GB 16151.4-1996 Technical conditions for safe operation of agricultural machinery Stationary diesel engines GB16151.4-1996 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Safety technical requirements for agricultural machinery operatingStationary diesel engine
1 Subject content and scope of application
GB 16151.4—1996
This standard specifies the technical requirements for the operation safety of the engine room and installation, complete machine, transmission components and protective devices of stationary diesel engines. This standard is applicable to the operation safety technical inspection of small and medium-power stationary diesel engines (hereinafter referred to as diesel engines) that are matched with irrigation, threshing, processing, power generation and other operation machines. bZxz.net
2 Reference standards
GB1859 Determination of sound power level of internal combustion engine noise Quasi-engineering method GBn259 Noise limit value of small and medium power diesel engines GB10395.1 Safety technical requirements for agricultural and forestry tractors and machinery Part I: General provisions GB10396 Safety signs for agricultural and forestry tractors and machinery 3 Engine room and installation requirements
3.1 The engine room must be able to shade, protect from rain and wind, and have good lighting and ventilation conditions. The use of diesel engines outdoors is limited to temporary operations such as pumping water on construction sites and threshing in the field.
3.2 Diesel engines in the engine room: the distance from the exhaust pipe side to the wall or other equipment is not less than 1m, and the distance from the front and cover side of the diesel engine to the wall or other equipment is not less than 1.5m. 3.3 The floor of the engine room is flat, and the layout of pipes and wires must not affect walking or operation. No debris is allowed to be piled up indoors to ensure convenient operation and inspection.
3.4 ​​It is strictly forbidden to bring flammable, explosive and corrosive chemicals into the machine room. The machine room should be equipped with fire extinguishers, sand boxes and other fire prevention equipment. 3.5 The foundation of the diesel engine installation site is solid; the base foundation should be cast according to the dimensions and requirements specified for each model; the machine should be installed firmly on the foundation and keep it level; the temporary foundation must be fixed firmly with piles or heavy objects, and there should be no obvious vibration, displacement, tilt and sinking during operation. 3.6 When the synchronous transmission is directly connected with the operating machine, there should be a common foundation, and the center lines of the main and passive shafts of the unit are required to be on the same axis. 3.7 The installation requirements for units that are not on the same foundation as the operating machine and use belt drive are as follows: 3.7.1 The center distance of the flat belt pulley is generally five times the sum of the diameters of the active and passive pulleys, and the minimum is two times. For cross-belt drive, a larger center distance should be used;
3.7.2 The axes of the active and passive pulleys should be parallel; 3.7.3 When the drive is open, the tight side of the drive belt should be placed below the active pulley as much as possible; 3.7.4 The rotation center planes of the active and passive pulleys (the center plane of the groove width for V-belt pulleys) should be in the same vertical plane. Approved by the State Administration of Technical Supervision on January 12, 1996, and implemented on April 1, 1996
4 Diesel Engines
GB16151.4—1996
4.1 The signs, numbers, and markings are complete and the handwriting is clear; the license plate is intact and placed in the specified position. 4.2 The appearance is neat, the parts and instruments are complete, the lead seals are intact, the connections are tight, the parts are easy to operate, and there shall be no modifications that hinder operation and affect safety.
4.3 The starting performance is good. The starting auxiliary devices and measures are allowed to be used. It can start smoothly under the following ambient temperature and starting time conditions. The number of starts shall not exceed 3 times, and the interval between each start shall be 2 minutes. a. Manual cranking: not less than 5℃, each time shall not exceed 30s. b. Electric starting: not less than 0℃, each time shall not exceed 5s. c. Gasoline engine starting: not less than -5℃, each time shall not exceed 2 minutes. 4.4 The rapid and maximum idling speeds are normal, the operation is stable, there is no abnormal sound, and the operation can be stopped by closing the throttle or pulling out the flameout button; under normal temperature and load, the exhaust smoke color is normal. 4.5 The power is not less than 85% of the rated power, and the fuel consumption rate is not higher than 15% of the rated fuel consumption rate. : 4.6 The water temperature, oil temperature, oil pressure and fuel pressure during normal working hours meet the specified requirements. 4.7 All pipe joints, valves, screw plugs, sealing washers, oil seals, water seals and joint surface gaskets are complete and intact, tightly combined, without oil leakage, air leakage and water leakage.
