Some standard content:
J84 | | tt | | JB | Published
Ministry of Machinery Industry of the People's Republic of China
Implemented on 1994-01-01
Published
Machinery Industry Standard of the People's Republic of China
H170 Series Fully Hydraulic Tunneling Drilling Rig
1 Subject content and scope of application
JB/T6949-93
This standard specifies the varieties, technical requirements, test methods, and inspection rules of the H170 series fully hydraulic tunneling drilling rigs and marking, packaging, transportation and storage.
This standard applies to H170 series fully hydraulic tunnel drilling rigs. 2 Reference standards
JB3576
ZBJ84013
ZBJ84014
3 Product varieties
General technical conditions for rust prevention of Leiyan machinery and pneumatic tools Rock drilling machinery and pneumatic tools General Technical Conditions for Product Packaging General Technical Conditions for Painting of Rock Drill Cores and Pneumatic Tools 3.1 Products are divided into four varieties according to the main components (type structures) configured (see Table 1). 3.2 Product model is the original model of the imported product, the description is as follows ：H
Product
Product
Varie model
H174
H175Www.bzxZ.net
H177
H178
17
Applicable cross-section
m
3090
45~90
55120
55~120
0|| tt||Type knot tree code
Original design series code
The first alphabet 1 of English HYDRAULIC (hydraulic)
Department
Drill
Fee
2×BUT35
3×BUT35
2XBUT35
3×BUT35
pieces
Propulsor
2XBMH600
3XBMH600
2XBMH600
3XBMH600
name
title
type
xieyan machine
2 ×SCOP1238 | There are two types, HL75 and HL91, which can be selected according to the required carrying capacity. Approved by the Ministry of Machinery Industry on 1993-07-29
No.
Service Platform
Power Station
HL75*
(HL91)
HI75
(HL91)
HL75
(HLSI)
HL75
(HL91)
BHU38-2
BHU38 -3
BHU38-2
BHU38-3
Drill arm base
Not liftable
Not liftable
Can lift 2000mm|| tt||Can be raised to 2000mm
Implemented on 1994-01-01
1
3.3 The product appearance (minimum) dimensions are shown in Table 2. Model
H174
H175
H177
H178
Technical requirements
4.1
4. 2||tt| |4.3
612
11630
11630
11575
11875
JB/T6949-93
Table 2| |tt||long (with BMH600 series dimension selector)
614
12230
12230
12175
12475
616
12840
12840
12785
13085
618
13460
13460
13405|| tt||13705
width
2500
3050
3050
3050
products shall comply with the requirements of this standard and shall The drawings and technical documents approved by the prescribed procedures are manufactured. All parts must pass the inspection. Accessories and purchased parts must have certificates of conformity before they can be assembled. The technical parameters of the main components are shown in Table 3.
Table 3
Engine power
Chassis
Drill pipe
Propulsor
Xie Yan machine
Service platform| |tt||Power station
Electrical system
kw
116
Yanfo length
mm
1600
Model
No.
BMH612
BMH614
BMH616
BMH618
Large quantity impact power
15||tt| |Type
No.
HL75
HL91
Type
No.
BHU38-2
BHU38-3|| tt||Type
No.
H174
H175
H177
H178
kw
Note: 1) ± 45* is the perturbation angle without adding limit block. Minimum turning radius
n
9.4 on the outside and 5.1 on the inside
compensation length
1600
mm
full||tt| |Length
mm
5295
.5895
6505
7125
Impact frequency Hz
40~60| |tt||Withstand load kg
300
500
AgV oil pump
2
3
Taiwan
Total Power kw
100
150
100
150
Main component assembly requirements shall be in accordance with Articles 4.4.1~4.4.9. 4.4
2
Crying ability
()
15
Angle of leaning towards you (\)
-30～+50| |tt||Xuan rod length
3700
4305
4915
5525
mm
Drill rod speed r/min|| tt||0~300
Motor power kW
2×45
3×45
Voltage V
380/660
380/660
380/660
380/660
high
mm
3050
3050
3450| |tt||3450
Tire pressure
MPa
0.75
Swing angle
(\)
±45\||tt ||Propulsion kN
12.5
12.5
12.5
12.5
Water consumption L/s
1.1 (pressure is 1.2MPa )
Maximum length
mm
11085
11347
Oil hoop capacity 1
240
346||tt ||Rate Hz
50/60
50/60
50/60
50/60
4.4.1Chassis
JB/T 6949--93
The lubricating oil in the following devices should be added to the specified oil level; 4.4. 1.1
Engine:
b.| |tt||c.
