GB/T 20888.2-2020Machinery for forestry - Safety requirements and testing for pole-mounted powered pruners - Part 2: Machines for use with back-pack power source (English PDF)
林业机械 杆式动力修枝锯安全要求和试验 第2部分：背负式动力修枝锯
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
April 28, 2020
Implementation date
April 28, 2020
Scope
GB/T 20888.2-2020 is the English-translated version of 林业机械 杆式动力修枝锯安全要求和试验 第2部分：背负式动力修枝锯.
GB/T 20888.2-2020 is the Chinese standard "Machinery for forestry - Safety requirements and testing for pole-mounted powered pruners - Part 2: Machines for use with back-pack power source".
Its scope clause reads: This part of GB/T 20888 specifies the rod type with a piggyback power device and the power source transmits power to the cutting component via the transmission shaft The safety requirements and test methods of the design and structure of the knapsack power pruning saw (hereinafter referred to as "knapsack pruning saw").
In this section The cutting part refers to the saw chain and the saw blade doing reciprocating motion or rotating motion. This section proposes to eliminate or reduce the use of piggyback saws The methods of various hazards stipulated by the manufacturer stipulate the information requirements on safe operation provided by the manufacturer.
This section and the relevant chapters of Part 1 of GB/T 20888 refer to the relevant Reasonable and predictable all serious hazards when misused, but does not involve electric shock hazards caused by contact with overhead cables (contains in the instruction manual Except for warnings and recommendations) and the whole-body vibration hazard caused by the backpack-type power unit.
Note 1. At present, there is no standard test procedure for measuring the whole body vibration caused by the piggyback power plant. Note 2. See Appendix A for a list of serious hazards.
This section applies to products produced after its implementation. Its clauses include terms and definitions.
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Document preview — GB/T 20888.2-2020
National Standard of the People's Republic of China
- ICS
- 65.060.80
- Classification
- B 95
- Replacing
- GB 20888.2-2013
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Safety requirements and/or protective measures
- 4.1 General
- 4.2 Handle
- 4.3 Strap
- 4.4 Hydraulic and pneumatic pipes and hoses
- 5 Usage Information
- Appendix A (Informative Appendix) List of Serious Hazards
1 Scope
This part of GB/T 20888 specifies the rod type with a piggyback power device and the power source transmits power to the cutting component via the transmission shaft
The safety requirements and test methods of the design and structure of the knapsack power pruning saw (hereinafter referred to as "knapsack pruning saw"). In this section
The cutting part refers to the saw chain and the saw blade doing reciprocating motion or rotating motion. This section proposes to eliminate or reduce the use of piggyback saws
The methods of various hazards stipulated by the manufacturer stipulate the information requirements on safe operation provided by the manufacturer.
This section and the relevant chapters of Part 1 of GB/T 20888 refer to the relevant
Reasonable and predictable all serious hazards when misused, but does not involve electric shock hazards caused by contact with overhead cables (contains in the instruction manual
Except for warnings and recommendations) and the whole-body vibration hazard caused by the backpack-type power unit.
Note 1. At present, there is no standard test procedure for measuring the whole body vibration caused by the piggyback power plant.
Note 2. See Appendix A for a list of serious hazards.
This section applies to products produced after its implementation.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
GB/T 20888.1-2020 Safety requirements and tests for forestry machinery rod-type power pruning saws Part 1. Side-mounted power pruning
Saw (ISO 11680-1..2011, IDT)
GB/T 23821-2009 Safety of machinery to prevent the upper and lower limbs from reaching the safe distance of the hazardous area (ISO 13857..2008, IDT)
ISO 4413 General rules and safety requirements for hydraulic drive systems and their components (Hydraulicfluidpower-General rulesandsafetyrequirementsforsystemsandtheircomponents)
ISO 4414 General rules and safety requirements for pneumatic drive systems and their components (Pneumaticfluidpower-General rulesandsafetyrequirementsforsystemsandtheircomponents)
ISO 12100..2010 General principles of machinery safety design risk assessment and risk reduction (Safetyofmachinery-General principlesfordesign-Riskassessmentandriskreduction)
3 Terms and definitions
The terms and definitions defined in GB/T 20888.1-2020 and ISO 12100 and the following apply to this document.
3.1 Appliance
Installed with drive shaft sleeve, cutting accessories, sprocket guard and handle device.
3.2 Machine
A pole-type power pruning saw including a power source and appliances, a machine for cutting branches on tree trunks.
Note. An example is shown in Figure 1.
GB/T 24674 | LY/T 1346 | GB/T 21962 | GB/T 46640 | GB/T 19387 | GB/T 20888.1 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 20888.1-2020Machinery for forestry - Safety requirements and testing for pole-mounted powered pruners - Part 1: Machines fitted with an integral combustion engine
- GB/T 23821-2009Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs
ISO 11680 · ISO 13857 · ISO 4413 · ISO 4414 · ISO 12100
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