Faced with some difficulties in excavation operations and high working address, the general excavator is no longer competent. At this time, the long arm excavator will be used. In order to reduce the cost, many bad leasing companies have privately converted the general excavator into the long arm excavator, which can not be seen in appearance, but it really works. When it comes to industry, it is very simple to present the situation of digging hard. The following two points are analyzed for us by the Long Arm Excavator Rental Company about how to operate the excavator when the excavation force is not available.
There are two kinds of inability to excavate: the first one is that the tensioner does not hold up the car and feels the load is very light; the second one is that when the arm or bucket pole is extended eventually, it advocates that the machine should hold up severely or even stall.
The first situation is to dig up weakness, and to advocate the machine to suppress traffic。 Comparing with the advocated non-locomotive traffic, the advocated locomotive traffic indicates that the absorption torque of the pump is greater than the output torque of the advocated engine, and then makes the advocated aircraft overload。 This kind of defect should first check whether the machine speed sensing system is normal or not。 After detailed inspection, the problem is eliminated。 In this way, the machine speed sensing system will recover its normal function and the phenomenon of traffic jam will disappear。
In the second case, we can not afford to hold back our cars. The magnitude of excavation force depends on the output pressure of the main pump. Whether the engine is holding up or not is decided by the connection between the torque absorbed by the oil pump and the output torque of the engine. It is argued that the machine does not hold down the vehicle, which means that the oil pump has a smaller absorption torque and a lighter load. Assuming that there is no obvious abnormal operation speed of the excavator at this time, the maximum output pressure of the main pump, i.e. overflow pressure of the system, should be checked. Assuming that the overflow pressure value is lower than the specified value, it indicates that the setting value of the overload overflow valve for the arrangement of hydraulic circuit is incorrect. At this time, it is necessary to roll the adjustment screw to adjust the machine.
1. What kind of excavator can be refitted to add long arm excavator?
The new machine does not advocate refitting, because the load of the excavator will increase in the future, and it is easy to have disputes with the original factory after the warranty period; the machine under 50% of the new machine does not advocate refitting, because the service life of the machine is relatively old, the functions of all aspects are reduced, and the lengthened arm itself has a certain weight. It is difficult to give full play to the efficiency of the extended arm excavator. The best is that 5-80% of the new excavator is refitted into the extended arm excavator.
Two. Explore the application scope of machine plus long arm.
Long arm excavator has two section excavator lengthening arms and three section excavator lengthening arms。 Two section excavator lengthening arms are mainly suitable for earthwork and deep cutting excavation, River silt removal, and three section excavator lengthening arms are mainly suitable for high-rise building dismantling and other projects。 According to leverage principle and mechanics principle, the force of the lengthened arm excavator is less than that of the original excavator, and the construction should be avoided as far as possible。
Three, three segment excavator and long arm how to demolish buildings?
The most important thing is to look at the bump of tall buildings。 For example, 5 high-rise buildings should be demolished。
1. Mud or industrial waste must be brought to the bottom so that the excavator can reach the roof with a vertical hammer.
2. after the excavator is opened, the filler will be stabilized first, and there will be enough room for steering.
3. Use the hammer to strike the wall in the direction of the straight wall (about 1 meter from the top), turn the wall over a hole, push the debris in, don't let it fall and hit itself.
4. expand the hole before moving the beams and columns. When the brick wall is turned over, the pillars are struck, so that the beams on it can not support it and fall into it, so as to ensure their own safety. In this order, from top to bottom, push forward.
Four. How to choose excavators and long arm manufacturers
Because the price of the original excavator's elongated arm is too high to be accepted by many bosses, the elongated arm of the excavator produced by the deputy factory has become the first choice of most excavator owners. At present, the domestic manufacturers of the elongated arm of excavator are mixed with each other. Some small factories do not even have engineers. For a few welders, the materials chosen are also cheap. The quality of the unqualified steel can be imagined after sale.
The above information is organized and published by the long arm excavator. I hope the above information can help you. If you want to know more, please click on our website. Our website is http://www.txkql.com. Thank you for your support.