d.
e.
f.
g.
Fuel injection pump;
Steering:
Wheel reducer:
Front and rear differential:
Air compressor:
Cable reel reducer.
4.4.1.2 On a 15° slope, the driving speed of first gear and second gear is not less than 3km/h and 5km/h respectively. 4.4.1.3 On a 15° slope, when driving downhill at steady speed, the maximum driving speeds in first and second gear are 3km/h and 10km/h respectively. 4.4.1.4 During walking, the hand braking distance for first and second gears shall not be greater than 3m and 8m respectively. 4.4.1.5 The forward and backward driving speeds of the chassis in first, second and third gears are not less than 3 and 8.16km/h respectively. When braking in second gear, the maximum braking distance is 5m. 4.4. 1.6
4.4.2 Drill arm
The drill arm and drill arm seat should be reliably connected.
4. 4. 2. 1
4.4.2.2
The assembly numbers of the drill arm and the control panel should be consistent and must not be interchanged. 4.4.2.3 The movement of the drilling arm should be consistent with the control graphics. 4.4.2.4 The lubrication part of the drill arm should be filled with grease and marked with a red mark. 4.4.2.5 The pressure control relief valve is adjusted so that the propeller propulsion pressure is 4MPa forward and 6.3MPa backward. 4.4.3 Propeller
4.4.3.1 The propulsion stroke is adjusted correctly, the wire rope is tightened, the limiter is installed at the accurate position, and the rock retaining machine can automatically return after completing the stroke. 4.4.3.2 Use the adjustment pad to ensure that the distance between the propeller guide rail and the bracket slideway is at most 1.5mm. 4.4.3.3 Each hose should be correctly placed on the guide wheel. The hose should be appropriately tight and lubricated. 4.4.4 Rock drill
The nitrogen charging pressure of the accumulator is 50% of the pressure of the impact mechanism, but the maximum is 11.5MPa. 4.4.5 Service platform
4.4.5.1 The control handle of the console and the control handle of the manned vehicle can work independently without interfering with each other and have the same function. 4.4.5.2 The hoses are correctly marked and lubricated and filtered at the specified parts. 4.4.6 The electrical system and power station
The current of each overloaded thermal appliance is adjusted to the rated value of each motor. 4.4.6.1
4. 4. 6. 2
The current tripper of the circuit breaker is set at the total consumption value. 4.4.6.3 Connect the phase sequence of each motor correctly, that is, mark R, S, and T corresponding to U, V, and W respectively. 4.4.6.4 Adjust the short-circuit protection of the main circuit breaker and the oil pump motor circuit breaker to the maximum value. 4.4.6.5 External wires are marked according to the external wiring diagram. 4.4.6.6 All monitoring device function test instruments and electrical box markings should be consistent. 4.4.6.7 The A8V ticket should be able to rotate freely after assembly, and no jamming is allowed. 4.4.6.8 No oil leakage is allowed at the control joints. 4.4.7 Comprehensive working performance requirements of drill boom, thruster and rock drill. The comprehensive working performance requirements of drill boom, thruster and rock drill are shown in Table 4. 3
High pressure impact pressure
Low pressure impact pressure||tt| |Advance pressure during rock drilling
Retreat pressure
Positioning pressure
Automatic adjustment pressure of anti-jamming drill
Drill rod speed
4.4.8 Appearance|| tt||4. 4. 8. 1
4. 4.8.2
JB/T 694993
Table 4
MPa
MPa|| tt||MPa
MPa
MPs
MPa
/min
product coating should comply with the regulations of ZBJ84014. 20
15
7.5
12
20
7
170
The repair welding parts during product assembly should The finish is smooth, the welding bumps are removed, and there are no obvious marks on the hand. 4.4.8.3 The hydraulic hoses should be arranged neatly, and the various signs should be in correct positions. The contents should be complete and clear. 4.4.9 Others
