This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation, storage, etc. of triple-tube single-action rotary 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 5061.8-1995 Triple-tube single-action rotary soil sampler JG/T5061.8-1995 Standard download decompression password: www.bzxz.net

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Industry standard of construction industry of the People's Republic of China JG/T5061.8—1995
Heavy tube single-action rotary corer
Triple tube swivel type rotary corerConstruction standard
Published on January 5, 1996
Ministry of Construction of the People's Republic of China
Implementation on June 1, 1996
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Industry standard of construction industry of the People's Republic of China Triple tube single-action rotary corer
Triple tube swivel type rotary corerSubject content and scope of application
JG/T5061.8—1995
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of triple tube single-action rotary corer.
This standard applies to soil samplers for taking undisturbed soil samples of moldable, hard and plastic clay, silt, silt sand and fine sand of first-grade quality in boreholes as specified in GB5002I and JGJ89.
Referenced standards
General thread tolerance and fit (diameter 1355mm) Surface roughness parameters and values
50021 Geotechnical engineering survey specification
JGJ89 Undisturbed main sampling technical standard
YB235 Geological drilling steel pipe
JB/T5012 General technical conditions for packaging of construction machinery and equipment 3 Product classification
3.1 Main parameters and size series
The outer diameter of the outer pipe and the inner diameter of the liner are the main parameters of the triple-tube single-action rotary soil sampler. See Table 1 for the series. Table 1
Outer diameter of outer pipe
Inner diameter of liner
3.2 Structure
See Figure 1.
Approved by the Ministry of Construction of the People's Republic of China on 199601-05, 108
Implemented on 1996-06-01
Engineering Construction Standard Full Text Information System
1—Rubber pad, 2—Connector, 3—Oil seal, 4—Plane bearing; 5—Bearing cup, 6—Bearing; 7—Grease nipple; 8—Bearing, 9—Paper pad, 10—Lock nut; 11—Oil seal; 12—Connector cup, 13—"O" type sealing ring; 14—Small shaft, 15—Guide sleeve; 16—Steel ball; 17—Liner; 18—Outer tube; 19—Inner tube; 20—Drill bit; 21-Tube boot; 22 Circlip; 23—Circlip seat; 24—Flat head rivet; 25—Summoning gold 3.3
The model of the main heavy tube single-acting rotary earth extractor consists of the type code and main parameters. 3.3.1 Model compilation method
National return section
Update, variant code, in the order of Chinese phonetic letters (uppercase print) main parameters: outer diameter of outer tube × inner diameter of liner, mm single action
3.3.2 Marking example
Couple
Outer tube outer diameter 108mm, liner inner diameter 74mm triple tube single action rotary earth sampler: earth sampler TD108×74JG/T5061.8
3.4 ​​Basic parameters
Basic parameters should comply with the provisions of Table 2.
TD108×74
TD146X110
Outer tube outer diameter
Through tube inner diameter
Internal clearance ratio (C), calculated according to the following formula. Sampling equal length
Where: D. 1. Liner inner diameter, mm;
D. 1. Pipe shoe edge inner diameter, mm.
Internal barrier ratio %
Inner pipe lead distance
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4: Technical requirements
4.1 Products should be manufactured according to drawings and technical documents approved by the prescribed procedures. 4.2 The main parameters and basic parameters should comply with the provisions of 3.1 and 3.4. 4.3 Liner materials can be metal or non-metallic pipes. 4.4 The inner diameter deviation of the liner is ±0.3mm, the outer diameter deviation is ±0.5mm, and the roundness does not exceed its inner diameter deviation. The inner diameter surface roughness should not be lower than hand B.3.2, and the outer diameter surface roughness should not be lower than hand R.6.34.5
The connector should be made of materials with mechanical properties not lower than 45 steel, and tempered. The hardness after heat treatment should be HB234~270. The pipe shoe shall be made of steel with mechanical properties not less than 40C, and shall be quenched and tempered. The hardness after heat treatment shall be HB234~270. 4.6 The inner pipe, outer pipe and alloy drill body shall be made of DZ45~50 seamless pipe specified in YB235. The dimensional deviation of the inner pipe and outer pipe shall comply with the provisions of Table 3.
