1, hydraulic safety lock switch

You can see it when you open the door of the excavator. As the name implies, the "safety lock" is designed with the driver's safety in mind. Because the action of the excavator is driven by hydraulic pressure, the safety lock can control the transmission of hydraulic pressure in time. When the excavator is started, the driver sits in the seat and turns the hydraulic safety lock to the unlocked state. At this time, the operating handle or walking pedal excavator will act accordingly.

When the excavator is not working or the driver wants to get off, the hydraulic safety lock should also be turned to the locked state to avoid safety accidents caused by touching the handle and walking pedal by mistake.

Of course, different brands of excavators have different hydraulic safety locks, but as long as we know, we can skillfully control them to some extent.

2. Main switch of power supply

Before starting the excavator, be sure to check whether the main power switch of the excavator is turned on. When the excavator is not working for a long time, it is necessary to turn off the main power supply to prevent the battery from leaking. On the excavator, even if the key of the excavator is pulled out, the emergency light and radio on the roof are still powered on, and they can all be turned off by turning off the main power switch.

3. Engine start switch

The engine start switch is actually the position where the key is inserted to start the excavator. There are some signs on it. Let's find out.

(1) start, which can be understood as start and start.

(2) On, which can be understood as on and off. When the key is turned here, the whole circuit of the excavator is connected.

(3) Guan, which can be understood as Guan and Guan. The key rotates here, the whole circuit of the excavator is disconnected, and the key can be inserted and pulled out.

(4) Hot, you can understand the meaning of warm-up. When the temperature is low, turn the key here to keep warm.

When the driver enters the cab, insert the key from the keyhole and turn it to the ON position. At this point, the power supply is turned on. After the dashboard lights up, turn it to the start position and start the engine. When the air temperature is cold, it may be difficult to start because of the increase of oil viscosity and the decrease of battery performance. Therefore, please try to start the engine successfully at one time and make the idle engine warm.

I believe everyone can see the process of starting and shutting down at a glance. What I want to say here is the importance of preheating, which is exactly the process that most drivers will ignore. Under normal circumstances, the engine should be warmed up after starting, especially when the weather is cold and the water temperature is relatively low. Warm-up is to start the machine first, wait for the temperature of the machine and the "running-in" between components, and then let the machine enter the working state.

Warm-up is a necessary way to protect the machine, otherwise it is likely to lead to cylinder bursting or excessive piston wear, just like "warm-up exercise" before strenuous exercise. The preheating process takes about 5 minutes, and you can also use this time to butter all parts of the excavator. Of course, most excavators can now display the preheating process on the dashboard, and there are indicator lights to remind them, so let's take a look at the signs on the dashboard.

4. Dashboard

Take an excavator as a notebook as an example. If the engine is the "main board" of the excavator, then the dashboard is the "display" of the excavator, which can feed back the status information of the excavator at any time, such as fuel quantity, cooling water temperature, engine oil temperature, engine speed, working mode, time, equipment maintenance information, fault inquiry and so on.

Of course, the dashboard and display content of each brand model are different, including LCD screen and digital display screen.

With the continuous progress of science and technology, the display screen has more and more functions. I have contacted a He Shan Smart 230E before, and its display screen has "loading timing mode", which feels very suitable for loading operation.

When it comes to dashboard, you have to mention camera equipment. Like excavators in Europe and America, the rear camera has become standard. Through the understanding and operation of the dashboard, we can have a systematic understanding of the overall state of the excavator. In addition, there are many icons on the dashboard. Here, I will learn about these signs on the instrument of He Shan Intelligent 230E.

Excavators can choose different working modes in operation: S standard mode: H heavy digging mode; L renovation mode; F minor repair mode. Like other excavators, it has strong P/H working mode and standard M/S mode. E economic model and so on.

5, operating handle

The operating handle is believed to be the most familiar, with two handles, left and right. There are two operating modes in China: the left operating handle is divided into forehand and backhand due to the different settings. The right hand refers to the left-right rotation direction and the backhand refers to the up-and-down rotation direction.

Most excavators also have nameplates on the glass to tell you simple operation methods, but they are not enough for homework.

The operation of the excavator handle is different from the operation of the car, and the handle is in the central position in the natural state. For example, when rotating, the inertia of the excavator needs to be considered. When you shake the handle, the excavator will start to rotate, and then release the handle. After the handle is naturally centered, the inertia excavator will continue to rotate, so the distance of shaking the handle should be considered when operating.

In addition, the telescopic movement of the big and small arms and the bucket uses these two handles, and the movement speed and intensity will change with the different swing positions. Because of the different models and brands of excavators, some excavators have function buttons attached to their handles, which can instantly increase power, such as increasing the strength of the big and small arms when lifting and increasing the speed of the big arm when loading.