4. 4. 9.1
4. 4.9.2
4.4.9.3
4.4.9.4
4.4.9.5|| tt||4.4.9. 6
4. 4. 9. 7
The pumping frequency of the electric pulse lubrication system is 20 times/min. The lubricating oil pressure is 0.15MPa. An aluminum seal must be added after the gas storage tank is safely adjusted. The system working pressure is 0.02~0.7MPa, and the safety valve pressure of the flushing water is set at 0.7MPa. Each hydraulic pipe and pipe joints are tied with corresponding marking tapes as shown in the figure. The hydraulic oil tank and oil level indicator do not leak oil, and the oil temperature thermometer displays the correct value.
Product rust prevention should comply with the provisions of JB3576, 5 test methods
3.1 test conditions
5.1.1 Various measuring instruments and instruments should have inspection certificates within the validity period. And Measurement accuracy requirements should be met, and the instrument should be inspected and calibrated before testing.
5.1.2 The test environment should meet the following conditions: a.
b.
e.
d.
e.
f.
%
The voltage fluctuation is not greater than the rated voltage ±10%. The frequency fluctuation is not greater than the rated frequency ±2%: the compressed air pressure fluctuation is not greater than the rated pressure ±5%: water pressure The fluctuation is not greater than 5% of the rated water pressure: the ambient temperature is 0~40℃, and the relative humidity is below 80%. The sea level does not exceed 1500m: the compressive strength of the rock used in Shangyan is 80~120MPa; the site used for the walking test is not Flat pavement less than 30m long: the slope of the climbing test face is 15°, and the length is not less than 10m. 5.2 Performance test
5.2.1 Chassis performance test
5.2.1.1 Engine idling test
Start the engine and run it idling for 10 minutes. At the same time, check the starting device, engine system, water temperature meter, and fuel meter. , hand and foot throttle, oil pressure indicator, charging indicator, timer, switch key function, lamp, etc. are normal. 5.2.1.2 Steering test
Determination of minimum turning radius, the drilling rig drives at low speed (forward or backward) with maximum steering (left and right directions), measure the outermost diameter and inner diameter of the walking track, and take half of them. is the minimum turning radius on the outside and inside, and should comply with the requirements in Table 3. 5.2.1.3 Braking test
4
The braking test shall meet the following requirements:
JB/T6949-93
8. Foot brake: When the engine is running at the highest speed, when driving in third gear, the drilling vehicle can achieve foot braking; b. Parking brake: using the parking brake, the standing vehicle should be able to stop on a 15* slope; e. The brake air pressure gauge should indicate 0.67~0.77 MPa pressure. 5.2.1.4 Sealing test
During the chassis steering, braking and other tests, observe the sealing surfaces and pipe joints of each oil, gas, and water system at any time. There should be no obvious leakage. After parking for 15 minutes, the seals of each There should be no obvious dripping on the surface and pipe joints. 5.2.2 Working mechanism performance test
5.2.2.1. Rock retention performance test
The rock drilling performance test should meet the following requirements: a. Rock drill start-up, period change, and speed change test: under normal operating oil pressure Next. The rock drill should be able to open and close freely, adjust the main oil pressure, and test the impact rate and drill rod speed should comply with the requirements of Table 3, that is, the shaft speed and impact period rate can be adjusted appropriately: b. Comprehensive performance test of drill boom, thruster and rock mass: Determine the comprehensive performance and consumption of each drill arm according to Table 4.
