LY/T 1810: Evolution and historical versions
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PDF similar to LY/T 1810-2020
Basic data | Standard ID | LY/T 1810-2020 (LY/T1810-2020) | | Description (Translated English) | (Garden machinery Portable pole-type hedge trimmer powered by gasoline engine) | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B95 | | Word Count Estimation | 16,186 | | Date of Issue | 2020-12-29 | | Date of Implementation | 2021-06-01 | | Older Standard (superseded by this standard) | LY/T 1810-2008 | | Regulation (derived from) | Announcement No. 25 (2020) of the State Forestry and Grassland Administration | | Issuing agency(ies) | State Forestry and Grassland Administration | LY/T 1810-2020: (Garden machinery Portable pole-type hedge trimmer powered by gasoline engine)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Garden machinery-Gasoline engine powered portable pole-mounted hedge-
trimmers
People's Republic of China Forestry Industry Standard
Replace LY/T 1810-2008
Garden machinery powered by gasoline engine
Portable pole type hedge trimmer
2020-12-29 released
2021-06-01 implementation
Issued by the State Forestry and Grassland Administration
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces LY/T 1810-2008 "Garden Machinery Pole Power Hedge Trimmer", compared with LY/T 1810-2008, the main technical
The technical content changes are as follows.
-Modify the file name "Garden Machinery Pole Power Hedge Trimmer" to "Garden Machinery Powered by Gasoline Engine Portable Pole
Hedge trimmer";
-Modified the scope (see Chapter 1, Chapter 1 of the.2008 edition);
-Revised the normative references (see Chapter 2, Chapter 2 of the.2008 edition);
-Modified terms and definitions (see Chapter 3, Chapter 3 of the.2008 edition);
--Modified the use environment (see 5.1.1,.2008 version 5.2.1);
--Modified the test instrument parameters (see 5.1.2,.2008 edition 6.1.2);
-Modified the requirements for test hedges (see 5.1.3,.2008 edition 6.1.3);
-Modified the requirements for "supporting gasoline engines" and added corresponding inspection methods (see 5.2,.2008 edition 5.1.1);
--Modified the requirements and inspection methods of "starting performance" (see 5.3.1,.2008 edition 5.2.2 and 6.2);
-Modified the requirements and inspection methods of "idling performance" (see 5.3.2,.2008 edition 5.2.3 and 6.3);
---Added the requirements and inspection methods of "acceleration and deceleration performance" (see 5.3.3);
-Modified the inspection method of "Idle Speed Reversal Performance" (see 5.3.4.2,.2008 edition 6.4);
-Deleted the "operating rate" requirements and inspection methods (2008 version 5.2.7 and 6.6);
-Modified the requirements and inspection methods of "Maximum No-load Speed Stability" (see 5.3.5.2,.2008 edition 5.2.5 and 6.5);
--- Added the requirement and inspection method of "No-load reciprocating frequency of cutting device" (see 5.3.6);
-Modified the requirements and inspection methods of "tearing rate" (see 5.3.7.2,.2008 editions 5.2.8 and 6.7);
--- Added the requirement and inspection method of "maximum pruning diameter" (see 5.3.8);
---Added the "cutting width" requirements and inspection methods (see 5.3.9);
-Modified the requirements and inspection methods of "complete machine tightness" (see 5.3.11,.2008 edition 5.4.1 and 6.9);
--- Added the requirements and inspection methods for "starters" (see 5.4.1);
-Modified the "clutch" inspection method (see 5.4.2.2,.2008 edition 6.8);
---Added the requirements and inspection methods of "cutting device protective cover" (see 5.4.3);
--- Increase the inspection method of "cutter angle adjustment mechanism" (see 5.4.4.2);
--Modified the requirements of "strap" and added corresponding inspection methods (see 5.4.5,.2008 edition 5.3.6);
--Modified the requirements of "handle" and added corresponding inspection methods (see 5.4.6,.2008 edition 5.3.2);
--- Added requirements and inspection methods for "hydraulic and pneumatic pipes and hoses" (see 5.4.7);
-Modified the requirements and inspection methods of "handle vibration" (see 5.5.1,.2008 edition 6.10);
-Modified the inspection method of "the noise near the operator's ear" (see 5.5.2.2,.2008 edition 6.11);
--Modified the requirements of "electromagnetic compatibility" and added corresponding inspection methods (see 5.5.3,.2008 edition 5.1.2);
--Added the requirements and inspection methods for "exhaust pollutants" (see 5.5.4);
---Added "other safety" requirements and inspection methods (see 5.5.5);
- Deleted "control device", "throttle trigger", "engine stop mechanism", "protection of moving parts", "thermal protection",
"Engine exhaust direction", "protection of high-voltage live parts" and "fuel tank" requirements (2008 5.3.3, 5.3.4, 5.3.5,
5.4.2, 5.4.3, 5.4.4, 5.4.5 and 5.4.9);
-Modified the requirements and inspection methods of "reliability and durability" (see 5.6,.2008 edition 5.5, 6.12);
-Modified the requirements of "appearance quality" and added corresponding inspection methods (see 5.7,.2008 edition 5.6);
-Deleted the content of "Inspection Rules" (Chapter 7 of the.2008 edition);
-Modified the requirements for "marking" and added corresponding inspection methods (see 6.1,.2008 edition 8.1.1);
-Modified the requirements of the "Instruction Manual" and added the corresponding inspection methods (see 6.2,.2008 edition 8.4);
-Modified the requirements for "packaging" and added corresponding inspection methods (see 6.3,.2008 edition 8.2);
-Modified the content of "Appendix A (Normative Appendix) Main Technical Parameters of Pole Hedge Trimmers" (see Appendix A, Appendix A of the.2008 edition);
-Deleted "Appendix B (informative appendix) Hand-feel vibration frequency weighting characteristics" (Appendix B of.2008 edition);
-Deleted "Appendix C (Normative Appendix) Hand Feeling Vibration Measurement Data of Pole Hedge Trimmer" (Appendix C of the.2008 edition).
