Some standard content:
National Standard of the People's Republic of China
Technical requirements for chainsaws
Portable chain saws-Technical requirements1 Subject content and scope of application
GB/T5392---1995
GB5392-85
Replaces 6
GB5393-—85
This standard specifies the type, model, performance, safety, inspection, packaging, marking and transportation requirements of chainsaws. This standard applies to portable chain saws.
2 Reference standards
GB/T5390
GB/T5394
GB/T5395
GB8136
Method for measuring ear noise
Production test method in forest area
Method for measuring hand-transmitted vibration
Terms for portable forestry machinery
GB10040.1
GB10040.2
GB10040.3
GB10040.4
GB10040.5
GB/ T13264
LY/T1198
LY/T1199
Determination of balance
Determination of strength
Minimum gap and size
Front hand guard
Determination of strength
Front hand guard size
Small batch counting sampling inspection procedure and sampling table for non-conforming product rate Chain saw
Sawing test method
Simplified method
Bench test method
3 Terms, types and basic parameters
Terms for chainsaws shall comply with the provisions of GB8136 on chainsaws. 3.2 The types and basic parameters of chainsaws are shown in Table 1. Table 1
Handle type
Handle type code
Approved by the State Bureau of Technical Supervision on December 8, 1995 Net mass of main engine
Net mass of the whole machine
Main engine specific mass
Engine
Maximum power
Implementation on June 30, 1996
Handle type
GB/T5392-1995
Table 1 (end)
Net mass of main engine
Handle type code
Net mass of the whole machine
Main engine specific mass
Engine
Maximum power
3.3 The model of a chainsaw is composed of the first Chinese pinyin letter of the word "oil" (oil) for chainsaw and the handle type code. The main parameter is the engine displacement, and its value is rounded to the single digit according to the rounding rules and standards. The variant code is represented by the Chinese phonetic letters A, BC. The model compilation method is as follows:
Variant code
Main parameter (expressed in displacement), cm
Handle type code
Model example:
High handle displacement 94cm Chainsaw after one modification Chainsaw YG-94A
Chainsaw displacement 78.5cm2
Technical requirements
4.1 Technical parameters
The manufacturer should provide the technical parameters listed in Appendix A (supplement) in the product manual of the chainsaw or related technical documents. 4.2 Environmental conditions
The chainsaw should be able to work normally under the temperature of ±40℃. 4.3 Performance in use
4.3.1 The sawing efficiency shall comply with the provisions of Table 2, and the determination of sawing efficiency shall comply with the provisions of LY/T1198. Table 2
Quantity, cm2
Sawing efficiency cm\/s
Sawing fuel consumption rate shall not exceed 80g/m2, and the test method shall comply with the provisions of LY/T1198. 4.3.3 The normal temperature starting time shall not exceed 30s. 4.3.4
Rapid performance: The chain saw shall be able to run stably for 5min at the lowest no-load speed. GB/T5392—1995
4.3.5 Idle flip performance: The chain saw shall be flipped after running stably for 5min at the lowest no-load speed, and the stay time at each position shall not be less than 3s, and the chain saw shall not be turned off.
4.3.6 The chain saw is not allowed to leak air or oil.
4.3.7 The specific mass of the main engine of the chainsaw is the ratio of the net mass of the main engine to the maximum power, which shall meet the requirements of Table 1. 4.4 Technical requirements for engines
4.4.1 The rated power of the engine is the maximum power, and its value shall not be lower than the requirements of Table 1, with a tolerance of -5%. 4.4.2 Minimum fuel consumption rate of the engine:
For chainsaws with a displacement greater than or equal to 70cm2, it shall not be greater than 544g/kW·h; for chainsaws with a displacement less than 70cm2, it shall not be greater than 557g/kW·h. 4.4.3 Durability performance requirements for engines:
After the durability test, the maximum power shall not drop by more than 5% of the calibrated value; a.
b. After the durability test, the minimum fuel consumption rate shall not increase by more than 8% of the calibrated value; c. The main components shall not be damaged after the durability test. 4.4.4 Component requirements:
4.4.4.1 Air filter
Assessed during the forest production test. If not cleaned for 3 hours, there will be no obvious effect on the engine performance. 4.4.4.2 Hand-pulled starter
According to the provisions of LY/T1199, the starter must be pulled 1000 times and must not be damaged. 4.4.4.3 Fuel tank capacity
The fuel tank capacity should be able to meet the requirement of continuous operation for 15 minutes under 90% maximum power conditions. 4.5 Test method
Except for the technical requirements of the test method, the test methods of the remaining requirements shall comply with the provisions of LY/T1199. 5 Reliability in use
5.1 The reliability of the use of the chain saw shall be assessed during the forest production test. The test method shall comply with the provisions of GB/T5394. 5.2 The reliability of use shall meet the following requirements; For chainsaws with a displacement of ≥70cm\, the sawing area of wood shall be ≥500m\, and for chainsaws with a displacement of <70cm\, the sawing area of wood shall be a.