Rock drilling energy consumption test, use a drill head with a diameter of 50mm to conduct the rock cutting test, and record the actual current consumption under each working condition parameter value 5.2.2.2 Drill arm and thruster movement test
Drilling The movement test of the arm and thruster should meet the following requirements: The extension, compensation, flipping, pitching, swing and other action tests of the drilling arm should comply with the provisions of Table 3 and be consistent with the operation instruction graphic a.
:| | tt | e.
5.2.2.3 Cable roll test
Check whether the friction clutch can make the cable roll screen work normally. 5.2.2.4 Service platform performance test
Check whether the control handle on the console and the control handle on the manned basket can work independently and achieve the requirements of reaching any position of the working section.
5.2.3 Vehicle performance test
5.2.3.1 Slope performance test
On a dry concrete road with a slope of 15°, drive uphill. Measure the driving speed with the drill arm in front and the engine in the first and second gear respectively. Record the time of each 25m driving. Take the average value of the reciprocating 5 times and convert it into speed, which shall comply with the provisions of Article 4.4.1.2. 5.2.3.2 Engine braking test
Under the same conditions as Article 5.2.3.1, engage the first and second gears. Drive downhill with the engine at rest. Measure the downhill speed using the same method and requirements, which shall comply with the provisions of Article 4.4.1.3. 5.2.3.3 Hand brake test
At the speed of the first and second gear, apply the hand brake and measure the braking distance respectively. Repeat 5 times and take the average value. It shall comply with the provisions of Article 4.4.1.4.
5.2.3.4 Foot brake test
At the speed of the second gear, apply the foot brake and measure the braking distance. Repeat 5 times and take the average value. It shall comply with the provisions of Article 4.4.1.6. 5.2.3.5 Horizontal driving test
Measure the driving speed of the first, second and third gear forward and reverse respectively. Measure 5 times and take the average value. It shall comply with the provisions of Article 4.4.1.5. 5.2.4 Other tests
5.2.4.1 Use a dynamometer to test the maximum thrust of the thruster. It shall comply with the provisions of Table 3. 5.2.4.2 Use a feeler gauge to check the clearance of the thruster guide rail (thruster beam) in the bracket slideway. It shall comply with the provisions of Article 4.4.3.2. 5.2.4.3 Check the thruster pressure with a pressure gauge, and it shall comply with the provisions of Article 4.4.2.5. 5
JB/T6949-93
5.2.4.4 Check the maximum nitrogen filling pressure of the rock drill energy demander, and it shall comply with the provisions of Article 4.4.4. 5.2.4.5 Check the tire pressure, and it shall comply with the provisions of Table 3. 6 Inspection rules
6.1 Inspection classification
Product inspection is divided into factory inspection and type inspection. 6.2 Factory inspection
6.2.1 Each product must undergo factory inspection, and can only be shipped after passing the inspection. The product quality certificate shall be attached when it leaves the factory. 6.2.2 The factory inspection includes the following contents:
Main technical parameters, in accordance with the provisions of Article 4.3:a.
b.
Correctness and kinematics of assembly, in accordance with the provisions of Articles 4.4.1 to 4.4.7:Appearance quality. In accordance with the provisions of Article 4.4.8,c.
6.3 Type inspection
6.3.1 In any of the following situations, a plastic inspection should be carried out:a.
b.
c.
d.
e.
When there are major changes in design, structure, material, and process; when the product is resumed after a long period of suspension; when the results of the factory inspection are significantly different from those of the last type inspection; when the normal production of products is interrupted for five years:
When the national quality supervision agency proposes the requirement for type inspection, 6.3.2 The contents of type inspection include all the contents of the factory inspection and the measurement of all technical parameters of the product. 6.4 Sampling
6.4.1 Factory inspection is a full inspection.
6.4.2 Type inspection is random sampling, and the number of samples is one unit. 6.5 Judgment rules
6.5.1 During factory inspection, if there are 1 to 2 minor defects in appearance, it can still be judged as qualified. If there are problems with assembly quality, it should be adjusted to qualified. If there are unqualified items in performance tests, it is allowed to be re-checked once. If it still does not meet the requirements of this standard, it will be judged as unqualified. 6.S.2 During type inspection, if there are unqualified items in technical parameters and performance tests and they are still unqualified after re-testing, the product will be judged as unqualified. 7 Marking, packaging, transportation and storage
7.1 Marking
The product should have a fixed product label in a conspicuous place, and the content should include: 8.
b.
c.
