Improve the service life of the oil pump plunger spring
Guilian No. 4 combine harvester grain box reconstruction program No. 4 rice and wheat combine harvester feed amount 1 kg / sec, productivity 2-4 mu / hour, supporting tractor power 18 * 22 kW, transport state minimum ground clearance 280 Millimeter, the forward speed is 2-5 km/h during operation, the harvester has a weight of 800 kg, and the grain bin is equipped with about 300 kg of grain. It can carry water in paddy fields with a mud foot depth of no more than 150 mm. Mainly equipped with tractor models such as the Benye 2544 wheel drive tractor, the power is 17.7 kW, the structural quality is 1340 kg, and the minimum ground clearance is 262 mm. Harvesters, grain, and tractors weigh a total of about 2,240 kilograms, plus a total weight of more than 2.5 tons. Harvesting 1/4 hour (0.75 acres of rice cut) when working at a yield of 3 acres per hour in a 400-kil per mu paddy field can harvest more than 300 kilograms of grain, ie less than 15 minutes when the grain bin is full and the grain must be unloaded. According to the actual production, it is necessary to select the shallow water in the paddy field, pad the straw, and put the plastic cloth on the straw to unload the rice on it, and then carry it away. It is difficult to avoid repeated walking on the harvesting path of the harvester during the process of unloading the tractor. Due to the repeated walking of the wheel structure, it is easy to cause subsidence in the deeper part of the mud. The barn-style structure is too heavy to walk with the valley, which often makes the user suffer from being trapped in the mud. For this reason, in the place where the rice is not released by water, the user requests that the grain box of Guilian No. 4 harvester be changed to the grain receiving table and converted into a bagged structure. After contacting the Guilin Combine Harvester General Plant, the three-package service department and the technical department of the plant will negotiate and formulate a modification plan. The modified parts are mainly modified by the parts of Guilian No. 3 harvester. Guilian No. 3 harvester feeds 25 kg / s, productivity 2-4 mu / hour, the structure and Guilian 4 is too large, can be used. The main references are: 1, the grain outlet assembly, the valley auger assembly, the transmission and safety mechanism assembly; 4, the auger shell; 5, the support connector. This method of modification does not require too much "surgery", and only the corresponding large holes are opened in the corresponding parts of the original grain bin to assemble these components. In addition, the baggage handling crew table and the threshing drum drive belt guard are added. And change the assembly position of the lower guide plate of the grass cutting mouth, let the grass pass through the upper end of the excessive passage of the grain outlet to avoid poor grass drainage. The No. 3 harvester is equipped with a component to be disassembled, and the cover is installed in the opening of the grain bin modification, and the original can be restored to the grain bin structure. Harvesting or cutting wheat in shallow water depths can still be used in a warehouse structure to reduce the use of an auxiliary grain handler. (Xiao Jing Tang, the provincial agricultural machinery appraisal and promotion station) The long-term breakage of the plunger spring has always been a headache for maintenance personnel and the operator. The following is an analysis and discussion on why the plunger spring is easy to break and how to improve the service life of the plunger spring. . Tian Tian 1, plunger spring is an important part of the oil pump. The strength and flexibility of the county are slightly inconsistent with the requirements, and it is easy to break. The lost plug drags off the normal technical state, causing the sudden horsepower drop in the engine during the driving process, the work is unstable, the black smoke, the idle spring engine The speed is not stable, there is no strength on the uphill, and it is easy to lose the spring. Therefore, the plunger spring itself has poor quality and the material is unstable. The strength of the Liu is too strong or too weak. When the spring is tilted up and down, it is easy to make the spring break. When switching to a new spring, pick each spring to raise the oil pump column with a uniform spring, and then use a slight fire to burn the spring to return the fire to the fire. Life 2, diesel is clean, not only for the wear of the three precision parts of the oil pump, but also the number one enemy of the plunger spring is easy to break, so never use diesel with too much water or impurities; the driver is using and refueling In the process, we should pay attention to the following points: 1 The diesel used in the diesel engine should be refueled at the large gas station with the oil storage tank; 2 The dirty oil deposited on the bottom of the fuel tank and the thick filter should be discharged on schedule; 3 The diesel used in the diesel engine must pass more than 96 hours. Precipitation, refueling tools should be clean, it is best to use closed refueling; 4 periodically replace the diesel filter, only to ensure that the plunger spring is not broken due to the water and uncleanness of the diesel oil, especially after the flood or near the coastal area (Because the sea water is salty, entering the oil pump and breaking the spring due to corrosion), it is necessary to replace the diesel filter in time. 3. Whether the driver's standard use of the locomotive is another important reason for the spring to be easily broken. Some drivers are used to slamming the throttle a few times when they are just starting or stopping. This makes it easy for the springs everywhere to break due to the co-seismic movement, so the throttle should be smooth when starting or stopping. 4. When commissioning the installation of the oil pump, do not neglect the inspection of the axial clearance of the camshaft and the bearing. The axial clearance of the camshaft is too large, causing the rotational speed to be unstable, and the speed is suddenly and slowly, so that the spring is broken by the impact. For example, the No. 11 pump of a Dongfanghong bulldozer ignores the inspection of the camshaft bearing during maintenance, resulting in the test just installed. When the table is commissioned, the spring will be broken and the amount of oil in one cylinder will not be met. Because the bearing will wear, the camshaft at one end will sink down, so that the plunger of the oil pump will not rise to the specified oil output when the camshaft rotates. Point, so when debugging the oil pump, be sure to check whether the axial clearance meets the requirements. Generally, pull the camshaft by hand and pull it one by one, then press up and down to see if the axial clearance of the camshaft is too large or the bearing is worn. . If the left and right shaft clearance is too large, the copper gasket for the triangular flange should be removed; if the upper and lower clearances are too large, the bearing should be replaced and the clearance should be adjusted to 0.10 mm to ensure the smooth rotation of the camshaft, but pay attention to the bearing after the bearing is replaced. Rotating the camshaft should not feel the difficulty of turning, because the gap is too small, the oil pump body will overheat and burn the bearing to lock the bearing. 