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed and managed by the National Forestry Machinery Standardization Technical Committee (SAC/TC 61).
This document was drafted by. Shandong Huasheng Zhongtian Machinery Group Co., Ltd., Yongkang Weili Technology Co., Ltd., Zhejiang Sanfengshi
Industry Co., Ltd., Zhejiang Yate Electric Co., Ltd., Zhejiang Yusen Bailian Tools Co., Ltd., Zhejiang Pinier Technology Co., Ltd.,
Zhejiang Zhongma Garden Machinery Co., Ltd., Jinhua Shangpu Electric Co., Ltd., Shandong Yongjia Power Co., Ltd., Guilin High-tech Zone
Kefeng Machinery Co., Ltd.
The main drafters of this document. Cui Jingguo, Liu Jidong, Yan Jin, Wang Qian, Hu Anguo, Yang Feng, Ding Junfeng, Tang Enchang, Zhu Daoqing, Liu
Guomin, Lu Jiangfeng, Liu Guiyang, Wang Junping.
This document was first published in September.2008, and this is the first revision.
Garden machinery powered by gasoline engine
Portable pole type hedge trimmer
1 Scope
This document specifies the terms and definitions of portable pole-type hedge trimmers powered by gasoline engines (hereinafter referred to as “pole-type hedge trimmers”),
Product model and basic parameters, technical requirements and test methods, signs, instructions for use, packaging, transportation and storage.
This document applies to side-mounted and knapsack-type hedge trimmers powered by gasoline engines.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated reference documents,
Only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document
file.
GB/T 191 Packaging, storage and transportation pictorial signs
GB/T 3766 General rules and safety requirements for hydraulic transmission systems and their components
GB/T 4269.5 Operator control symbols and other markings for portable forestry machinery
GB/T 5390 Forestry and Gardening Machinery Engineering Method for the Determination of Noise from Portable Hand-held Operation Machinery Powered by Internal Combustion Engines (Level 2
Accuracy)
GB/T 5395 Forestry and Garden Machinery Vibration Measurement Specification for Portable Hand-held Operation Machinery Powered by Internal Combustion Engines, Handle Vibration
GB/T 7932 General rules and safety requirements for pneumatic systems and their components
GB/T 9480 Rules for the compilation of manuals for agricultural and forestry tractors and machinery, lawn and garden power machinery
GB/T 13384 General technical conditions for packaging of mechanical and electrical products
GB/T 21398 Electromagnetic compatibility test methods and acceptance rules for agricultural and forestry machinery
GB 26133 Limits and measurement methods for exhaust pollutants from small ignition engines for non-road mobile machinery (China's first and second-order
segment)
JB/T 5135.1 General Small Gasoline Engine Part 1.Technical Conditions
JB/T 5135.2 General Small Gasoline Engine Part 2.Bench Performance Test Method
JB/T 5135.3 General small gasoline engine Part 3.Reliability and durability test and evaluation method
JB/T 11652 General specification of rebound rope starter for small gasoline engine
LY/T 1619 Garden machinery hand-held hedge trimmer powered by gasoline engine
LY/T 1621 Garden Machinery Product Model Compilation Method
LY/T 2569 Safety requirements and tests for hand-held hedge trimmers powered by gasoline engines for garden machinery
3 Terms and definitions
The following terms and definitions defined in LY/T 1619 apply to this document.
Pole-mounted hedge-trimmers
A cutting component is installed on one end of a working rod, and the other end of the working rod is connected to a power device through a clutch, a transmission shaft and a transmission box
A portable hedge trimmer that drives the cutting part to reciprocate and realizes the hedge cutting function.