Product model and name:
Main parameters of product:
Factory mark:
d.
Manufacturer name:
e.
Manufacture date and product number.
7.2 Packaging
7.2.1 Product packaging shall comply with the provisions of ZBJ84013. 7.2.2 The whole product shall be packaged naked when leaving the factory. If the drill arm, thruster and service platform are packaged separately before leaving the factory, the drill arm and service platform shall be fixed with a special metal frame and covered with plastic cloth, and the thruster shall be packaged in a wooden box. 7.2.3 Random technical documents shall be sealed and packaged with moisture-proof materials, including: a.
b.
c.
6
Product certificate;
Operation and maintenance instructions;
Packing list;
d.
e.
Certificate of conformity:
List of random accessories.
JB/T6949-93
7.2.4Before the product is shipped, the following delivery preparations should be carried out:b.Remove the remaining water in the oil cooler and water pump with compressed air;b.
c.
d.
e.
Eliminate the hydrogen in the rock drill accumulator and sign in the warning mark, tighten the wheel hub screws with a torque of 540Nm:Drain the water in the water purifier purification box:
Fill 1/4 tank of diesel in the fuel tank.
7.3Transportation
The whole machine and the separately transported parts must meet the requirements of water and land transportation and loading and unloading hoisting or self-loading. 7.4 Storage
The product should be placed in a dry, ventilated, non-corrosive, non-hazardous substance or gas warehouse or a place covered by a roof. For long-term storage, oil, gas and water should be removed. Anti-rust oil should be applied to all external processing parts, and the tires should be inflated regularly. Safety Assurance
8
To ensure the safety of operators, the product design should meet the requirements of Articles 8.1 to 8.3. 8.1 The operating part of the product should be equipped with a protective roof. 8.2
When a jam occurs, the anti-jamming system should be able to work automatically. 8.3 The product should be able to stop working automatically in any of the following situations: a.
b.
c
d.
When the current exceeds the rated current;
When the hydraulic oil level is lower than the calibrated oil level;
When a hydraulic system fails;
When the flushing water pressure is insufficient.
Additional Notes:
This standard was proposed and managed by Tianshui Rock Drilling Machinery and Pneumatic Tools Research Institute of the Ministry of Machinery Industry. This standard was drafted by Nanjing Engineering Machinery Factory, and the main drafters of this standard were Chen Hansheng, Deng Shuqiang, and Sun Qibiao.1 Inspection Category
Product inspection is divided into two categories: factory inspection and type inspection. 6.2 Factory inspection
6.2.1 Each product must undergo factory inspection. Only after passing the inspection can it leave the factory. The product quality certificate should be attached when it leaves the factory. 6.2.2 Factory inspection includes the following:
Main technical parameters, according to the provisions of Article 4.3: a.
b.
The correctness and movement of assembly, according to Article 4.4 .Provisions of Articles 1 to 4.4.7: Appearance Quality. According to the provisions of Article 4.4.8, c.
6.3 Type Inspection
6.3.1 In one of the following circumstances, plastic molding shall be carried out Inspection: a.
b.
c.
d.
e.