Straightness
TD146X110
Outer pipe outer diameter 146
Inner pipe outer diameter 127
T108×74
Outer pipe outer diameter 108
Inner pipe outer diameter 89
The inner and outer surfaces of the inner and outer pipes shall be smooth, without folds, scars, rolling folds, cracks, delamination, deep hairlines and straight lines. Slight concave and convex surfaces and other defects whose depth does not exceed the wall thickness tolerance range are allowed to exist. 4.8 The special trapezoidal threads of the inner tube, outer tube, alloy drill bit, pipe boot and connector shall comply with the threads of geological core tubes, casing and their joints specified in YB235.
4.9 The unprocessed outer surface of the inner tube and outer tube shall be treated with anti-rust treatment, and the surface shall be uniform and bright after painting. Except for standard parts, the remaining parts shall be treated with anti-rust treatment, such as bluing or blackening, and the color shall be uniform. 4.10 Assembly
4.10.1 All processed parts and purchased parts used for assembly must be inspected and qualified before assembly. 4.10.2 After assembly, each component shall be connected reliably and shall not be loose after vibration. In the vertical state, the coaxiality tolerance of the inner tube and the outer tube is 1mm, and the inner tube shall rotate flexibly while the outer tube shall not rotate. 5 Test method
5.1 Place the inner and outer tubes on a 2m×1m flat plate of not less than three levels, and use conventional methods to check their straightness, which shall comply with the provisions of Table 3. 5.2 Use a vernier caliper to measure the outer diameter and wall thickness of the inner and outer pipes. The deviations shall comply with the provisions of Table 3. The surface quality of the inner and outer diameters shall comply with the provisions of 4.7 when checked with the naked eye.
5.3 Use a vernier caliper to measure the inner and outer diameter deviations of the liner pipe. Use the naked eye to check the inner and outer surface quality against the roughness standard block. Both shall comply with the provisions of 4.4.
5.4 After the connector and the pipe shoe are quenched and tempered, the hardness shall be checked with a hardness tester and shall comply with the provisions of 4.5. 5.5 Special trapezoidal threads and ordinary threads shall be inspected with standard thread test gauges. 5.6 Lift the assembled earthworker in a vertical state and inspect its coaxiality and the outer pipe does not rotate. The inner pipe rotates flexibly and shall comply with the provisions of 4.10.2bzsoso,coEngineering Construction Standard Full Text Information System
6 Inspection Rules
The triple-tube single-action rotary earthworker is 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 4.10 of this standard. Type inspection should be carried out in any of the following situations:
Trial production and identification of new products or old products transferred to the factory After formal production, when there are major changes in structure, materials, and processes that may affect product performance; b.
c. When the national quality inspection and supervision agency proposes a type inspection requirement. The soil samplers 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, double random inspections should be carried out. If there are still unqualified products, each piece must be inspected. 6.2 Factory inspection is an inspection of the main parameters of the triple-tube single-action rotary soil sampler, special trapezoidal thread connection, flexible opening of the exhaust and drain valves, flexible rotation of the outer tube, and the inner and outer diameters and blade angles of the pipe boot. Products are allowed to leave the factory after passing the inspection. 7 Marking, packaging, transportation, purchase and storage
The product name, model, specification and manufacturer's logo should be on the obvious part of the product. 7.2 Packaging
Packaging shall be carried out in accordance with JG/T5012.
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 mixed with acidic and alkaline items.
Old products should be placed in a dry and ventilated warehouse and shall not be mixed with acidic and alkaline items. Additional instructions:
This standard is 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 standard technology unit of mechanical equipment and vehicles of the Ministry of Construction. This standard is drafted by the Comprehensive Survey and Research Institute of the Ministry of Construction and the North Survey and Research Institute of China Ordnance Industry. The main drafters of this standard are Zhang Wenxiu, Cui Jianmin and Qiao Guifang. This standard is entrusted to the North Survey and Research Institute of China Ordnance Industry for interpretation. bzsosO.cOm
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