JB/T 3776-1997 Umbrella drill stand

JB/T 3776-1997 This standard is a revision of JB 3776-84 "Umbrella Drilling Frame". This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality assurance of umbrella drill rigs. This standard applies to umbrella drill rigs used in drilling and blasting construction to drill blasting holes with compressed air as the power. JB/T 3776-1997 Umbrella Drilling Frame JB/T3776-1997 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T3776-1997
Umbrella Drilling Rig
1997-03-04 Issued
Ministry of Machinery Industry of the People's Republic of China
1997-10-01 Implementation
JB/T3776-1997
This standard is a revision of JB3776-84 "Umbrella Drilling Rig". The main differences between this standard and JB3776-84 are: In terms of specifications, the FJD4 type four-arm umbrella drilling rig is added to be suitable for digging medium and small wells. - The wellbore diameter applicable to each specification of umbrella drilling rig is expanded to improve the adaptability of the product - The functional requirements for drilling water holes, grouting holes and drainage holes are added to prevent well flooding accidents during the well drilling process. - The gas consumption and water pressure parameter values ​​are clearly proposed to facilitate the use of the product on site. 1. The cumulative drilling depth before the first overhaul is changed from a unified index to classification according to different specifications. This standard shall be implemented from October 1, 1997, and replace JB3776-84. This standard is proposed and managed by the National Technical Committee for Standardization of Mining Machinery. The responsible drafting unit of this standard: Shandong Mining Machinery Factory. The main drafters of this standard: Shi Peirong, Kong Dechang, Yang Xianli, Huang Liping, Guo Ming. 1 Scope
Machinery Industry Standard of the People's Republic of China
Umbrella Drilling Frame
JB/T3776-1997
Replaces JB3776-84
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality assurance of umbrella drilling rigs.
This standard applies to umbrella-shaped drill rigs used in drilling and blasting construction with compressed air as the power to drill blasting holes. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB985—88
GB5898—86
GB/T 6402—91
GB10095—88
GB/T13306—91
JB/T7302—94
ZBJ84014—88
ZB J84 016—89
3 Product classification
Basic form and size of weld groove of gas welding, manual arc welding and gas shielded welding Rock drilling machinery and pneumatic tool noise measurement method Engineering method Ultrasonic inspection method of steel forgings
Involute cylindrical gear accuracy
General technical conditions for product packaging of rock drilling machinery and pneumatic tools General technical conditions for painting of rock drilling machinery and pneumatic tools Guide type rock drill
The basic structural type of umbrella drill rig is umbrella-shaped, which is divided into four arms, six arms and nine arms according to the number of drill arms configured around the column. Model
Number of drill arms configured
Lifting and installation, (lifting)
Umbrella drill rig, (rig)
Well construction auxiliary equipment, (well)
3.3 The basic parameters of umbrella drill rig shall comply with the provisions of Table 1. Approved by the Ministry of Machinery Industry on March 4, 1997
Implementation on October 1, 1997
Basic parameters
Applicable and simplified diameter
Overall dimensions after folding
Diameter of circumscribed circle
Depth of rock blasthole drilled in one time
Maximum diameter of surrounding blastholes
4 Technical requirements
JB/T3776-1997
4.1 The umbrella-shaped drill rig shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved through the prescribed procedures. 4.2 The structure of the umbrella drill rack should ensure:
a) It can be easily moved, hung and hoisted between the parking and working positions; b) When one drill arm cannot work normally, the adjacent two drill arms can compensate for the work; c) Each drill arm can move flexibly, the drilling hole positioning is convenient, and it is stable when drilling rock; d) The rack body is fixed reliably when working;
e) Under reasonable blasting technology, it can drill slot holes; f It can drill 40m deep water exploration holes, grouting holes and drainage holes. FJD9
4.3 The performance of the rock drill should comply with the provisions of ZBJ84016. The working water pressure when drilling blast holes is 0.3~0.4MPa. The specifications of the drill tail are:
a) When using a round drill rod, it is Φ30mm×42mm; b) When using a hexagonal drill rod, it is Φ25mm×159mm. 4.4 Various pipe joints, valve bodies, hydraulic hoses, and pneumatic motors should comply with the provisions of relevant standards. 4.5 Top plate
4.5.1 The support arm should be evenly divided, and the error should not be greater than 0.5°4.5.2 The air and water distributors are all welded continuously, and the quality of the welds should comply with the provisions of GB985, and there should be no leakage after welding. 4.6 Column
4.6.1 The coaxiality of a group of holes for installing each boom should meet the requirements of level 8. 4.6.2 The hydraulic oil distributors are all welded continuously, and the quality of the welds should comply with the provisions of GB985, and there should be no leakage after welding. 4.7 The carrying capacity of the height adjuster should not be less than 1.5 times the weight of the whole machine. 4.8
The matching clearance between the pneumatic reversing valve body and the valve core shall not be greater than 0.038mm, and the surface roughness R. value shall not be greater than 1.6μm, and the valve core shall move flexibly in the valve body.
