Safe use of on pump and daily maintenance
(a) concrete pump in the running of safety precautions
(1) the driver who drives the pump must hold the relevant qualification certificate issued by the relevant department, and shall abide by the road traffic safety regulations. When the vehicle is running, weight, length and width and height shall not exceed the provisions of the road traffic law index, across the channel, bridge, tunnel or underground pipeline in high altitude, high altitude cable, must ensure that there is enough space and distance. As a pump operator, we should also master the structural characteristics of the equipment to understand the vertical height, weight, length, width and height of the boom of the pump truck, and pay attention to the use of the pump boom.
(2) and the center of gravity of the concrete pump truck is relatively high, turn to slow down to prevent tipping. Do not exceed the maximum speed of the vehicle speed data pump in 85km/h Technology
(two) precautions for application safety of pump truck
1, pump operating personnel must undergo professional training, and obtain the safety, quality supervision departments of the license, and must be certified.
2, operators must wear a safety helmet, the correct use of labor protection supplies, and comply with all kinds of safety regulations.
3, pump truck can only be used for concrete pumping, prohibit the use of any other than this (such as lifting heavy objects).
4, no demolition equipment on protection device.
5, no change in shape and pump system. It includes changing safety pressure, running speed setting, switching to large diameter pipe or increasing pipe wall thickness, changing control program or line, replacing the boom and outrigger of pump truck, etc..
6, before the start, driving, cars are necessary for routine inspection of vehicles, to conduct a comprehensive inspection in accordance with the "maintenance manual" on a regular basis of pump mechanical, electrical and hydraulic systems, and to check the records of endangering the safety of the risks must be excluded in a timely manner.
(three) safety precautions for supporting legs
1, so the legs should be expanded in place, and to determine the leg supporting reliable, otherwise is in danger of tipping. Do not rub the legs before the station in pushing the telescopic range, so as to avoid injury.
2, the supporting leg must confirm the bearing capacity of the foundation, such as the maximum pressure of the leg and the ground allowable pressure, the supporting leg at the bottom of the supporting plate or auxiliary square wood. Auxiliary side batten is not less than three, the total width is generally not less than 0.6m, length is not generally not less than 1.2m.
3, leg supporting the ground must be level, can not be supported in the hole and pit, slope, leg bottom edge on the ground to keep a safe distance according to the ground, dense, pit distance is generally not less than 2 meters, but not less than the pit depth.
4, support legs, the body must be horizontal, tilt in any direction shall not exceed 3 degrees.
5, the factors of the stability of lower arm folded immediately after the exclusion, in accordance with the requirements to support.
6, night construction is necessary to open the legs to prevent other vehicle collision warning lights.
1. Check items before departure
The arm and leg, valve should be fully recovered and lock; working lamp, signal device is normal; there is oil, grease and adequate washing water; hydraulic oil enough parts without leakage; piping, tools, appliances and accessories should be complete.
2 inspection cycle of main components
Daily check the appearance of deformation damage, exposed parts loose change, operation and performance of oil leakage, hose damage, lack of lubrication grease, driving safety factor; monthly (or 2000 m3 concrete pump) check valve damage, pipe wear, reduce the hydraulic oil, lubricating point lubrication, automobile part of routine maintenance for half a year; (or concrete pump 12000 m3) cylinder shell, check valve damage transmission, electrical components, hydraulic oil deterioration, arm injury, automobile part of routine maintenance.
3, a brief introduction of four pipe repair points as follows:
The pipe throw deflated first do a simple fixture vise can also be used to replace, and then prepare a pipeline diameter and the diameter close to (slightly smaller than) the steel pipe, steel pipe one end of the handle into the bullet shaped, so just to throw deflated at heating, with a round steel can be corrected.
Second, the local wear only generally repair the elbow, because under normal circumstances, the straight pipe of a part of wear through, the rest of the parts are close to the wear limit, no repair value, and the elbow generally grind the bend. The repair method is to cut a medium sized piece of material on the waste pipe, and grind the damaged parts and pieces with a sand grinder, and choose the welding electrode suitable for the pipe. Attention should be paid to the curvature of the repair site.
The coupling loss can be cut waste pipe with pipe coupling part carried by pipeline pipe coupling length should be 45 ~ 55 mm, with a grinding wheel machine welding section, select the appropriate welding rod can.
(4) the straight (bend) pipe with abrasion limit hole will not be repaired any more if the slurry leaks in the hole; if it is to be repaired and used, the tail of the outer pipe with small pressure can be used. In fact, the general repair of the pipe is best used in the outer end of the pipe, prohibited in the arm.
