Abstract: In the conventional connection and fixture part between a working vehicle and an excavator, a connection pin is made to contact a guide plate to be fixed in position, thereby requiring a high rigidity of the guide plate, accuracy of recreation of positioning of the connection pin, and high cost for manufacturing the guide plate. Thus, a guide plate of a connection portion has a chevron-shaped introduction part including two sector curves. A U-shaped bent member serving as a knob is provided on a rear side surface of a connection pin in the axial direction of the connection pin, so that the proper position of the inserted connection pin is defined as the position thereof when tips of the knob come into contact with the insertion-target member.

Abstract: In the conventional connection and fixture part between a working vehicle and an excavator, a connection pin is made to contact a guide plate to be fixed in position, thereby requiring a high rigidity of the guide plate, accuracy of recreation of positioning of the connection pin, and high cost for manufacturing the guide plate. Thus, guide plate 26 of connection portion 23 has a chevron-shaped introduction part including two sector curves. A U-shaped bent member serving as a knob 33 is provided on a rear side surface of a connection pin 32 in the axial direction of connection pin 32, so that the proper position of the inserted connection pin is defined as the position thereof when tips of knob 33 come to contact the insertion-target member.

Abstract: A lock device is improved in durability by operating the operation member of a boom lock device in a non-contact state to solve a problem in a conventional work machine because there is a problem that the operation member is worn at the lateral rotating part of a boom bracket. In the lock device 51 for locking a boom 16 of the excavating device to the main body, an engaging member is provided on one of the boom and a boom bracket 15 provided on the main body, and an engaged member is provided on the other of the boom and the boom bracket. The engaging member is constituted by a plate formed on one side thereof with a hook part 52a, and on the other side thereof with a slot 52c. A support pin 55 is inserted into the slot, and a stopped 53 is disposed above the support pin, so that the support pin 55 and the stopper 53 support the engaging member.

Abstract: An aspect of the invention provides a pedal structure for traveling vehicle with an operating pedal in which a simple and inexpensive configuration, a simple shape, and a sufficient antiskid effect can be obtained. In the pedal structure for traveling vehicle with the operating pedal, bent portions 61 are provided in end portions of a forward pedal 21 and a reverse pedal 22 which are of an operating pedal, the bent portion 61 is bent toward sides of stepping surfaces 21f and 22f while having an irregular shaped end face 60. The bent portions 61 are provided in opposite end portions of the pedals 21 and 22, and the forward pedal 21 and the reverse pedal 22 are formed in the same shape including an identification mark 62. The identification mark 62 indicating forward or reverse is provided by punching.

Abstract: A lock device is improved in durability by operating the operation member of a boom lock device in a non-contact state to solve a problem in a conventional work machine because there is a problem that the operation member is worn at the lateral rotating part of a boom bracket. In the lock device 51 for locking a boom 16 of the excavating device to the main body, an engaging member is provided on one of the boom and a boom bracket 15 provided on the main body, and an engaged member is provided on the other of the boom and the boom bracket. The engaging member is constituted by a plate formed on one side thereof with a hook part 52a, and on the other side thereof with a slot 52c. A support pin 55 is inserted into the slot, and a stopped 53 is disposed above the support pin, so that the support pin 55 and the stopper 53 support the engaging member.