≥400m\;
The main parts shall not be damaged after the test; b.
The reduction in sawing efficiency after the test shall not exceed 10% of the specified value; e.
The average trouble-free working time shall not be less than 10h. 6 Safety requirements
6.1 The strength of the handle of a short-handled chain saw shall comply with the provisions of GB10040.2. 6.2 The minimum gap and size of the handle of a short-handled chain saw shall comply with the provisions of GB10040.3. 6.3 All newly designed chain saws shall have a front hand guard, the strength of the front hand guard shall comply with the provisions of GB10040.4, and the size of the front hand guard shall comply with the provisions of GB10040.5.
6.4 The balance of the chain saw shall comply with the provisions of GB10040.1. 6.5 Newly designed chain saws shall be equipped with chain brakes and chain breakers. 6.6 The chip removal direction of the chain saw shall be towards the bottom plane of the chain saw. 6.7 The chain saw shall be equipped with a guide plate sleeve.
6.8 The sound level of the noise A at the ear of the chain saw operator shall not exceed the requirements of Table 3, and the measurement method shall comply with the provisions of GB/T5390. 9
High-speed idling
Full load
GB/T5392-1995
Sound pressure level
6.9 The hand-transmitted vibration value of the front, rear or left and right handles of the chain saw shall not exceed 15.0m/s under various working conditions, and the test method shall comply with the provisions of GB/T5395.
6.10 The chain saw shall be equipped with a flameout switch and placed in a convenient position for operation. The exposed high-voltage parts of the engine should be well insulated. 6.11
The exhaust direction of the engine should be away from the operator's face in the normal working position. 6.12
6.13 The chain saw should be equipped with an automatic chain lubrication device or a manual lubrication device, which can be lubricated normally under the specified working environment temperature of the chain saw, and the volume of the lubricating oil tank should meet the requirements of 3h continuous operation. 7 Inspection rules
7.1 Inspection classification
Chainsaw inspection is divided into factory inspection and type inspection. 7.2 Factory inspection
The factory inspection is determined by the manufacturer. After each unit is inspected and qualified, the product certificate is filled out before it is allowed to leave the factory. 7.3 Type inspection
Type inspection shall be carried out in any of the following cases: new products, converted and improved products;
Products that have been discontinued for more than two years and resume production; when required by the national quality supervision agency.
Type inspection items:
Sawing efficiency;
Sawing fuel consumption rate;
Normal temperature starting;
Rapid performance;
Rapid flip performance; bZxz.net
Gas leakage and oil leakage inspection;
Main engine mass ratio;
Engine maximum power;
Engine minimum fuel consumption rate;
Hand-operated starter performance;
Ear noise measurement;
Hand-transmitted vibration measurement;
Durability test;
Reliability test.
Durability test and reliability test shall be carried out by the enterprise every three years. 7.4 Sampling plan
The sampling plan shall comply with the provisions of GB/T13264. GB/T5392-1995
7.4.1 When inspected by a third party, the inspection procedure is as follows: the manufacturer's risk quality p. =24 (%), the user's risk quality p1 = 95 (%); a.
b. Use a single sampling plan, batch N = 25, sample size no = 2, qualified judgment number A. = 1, unqualified judgment number R. = 2; samples should be randomly selected from the entire batch;
d. Each unit product in the sample is inspected according to the type inspection items, among which the durability test and the use reliability test are evaluated separately according to the test report of the enterprise's validity period, and are distinguished as qualified or unqualified products; Type inspection item unit product unqualified judgment: except for the sawing efficiency and sawing fuel consumption rate, which must be qualified, other items are allowed to have one unqualified item. If there are more than items that are unqualified, the unit product is judged to be unqualified; f. Make a qualified or unqualified judgment based on the sample inspection results. If the number of unqualified products found in the sample is less than or equal to the qualified judgment number A., the batch is judged to be qualified. If it is greater than or equal to the unqualified judgment number R., the batch is judged to be unqualified. 7.4.2 When the user accepts the whole batch, the sampling plan shall be determined by negotiation between the manufacturer and the user. 8 Marking, packaging and storage
8.1 The product mark should be clear and durable, and placed in a conspicuous position on the outside of the chain saw. 8.2 The chain saw mark should include the following:
Manufacturer name or manufacturer's registered trademark; product name and model;
Main technical parameters: displacement, rated power, net weight of the whole machine; production date and product number.