JB/T3776-1997
4.9 The temperature rise of the pneumatic motor bearing should not be greater than 30℃. 4.10 Reducer
4.10.1 The manufacturing accuracy of the gear should comply with the provisions of 8FH in GB10095 and there should be no leakage.
The cleanliness should comply with the provisions of Table 2.
Cleanliness
≤100
≤120
4.10.4 When rotating by hand after assembly, it should be light and stable, and no jamming is allowed. 4.11 After assembly, there should be no oil leakage in each hydraulic system, and no air leakage in each pneumatic system. FID9
≤150
4.12 After assembly, each oiler should be able to ensure continuous and uniform supply of lubricating oil required by each part, and the oil consumption per rock drilling cycle should comply with the provisions of Table 3.
Oil consumption
4.13 The air pressure used by the umbrella drill rig is 0.5~0.7MPa, and the air consumption should comply with the provisions of Table 4. Table 4bZxz.net
Air consumption
The clearance between the slide rail and the slide of each thruster shall not be greater than 1mm. 4.14
The thrust force and the drilling force of each thruster shall not be less than 7KN. 4.15
The cumulative rock hole drilling depth before the first overhaul of the umbrella drill rig shall comply with the provisions of Table 5. 4.16
Cumulative rock drilling depth
≤100
≥105
4.17 The safety factor of the lifting components (triangle plate, lifting ring, pin shaft) shall not be less than 8, and major defects such as interlayer, folding, crack, forging, scarring and slag inclusion are not allowed, and ultrasonic flaw detection shall be carried out according to the provisions of Level 2 in GB/T64023
JB/T3776-1997
4.18 The noise of the umbrella drill rack shall comply with the provisions of the "Industrial Enterprise Hygiene Standard". 4.19 The paint color, quality, inspection method and safety signs of the umbrella drill rack shall comply with the provisions of ZBJ84014. 4.20 Complete set supply scope:
a) Complete machine (including rock drill);
b) Technical documents:
C) Spare parts and special tools specified in the manual. 5 Test methods
5.1 Gas and water distributor welding tightness test: Apply soapy water on the weld surface and keep it at 0.7MPa air pressure for 10 minutes. No bubbles should appear on the weld surface.
5.2 Hydraulic oil distributor tightness test: Keep it at 1.5 times the working pressure for 10 minutes. It is qualified if the following conditions are met: a) There is no oil leakage on the weld;
b) There is no residual deformation visually.
5.3 Height regulator static pressure test: When the piston head is pressurized to 1.5 times the weight of the whole machine, keep it for 10 minutes, and the piston downward movement is not more than 0.2mm.
5.4 Reducer cleanliness inspection: After the reducer runs idle for 2 hours, put the internal parts into the cleaning liquid for cleaning, filter the lubricating oil and cleaning liquid with a 220μm filter, and then put the impurities into a drying oven at 100℃ for 1 hour to dry, weigh the impurities, and it should meet the requirements of Table 2.
