Wheel type 酣 酣 过 过 过 舸 鹏 鹏 鹏 鹏 鹏 鹏 鹏 鹏 鹏 沂 沂 沂 沂 沂 沂 迟 迟 迟 迟 迟 迟 迟 迟 迟 迟 迟 迟 1 . 斗 斗 斗 斗 斗 斗 斗 1 1 1 1 1 1 1 1 1 1. 8. Reinforcement angle steel 9. Shovel plate 10. Strengthen the strength of the plate loader bucket, welding the main blade and side blade made of special wear-resistant steel to the bottom cutting edge and side cutting edge of the bucket; To increase the rigidity, the root reinforcing steel is welded along the length of the bucket in the upper part of the bucket wall, and the bottom reinforcement plate is welded to the bottom of the bucket wall. The connection corner between the inner wall and the side plate is welded with a reinforcing plate; the upper part of the bucket is welded. The upper baffle will increase the bucket capacity and prevent the material from spilling backwards when the bucket is lifted up. The reinforcing plate is used to weld it to the side wall. This type of standard bucket bucket is mainly used for a wide range of applications such as sand and stone loose soil coal refuse and other materials.

The original bucket. 1In the user's continuous high-intensity working conditions, use the welding tear excessive wear and the phenomenon of falling of the material in the lift.

We believe that it is mainly due to the fact that users do not use super-intensity of material density; the lack of strength safety factor of the bucket is also a reason that cannot be ignored. In order to accurately determine the stress distribution and strength safety factor during use, we conducted a finite element analysis of the bucket in cooperation with the Department of Mechanics of Jilin University of Technology. The calculation results show that the strength safety coefficient at the bottom of the original bucket structure under the symmetrical distribution vertical load model is insufficient. Need to strengthen. At the same time, shovel; Bucket in the shovel loading by the digging resistance is also an important cause of damage. However, when the bucket is raised to a high position, the material is spilled backwards because the level of the baffle in the upper part of the bucket is not enough. For this reason, we propose the following bucket improvement design scheme. The connection extends to the front end of the bucket bottom, and the two sides are sealed with a wedge-shaped plate into a box-shaped structure, which greatly increases the strength of the bottom of the bucket. Meanwhile, the shoveling plate also extends upwards to the reinforcing angle steel, and the rigidity and strength of the skeleton structure are very high. Big mention.

The reinforcing plate is used to weld the upper part of the bucket wall to the side wall. The upper part of the bucket wall is increased in size along the length of the bucket body to increase the rigidity of the upper part.

According to the characteristics of bulk material shoveling operations and the user's experience in the use of feedback, and statistical calculations and analysis of results, etc., the bottom of the bucket wall with 7, upturned structure to reduce the scraping resistance.

In response to bucket wear, we installed a wear plate to protect the teeth of the bucket teeth. 1. Bucket teeth 1. The main blade plate 4. The bucket wall 5. The side plate 6. The reinforcement plate 7. The reinforcement angle steel 8. The shovel blade 9. Strengthen Plate 2, Torn, male disc Fuzui perforated material using high strength and high wear-resistance cast steel material made of the main blade and the bottom widened side blade, in the side plate welded wear-resistant reinforcement plate and other measures to reduce the bucket easy Wear of the wear parts, but also according to the user's special requirements in the part of the wear surface, such as hardfacing, etc., the upper baffle of the reinforcement bucket 5 is removed, and according to the movement trajectory, the straight wall of the bucket wall extends upwards and lengthens. Dimensions, thoroughness Solve material backwards and ask questions.

