters, etc. 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.
Trial determination and identification of new products or old products transferred to the factory for production; D
After formal production, when there are major changes in structure, materials, and processes that may affect product performance; When the national quality inspection and supervision agency proposes a type inspection requirement. The soil samplers sampled must meet all the inspection items specified in this standard before the type inspection is passed. During formal production, sampling inspection is carried out after a certain number of products are accumulated. The sampling inspection quantity is 2%. When it is less than 100 pieces, it should not be less than two pieces. When there are unqualified products, the sampling inspection should be doubled. If there are still unqualified products, each piece must be inspected. 6.2 Factory inspection is to inspect the main parameters of the soil sampler, the cone buckle connection of the lock joint, the self-locking performance of the cone clamp mechanism on the piston rod, and the sealing performance of the piston. The product can only be shipped after passing the inspection. 7 Marking, packaging, transportation, storage
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 shipped mixed with acidic and alkaline items.
7.4 Storage
The product should be placed in a dry and ventilated warehouse and should 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. This standard is under the jurisdiction of 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.Com
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