JPH0621978Y2 - Construction machinery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a construction machine, in particular, a construction machine such as a power shovel equipped with a swivel base, and particularly to a construction machine characterized by the structure of its operating cabin. It is a thing.

《Prior Art》 Except for some simple machines, a driver's cabin of a construction machine is usually provided with a driving cabin that protects the driver from wind and rain. Especially, recently, a closed cabin with a door that can be closed. Increasingly possible operating cabins are provided. In the power shovel, as shown in FIG. 7, a swivel base 40 that swivels around a vertical axis on a traveling frame 39 having a traveling device 38.
Is provided, and the driving cabin 41 is mounted on one side (usually the left side of the vehicle body) on the swivel base, and the other side (right side of the vehicle body).
A bucket boom 42 is attached to the vehicle, and an engine room 43 is provided in the rear portion.

Conventionally, the operation cabin 41 of such a construction machine has a box-like shape with a rectangular plane, and there is a case where a part of the crane vehicle is provided with an operation cabin having a sliding door. The machine is provided with an outer opening type door 44 that opens and closes by rotating the trailing edge around a vertical axis.

<Problems to be solved by the invention> In the power shovel, the driver operates the cabin 4 during the work in order to carry out the work while checking the operating state of the bucket.
Although it is often the case that the operator leans out from the doorway of No. 1, the driving cabin 41 provided with the conventional door 44 that opens outwards carelessly turns the swivel base 40 with the door 44 open.
When the door is turned, there is a problem that the door collides with another worker and causes harm, or the door collides with a surrounding structure or the like and damages the door 44.

An object of this invention is to provide a construction machine that solves the above problems.

<< Means and Actions for Solving the Problem >> The present invention relates to a construction machine equipped with a swivel that swivels around a vertical axis on a traveling frame, and displaces the swivel on one side of the swivel to mount the operating cabin. The front and outer side surfaces of which are rotation surfaces centering on the turning center axis (P) of the swivel base, and the outer side surface is provided with a slide type door that opens and closes along an arc rail centering on the center axis. By making the side surfaces other than the front surface and the outer side surface into two straight lines that form a substantially right angle in a plan view, the path of the door does not go out of the path of the rotating body on the running frame, and the path of the door does not move outside. The door is designed so that it does not go out of the path of the upper rotating body so that the door does not collide with other objects when the swivel base turns. In addition, the side surfaces other than the front and outer side surfaces of the operating cabin are configured as two straight lines that are substantially perpendicular to each other in a plan view, so that the cabin space is secured while the cabin space on the center side of the swivel base is minimized. Make sure that there is enough space on the table to place work equipment.

<< Embodiment >> FIGS. 1 to 6 show an embodiment of the present invention. In the figure, the same members as those described in the conventional example are designated by the same reference numerals, and the description thereof is omitted. In FIG.
1 is a driving cabin mounted on a swivel base 40, 2 is a floor surface of the driving cabin 1, 3 is a front surface, 4 is a rear surface, 5 is a side surface inside the vehicle, 6 is a side surface outside the vehicle, 7 Is the ceiling surface.

The operation cabin 1 is formed by retracting the front upper portion 3a thereof, and a transparent plate 8 which can be opened and closed is provided at a connecting portion between the front surface 3 and the ceiling surface 7. The outer side surface 6 of the operation cabin 1 is formed by a partial rotation surface having the turning center axis P of the turning base 40 as a central axis, and the circular arc rails 13 and 1 to be described later.
8 and 23 are provided along this partial rotation surface. The door 9 is formed in the same shape as the side surface 6, and is opened and closed by being guided by the arc rails 13, 18, 23. The door 9 is formed of a single glass plate, and its upper edge portion is gently curved inward, and a metal strip 10 is attached to the door 9 substantially at the center thereof.

2 and 3 show a sliding structure of the upper part of the door. 11 is an eave formed by extending the ceiling surface 7,
Reference numeral 12 is a support bracket suspended from the eaves 11, 13 is a first circular arc rail projecting horizontally from the lower end of the supporting bracket 12, and 14 is a roller rolling on the circular arc rail 13.
Reference numeral 15 is a mounting plate to which a roller shaft 16 is fixed, 17 is a screw for fixing the mounting plate 15 to the door 9, and 18 is a horizontal L-shaped second arc rail projecting from the center of the side surface of the support bracket 12. , 19 are the second rollers guided by the arc rails 18, 2
Reference numeral 0 denotes an arm to which a roller shaft 21 is fixed, the base end of which is fixed to the door 9 via a mounting plate 16. Reference numeral 22 is a void formed by the eaves 11 and the arc rail 18, and the door 9 is placed in the void.
The upper edge of is loosely fitted.