Through the above design improvement and manufacturing precision and other measures, the overall rigidity and strength of the bucket are raised, and the influence of welding deformation and welding internal stress is reduced. After the implementation of the improved scheme, the reliability of the loader bucket of our company is greatly improved. Port DC motor excitation coil ground fault sharp Liu Liping Taishan Jianshan Mining Co., Ltd. Sun Shoude Shanxi Xiaofanshan iron ore pipeline iron ore processing technology designed by the United States, 51 companies, is a domestic advanced level. In the normal slurry transportation process, such as sudden stoppage, the slurry can not accumulate in the 102krn long pipeline for more than 8h. Otherwise, the slurry will easily sink, deposit and even cause the pipeline to be scrapped. At present, only the diaphragm pump is put into operation and there is no standby pump backup motor. On April 4, 1998, the main pump suddenly tripped and stopped. The control panel was marked F005. After inspection, the excitation coil was grounded. Clever reason analysis I. This DC motor has manufacturing quality question, excitation line, a little grounded. Control 3 system power supply system is phase-phase system 012 neutral point grounding system, current helmet through the phase line air switch rectification part of the excitation coil to the ground and the neutral point to form a 4 loop, short circuit current to make the air switch trip, the main pump motor loss of magnetic Trip. Since there is no spare coil and the repair period is long and cannot be waited for repair, emergency measures must be taken to make the system operational. Between the air switch 2 and the rectifier bridge, an isolating transformer with a capacity of 15 to 6 is added between the counter and the rectifier bridge, and the control power supply is isolated from the excitation coil. As a result, the 48 excavator bucket is magnetically isolated, so the short circuit cannot be formed.

With this method, no abnormality has been found in the operation of the main pump. The date of receipt was Jia Jingen, Jia Jinxiang, Dagang Jianshan Mining Co., Ltd., Mobile Division, Shanxi Queao 030304 Mine, which was put into operation in 1994. Especially after two years of production in 19971998, the buckets of electric excavators have reached 6 due to wear and tear. This is mainly due to the fact that the bucket is wearing heavily in front of the bucket's forearm's bucket hole, and the bucket's front arm rear arm can be fully used.

According to the wear of the bucket's forearm, the size of the cast patch material and the base metal 20 patch size are determined by the specific wear of the bucket's forearm, and then welded. The worn portion is cut off on the bucket according to the patch size.

Degrease the welding area and remove rust. Use an oxy-acetylene torch to cut the groove at the corresponding position of the forearm in accordance with the size of the patch groove. Grind the groove with an angle grinder. The electrode is made of stainless steel rod 102, DC reverse connection, current 40160. Welding rod Zhu Hongguang, Cheng 5 When welding, it is necessary to select the temperature and weather in the summer, thus avoiding the sudden change in temperature after preheating and welding, which can reduce the welding cost and reduce the labor intensity of workers. The cracks that appear in the bottom welding must be repaired and then continued. During the whole process of welding, short arcs with small currents should be used. Each welding should not exceed 50. After the welding, the welds should be lightly hammered to eliminate some of the stress.

f In this way, 6 buckets have been repaired, of which 2 buckets have been used for more than a year and no welding has occurred. The new bucket is worth more than 90,000 yuan. The cost of repairing the old bucket was 12,000 yuan. By repairing the old waste, it saved 468,000 yuan in spare parts funds. Mouth meat formula 偕 搌 搌 如 如 的 诅 诅 健 健 健 张 张 1 子 2 武 武 武 湖北 436 436 436051 中 重型 中 436 436 436 436 436 436 436 436 436 中 中. , can not drive normally in the past six months. And 32! When the filter size is fine, the water content of the filter cake will be worse when the ball mill smashes the car again.

1 filter plate transformation vacuum filter rely on vacuum as a dehydration power, so maintain a good seal, so that it has a high degree of vacuum 450600, 1 mercury column, which is 0.0590.08, to improve the filter effect reduces the filter cake moisture It is very important 1 Filter After replacing the filter plate at the end of 1998, the dewatering effect of the test run was not good. 13 After inspection, it was found that the welding between the filter plate and the spacer plate was not fully welded and penetrated, and there was no welding at the joint between the spacer plates. The running style is serious. After the test, the dehydration effect is still not very good. After careful inspection, it was found that the end of the barrel was running at the end of the bead.

This is because the hole of the filter plate is drilled too far. Because there is a bead on the edge, the design of the bead is not compacted. This is a question of filter plate design and processing, such as cutting the filter plate too much. We took the external force to compress the rubber bead method, cut the end of the original rope, welded the angle iron, opened the hole in the angle iron, and welded 10 holes in the hole, the mother, with 10 bolts pressing the rubber bead surface 5 A thick flat iron compresses the flat iron. The flat iron presses the rubber strip and blocks the hole on the edge of the filter plate. The rubber layer serves as a seal to eliminate the running wind.