4 Product model and basic parameters
The preparation of the product model is carried out in accordance with the regulations of LY/T 1621.
Product technical parameters should be given in the instruction manual and related technical documents, see Appendix A.
5 Technical requirements and test methods
General requirements
5.1.1 The pole-type hedge trimmer should be able to work normally under the following environmental conditions.
a) The ambient air temperature is -5 ℃～40 ℃;
b) The relative humidity of the air is not more than 90%;
c) The altitude is below 1 000 m.
5.1.2 The instruments and equipment used in the test shall be verified by the required metrological verification and are qualified and valid, and the minimum accuracy of the measured parameters shall meet the following requirements.
a) Vernier caliper, accuracy ±0.02 mm;
b) Steel tape or steel ruler, with an accuracy of ±1 mm;
c) Rotation speed measuring instrument, accuracy ±0.5%;
d) Thermometer, accuracy ±1 ℃;
e) Hygrometer, accuracy ±2%;
f) Barometer, accuracy ±0.5%;
g) Scale, accuracy ±0.01 kg;
h) Sound level meter, accuracy ±0.5 dB;
i) Stopwatch, accuracy ±0.1 s;
j) Anemometer, accuracy ±0.1 m/s;
k) Photoelectric tachometer, accuracy ±0.2%.
5.1.3 The hedges used in the test are common shrubs or small trees. Under normal operating conditions, the cutting edge (cutting width) of the pole-type hedge trimmer should be able to
Enough to cover all the hedges. The diameter of shrubs or small trees is 2 mm～6 mm, and the density of branches is uniform, in a square area of 300 mm×300 mm
No less than 40 branches. The object of work is the branches grown in the current year.
Matching gasoline engine
5.2.1 Requirements
The gasoline engine supporting the pole-type hedge trimmer shall comply with the regulations of JB/T 5135.1.
5.2.2 Inspection
The inspection of matching gasoline engines shall be carried out in accordance with the regulations of JB/T 5135.2 and JB/T 5135.3.
Overall performance
5.3.1 Starting performance
5.3.1.1 Requirements
The starting performance of the pole-type hedge trimmer should meet the requirements of JB/T 5135.1.
5.3.1.2 Inspection
The inspection of starting performance shall be carried out in accordance with the provisions of JB/T 5135.2.
5.3.2 Idle performance
5.3.2.1 Requirements
The pole-type hedge trimmer runs continuously for 5 minutes at idle speed, and the speed fluctuation rate should not exceed 10%. The cutting device should not follow the idle speed.
move.
5.3.2.2 Inspection
The pole-type hedge trimmer runs continuously for 5 minutes at idle speed, and the engine speed is measured every minute, and the average value and wave of the 5 measurements are calculated.
Momentum. Observe whether the cutting device is moving when idling.
5.3.3 Acceleration and deceleration performance
5.3.3.1 Requirements
After the rod-type hedge trimmer runs continuously for 5 minutes at idling speed, it should not be turned off when the throttle is suddenly increased to the maximum position, and it should be suddenly switched from the maximum position within 5 s.
Reduce the throttle to the idle position and should not stall.
5.3.3.2 Inspection
After running for 5 minutes in the calibrated idle speed range, suddenly increase the throttle to the maximum, and then suddenly reduce the throttle from the maximum position to the idle position within 5 seconds.
Observe whether the flame is turned off.
5.3.4 Idle speed rollover performance
5.3.4.1 Requirements
The side-mounted pole-type hedge trimmer is turned over after running for 3 minutes at idle speed, and the pole-type hedge trimmer should not be turned off.
5.3.4.2 Inspection
The fuel tank of the side-mounted rod-type hedge trimmer is filled with fuel about 1/8 of the volume of the fuel tank, and the idle rotation performance is performed after 3 minutes of operation at idle speed
test. From the horizontal position, the shaft makes the cutting head turn up, left and right 90° once, and tilt down 45° once. The staying time in various positions is quite a lot.
In 10 s, observe whether the pole-type hedge trimmer is out of flame.
5.3.5 Maximum no-load speed stability
5.3.5.1 Requirements
The pole-type hedge trimmer is subjected to a high-speed no-load test at the highest speed, and it runs continuously for 5 minutes. There should be no abnormal noise, and the fasteners should not be loose.
The volatility should not exceed 10% of the calibration value.
5.3.5.2 Inspection
Make the pole-type hedge trimmer run for 5 minutes without load at the highest speed, measure the engine speed every minute, and calculate its average value and wave
At the same time, check whether there is abnormal noise and whether the fasteners are loose.
5.3.6 No-load reciprocating frequency of the cutting device
5.3.6.1 Requirements
The no-load reciprocating frequency of the cutting device at the maximum speed of the rod-type hedge trimmer should not be low...
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