8.3 The chain saw packaging should be firm, reliable, rainproof and moisture-proof. 8.4 Random documents:
Product certificate;
Packing list,
Product use and maintenance instructions.
8.5 The packaging box should have the manufacturer name, product name, total weight, overall dimensions, upward mark, and moisture-proof mark. 8.6 The chain saw should be stored in a ventilated and dry place. Anti-rust measures should be taken before leaving the market. Under normal transportation and storage conditions, the manufacturer should ensure that the machine will not rust within 6 months.
GB/T5392--1995
Appendix A
Technical parameters of chainsaws
(Supplement)
Net mass of main engine: Mass of chainsaw without guide bar, saw chain, fuel and lubricating oilNet mass of whole machine: Mass of chainsaw with specified guide bar and saw chain, without fuel and lubricating oilMaximum mass of whole machine: Mass of chainsaw with specified guide bar, saw chain, fuel and lubricating oilMass ratio of main engine: Net mass of chainsaw main engine and engine Machine maximum power ratio volume
Fuel tank volume
Saw chain lubricating oil tank volume
Guide bar effective length
Guide bar groove width
Drive chain thickness
Number of drive chains
Maximum chain speed: 1.33 times of maximum power speed or saw chain speed at maximum speed, whichever is smaller Drive sprocket
A6 overall dimensions
Note: 1) Excluding guide bar, measured to the front of the saw body. b.
Engine
Cylinder diameter x stroke
Maximum power
Maximum power speed,
Maximum no-load speed
Rest speed
Minimum clutch engagement speed
Carburetor type and model
Magneto type and model
Spark plug model
Fuel mixture ratio (volume)
Fuel consumption
GB/T5392-1995
Fuel consumption at maximum engine power Fuel consumption at maximum engine power Oil consumption rateA9Sawing performance
Sawing efficiency
Sawing fuel consumption rate
Sound pressure level
High speed idling
Full load
Chain lubrication
Consumption of lubricating oil of specified viscosity at maximum engine power speed using automatic lubrication system of saw chainAdjustable upper limit
Adjustable lower limit
Manual once
A12 Vibration
High speed idling
Full load
Additional instructions:
This standard is proposed by the Ministry of Forestry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Forestry Machinery. This standard is drafted by Harbin Forestry Machinery Research Institute of the Ministry of Forestry. The main drafters of this standard are Zeng Wanhua, Gao Dongge, Wang Shuqi and Wu Yingliang. r/min
g/kw·h
cm\/min
cm°/min
cm\/min
Engine
Bore x stroke
Maximum power
Maximum power speed,
Maximum no-load speed
Stop speed
Minimum clutch engagement speed
Carburetor type and model
Magneto type and model
Spark plug model
Fuel mixture ratio (volume)
Fuel consumption
GB/T5392-1995
Fuel consumption at maximum engine power Fuel at maximum engine power Consumption rateA9Sawing performance
Sawing efficiency
Sawing fuel consumption rate
Sound pressure level
High speed idling
Full load
Chain lubrication
Consumption of lubricating oil of specified viscosity at maximum engine power speed using automatic lubrication system of saw chainAdjustable upper limit
Adjustable lower limit
Manual once
A12 Vibration
High speed idling
Full load
Additional instructions:
This standard is proposed by the Ministry of Forestry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Forestry Machinery. This standard is drafted by Harbin Forestry Machinery Research Institute of the Ministry of Forestry. The main drafters of this standard are Zeng Wanhua, Gao Dongge, Wang Shuqi and Wu Yingliang. r/min
g/kw·h
cm\/min
cm°/min
cm\/min
Engine
Bore x stroke
Maximum power
Maximum power speed,
Maximum no-load speed
Stop speed
Minimum clutch engagement speed
Carburetor type and model
Magneto type and model
Spark plug model
Fuel mixture ratio (volume)
Fuel consumption
GB/T5392-1995
Fuel consumption at maximum engine power Fuel at maximum engine power Consumption rateA9Sawing performance
Sawing efficiency
Sawing fuel consumption rate
Sound pressure level
High speed idling
Full load
Chain lubrication
Consumption of lubricating oil of specified viscosity at maximum engine power speed using automatic lubrication system of saw chainAdjustable upper limit
Adjustable lower limit
Manual once
A12 Vibration
High speed idling
Full load
Additional instructions:
This standard is proposed by the Ministry of Forestry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Forestry Machinery. This standard is drafted by Harbin Forestry Machinery Research Institute of the Ministry of Forestry. The main drafters of this standard are Zeng Wanhua, Gao Dongge, Wang Shuqi and Wu Yingliang. r/min
g/kw·h
cm\/min
cm°/min
cm\/min
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