JPH0321727A - Hydraulic shovel - Google Patents

Abstract

PURPOSE:To allow the movement of an operating machine to agree with the direction of an operator by mounting the operating machine to a turning body so that the machine can oscillate right and left around a pin, and interlocking the front gear of the operating device with the driving gear, the cap gear, the counter gear of the turning body. CONSTITUTION:An operating machine 3 is mounted to a turning body 2 so that it can oscillate right and left around a pin. A front gear 8 installed integrally with the operating machine 3 is engaged with a driving gear 9 driven by a hydraulic cylinder, etc., and between a cab gear 10 for turning a cab 5 and the front gear 8, a counter gear 11 engaged with both gears is provided. When the driving gear 9 is rotated, the operating machine 3 oscillates around the pin 7 through the front gear 8 and the cab 5 turns through the counter gear 11 and the cab gear 10 in the same direction and by the same angle as those of the operating device 3. Thus, the movement of the operating machine 3 the can agree with the direction of an operator, in the direction of a cutting groove.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hydraulic excavator that can particularly easily dig ditches. [Prior Art] The hydraulic excavator (first example) shown in Fig. 3 has a working machine (front attachment) 3 mounted on the front part of a rotating structure 2 rotatably mounted on a track-type traveling structure 1. It is installed so that it can be moved left and right using Bin 4 as a fulcrum, as shown by the chain line. A driver's seat 4 equipped with an operating lever is installed on one side of the revolving body 2, and a counterweight 6 is attached to the rear end.

In the hydraulic excavator (second example) shown in Fig. 4, the work implement 3 is attached to the front part of the revolving structure 2 so that it can be slid left and right as shown by the chain line.
Items with the same reference numerals as in Figure 3 represent the same or equivalent items.

[Problems to be Solved by the Invention] In the first example described above, it is possible to change the mounting angle of the work equipment 3 in the left and right direction, but when it is changed, the operational feeling of the operator and the movement direction of the work equipment packet etc. There is a misalignment, making it difficult to operate. In the second example, the movement of the work equipment 3 matches the operator's sense, but due to its structure, the work equipment cannot be moved far from its normal position, and the range in which it can dig the gutter is narrow. 6. This invention has been made in view of the above, so if necessary, the working machine can be shifted over a large range from its normal position, and in that state, the direction of travel of the excavator and the working machine can be adjusted relative to the direction of the trench to be dug. The purpose of the present invention is to provide a hydraulic excavator that can match the movement of the operator and the direction of the operator. [Means for Solving the Problems] In order to achieve the above object, the present invention provides a structure in which a working machine is attached to a revolving body so as to be able to swing from side to side, and 6) a driver's seat or a driver's cab can be rotated. The operator's seat,
Alternatively, the present invention is characterized by providing an interlocking means for rotating the operator's cab in the same direction and angle as the working machine. [Effect 1] When the work machine is swung by the swing means, the driver's seat or cab is rotated in the same direction and at the same angle as the work machine through the interlocking means. [Embodiment] An embodiment of the present invention will be described below with reference to FIG. 1 and FIG. 2. In both Figures, the same reference numerals as in Figures 3 and 4 represent the same or equivalent elements.

The work equipment 3 is attached to the revolving body 2 so as to be able to swing left and right around the bin 7, and the front gear 8 provided integrally with the work equipment 3 is connected to a hydraulic motor, pressure cylinder, etc. (not shown). It meshes with a drive gear 9 driven by a drive means. A counter gear 11 that meshes with both gears is provided between a cab gear 10 for rotating the driver's seat 5 (or a driver's cab) and a front gear 8.

When the drive gear 9 is rotated, the working machine 3 swings around the bin 7 via the front gear 8, and the driver's seat 5 is rotated via the counter gear l1 and the cab gear IO.
(or the operator's cab) is configured so that it rotates in the same direction and by the same angle as the work equipment. Therefore, the movement of the working machine 3 always coincides with the front direction of the operator.

As shown in FIG.
If the revolving body 2 is swung at a right angle to the traveling body 1, the direction of the trench to be excavated, the traveling direction of the hydraulic excavator, the movement of work III 3, and the direction of operation H will all match, unlike the conventional The work equipment 3 can be moved from its normal position to a range that is impossible with other hydraulic excavators. Note that the means for rotating the working machine 3 and the driver's seat 5 (or the driver's cab) is not limited to the above-described gear, but may also be a cylinder, a link, a wire, or the like.

[Effects of the Invention] As explained above, according to the present invention, by swinging the working machine as necessary, the driver's seat or the driver's cab is rotated in conjunction with each other, and the direction of the trench to be dug is adjusted. This makes it possible to match the direction of travel of the excavator, the movement of the work equipment, and the direction of the operator, thus improving work efficiency and safety6.

[Brief explanation of the drawing]

FIGS. I and 2 are plan views showing one embodiment of the present invention, and FIGS. 3 and 4 are plan views showing conventional hydraulic excavators, respectively. l... Traveling body, 2... Swivel body, 3... Working machine, 5
... Driver's seat, 7... Bin, 8... Front gear,
9... Drive gear, 10... Cab gear, 11...
Counter gear l Fig. 6 Fig. 2 Fig. 3 Fig. 6 Fig. 4

Claims (1)

[Claims] In a hydraulic excavator with a rotating body mounted on the traveling body so that it can rotate freely, a driver's seat or a driver's cabin equipped with an operating lever is installed in a part of the rotating body, and a working machine is attached to the front part, the rotating body is , install the work equipment so that it can swing from side to side, install the driver's seat or driver's cab so that it can rotate, and provide a means for rocking the work equipment and a mechanism that allows the driver's seat or driver's cab to rotate as the work equipment swings. the room in the same direction as the work equipment,
Moreover, a hydraulic excavator is characterized in that it is provided with interlocking means for rotating the same angle.