This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of beam-jointed soil samplers. This standard applies to soil samplers for taking first and second grade undisturbed soil samples of fluid plastic, soft plastic, plastic and part of silt and silt in boreholes as specified in GB 50021 and JG J89. JG/T 5061.6-1995 beam-jointed soil sampler JG/T5061.6-1995 standard download decompression password: www.bzxz.net

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Industry standard of construction industry of the People's Republic of China JG/T5061.6—1995
Sampler with thinwalled extension of shoe
Published on January 5, 1996
Implementation on June 1, 1996
Ministry of Construction of the People's Republic of China
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Industry standard of construction industry of the People's Republic of China Sampler with thin-walled extension of shoe
Sampler with thin-walled extension of shoeSubject content and scope of application
JG/T5061.6-1995
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of samplers with thin-walled extension of shoe.
This standard is applicable to soil sampling devices for taking first and second grade undisturbed soil samples of fluid plastic, soft plastic, plastic clay, and some silt and silt sand in boreholes as specified in GB50021 and JGJ89. a
Reference standards
GB197 Ordinary thread
(Tolerance and fit (diameter 1~355mm)
GB50021 Geotechnical engineering investigation specification
JGJ89 Original soil sampling technical standard
YB235 Geological drilling steel pipe
DZ25 Geological drilling drill rod lock joint
JGT5012 General technical parts for packaging of construction machinery and equipment Product classification
Main parameters and size series
The outer diameter of the thin-walled tube of the bundled earth sampler is the main parameter, and the series is as follows: 65mm; 83.8mm.
See Figure 1.
1-Variable thread joint; 2-Lifting cap 3-Connecting shaft; 4- Gasket; 5-rubber pad; 6-lower gasket, 7-nut; 8-upper section 9-spacer ring; 10-middle section; 11-ring knife; 12-lower section 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 Model
The model of the bundled earth picker consists of the type code and main parameters. 3.3.1 Model compilation method
Update, variant code, and express the main parameters in the order of Chinese phonetic letters (uppercase print): the outer diameter of the thin-walled tube of the lower section, mm
Bundled
-earth picker
3.3.2 Marking example
Bundled earth picker with an outer diameter of 83.8mm for the thin-walled tube of the lower section: Take + device TJ83.8JG/T5061.6
Basic parameters
Basic parameters should comply with the provisions of Table 1.
Lower section thin-walled tube
Area ratio (Ar), calculated according to formula (1). Area ratio, %
10.6 or 12
10.3 or 11.4
Dw2—D.2
or In: Dw
Lower section thin-walled tube outer diameter, mm;
Lower section thin-walled tube cutting edge inner diameter, mm.
3.4.2 Inner limit ratio (G) is calculated according to formula (2) Ct=D=D-×100%
-ring cutter inner diameter, mm.
In the formula: Ds-
4 Technical requirements
4.1 Products shall be manufactured in accordance with 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. Internal clearance ratio, %
Blade angle, ()
Waste soil pipe length
150~180
150~200
4.3 The lower section thin-walled tube of the bundle-section earth-picking device shall be made of seamless steel pipe with mechanical properties not lower than DZ50, and the quenching hardness of the blade part shall be HRC42~46, and its dimensional deviation shall comply with the provisions of Table 2. bzsoso,com Engineering Construction Standard Full Text Information System
Blade edge inner diameter
Straightness
The lower section thin-walled tube of the earth-picking device shall be free of obvious defects such as extrusion, depression, and oblateness. 4.4
1/1000
The special trapezoidal threads of the lower section, middle section, upper section and lifting cap shall comply with the threads of geological core stacks, casing and their joints specified in YB235. The tolerances and technical requirements of ordinary threads and locking joint threads shall be implemented in accordance with GB197 and DZ25 respectively. All machined parts of the beam-jointed earth-picker shall be treated with anti-rust treatment, such as bluing or blackening, and the color shall be uniform. The axial clearance of the ring cutter is 0~0.5mrh
The cross-sectional area of ​​the drainage channel of the earth-picker head shall not be less than 7.5% of the inner diameter area of ​​the cutting edge, and the internal mud and water discharge shall be unobstructed. Test methodwww.bzxz.net
Place the thin-walled tube of the lower section of the beam-jointed earth-picker on a 1.2m×1.om not less than a three-level flat plate, and check its straightness by conventional methods, which shall comply with the provisions of Table 2.
Special trapezoidal threads, locking joint threads and ordinary threads shall be inspected with standard thread test gauges. Use a vernier caliper to measure the outer diameter of the lower thin-walled tube. The wall thickness deviation should comply with the inspection rules specified in Table 2.
Bundle-section soil collectors 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 41 to 4.8 of this standard. Type inspection should be carried out in the following situations.
a. New products or old products are transferred to the factory for trial production and type identification. b. After formal production, when there are major changes in structure, materials, and processes that may affect product performance; c. When the national quality inspection and supervision agency proposes a type inspection requirement. The soil collectors sampled must pass all the inspection items specified in this standard before the type inspection is passed. During formal production, random inspections are carried out after a certain number of products have accumulated. 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, the random inspections should be doubled. If there are still unqualified products, they must be inspected piece by piece. 6.2 Factory inspection is the inspection of the main parameters of the soil sampler, special trapezoidal thread connection, the size and blade angle of the lower thinner tube of the soil sampler, and the sealing performance of the piston. The product is allowed to leave the factory after passing the inspection. 7 Marking, packaging, transportation, 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
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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 exposed. Measures such as moisture-proof, collision-proof, and extrusion-proof should be taken. It shall not be shipped together with acidic and alkaline items.
7.4 Storage
The product should be placed in a dry and ventilated warehouse and shall not be mixed with acidic and alkaline items. Additional Notes:
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 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 China North Industries Group Corporation's ...
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