When there are major changes in design, structure, materials and processes After the product has been discontinued for a long time, when production is resumed: When there is a big difference between the inspection result and the last type inspection, and the product is normally produced after five years:
When the national quality supervision agency puts forward the requirement for type inspection , 6.3.2 The content of type inspection includes all contents of factory inspection and all technical parameters of measured products. 6.4 Sampling
6.4.1 Factory inspection is full inspection.
6.4.2 Type inspection is random sampling, and the number of samples to be inspected is one unit. 6.5 Judgment Rules
6.5.1 During factory inspection, if there are 1 to 2 minor defects in appearance, it can still be judged as qualified. If there are any defects in the assembly quality, it should be adjusted to pass. If there are unqualified items in the performance test, re-inspection is allowed. Once, if it still fails to meet the requirements of this standard, it will be judged as unqualified. 6.S.2 During type inspection, if there are any unqualified items in the technical parameters and performance tests that still fail after re-coating, the product will be judged as unqualified. 7 Marking, packaging, transportation and storage
7.1 Mark
The product should have a fixed product label in a conspicuous position and its content should include: 8.
b.
c.| |tt|| Product model and name:
Main product parameters:
Factory label:
d.
Manufacturer name:
e.
Manufacture date and product number. 7.2 Packaging | The drill arm and service platform are fixed with a special metal frame and covered with fabric. The thruster is packed in a wooden box. 7.2.3 Random technical documents are sealed and packed with moisture-proof materials. Include: a.
b.||tt| |c.
6
Product Certificate of Conformity;
Use and Maintenance Instructions;
Packing List;
d.
e .
Certificate:
Range accessories list.
JB/T6949-93
7.2.4 Before shipping the product, the following delivery preparations should be carried out; use compressed air to clear the remaining water in the oil cooler and water pump; b.
c.
d.
e.
Vent the hydrogen in the rock drill accumulator, sign the warning mark, and tighten each hub screw with a torque of 540Nm: Exclude water purification Purify the water in the tank:
Put 1/4 tank of diesel in the fuel tank.
7.3 Transportation
The complete machine and the parts transported separately must meet the requirements for water and land transportation, loading and unloading, lifting or self-moving. 7.4 Store
products should be placed in a dry, ventilated, non-corrosive, no harmful substance or gas warehouse or covered place. Long-term storage should eliminate oil, gas and water, and be stored in all external processing parts. Apply anti-rust oil and inflate tires regularly. Safety Guarantee
8
To ensure the safety of operators, product design should meet the requirements of Articles 8.1 to 8.3. 8.1 The operating area of ??the product should be equipped with a protective ceiling. 8.2
When a jam occurs, the anti-jam system should be able to work automatically. 8.3 The product should be able to stop working automatically when one of the following situations occurs: a.
b.
c
d.
When the current exceeds the rated current;||tt ||When the hydraulic oil level is lower than the calibrated oil level;
When the hydraulic system fails;
When the flushing water pressure is insufficient.
Additional notes:
This standard is proposed and administered by the Tianshui Rock Drilling Machinery Pneumatic Tool Research Institute of the Ministry of Machine Industry. This standard is drafted by Nanjing Engineering Machinery Factory. The main drafters of this standard are Chen Hansheng, Deng Shuqiang and Sun Qibiao.1 Inspection Category
Product inspection is divided into two categories: factory inspection and type inspection. 6.2 Factory inspection
6.2.1 Each product must undergo factory inspection. Only after passing the inspection can it leave the factory. The product quality certificate should be attached when it leaves the factory. 6.2.2 Factory inspection includes the following:
Main technical parameters, according to the provisions of Article 4.3: a.
b.
The correctness and movement of assembly, according to Article 4.4 .Provisions of Articles 1 to 4.4.7: Appearance Quality. According to the provisions of Article 4.4.8, c.
6.3 Type Inspection
6.3.1 In one of the following circumstances, plastic molding shall be carried out Inspection: a.
b.
c.
d.
e.
