Work equipment, comprising: a work equipment main body including a first structural body (22, 28), a first travel unit (24, 26) provided on the first structural body (22, 28), a first travel drive unit for driving the first travel unit (24, 26), a first energy source for supplying energy to the first travel drive unit, and a work unit, characterized in that the work equipment further comprises: a container device including a second structural body (72, 88, 92), a second travel unit (74, 76) provided on the second structural body (72, 88, 92) and including a pair of front wheels and a pair of rear wheels having a larger diameter than the front wheels, a second travel drive unit for driving the rear wheels of the second travel unit (74, 76), a second energy source for supplying energy to the second travel drive unit, and a collected article container unit configured to store an article collected by the work unit, the container device being detachably connected to the work equipment main body and being configured to travel by itself in a detached state by using the second travel unit (74,76), wherein the work equipment main body is provided with a container lifting device configured to lift the container device as a whole relative to the work equipment main body when the work equipment main body and the container device are engaged with each other, and the second structural body (72, 88, 92) is secured to the first structural body (22, 28) when the work equipment main body and the container device are connected to each other, and the container device is provided with a wheel lifting device for vertically moving the pair of rear wheels relative to the second structural body (72, 88, 92). a work equipment main body including a first structural body (22, 28), a first travel unit (24, 26) provided on the first structural body (22, 28), a first travel drive unit for driving the first travel unit (24, 26), a first energy source for supplying energy to the first travel drive unit, and a work unit, characterized in that the work equipment further comprises: a container device including a second structural body (72, 88, 92), a second travel unit (74, 76) provided on the second structural body (72, 88, 92) and including a pair of front wheels and a pair of rear wheels having a larger diameter than the front wheels, a second travel drive unit for driving the rear wheels of the second travel unit (74, 76), a second energy source for supplying energy to the second travel drive unit, and a collected article container unit configured to store an article collected by the work unit, the container device being detachably connected to the work equipment main body and being configured to travel by itself in a detached state by using the second travel unit (74,76), wherein the work equipment main body is provided with a container lifting device configured to lift the container device as a whole relative to the work equipment main body when the work equipment main body and the container device are engaged with each other, and the second structural body (72, 88, 92) is secured to the first structural body (22, 28) when the work equipment main body and the container device are connected to each other, and the container device is provided with a wheel lifting device for vertically moving the pair of rear wheels relative to the second structural body (72, 88, 92). a container device including a second structural body (72, 88, 92), a second travel unit (74, 76) provided on the second structural body (72, 88, 92) and including a pair of front wheels and a pair of rear wheels having a larger diameter than the front wheels, a second travel drive unit for driving the rear wheels of the second travel unit (74, 76), a second energy source for supplying energy to the second travel drive unit, and a collected article container unit configured to store an article collected by the work unit, the container device being detachably connected to the work equipment main body and being configured to travel by itself in a detached state by using the second travel unit (74,76), wherein the work equipment main body is provided with a container lifting device configured to lift the container device as a whole relative to the work equipment main body when the work equipment main body and the container device are engaged with each other, and the second structural body (72, 88, 92) is secured to the first structural body (22, 28) when the work equipment main body and the container device are connected to each other, and the container device is provided with a wheel lifting device for vertically moving the pair of rear wheels relative to the second structural body (72, 88, 92).