5.5 Before assembly, hydraulic components should be subjected to a pressure test at 1.5 times the working pressure, and pneumatic components should be subjected to a 0.7MPa air injection test, with a pressure holding time of 1min. No leakage or bubbles should occur. 5.6 For the determination of the thruster pull-out force, add a load of 7kN to the rock drill, start the pneumatic motor, and the rock drill should rise steadily. 5.7 The whole machine noise measurement method shall comply with the provisions of GB5898. 6 Inspection rules
6.1 Factory inspection
6.1.1 Each product must be inspected and qualified by the quality inspection department of the manufacturer before it can be shipped, and documents proving the quality of the product should be attached. 6.1.2 Each product shall be subjected to external inspection, dimension inspection and continuous idling test of not less than 2h before leaving the factory, and shall meet the requirements of 4.94.10.24.11 and 4.14, and achieve the following:
a) Each operating handle shall rotate flexibly and reset accurately; b) The three support arms shall be vertically downward in the folded position, and the working position shall be 7° to 10° upward horizontally; d) The thruster slide with the rock drill shall move back and forth on the slide rail 10 times, and there shall be no jamming; d) Each oil cylinder shall be extended and retracted 10 times in full stroke, and the operation shall be stable. 6.1.3 After the idling is qualified, the thruster pull-out force test shall be carried out according to the requirements and methods of 4.15 and 5.6. 6.1.4 Visually inspect the quality of painting and packaging, and check the completeness. 6.2 Type inspection
6.2.1 Type inspection shall be conducted in any of the following cases: a) When a new product or old product is transferred to a factory for trial production and appraisal; b) During formal production, if there are major changes in structure, materials, and processes that may affect product performance; 4
c) During normal production, it shall be conducted every 3 years; d) When production is resumed after a long period of suspension;
JB/T3776-1997
e) When the national quality inspection agency proposes to conduct type inspection. 6.2.2 Contents of type inspection
6.2.2.1 Includes all contents of factory inspection. 6.2.2.2
2 Observe and test the structural performance of the product at the manufacturer or on-site, which shall comply with the provisions of 4.2. 6.2.2.3
3 Determine the performance of the rock drill at the national statutory inspection department. Test the depth of the rock hole drilled by the umbrella drill rig at the manufacturer or on-site. 6.2.2.4
Test the oil and gas consumption of the umbrella drill rig at the manufacturer or on-site. Check the cleanliness of the reducer.
7 Marking, packaging, transportation and storage
7.1 Each product must be fixed with a product label in an obvious and appropriate position. Its type should comply with the provisions of GB/T13306 and indicate the following:
a) Manufacturer name:
b) Product name and model;
c) Main technical parameters;
d) Product standard number:
e) Factory number;
f Manufacturing date.
7.2 Product packaging should comply with the provisions of JB/T7302. 7.3 Products should meet the requirements of water and land transportation. 7.4 All exposed processed surfaces should be coated with anti-rust grease and wrapped with protective materials such as plastic film or oil paper. When not in use for a long time, it should be stored in the warehouse and maintained regularly to prevent parts from rusting or damage. 7.5 Technical documents should be packed in plastic bags, including: a) Product manual:
b) Product certificate;
c) Packing list.
8 Quality Assurance
On the premise that the user complies with the relevant provisions of this standard and the manufacturer's product manual, the product warranty period is 12 months from the date of shipment or 6 months from the date of installation and use by the user (excluding wearing parts). 5
Mechanical Industry Standard
JB/T3776—1997
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2, Shouti South Road, Beijing: Postal Code 100044)*
Format 880×1230
Printing Sheet 1/2
Word Count 12000
First Edition July 1997
First Printing July 1997
Print Quantity 1-500
Price 500 Yuan
97-087
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cnL661-9 /T
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