4.8 The noise meets the requirements of GBn259. The measurement method is carried out in accordance with the provisions of GB1859. 4.9 Under dusty conditions, the air intake system must take air in a relatively clean air environment, and the air filter must have a strong filtering and dust removal ability. There must be a dust-proof mesh cover on the outside of the radiator. 4.10 If there is no radiator and water stored in a sink is used as circulating coolant, the water level in the sink must be higher than the center of the circulating water pump impeller, and the water storage capacity should meet the heat dissipation requirements of the diesel engine.
4.11 All electrical equipment works normally; the electrical circuits and control devices are intact, neatly arranged and securely installed: the batteries are clean and intact, and the normal voltage is maintained.
4.12 Nighttime operation must be equipped with lighting devices so that the operator can see the various parts of the machine, the instruments and the environmental channels clearly. 4.13 It is forbidden to use barrels as fuel tanks.
4.14 The fuel tank should be away from exposed electrical connectors and electrical switches in the room. 4.15 When working in the machine room, the exhaust pipe must be extended to the outside, and the pipe should be bent as little as possible and the length should be as short as possible. 4.16 According to the fire protection requirements of the operation, determine whether it is necessary to set a device to extinguish or collect exhaust gas sparks at the exhaust pipe. 5 Transmission components and protective devices
5.1 For units with direct synchronous transmission, the corresponding coupling must be used between the main and driven shafts. When installing the coupling, an axial clearance greater than the sum of the two shaft movement should be reserved.
5.2 The pulley shall be free of cracks and the working surface shall not be damaged; if there are individual notches in the V-belt pulley groove that do not affect the use, the sharp edges and burrs at the notches must be removed.
5.3 The pulley with a speed exceeding 400r/min and a mass greater than 5kg should be checked for static balance so that it can stop at any position. 5.4 Install the shaft of the pulley and visually check that the shaft head is not bent. 5.5 The pulley and shaft must not be loose. The flat key must be tightened with a screw and locked with a nut: After the hook wedge key is tightened, the end face of the hub should leave a space of no less than 10mm from the hook head, and the hook head part should not protrude from the side of the pulley. 5.6 Flat belt drive:
5.6.1 The transmission belt should be clean and free of cracking, delamination and other damage; 5.6.2 According to the number of layers or thickness of the transmission belt, the specifications of the belt buckle or belt bolt should be correctly selected to ensure the strength of the belt joint; 5.6.3 When the belt buckle is connected, the cut of the belt should be perpendicular to the edge of the belt, and the belt buckle pin shaft should not protrude from the edge of the belt; 5.6.4 When the nut or rivet is overlapped, the countersunk part of the fastener should not protrude from the inner surface of the belt, and the interface of the outer belt should face the direction of movement. After the nut is tightened, the bolt protrudes 1 to 3 pitches from the nut. 5.7V belt drive:
GB 16151.4--1996
5.7.1 The tape should be clean and intact, without cracking or delamination; 5.7.2 The model and quantity must be consistent with the groove type and number of the pulley; 5.7.3 When multiple belts are driven, the circumference and age of the tapes of the same wheel system should be basically the same. 5.8 The tension of the transmission belt must be appropriate.
5.9 Protective covers (plates, nets) must be installed in the exposed transmission parts and parts with a temperature exceeding 70°C in the direction where they may come into contact with the human body. 5.10 For long transmission belts or parts where protective covers cannot be installed, safety fences can be installed to leave the necessary safety distance. 5.11 All protective devices should comply with the provisions of GB10395.1. 5.12 Eye-catching turning arrows, relevant signs and safety warnings should be painted on the relevant parts or protective devices of the unit. Safety signs should comply with the provisions of GB10396.
Additional Notes:
This standard was proposed by the Ministry of Agriculture of the People's Republic of China. This standard is under the jurisdiction of the Agricultural Mechanization Management Department of the Ministry of Agriculture. This standard was drafted by the Jiangsu Agricultural Machinery Safety Supervision Institute, Nantong Agricultural Machinery Safety Supervision Institute, and Nantong Agricultural Mechanization Research Institute.
The main drafters of this standard are Xuan Yinian, Ding Bocheng, Fu Xiaojun, Shi Shuwen, and Xie Chuanxi. 14
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