Concrete pump at work, if used improperly, it is easy to cause some parts of the pump premature damage, not only increased equipment maintenance costs, but also seriously affect the production. How to improve the service life of concrete pump wearing parts is worth discussing. 1. Cutting ring and glasses plate Cutting ring and glasses plate is a pair of close, with the relative movement of the components, both the contact surface are welded with a layer of wear-resistant materials, through the S-shaped spline shaft end of the special nut, Adjust the gap between the two (0.1 ~ 0.2) mm. A rubber spring fitted between the S-tube and the cutting ring allows relative flexibility between the cutting ring and the eyeglass plate. As the service life is extended, the rubber spring loses its elasticity and the joint surface between the cutting ring and the lens plate will wear out, resulting in an increase in the gap between the two. When the gap> 0.7mm, the need to immediately adjust, or pump the mortar will be "gap" into. Once the mortar into the friction surface, the cutting ring and the wear rate of the lens plate will be greatly accelerated. Pumping concrete, the cutting ring with the S-shaped tube swing and swing, plays the role of cutting concrete, cutting ring wear faster, the higher the pressure at the exit of the concrete, cutting ring wear more serious. Typically, the wear of the cutting ring first occurs at the edge and at two symmetrical positions at an upper angle of 90 °. Therefore, when the cutting ring wear the above parts, the cutting ring can be rotated in an angle after the continued use, which is equivalent to the cutting ring life doubled. Wear glasses first occurred in the middle of the bridge of the nose, the greater the gap between the lens plate and the cutting ring, the wear faster. Therefore, we must always pay attention to the gap between the lens plate and the cutting ring, once found to increase the gap, you need to immediately tighten the nut or replace wear parts to prevent mortar into the friction surface. When the rubber spring loses its elasticity, it needs to be changed immediately. For the repair of the cutting ring and the lens board, D507 welding rod can be used after welding. Pistons and Conveyor Pistons are generally made of polyurethane materials, more flexible wear, the inner wall of the transport cylinder is also coated with wear-resistant materials. There are two types of lubrication between the piston and the transfer cylinder: one is automatic lubrication, each pump once, the fuel system automatically adds a lubricant; the other is a manual fuel system, artificial regular refueling. For automatic refueling system, the need to regularly check the oil flow is smooth, otherwise once the oil blocked, the piston and the transport cylinder will be abrupt wear; For manual refueling system, the operator should be based on the different working environment, regular replenishment of lubricants, usually 1 Times / h. Remember: When filling, be sure to point the piston to the bottom of the vertical refueling point, so that the oil just into the middle of the piston tank. Pumping process, the operator often have to "hold the cylinder" operation, that is, in the main cylinder piston to the end, the operation of the jog button for 5 ~ 8s, to supplement the main cylinder closed oil chamber hydraulic oil (for relying on Proximity switch to the pump, but also the proximity switch as close to the main cylinder side), in order to make full use of the delivery cylinder stroke to avoid local wear cylinder. Operators should also pay close attention to the water tank, once found that the water has turbidity or sand in the water, indicating that the piston may wear and need to replace the piston in time, otherwise it will aggravate the wear of piston and conveying cylinder. If the replacement of the new piston, the water quickly turbid change, it shows that the transport cylinder has worn, the need to replace the transport cylinder. If there is a condition, the cylinder diameter can be measured to determine whether the cylinder is worn or not. Generally, the chrome layer thickness on the inner wall of the cylinder is only (0.2 ~ 0.25) mm. When the cylinder diameter is increased (0.45 ~ 0.55) mm, Cylinder. In addition, the water temperature in the water tank is also very important, the water temperature is too high, will also aggravate the wear of the piston, often need to change the cooling water in the tank. 3. Pipeline take over, be sure to pick up from the pump outlet, that is, from the front to the back, must not connect the first two, then the middle. Improper connection can result in "internal forces" in the pipes, which can easily cause the pipes to break from the joints. After the pipe is connected, the outlet of the pump machine, the bend pipe and the vacant pipe should be fixed firmly to prevent the pipeline from moving and damaging the pipe. Since the closer the pump, the higher the pressure of the concrete in the pipe, so in the outlet of the pump to use the new wall thickness of the pipe, the thin wall of the old pipe used in the pump far away, which can improve the use of the pipeline Lifespan, while reducing the possibility of squibs. For the elbow, wear the most serious is away from the pump side, it is often appropriate to turn around the elbow to extend its service life. 4. Discharge port, tapered pipe, distribution valve For the discharge port, tapered pipe, distribution valve and other wearing parts, wear layer is found once worn away, and timely welding with D507 electrode can still be used for some time. Due to the different working conditions of different sites, such as the level of concrete, the distance and height of pumping, etc., the service life of wearing parts such as cutting ring and eyeplates differ greatly at different sites. However, as long as the pump is properly used and handled, Machine wearing parts life can be greatly extended.