After the test, it worked well.

1 The filter was operated for a total of 2537 hours from the month to the July before it was processed. The average monthly output was only 1051 when 362 units were operated. After the treatment, the average monthly output was 4045. The benefits are substantial.

I 2 filter plate transformation process Chao iron ore plant filtration system vacuum line is too long, large loss along the line. The degree of vacuum before the 5th filter is only 0.04, 8 or so, and then through the wrong gas pan wrong gas seat, the degree of vacuum into the filter chamber there is a fixed loss. 32, filter wrong gas pan wrong gas seat joint area size 1. The vacuum channel on the wrong gas seat is a burning, 1 hole.

The vacuum channel on the wrong gas tray is a trapezoidal hole with a bottom of 20, a bottom of 14 and a height of 90,1. From the point of view, the actual vacuum channel on the wrong gas tray is a trapezoidal hole with a lower bottom 14, an upper bottom 18, and a high 5,0. The cross-sectional area of ​​the actual vacuum passage on the wrong gas tray is 8001. The cross-sectional area of ​​the vacuum passage on the wrong gas seat is ll962.50mm2. That is, the utilization rate of the vacuum passage on the wrong gas seat is only 4I. The degree of vacuum from the fluid cannot be filtered. Machine needs. Therefore, in the case of a fine particle size of the slurry, the filter cake does not reach the required fine particle size and has poor water permeability. In order to meet the requirements of the filter cake, only the vacuum pump is opened. Wasted energy pump vacuum pump to control the 16 holes are wrong to go to 16 shirts, moisture filter filter cake moisture, we must ensure that the filter has a certain that people should pay attention to the following points.

When the steel filter plate is used, full welding is required between the filter plate and the spacer plate, and the weld is to be welded through. Spacing between the spacers should also be full and the welds should be flat.

The plate should be left 2525 Yangyang vacuum channel as large as possible, as little as possible elbow, the joint between the channels; change should be small. I Gas seal is better. f The connection between the vacuum tube and the wrong gas seat should be sealed. The process of machining the circumferential hole of the mill barrel with an erzhi misplaced gas seat Liu Suhua Wen Ruiling Zhongxin Heavy Machinery Co., Ltd. Light Ring Plant Luoyang 471039, Henan, milled tube body shirt 000, axial length 7450, total s The boring holes in the left and right halves of the shirt collar are staggered. In the past, the number of holes in the cylinder body was small, and the precision was low. Therefore, all the holes were drilled on the flat plate before welding, and were then rolled into a cylinder. The requirements for the holes in the cylinder are 775±0.75 in the axial direction and 20 0.75 in the circumferential direction, respectively. 30±0.75 in the circumferential direction. The traditional method can not guarantee the accuracy of the position of the hole, so it needs to be processed after the coil welding. In addition, there is no platform that exceeds 7,1, and it is not possible to provide benchmarks for measuring cylinders from the outside, but can only be done using the cylinder itself. Both ends of the I2 cylinder body are reinforced with Tenian Steel Tensile Support. The angle of rotation of the cylinder is about the angle of each welding angle steel, the angle steel top welding plate, so that the steel plate and the cylinder flange are in the same plane to find the center of the cylinder body; The two ends of the body are respectively found at the center of the circle to make a cross centerline, and lead to the outer flange on the round surface; I use a thin wire with a root length of about 15,1, with both ends of the weight hanging on the barrel, With the overhead crane engaged, rotate the cylinder body and move the steel wire so that both ends pass through the cross centerline that has been made, and the cross centerline is drawn on the cylinder wall to draw four axial lines; I is to draw four axial lines defined by four With reference to both end flanges, the barrel is divided into two zones, a 1-hole zone and a 3-hole zone in the length direction. And in its interface for the vertical line, so that the cylinder is divided into 8 areas; respectively, in each area for the axial parallel lines, and the separation of the hole as a benchmark to draw out the hole, draw a hole line; strict boring machine Drill holes.

Practice has proved that the accuracy of processing the cylinder bore according to this process is in full compliance with the paper requirements. mouth

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