0 The control angle of the Yamagata Region 2 is controlled. However, in the event of an emergency commutation, the slip not only increases the working resistance, but also becomes easily blocked and becomes the dead point of the organization. After the above analysis and calculation, the small eccentric angle of the rod end joint bearing is the main reason for the poor speed control performance. In the case that the rod end joint bearing with larger eccentricity angle cannot be found, the following improvements have been made to the speed regulation mechanism. The pedal 1 is welded directly to the rocker arm, and the connecting rod 2 and the pedal hinged shaft 4 are removed in 1 and, if changed, the dead point of the mechanism is cleared, so that the reliability is greatly improved; the resistance of the mechanism is reduced, and the operation is easy; Larger organization free trip, speed control function enhanced; late maintenance, reduced maintenance costs 3 port 1650 single-cylinder hydraulic cone crusher causes oil analysis and transformation Zhao Lianxin Li Wenyu Shandong Gold Mountain Gold Mine Mineral Processing Plant Shandong Laizhou 261442 Mine, 650285 And, 16500 single-cylinder hydraulic cone crusher 1 heavy manufacturing domestic use very few units, the equipment was put into use in October 1988, the lubricant is large, the melon out of more than 5,4 per day, and into the ore seriously affect the Selecting and dismantling production has become difficult and difficult. The machine uses concentrated thin oil lubrication, Lubricant Road. Lubricating oil is divided into two ways. The road lubricates the transmission shaft; the road lubricates each friction pair of the main shaft from the lower end of the main shaft. After more than three years of operation observation and recording, it was found that when the replacement of the new crushing wall and the rolling wall is less, the oil is thrown off. It is impossible to throw pressure oil into the drive shaft. Because it does not have any passage with the outside world, it can only enter the lower end of the main shaft. The pressure oil from the lower end of the main shaft is divided into two groups. The road is up the gap between the eccentric sleeve and the body bushing. There is no access to the road between the eccentric sleeve and the body bushing. Therefore, it is not possible to choose oil rejection. The other way is that the oil return device set up along the gap between the main shaft and the main shaft bush up to the lower end surface of the cone returns. Due to the large gap between the lower part of the cone and the seal barrel, the pressure oil may come from here. Throw it out. 1. Sealing tube 2. Oil retaining ring 3. Spindle 4. Eccentric sleeve 5. Oil retaining ring gland According to the calculation, when the supply pressure is higher than a08MPa and the spindle is increased by 205mm, the pressure oil rises along the gap between the spindle and the spindle bush. Through the diffusion of the upper taper of the inner hole of the spindle bushing, part of the pressure oil can be injected beyond the lower end of the cone to the upper part of the seal to form an oil sling. When the position of the main shaft is lower, the lower end face of the cone is closer to the end face of the spindle bushing, and the oil blocking effect is better. On the contrary, the oil blocking effect is poor. This is consistent with the previously mentioned on-site phenomenon. 2 Transformation According to the above reasons, we modified the equipment. 2 An oil retaining ring is added along the main shaft, and the oil retaining ring gland is fixed on the sealed barrel to restrict the oil retaining ring from being in a fixed position at all times without moving up and down with the main shaft. In this way, no matter how far the spindle is lifted, the oil baffle can block the pressure oil well and it will not be sprayed outside the sealing cylinder. After many years of use, it proved that the transformation was very effective. It completely solved the problem of throwing oil, and saved nearly 80,000 yuan per year for our mine. At the same time, it also eliminates the adverse impact on the flotation and cyanide production indicators caused by oil rejection. Mouth excavator generator excitation current protection device Hou Xitian Dong Jianxin Baiyun Obo iron ore Inner Mongolia Baotou, 14080 excavator, 0 electronic control system The generator voltage is established using thyristor single-phase 1 half-controlled bridge excitation current. The thyristor trigger is composed of magnetic amplifiers. It is convenient for integrated control signals, uses double closed-loop voltage negative feedback, and current negative feedback. Guaranteed, 0 electronic control system to start the entire process to speed up, speed performance, production efficiency greatly improved. The question and analysis of the 1 plant 0 electronic control system sometimes encountered unexpected generator over-voltage in the production process. , Electronic control system out of control, causing mechanical impact of the motor coaster, motor winding breakdown and firing phenomena, combined with fault phenomena and generator debugging experience analysis, determine the source of the fault is the magnetic amplifier control winding voltage negative feedback circuit caused by the circuit, according to FD electronic system debugging by example coefficient analysis, the magnetic amplifier has three control windings of the integrated signal W1 type, f is for the system Anzu IWt for the given control ampere-turn for the voltage negative feedback control An sister TrT for the current negative feedback control In the debugging of the no-load voltage of the generator, Anxie basically gives the control ampoule, that is, = 1, the generator gets the rated excitation current and sends out the rated voltage. In order to make hair, the voltage is quickly established, the electronically controlled start-up process is quickened, and the artificially controlled ampoules are increased artificially, that is, 