When there are major changes in design, structure, materials and processes After a long-term discontinuation of the product, when production is resumed: When there is a big difference between the inspection result and the last type inspection, and the product is normally produced after five years:
When the national quality supervision agency puts forward the requirement for type inspection , 6.3.2 The content of type inspection includes all contents of factory inspection and all technical parameters of measured products. 6.4 Sampling
6.4.1 Factory inspection is full inspection.
6.4.2 Type inspection is random sampling, and the number of samples to be inspected is one unit. 6.5 Judgment Rules
6.5.1 During factory inspection, if there are 1 to 2 minor defects in appearance, it can still be judged as qualified. If there are any defects in the assembly quality, it should be adjusted to pass. If there are unqualified items in the performance test, re-inspection is allowed. Once, if it still fails to meet the requirements of this standard, it will be judged as unqualified. 6.S.2 During type inspection, if there are any unqualified items in the technical parameters and performance tests that still fail after re-coating, the product will be judged as unqualified. 7 Marking, packaging, transportation and storage
7.1 Mark
The product should have a fixed product label in a conspicuous position and its content should include: 8.
b.
c.| |tt|| Product model and name:
Main product parameters:
Factory label:
d.
Manufacturer name:
e.
Manufacture date and product number. 7.2 Packaging | The drill arm and service platform are fixed with a special metal frame and covered with fabric. The thruster is packed in a wooden box. 7.2.3 Random technical documents are sealed and packed with moisture-proof materials. Include: a.
b.||tt| |c.
6
Product Certificate of Conformity;
Use and Maintenance Instructions;
Packing List;
d.
e .
Certificate:
Random accessory list.
JB/T6949-93
7.2.4 Before shipping the product, the following delivery preparations should be carried out; use compressed air to clear the remaining water in the oil cooler and water pump; b.
c.
d.
e.
Drain the hydrogen in the rock drill accumulator, sign the warning mark, and tighten each hub screw with a torque of 540Nm: Exclude water purification Purify the water in the tank:
Put 1/4 tank of diesel in the fuel tank.
7.3 Transportation
The complete machine and the parts transported separately must meet the requirements for water and land transportation, loading and unloading, lifting or self-moving. 7.4 Store
products should be placed in a dry, ventilated, non-corrosive, no harmful substance or gas warehouse or covered place. Long-term storage should eliminate oil, gas and water, and be stored in all external processing parts. Apply anti-rust oil and inflate tires regularly. Safety Guarantee
8
To ensure the safety of operators, product design should meet the requirements of Articles 8.1 to 8.3. 8.1 The operating area of ??the product should be equipped with a protective ceiling. 8.2
When a jam occurs, the anti-jam system should be able to work automatically. 8.3 The product should be able to stop working automatically when one of the following situations occurs: a.
b.
c
d.
When the current exceeds the rated current;||tt ||When the hydraulic oil level is lower than the calibrated oil level;
When the hydraulic system fails;
When the flushing water pressure is insufficient.
Additional notes:
This standard is proposed and administered by the Tianshui Rock Drilling Machinery Pneumatic Tool Research Institute of the Ministry of Machine Industry. This standard is drafted by Nanjing Engineering Machinery Factory. The main drafters of this standard are Chen Hansheng, Deng Shuqiang and Sun Qibiao.
When the current exceeds the rated current;
When the hydraulic oil level is lower than the calibrated oil level;
When the hydraulic system fails;
When the flushing water pressure is insufficient.
Additional notes:
This standard is proposed and administered by the Tianshui Rock Drilling Machinery Pneumatic Tool Research Institute of the Ministry of Machine Industry. This standard is drafted by Nanjing Engineering Machinery Factory. The main drafters of this standard are Chen Hansheng, Deng Shuqiang and Sun Qibiao.
When the current exceeds the rated current;
When the hydraulic oil level is lower than the calibrated oil level;
When the hydraulic system fails;
When the flushing water pressure is insufficient.
Additional notes:
This standard is proposed and administered by the Tianshui Rock Drilling Machinery Pneumatic Tool Research Institute of the Ministry of Machine Industry. This standard is drafted by Nanjing Engineering Machinery Factory. The main drafters of this standard are Chen Hansheng, Deng Shuqiang and Sun Qibiao.
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