	US 12,077,940 B2
	Systems, assemblies, and methods for implementing key plate for locking cab to main body of work machine
Takeshi Tsuneyoshi, Akashi (JP); Kunitomo Shimizu, Akashi (JP); Kazumasa Matsumura, Akashi (JP); and Shuji Kidoguchi, Akashi (JP)
Assigned to Caterpillar SARL, Geneva (CH)
Filed by Caterpillar SARL, Geneva (CH)
Filed on Sep. 13, 2021, as Appl. No. 17/472,703.
Prior Publication US 2023/0079417 A1, Mar. 16, 2023
Int. Cl. E02F 9/16 (2006.01); B62D 33/063 (2006.01); B62D 33/067 (2006.01); B62D 33/07 (2006.01)

CPC E02F 9/166 (2013.01)

20 Claims

1. A work machine comprising:

a main body; and

a cab riser including a cab and a frame, the cab being uprightly positioned on the work machine in a first position, and being tilted forward in a second position, and the frame comprising a first plate to contact a second plate provided on the main body in the first position;

wherein the first plate and the second plate are coupled together to sandwich a key plate when the cab is in the first position, the key plate being disposed in a space created by a first recess on a lower surface of the first plate and a second recess on an upper surface of the second plate in a cross sectional view of the first plate and the second plate, the second recess being aligned with the first recess vertically when the cab is in the first position, and

wherein the key plate includes at least one first contact surface as a slope surface and at least one top surface, the top surface being adjacent to the slope surface and in parallel with the first plate or the second plate in a vertical direction, in the cross sectional view of the key plate.