How can I take a bus from Yongchuan passenger transport center t
Bus route: Yongchuan 205, about 1.2km
1. Walk about 20m from Yongchuan passenger transport center to Tieqiao station
2. Take Yongchuan 205, pass through 2 stations, and reach xiaoqiaozi station
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bus route: Yongchuan 108, about 1.4km
1. Walk about 40m from Yongchuan passenger transport center to passenger transport center station
2. Take Yongchuan 108, After 4 stops, get to South Street Office Station
3, walk about 130 meters to South Street
with the pass, you can follow the tour group to Hong Kong at the prescribed time. Travel society tells you the specific gathering place and method.
Trenching can be said to be one of the basic operations of excavator drivers. It seems simple, but in fact it has high technical content. Many novices in the process of digging ditch, often appear to dig straight, dig deviation, ditch bottom wide and narrow problems. So what are the operation skills of trenching? Take a look at the basic trenching operation shared by the old drivers
1. Trenching must be straight
the most basic principle of trenching is to follow the principle of digging straight. Generally, the line of lime ditch is drawn on the construction site. The center line of the excavator chassis is aligned with the lime line, and the bucket teeth in the middle of the bucket correspond to the lime line, so that it is not easy to dig away
if there is no lime line, you can use the track to press out a connecting line first, and the track traces left can play the role of lime line. The movement of the bucket can be adjusted according to the track marks left by the backward movement
2. The surface layer should be taken first when trenching.
when formal excavation is carried out, the surface layer should be taken first, and then the lower layer should be taken; When a ditch larger than the width of the bucket is g, the two sides should be g first, and then the middle should be g
3. Maintain the flatness of the slope
many novices are not good at digging ditches, mainly because they do not have the principle of tidiness, and the detailed operation needs to be further improved. From the beginning of V-shaped ditch to the end, the slope should keep the same gradient. Of course, the soil quality and ditch depth are different, and the slope also needs to be adjusted accordingly
The two straight lines on the map are the premise of keeping the slope flat. The excavator driver must pay attention to the loose soil beside the ditch to prevent the soil from falling, and clean it with the bucket in time4. The control of the bottom of the ditch is very important, and the skills of throwing and leveling are needed at this time. If the trenching is for the installation of water pipe drainage, it needs to have a certain slope at the bottom; If it is the foundation pit of the house, the bottom should be horizontal
in fact, many excavator drivers can't see the height of the bottom of the ditch. When there are surveyors, they can ask the construction workers to measure with instruments while digging. If you don't have it, you can find some references. You should get out of the car and observe more
5. Three methods of trenching
the basic operation skills of trenching have been briefly introced above. Finally, three methods of trenching are introced to you:
(1) riding type: mainly in the open area, the excavator is parked in the middle of the trench to be excavated, and the bucket is g between two tracks
(2) along side type: refers to the narrow area of the site, such as clear water canal, the bucket only along one side of the track line to dig (here we need to use the slope technique)
(3) facing type: it is mainly aimed at the excavation of highway culvert ditch, which means that the excavator is parked at 90 degrees to the ditch edge (it should be noted that when the ditch is deep, the bucket cylinder may touch the ditch edge)
in short, the excavator driver needs to pay special attention to the straightening, the flatness of the slope, the control of the ditch bottom, etc. in the process of digging the ditch, and select the appropriate trenching method, In fact, ditching is not difficult
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the excavator driver should pay attention to that if the ground is thin, it can be broken by pressing down with the bucket directly. If it is thick and pressing continuously, it can be lifted up from the side of the edge with the shovel teeth
some friends reported that the excavator bucket in the process of digging hard soil or concrete ground caused the cab to tilt forward and backward slightly and vibrate. If there is such a phenomenon, we should pay attention to it. When using the digging bucket, we suggest that we should not dig directly when digging the cement pavement. We should dig a hole first, and then dig from the bottom up. If you want to pay more attention to the bucket information, you can go to the official website of star engineering machinery http://www.xzhxwd.com/
1. Find the reference object
before digging the trench, the construction personnel often have already laid the lime line, and the driver can clearly know the length and width of the trench and the scope of the whole working condition. The lime line sprinkled here is equivalent to a reference object. When digging the straight hook, it is enough to dig according to the route of the lime line, and the front-end working device should use the same stroke as far as possible, That is to say, when excavating each section of trench, the excavation action of big and small arms and bucket should be consistent as far as possible, which can greatly improve the operation efficiency and construction effect to a certain extent. For each excavation distance, it is better to stop the excavator to check whether the groove deviates from the required direction, so as to facilitate timely adjustment and save rework. However, in the actual construction process, the lime line is likely to be covered by soil, so it can not play a role. Speaking of this, then the problem comes, how can we dig the ditch straight without lime line
