JPH0344840Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a rotating excavator that reduces the amount of movement of the operator's cab during turning, thereby reducing driver fatigue.

BACKGROUND ART Conventionally, a rotating excavator such as a power swivel has a driver's cab provided on the upper revolving body side, and is operated from the driver's cab.

In addition, since the upper revolving body a is equipped with a working machine as shown in Fig. 5, in order to prevent the forward view from being obstructed by this working machine, conventionally the upper revolving body a was operated at the front side of the upper revolving body a. Room b is set up.

In this position, the forward visibility is good, so the swing excavator can be driven safely, and the machine can be operated while constantly watching the excavation status with the bucket, which has the effect of improving work efficiency. , the distance from the turning center c to the driver's cab b is long.

Problems to be Solved by the Invention For this reason, the driver is swayed left and right about the turning center c every time the upper revolving body a turns. In general, the human central nervous system is more fatigued when the human central nervous system is swayed from side to side than when moving back and forth, and the driver's seat itself is conveniently designed to accommodate back and forth movement. There were problems with early fatigue and poor work efficiency.

This invention was made for the purpose of improving the above-mentioned problems.

Means and operation for solving the problem By providing a driver's cab on the upper rotating body so as to be able to move back and forth, and by linking the movement of the operator's cab with the rotation of the upper rotating body, even when the upper rotating body turns, This rotating excavator reduces the driver's swinging from side to side when turning by making the operator's cab appear to be in almost the same position.

Embodiment An embodiment of this invention will be described in detail with reference to the drawings. In the figure, reference numeral 1 denotes a self-propelled crawler-type undercarriage, and an upper rotating body 2 is installed on the undercarriage 1 in a freely rotating manner. . A working machine 3 is provided at the center of the front of the upper revolving body 2, and a power chamber 4 housing a power engine (not shown) is provided at the rear. A guide rail 5 is installed on the side from the front end to the rear end of the upper revolving structure 2, and a driver's cab 6 is placed on the guide rail 5 so as to be movable along the guide rail 5. A driver's seat and various control devices (none of which are shown) are provided in the driver's cab 6.

The above-mentioned control device is composed of a group of electric switches controlled by an operating lever, and signals from the group of switches are transmitted to the upper revolving structure 2 by an electric cable (not shown).

The above-mentioned electric cable is wired at a length that has a sufficient length so as not to hinder the movement of the operator's cab 6, and the above-mentioned electric cable is connected to the solenoid valve group installed in the hydraulic circuit that drives the work equipment 3 and around the suspension. These solenoid valves are turned on and off by signals sent from the switch group, and the hydraulic pressure supplied from the solenoid valve group controls the work equipment 3 and the suspension. Various actuators provided in 1 and the like are controlled.

The operator's cab 6 is driven by a driving means 7 such as a hydraulic cylinder attached to the bottom of the upper revolving body 2.
It is designed to move back and forth in conjunction with the rotation of the upper revolving structure 2 as follows.

That is, the turning angle of the upper revolving structure 2 is detected by a turning angle detector 10 provided on a turning motor 9 or the like that turns the upper revolving structure 2. The turning angle detected by the turning angle detector 10 is taken into the control circuit 11, and the amount of movement of the driver's cab 6 relative to the turning angle is calculated from the data inputted in advance. (not shown), the driving means 7 is controlled by the operating valve 12, and as the upper revolving structure 2 rotates, the operator's cab 6 moves as shown in FIG. It is moved back and forth as shown in C to C. As a result, even if the revolving structure 2 turns, the driver's cab 6 appears to remain in a fixed position and only changes its direction, and the driver inside the driver's cab 6 is not swayed left or right, so the upper Fatigue is significantly reduced compared to the conventional structure in which the structure is rotated together with the rotating structure 2.

Effects of the invention As detailed above, this invention has the following advantages: When the vehicle moves forward or excavation work is performed using the work equipment 3, the driver's cab 6 is located at the front side of the upper revolving structure 2. The visibility ahead is good, which makes it possible to drive the vehicle safely, and even when digging a hole etc. with the work equipment 3, the tip of the work equipment can be clearly seen from inside the driver's cabin, so you can check the work status while checking the work equipment 3. can be operated, improving work efficiency.

In addition, when rotating the upper revolving body 2, it is not necessary to secure the front view or directly look at the work equipment 3, so by moving the operator's cab 6 rearward in conjunction with the rotation of the upper revolving body 2. Since the driver's cab 6 is kept in almost the same position, the driver inside the driver's cab 6 will not be swayed from side to side during work, which can significantly reduce driver fatigue. Work efficiency can be improved.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a plan view, Fig. 2 is a side view, Fig. 3 is a block diagram of the control system, Fig. 4 A to C are operational views, and Fig. 5 is a conventional one. FIG. 1 is the suspension, 2 is the upper revolving body, 3 is the work equipment,
4 is the power room, 5 is the guide rail, 6 is the driver's cab, 7
is the driving means.

Claims (1)

[Scope of utility model registration request] An upper revolving body 2 having a work implement 3 and a power chamber 4 is rotatably provided on a self-propelled suspension 1, and is located on the side of the work implement 3 and power room 4, and is located at the front and rear of the upper revolving body 2. A guide rail 5 is laid in the direction,
A driver's cab 6 is provided on this guide rail 5 and is moved back and forth by a driving means 7 consisting of a hydraulic cylinder.
A revolving excavator in which the driving means 7 is controlled by a control system so that the operator's cab 6 is moved rearward to the front part of the revolving upper structure 2 and to the rear as the upper revolving structure 2 rotates.