Construction Machine

Abstract

A construction machine with a high degree of freedom in layout is described. The construction machine includes a main body that is revolvable by revolving of a revolving part, a working device connected to one side of the main body, a drive system that drives at least one of the main body and the working device, and a mass body that corrects an unbalanced load acting on the main body by driving the working device, in which at least a part of the drive system is held by the mass body.

1 . A construction machine comprising:
 a main body unit revolvable by revolving of a revolving part;   a working device connected to one end side of the main body unit;   a drive system that drives at least one of the main body unit and the working device; and   a mass body that corrects an unbalanced load acting on the main body unit by driving the working device,   wherein at least a part of the drive system is held by the mass body.   
     
     
         2 . The construction machine according to  claim 1 , wherein
 the drive system includes an engine, and   the mass body holds the engine.   
     
     
         3 . The construction machine according to  claim 1 , wherein
 the drive system includes a fuel tank that stores fuel, and   the mass body holds the fuel tank.   
     
     
         4 . The construction machine according to  claim 3 , wherein the fuel tank stores fuel that does not emit greenhouse gas. 
     
     
         5 . The construction machine according to  claim 1 , wherein
 the drive system includes a generator that supplies power, and   the mass body holds the generator.   
     
     
         6 . The construction machine according to  claim 1 , wherein the mass body moves according to movement of the working device. 
     
     
         7 . The construction machine according to  claim 1 , further comprising a leakage detection sensor that detects leakage of fuel used in the drive system. 
     
     
         8 . The construction machine according to  claim 7 , wherein the leakage detection sensor detects the fuel in a gas state. 
     
     
         9 . The construction machine according to  claim 7 , further comprising a control device that moves the mass body to an outside of the main body unit when the leakage detection sensor detects the leakage of the fuel. 
     
     
         10 . The construction machine according to  claim 1 , further comprising a notification device that notifies that the mass body moves. 
     
     
         11 . A construction machine comprising:
 a main body unit revolvable by revolving of a revolving part;   a working device connected to one end side of the main body unit;   a liquid tank that is provided inside another end side of the main body unit and stores liquid fuel that does not emit greenhouse gas; and   a take-off and landing portion which is provided in the main body unit and at which an unmanned flying object is capable of taking off and landing.   
     
     
         12 . The construction machine according to  claim 11 , wherein a part of a power supply that supplies power to the unmanned flying object is provided in the take-off and landing portion. 
     
     
         13 . The construction machine according to  claim 12 , further comprising a blocking unit that blocks noise from the power supply. 
     
     
         14 . The construction machine according to  claim 11 , wherein an antenna is provided on an upper surface of the main body unit. 
     
     
         15 . A construction machine comprising:
 a main body unit revolvable by revolving of a first revolving part;   a first working device connected to one end side of the main body unit;   a second working device connected to another end side of the main body unit;   a housing unit revolvable by a second revolving part different from the first revolving part; and   a liquid tank that is provided in the housing unit and stores liquid fuel that does not emit greenhouse gas.   
     
     
         16 . The construction machine according to  claim 15 , wherein the liquid fuel stored in the liquid tank is ammonia. 
     
     
         17 . The construction machine according to  claim 15 , further comprising a control device that controls the first revolving part, the second revolving part, the first working device, and the second working device. 
     
     
         18 . The construction machine according to  claim 17 , wherein the control device performs control to revolve the first revolving part and the second revolving part, and control to revolve the second revolving part without revolving the first revolving part. 
     
     
         19 . The construction machine according to  claim 17 , wherein the control device revolves the second revolving part when at least one of the first working device and the second working device performs operation different from the revolving. 
     
     
         20 . The construction machine according to  claim 15 , wherein the housing unit is provided at an upper part of the main body unit.