ghd planchas U- tub safety device to improve _

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U-tub safety device to improve


Failures and incidents, which was once up to 3 times / day, which seriously affected the mine's safety. Figure 2 After transformation, the spring-loaded bolt connection device l a handle; 2-fixation; 3-spring; 4-pin 3 tub safety device designed to improve the original design u-tub safety device, by the insurance ring insurance piece, connecting ring,ghd planchas, bolt shown in Figure 1. The principle relies on the insurance ring insurance chip card slot, to prevent insurance piece bolt can not rotate to achieve the purpose of displacement. Sui conditions from the actual operation point of view, the device of the following shortcomings: (1) tub or waste rock in the coal loading process, the safety device easily falls outside the car smashed coal or waste rock deformation,tory burch outlet, once the insurance ring or connected Hebei coal 2007 (2) On the centrifugal pump of the common faults and maintenance Lv Zhonghua, Li Jun Pu (Hebei Jinniu Energy Co., Ltd. Xiandewang mine power plant, Hebei Xingtai O541o7) Abstract: The list of centrifugal pumps of the three types of maintenance and introduced in the daily operation of the pump often several failures and excluded methods. Keywords: water pump; maintenance; troubleshooting CLC: TH311 Document code: B Article ID :1007-1083 (2007) 02-0044-02Discussiononthemaintenanceofthecentrifugalpumpan ditsoverhaulLUZhong-hua, LIJun-pu pump is a more common fluid mechanical, It is in the sectors of national economies is widely used. Such as the underground mine drainage pump, power plant boiler feed pumps, condensate pumps, circulating pumps. According to different operation mode and the role of pumps can be divided into many types, including centrifugal pumps of the most widely used. With the rapid development of safe and reliable operation of the pump higher and higher requirements. To ensure security and stability of the pump, pump maintenance is very important. According to the actual use of pumps, pump maintenance can be divided into three types. An accident, mechanical maintenance work this method allows to maintain a clear failure, the measures taken is to remove the damaged equipment or components to repair or update. This maintenance cost is high and a waste of time, delay the normal Xiao e ! Dome dome dome send dang . Qiong Qiong Qiong send! Ring deformation, not the insurance card into the slot on the ring. (2) the use of forward-style turn coal unloading, the safety device is easy and collision damage to the dumper. (3) tub during operation, due to bumps, vibrations,tory burch outlet, especially in off road situations, the insurance part is easy to slide out from the slot. (4) of the insurance ring insurance piece is welded to the trunk, while the bolt is on the frame, once the trunk deformation, the insurance unit is completely inoperative. (5) maintenance of a large quantity. (6) operation is not convenient, time-consuming and laborious. Sports car for the status quo and the previous occurrence of the accident, it was decided to transform the safety devices on the carts. Demonstrated by repeated tests,love bracelet cartier, using spring-loaded bolt to finalize the connection device shown in Figure 2. The device will be installed in the semi-cylindrical spring holder enclosed within the bracket welded on the frame to form a whole, even if the trunk does not affect the safety device deformation performance. Pressure by spring tension bolt, to ensure that in any case do not overcome the spring pressure bolt itself prolapse. Abstract hook, can be welded to bolt on the handle to achieve. Spring parameters: Material ordinary carbon spring steel wire. Wire diameter of 3mm, the spring in diameter 35mm, work laps 18 laps, free height 2 (Xhma, maximum working load 170N, allowing scalable frequency 1a5 times improved tub safety device has the following advantages: ① simple structure, easy processing production; ② easy to operate, can effectively reduce the pick hook time and the operator can avoid careless, when the pin inserted in the hook is not in place of the phenomenon; ③ reliable; ④ little maintenance. due to the use of semi-closed mode to prevent fixation internal dust accumulation, debris and ice in winter caused the delay phenomenon stretching the spring, according to the previous year's statistics did not improve by the mine car safety device failure caused by accidents, transport accidents accounted for 55.6% of the direct impact the normal production Shangyi ore and economic efficiency. After the transformation, after years of running, so far, has not yet occurred by the safety device failure caused by transport accidents not only to ensure the safe operation of equipment, but also for safety laid a good foundation, but also promotes the production, received a very good economic results. Author: Yuan Bin (1965), male, Hebei Zhangbei people, Zhangjiakou Shangyi coal technology management in mechanical and electrical, assistant engineer. (Received Date: 2O06-11-14; Editor: Liu elaborated words)
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