5, the engine is overloaded, especially uphill (down to page 28) Taihu TH, Putian District, Xindu Town Agricultural Machinery Station Zhu Zhifang Lin Yufeng can work reliably for a long time, to maximize the working efficiency of the harvester. 1. After the operation, thoroughly clean the machine, remove the dirt on the walking mechanism and the straw, weeds, remove the harvester header and external grain and debris, then start the machine, raise the header, and drive the working device. Run at high speed for 5~10 minutes to drain the residuals in the machine, then clean the outside of the harvester with pressurized water. Pay attention to the electrical components wrapped in plastic cloth, do not let the electrical components get water, mainly wash the header and the traveling mechanism. While washing, use a screwdriver, a trowel to remove the roller, balance the dirt in the wheel and the grass on the shaft, and walk the harvester to rinse it out. Finally, turn it on for 5~10 minutes, blow the remaining water on the machine and transport it back to the warehouse. Maintenance, open the auger cleaning window and grain bin discharge to remove debris and other debris from various parts, and remove the straw and weeds wrapped around the transmission parts, cutters, pulleys, chains, etc. 2, open the header, remove all V-type tape, check for serious defects such as burns, cracks, damage caused by excessive slip and aging, should not be used in time to replace, can be used to clean up. 3. Remove the Fuhe chain and clean the conveyor chain. Check whether the Fuhe finger is broken or worn. The damage should be replaced. Check whether the conveyor chain is stretched due to wear and tear. If it is too long, adjust it and then dip it into the oil. Medium lubrication. Remove the cutter assembly from the header to remove the dirt on the moving blade and the fixed blade. If the blade is broken, worn or deformed beyond the specified standard, it must be replaced, and adjust the gap between the movable knife and the fixed knife to make the front end of the moving and fixed blade. Contact with each other, there is a gap of not more than 0.5mm, the back gap is not more than 1.0mm, and there is no jamming by hand, and then butter is rustproof and hanged for storage. 5. Check the vertical state and the degree of fastening of the bow teeth on the main and auxiliary rollers. It is found that the bow teeth with broken deformation should be replaced, the loose ones should be tightened, and the cutting grass on the concave screen and the auxiliary drum concave plate should be inspected. The degree of tightness of the knife connection and the sharpness of the blade, the wear of the applied oil stone, the damage should be replaced. 6. Inspection and maintenance of the walking mechanism, jacking up the side of the locomotive, checking whether the roller, balance wheel and supporting wheel are flexible. If it is found that the bite should not be replaced, replace the parts in time and add the butter. Use the same method. Check the other side. In addition, for each year of operation, the roller and balance wheel should be removed and inspected and cleaned once. In particular, the bearing oil seal of the traveling mechanism is easily damaged, so that the mud water enters the bearing and the bearing is damaged. When the damage is serious, it should be replaced. Add butter. 7. According to the lubrication diagram of the combine harvester, the table and the instruction manual of the diesel engine, fully inject the lubricating oil and grease, replace the diesel filter element, clean the hydraulic oil filter, clean the air filter, replace the oil, and then re-install the removed parts according to regulations. After assembly, adjust the tension of each V-belt and conveyor chain to the specified value, and then test the engine for a period of time. After all normal, store the harvester in a dry, well-ventilated place. 8. Put the wooden board under the rubber track, put down the header, and put a wooden strip under the header, pull the throttle handle forward to the minimum throttle position, turn off the engine, pull out the key and keep it safely; Brake position, put each handle in the position of | leaving the | or |N|; open the engine drain to completely remove the cooling water in the engine; the fuel tank is filled with diesel to prevent rust in the tank; chain, belt The crawler belt and spring are all relaxed to prevent creep; remove the battery from the machine, replenish the electrolyte to the specified liquid level, fully charge, store in a dry and dark place, charge once every one and a half months, pay attention to when charging The lid of the filling hole is opened, the hydrogen gas is discharged, and the whole machine is covered with the matching woven cloth. (Continued from page 27) Pull too much cargo to make it overload and break, so when climbing uphill, when you feel that the climbing is gradually weak, you should shift gears in time. 6. The camshaft tappet is seriously worn, so that the plunger spring is swayed and twisted left and right. The fixed tappet screw is loose or the screw is too tight, so that it cannot be broken due to normal use. 7. The oil pump governor suddenly coasts. If the specified engine speed exceeds the specified engine speed, the spring will be broken due to sudden excessive fatigue. Therefore, measures must be taken to stop the vehicle immediately. 8, the oil pump governor does not add oil, so that the bearing dry grinding, resulting in poor coordination between the various components of the governor, and the spring is broken, it is necessary to add oil to the governor in a timely manner for half a month. 9. The drawbar is worn to the skew and causes the engine to swim. The speed of the oil pump is abnormal, causing the spring to break. Although the plunger spring is easy to break, it is a headache, but if you carefully summarize the cause of the fault and master the above points, the service life of the plunger spring will be prolonged. Organizer Eva Cases,Electronic Organizer Eva Case,Hard Travel Organizer Eva Case,Eva Hard Drive Case Dongguan C.Y. RedApple Industrial Limited , https://www.hpgbags.com