Fig. 4 shows the guide structure at the bottom of the door.
Is a horizontal L-shaped third circular arc rail attached to the floor 2, 24
Is a third roller guided by the circular rail 23, 25 is a roller shaft, 26 is an arm to which the roller shaft 25 is fixed, 27 is a mounting plate to which the arm is fixed, 28 is a mounting plate 27 below the door 9. It is a screw that is fixed to.

The first roller 14 and the second roller 19 are mounted on the upper front and rear corners of the door 9, and the third roller 24 is mounted on the lower front and rear corners of the door 9, respectively. The door 9 is circled along the rails 13, 18, 23. It moves in an arc and opens and closes. Since the upper edge portion of the door 9 is loosely fitted in the eaves, wind and rain will not enter the driving cabin 1. If necessary, the sealing material 29 is attached to the tip of the eaves.

FIG. 5 is a cross-sectional plan view of the handle portion of the door. 30 is an outer handle fixed to the strip 10 of the door with bolts 31, 32 is an inner handle fixed to the strip 10 with rivets 33, 34 is a support column for reinforcing the side surface 6, and 35 is an inside of the side surface 6. The fixed gas spring 36 is a rod of the gas spring 35, and the tip of the gas spring 35 penetrates the through hole 37 of the support column 34 and is connected to the inner handle 32. The door 9 is always urged in the closing direction by the gas spring 35, and the driver pushes the outer or inner grips 30 and 32 in the opening direction of the door 9 to open the door 9.
Open and enter driving cabin 1.

In the above embodiment, the central axis of the rotating surface of the outer side surface 6 of the operating cabin 1 is made to coincide with the central axis of swivel of the swivel base 40. However, as another method, for example, when the door 9 is opened, the door 9 is opened. The arc radius of the outer side surface 6 of the driving cabin may be determined according to the arc radius of the side surfaces of the engine room 43 and the counterweight so that the rear end moves along the arc side surfaces of the engine room 43 and the counterweight. It's a good way.

FIG. 6 is a view showing an example of another operation cabin which can be adopted in the present invention. The driving cabin shown in FIG. 6 has a front surface 3
The outer side surface 6 and the outer side surface 6 are integrally formed into a partial spherical surface. The arc rails 13, 18, and 23 are provided along the partial spherical surface, and the door 9 has the same spherical surface shape as the side surface 6. And is opened and closed by being guided by the arc rails 13, 18, and 23.

<Effects of the Invention> In the present invention, in order to maximize the space outside the driving cabin, the outer side surface and the slide door arranged there are curved surfaces centering on the central axis of the swivel base, and The trajectory can be designed so as not to go out of the trajectory of the rotating body on the traveling frame, and it is safe because the door does not collide with other objects when the swivel base turns. In addition, the side surfaces other than the front and outer side surfaces of the operating cabin are configured as two straight lines that are substantially right angles in plan view, so that the cabin space is minimized while the cabin space is secured, and the swivel base is minimized. A sufficient space for disposing work equipment and the like can be secured above.

[Brief description of drawings]

1 to 6 show a first embodiment of the present invention. FIG. 1 is a perspective view of a driver's seat portion of a construction machine, and FIGS. 2 to 4 are sliding structures of doors of a driving cabin. 5 is a sectional view of the handle portion of the door of the driving cabin, FIG.
FIG. 7 is a perspective view of another operating cabin, and FIG. 7 is a side view of a conventional example. In the figure, 1: driving cabin, 6: outer side surface 9: door, 13: first arc rail, 18: second arc rail, 23: third arc rail 39: traveling frame, 40: swivel base P: swivel Center of rotation of platform

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-1-198929 (JP, A) JP-A-51-100527 (JP, A) JP-A-60-203568 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A construction machine equipped with a swivel base (40) which swivels about a vertical axis on a traveling frame (39), and which is mounted on one side of the swivel base to mount the operating cabin. ) And the outer side surface (6) of the swivel base (40)
Of the circular arc rail (13, 18,
By providing a slide type door (9) that opens and closes along 23), and by making the side surfaces other than the front surface (3) and the outer side surface (6) into two straight lines that form a substantially right angle in plan view, A construction machine characterized in that the locus of the door does not go out of the locus of the rotating body on the traveling frame.