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2. How to dig the ditch straight without lime line
as the saying goes: there is no problem that can not be solved, but the solution has not been found! As mentioned above, the lime line is a reference. Since the lime line can not be seen clearly, we will find other objects as the reference. It can be a curb on the side of the road or the foundation of the building. However, when there is no suitable reference around, experienced drivers will use the crawler board of the excavator as the reference. I also agree with this practice and try again and again. Adjust the excavator to the approximate straight position, take the edge of the track shoe as the reference, get off the car after digging a section, and visually check whether the groove is straight. If it is not straight, adjust the excavator to the appropriate position again. At this time, the walking direction of the excavator should not have deviation as far as possible, keep certain action, and try to reach the position in one step
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3. How to "bend" the ditch without lime line
I believe many of my friends are puzzled that if I dig a trench straightly, it will be curved. However, the "bend" I am talking about here is not crooked, but a curve with a certain radian. It needs to use the bucket teeth or side teeth to cooperate with the corresponding action to "carve" constantly
I am also a "soldier on paper" here, and my friends can try more when they have the opportunity
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how to level the ditch bottom<
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1. Under the command of the construction personnel, using the measuring tools can control the depth and slope of the ditch more accurately, which is more e to the tacit cooperation between the driver and the construction personnel
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2. Bring your own tools
some time ago, an enthusiastic friend brought us his invention. His name is Hanhai, and he applied for a patent for it. Friends who often visit Tiejia should be familiar with this name. This is undoubtedly a great benefit of "technology control". You can read this article carefully in your spare time, Find out what he thinks
it's also a way to control the depth of the trench when digging. It's a tool that can be used alone. It seems a little complicated, but it doesn't matter. I'll take a tape measure with me, and the driver can check it at any time next time. It may not be a tape measure, or it may be just a branch of the right length picked up by the roadside<
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the bottom of the trench can be leveled by the bucket after the trench is g here. This is also the requirement of most construction workers for trenching, especially for the trench where the pipeline needs to be installed. After the trench bottom is leveled, the next work can be carried out
experienced drivers will also use this action to further trim the ditch bottom until the required slope is reached
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how to improve the efficiency of trenching operation
it is not difficult to see that the methods mentioned above can improve the working efficiency of excavators to a certain extent, but in practical work, we must remember the truth that "if we want to speed, we can't achieve it". Here I will give some examples< In my opinion, no matter what kind of operation situation, the excavator should "stop the body" as much as possible, one is to consider safety, the other is to rece the operation difficulty of the driver
2. Confirm the gradient and depth, dig well and then walk
here, I recall my previous working experience of driving an excavator. Once, when digging a ditch, the construction worker left the site after giving instructions. According to the instructions of the constructors, they g tens of meters at a time. Later, the constructors said that the whole excavation was shallow and they had to dig it again. I believe most drivers don't like to do the rework work. Take the slope of 1 meter and 1 centimeter as an example, and the trench of tens of meters is tens of centimeters short
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3. Clear the earthwork on both sides of the trench to avoid landslides
especially when there is water in the trench or the weather is about to rain, it is best to foresee such landslides in advance
take the excavated trench as your own "property" to protect it, and dig away the virtual soil above the trench as far as possible, with the trench as wide as possible and in a "V" shape
another advantage is that if there is a landslide at present, the excavator can also have this condition to move forward to excavate the collapsed materials.
when excavating at an angle above 90 degrees, the boom should be retracted while the jib is retracted, and the bucket should be controlled by itself. When excavating at an angle below 90 degrees, the boom should be retracted while the jib is retracted, and the degree should be controlled by oneself.