This standard specifies the safety technical requirements for rotary mowers. This standard applies to rotary mowers (hereinafter referred to as mowers) that are mainly used for harvesting forage grass. JB 8520-1997 Safety requirements for rotary mowers JB8520-1997 Standard download decompression password: www.bzxz.net

The Machinery Industry Standard of the People's Republic of China
JB8520-1997www.bzxz.net
Rotary Lawn Mower
1997-U3-04 Issued
Safety Requirements
1997-10-01 Implementation
Ministry of Machinery Industry of the People's Republic of China
JB8520-1997
This standard is for the technical requirements of rotary mowers. The main changes are as follows:
In the safety design requirements, the requirements for the paint of rotary parts are removed; the requirements for protective equipment and fixed devices are modified; in the safety use requirements, the requirements for the connection between the mower and the tractor are added, and the safety requirements for operators are clarified.
This standard is the general standard of the machinery industry. From the date of effectiveness of the standard, it will replace ZI3B92007-S8. This standard is proposed by the Ministry of Industry and Information Technology of Huhe Special Animal Husbandry Machinery Research Institute. The drafting unit of this standard is: Huhe Special Animal Husbandry Machinery Research Institute. The main drafters of this standard are: Zhi Yiping, Xia Xiurong. Scope
Machinery Industry Standard of the People's Republic of China
Rotary Lawn Mowers
Safety Requirements
This standard specifies the technical requirements for rotary lawn mowers! The standard is applicable to small rotary lawn mowers or grass-making machines (hereinafter referred to as simple lawn mowers) mainly used for animal husbandry. 2 Referenced Standards
JR 852U--1997
Warning 2B07E5
The following standards contain the provisions that constitute the provisions of this standard through reference in this standard. The following versions are valid at the time of publication of this standard. All parties who use this standard should explore the possibility of using the following standards. CE9395-8 Agricultural and Forestry Machinery Safety Sign XE4_8-85
3 Safety Design Requirements
Rotary cutter,
3.1 The design of the machine meets the requirements of this standard: 3.2 The winter operation parts of the machine should be protected and equipped. 3.3 The outer span of the dynamic shaft is fully protected. 3.4 The distance between the scraper blade of the rotary cutter and the protective device is not less than 50mm. If the protective device is set as a special structure. When the distance between the blade and the working surface is lower than the minimum height +3mm, the distance from the working surface to the minimum distance is 15cmmm (see the surrounding): the protective device
working surface
3.5 The single machine should be equipped with an overload protection device,
3.6 The lifting and lowering mechanism of the machine should be fully controllable, and the connection device of the machine should be checked and equipped with a locking device. 3.7
3.8 The machine should be equipped with a locking device for the main operating parts. 3. When the machine is in free operation, the knife disc on the rotating shaft should be able to rotate at a distance of less than 200° and must have a necessary locking device. 3.11 The blade should comply with the specification of N141 and should be safely connected with the disc. Approved by the Ministry of Machinery Industry in 1997, implemented on October 1, 1997, JB 8520-1997. 12 The machine should have warning signs at risk locations. Warning signs should comply with the provisions of G10396. 4 Safety requirements: Before using the machine, the product must be properly inspected and used. The user manual contains detailed safety regulations, including the following: 4.1 Before operating the machine, check and avoid the firmware, coupling parts, rotating parts and protective devices. 4.2 Before operation, carefully check the blade, blade locking nut and other parts of the machine for wear and damage: 4.3 When a machine fails during operation, it must be stopped and repaired. 4.4 When the machine is in operation, the machine must be stopped. 4.5 Young people who have not traveled more than 16 hours and those who do not meet the requirements of machine operation are strictly prohibited from working. 4.6 When operators are sick or too thin, the machine is operating, 4. When the grass scraper is pulled, the tractor is in an empty state.
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