JPS6357500A - Multi-joint arm machine - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an articulated arm machine used for civil engineering and continuous line work, and in particular to an articulated arm suitable for reducing the height of the arm when stored. Regarding machines.

[Conventional technology]

The conventional device of this type is the master cleat PR with boom.
21-51 (Kyokuto Kaihatsu), a hydraulic cylinder that drives the arms and a part of the link mechanism were arranged between the arms. Therefore, space is secured between the arms for arranging the hydraulic cylinder and the bracket for mounting it.

[Problem that the invention seeks to solve]

The above-mentioned conventional technology does not take into consideration the space required for storage, and the height of the arm during storage is high, resulting in a problem in that the height of the entire device becomes high. This effect is large when the number of arms is large.

The object of the present invention is to minimize the height of the arm when it is retracted.

[Means for solving problems]

The above object is achieved by arranging the actuator or the actuator and the linkage mechanism between the arms so as to be located outside the arms.

[Effect]

Since the actuator or the actuator and the link mechanism are arranged outside the arms, there are no obstacles between the arms. On the other hand, since the base of the arm has a dogleg-shaped structure, it can be folded so that the 7 link surfaces of the arms meet. Therefore, the height of the arm when stored is the sum of the heights of each arm, and the total height of the arm and, as a result, the height of the machine can be reduced. ? This will be explained using the lJt-M1 diagram. The articulated arm machine shown in the embodiment has three arms rotatably mounted on a trut or crawler (not shown).
Consists of articulated arms. Since the first arm 1 has a small rotation angle, the first hydraulic cylinder 4 is directly attached to it, and the first arm 1 moves up and down as the first hydraulic cylinder 4 moves.

Since the second arm 2 and the third arm 3 have a wide rotation angle, the movement of the hydraulic cylinder is transmitted to the arms via the link mechanism.

Since the second hydraulic cylinder 5 is not located between the arms, it is attached to a bracket 12 provided on the first arm 1.

Since the second half-moon link 7 is also not located between the arms, it is not particularly arranged on the outside of the arms. When the second hydraulic cylinder 5 is retracted, the second semilunar link 7 is pulled, and then the second linear link 8 is pulled, causing the second arm 2 to move.

3rd hydraulic cylinder 6% 3rd half-moon link 9 is the 1st arm! Since it is located between the two arms 2, it is placed outside of the second arm 2. In this embodiment, a total of two third hydraulic cylinders 6 are arranged on both sides of the second arm 2. When the third oil cylinders 6 on both sides are contracted, the third half-moon link 9 is pulled.

Next, the third linear link 10 is pulled and the third arm 3 moves.

2nd arm 2% The third arm 3 has a link mechanism and the base of the arm is bent into a dogleg shape in order to widen the rotation angle of the arm.

Claims (1)

[Claims] 1. In a multi-joint arm machine consisting of multiple arms and an actuator for moving them, or an actuator and a link mechanism, the actuator that is sandwiched between the arms, or the actuator and link mechanism, is placed on the outside of the arm. An articulated arm machine characterized by: