The secondary spring system of the original electric locomotive consists of 4 sets of common cylindrical compression springs. The parameters are: spring material diameter d=48mm, maximum working ring diameter D=230mm, effective working circle number n=6.6, free height H0=528mm The working heig
The unit adopts upper and lower two-layer structure. The upper layer is the control circuit; the lower layer is the motor driven main circuit. 1 is the principle of the motor drive main loop circuit. When the control circuit is normal, the contactor MCC and the relay RLY are connected, the main circ
 The speed of pumping the oil tanker is getting slower and slower. Is the pump broken? What is the reason? Everyone knows that any oil or oil transported by oil tankers is not an exception during transportation or production. When the tanker is used fo
Chassis configuration: Dongfeng Group original Dolika series chassis restructuring, Dongfeng new flat head forward turning cab. The vehicle is equipped with: Dongfeng Chaochao Chai Guosan 120 hp ( EGR ) 4- cylinder engine, engine model CY4102-E3C , Dongfeng
First, the fuel tanker truck brake system 1, control system (pedal, handbrake, etc.); 2. Hydraulic system (hydraulic oil, brake master cylinder, hydraulic oil pipe, brake cylinder); 3, electronic control system (ABS pump, ABS sensor, ABS computer); 4. As
The turret of the CNC lathe cutting motion CNC lathe is equivalent to the combination of the large carriage and the middle carriage of the ordinary lathe, and the turning tool is installed on the turret. When turning the outer circle, the turret is to be moved in two directions: the turret axial
Tank truck heavy truck users to buy a car to engage in transportation is to profit, and in the context of national toll-by-weight promotion, it is obviously impossible to rely on overloaded and overloaded transport to profit. So how can we further reduce op
At gas stations, oil tanker sometimes encounter slow or no oil out of the situation, there are many reasons for this situation, some of them caused by damage to the solenoid valve. Usually maintenance, in order to save trouble, put the solenoid valve inside the diaphragm removed or re-install, the s
Tank truck heavy truck users to buy a car to engage in transportation is to profit, but in the context of national toll-by-weight promotion, it is obviously impossible to rely on overloaded and overloaded transportation to profit. So how can we further redu
From the refinery to the user, the oil has to go through multiple links, and the evaporation loss during loading and unloading is quite large. According to the actual value of oil and gas recovery in the United States, it is estimated that each loading and unloading has a volatile loss of 0.18%, an
On April 26th, 2013, the "National Auto Parts Fair and the National Auto Parts Sourcing Fair" held in Beijing ended perfectly. The scale of the exhibition was unprecedented, with more than 2,200 exhibitors participating in the event. As the most powerful lubrication manufacturer in
Affected by factors such as the industry cycle and industrial slowdown, the overall performance of China's commercial vehicle companies in 2012 was poor. The industry experienced negative growth for two consecutive years after reaching the highest point in 2010 and entered a low period. Howeve