1=3 times the basic given control ampoule. This multiple is called forced system 1. Pedal 2. Shake Improvement of the control circuit for the arm-pumped pump and electric power control system Wu Chun Liu Gaofeng Dagang Jianshan Company Concentrator Plant Shanxi Iron and Steel Co., Ltd. of Yifanshan Gongsan In pilot production, due to lack of output, grinding slurry was selected, gasping, production arts were unstable. Stable production of D. Art and energy saving, in 997 will choose the main plant 20 slurry pump motor plus frequency control device 566,5, was used for quick investment, only the original motor control circuit for simple changes. During the subsequent use, it was found that the inverter could only be installed in the low-voltage power distribution room of the main plant due to the harsh environment, but there was no remote operation. If the postman wanted to meet the process requirements by adjusting the motor frequency, he must find the electricity. There are 20 slurry pump in the selection system, and there are also 20 corresponding frequency converters. Each class must adjust the operating frequency of the motor at least. This will increase the workload for electricians and job workers; Slurry pump operating conditions, because there is no corresponding indicator in the field operation box, so the post personnel can only rely on experience to observe the speed of the motor speed, determine the operating frequency of the slurry pump to assess even if the current is not the value and the actual Motor running current is not. With the pliers we analyzed the original circuit and found a current relay 380 with 40 currents in the thyristor single-phase semi-controlled bridge excitation power circuit of the generator. In order to prevent the misoperation of the current relay, the rated current of the adjusting relay attraction coil is 1.3 times of the generator excitation current value, and the auxiliary normally closed interlocks with the thyristor semi-controlled bridge control power circuit. When the voltage negative feedback control circuit suddenly opens, the excitation current of the generator suddenly increases, the current relay operates, the auxiliary normally closed contact is disconnected, the thyristor control power supply is cut off, and the generator excitation overcurrent and the generator overvoltage are suddenly interrupted. Played a fundamental protection. By adopting the above measures, the reliability of the FD electronic control system is ensured, and various accidents and expansions caused by the electronic control runaway are avoided, and good results are produced in the production operation. 1 A simple milliampere generator is installed on the motor field operation box. The controller can send 420, DC current signal to adjust the output frequency of the inverter. The frequency converter controls the standard current type and the standard voltage type. We determine to use the current control through the function selection. So after installing the milliampere generator, it is possible to adjust the output of the milliampere by adjusting the size of the potentiometer to adjust the output frequency of the inverter. The working principle of the milliampere generator 2; 2 class field operating box increases the frequency refers to the introduction of the inverter can be introduced through the 20k, resistance and milliamps head combination to achieve significant frequency to many troubles. After our field measurement, the output terminal 2122 of the inverter outputs a DC voltage signal 010, which is proportional to the frequency. Therefore, according to the actual operation of the slurry pump, the combination of 0 and 5 DC voltage heads instead of the resistor and the milliamp head was re-selected. The effect is very good; the installation position of the inductor is compared with 1 and 2 and it can be seen that the current transformer is installed. The position is changed from the inverter power supply to the output line of the inverter. Because the inverter power supply is measured at the incoming line. Frequency 50 output current signal, the inverter output is a non-frequency current signal, the waveform 3. Compared with two current signal waveforms, the pulsation component of the current signal output by the inverter is large, and the measured current value is relatively higher and closer to the actual operating current. Through the above improvement of the control circuit of the slurry pump motor, the current slurry pump job can not only observe the operation status of the slurry pump motor intuitively and accurately at the site, but also can adjust the operation frequency of the motor according to the process requirements at any time. Convenient for job operators. Practice has proved that this kind of transformation is economical and effective, creating conditions for the company to put into production. Port description, reset button for fault. 2 frequency controller. Such as grasping and other equipment are in the scene operation box. Dawn, Shan Machinery 2000, number. At this time, the generator excitation current is much higher than the original rating, and the generator voltage quickly rises much higher than the rated value. This phenomenon is not allowed. We have added a voltage negative feedback control ampere that does not have negative current feedback when two basic control amps are empty. The total synthetic ampere turns the generator excitation current generator voltage to the rated value and will not increase further. The 75kW motor's operating current is 2A and the current value is 75. The rated current of the motor is 9.2 The rated current of the motor is 1 Retrofit measures Based on the above existing problems, we are seriously studying the multifunctional wiring of the inverter. Here you can find the related products in Ultrasonic Water Meter, we are professional manufacturer of Ultrasonic Water meter,Ultrasonic Water Flow Meter,Portable Water Flow Meter,Octave Ultrasonic Water Meter. 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