Recently，Yu Lixiang, a service engineer of Sany, received a special call.：A customer wants to try to install the upper part of the crane directly on the shore.。

Yu Lixiang was surprised by such demand.， Original ，Customers have been working at fixed points at the wharf of Xiapu, Ningde, Fujian for a long time.，The device does not need to be moved at all，I came up with this idea in order to save costs.。

Yu Lixiang said：“This thing sounds simple.，But it is actually full of great challenges.。”After receiving the task，He went to the scene for the first time.，The complexity of the problem was immediately discovered.。

First，Because it is different from the chassis of traditional crane.，The existing program cannot be used and must be rewritten.；Secondly，In order to reduce the pressure of operation，The customer wants to realize electric drive operation，This requires the addition of a motor in an already compact space.；Finally，Under normal circumstances，Loading operation can only be 180°Rotation，Customers feel that the flexibility of the operation is far from enough.，Slewing must reach 360°。

Yu Lixiang said：“Such service needs are very special.，It's the first time I've met him.。But since the client brought it up,，Even if it's hard，I have to face the difficulties, too.。”

In order to solve the problem of programming，He found the technical team of the factory to discuss many times.，Repeated debugging by shielding part of the signal，Finally, a program that can meet the needs of use is produced.。

Then solve the problem of motor installation.。Yu Lixiang accurately measured all the dimensions of the upper mechanism in place.，Design the space in detail。After he fixed the position of the fuel tank,，Compare the position of hydraulic oil pump and motor，The motor controller is then installed step by step、Cooling system、Take over the wiring、Hydraulic Motor、Oil pump，All the limited space is used skillfully.。

In order to break through the limit of rotation,，Yu Lixiang thought，The cable drum core under the crane can be removed.，Support with modified slip ring，Such a meal is operated.，Successfully implemented 360 of the device°Rotation。

Take over the wiring、Bottom welding、Hardening of cement......Fight for half a month，Finally finished all the work before the time point specified by the customer。

Yu Lixiang has a great sense of achievement.，Sincerely sighed.：“As a service engineer for Trinity.，Not only should we have the ability to persevere in learning，But also have the power of execution.，More importantly, we should have the ability to innovate without fear of all difficulties.，Only in this way can we meet the endless demand of the market.，This mission is also worthy of the mission.，Successfully completed the challenge.。”