JPH04125Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an operating lever device for construction machinery, and particularly to an operating lever device in which an operating lever is movably held in a control box placed in a driver's cab. Regarding.

[Background of the idea]

FIG. 2 is a side view of a hydraulic shovel as an example of a construction machine to which the present invention is applied. In this figure, 1 is a running body forming the lower part, 2
is a revolving body disposed on the traveling body 1, and 3 is a driver's cab disposed at the front portion of the revolving body 2. 4 is a boom rotatably provided on the revolving body 2; 5 is an arm rotatably provided on the boom 4; 6 is a bucket rotatably provided on the arm 5; 7 is a boom for operating the boom 4. The cylinder 8 is an arm cylinder that operates the arm 5, and 9 is a bucket cylinder that operates the bucket 6. These boom 4, arm 5, bucket 6, boom cylinder 7, arm cylinder 8, and bucket cylinder 9 are used for work. It makes up the machine, or the front.

FIGS. 3a and 3b are explanatory diagrams showing a conventional operating lever device of a construction machine equipped on such a hydraulic excavator, and FIG. 3a is a front view including a cross-sectional portion;
b is a side view including a cross section. In these figures, 10 is a floor forming the lower part of the operator's cab 3 illustrated in FIG. 9, a switching valve that controls to selectively drive actuators such as the swing motor that drives the swinging body 2 and the travel motor that drives the traveling body 1; 12, an operating lever that operates this switching valve 11; 13, an operation lever; The control box is mounted on the floor 10 of the chamber 3, and includes a guide 13a that holds the operating lever 12 so that it can be moved, for example, rotated, in the operating direction for switching the switching valve 11, that is, in the direction indicated by the arrow 14 in the third b. ing. Note that 15 is also a control box and is not shown, but there are also an operating lever 12 and a switching valve 1 on the side of this control box 15.
The operating lever and switching valve equivalent to 1 are provided. Bolts 16 and 17 fasten the control boxes 13 and 15 to the floor 10, respectively;
Numerals 8 and 19 are bolts for fastening the casing 3a forming the outer shell of the driver's cab 3 to the floor 10, and 20 is a seat.

In this operating lever device, for example, by rotating the operating lever 12 on the control box 13 side in the direction of the arrow 14 in FIG. Oil is supplied to a predetermined actuator via the switching valve 11, and thereby the traveling body 1 travels, the revolving body 2 turns, or the front rotates to perform excavation work or the like.

By the way, regarding the above-mentioned hydraulic excavator,
Since the height of the front and cab 3 from the ground surface is large, when transporting the hydraulic excavator to a work site, etc., due to traffic law restrictions, the front and cab 3 casings 3a, etc. It may be necessary to remove and transport the product.

In such a case, especially if the housing 3a of the driver's cab 3 must be removed and transported,
In the conventional control lever device shown in FIG. cannot be moved in the direction of the seat 20 (the same goes for the control box 15), and the bent portions 3b and 3c of the casing 3a forming the driver's cab 3 are fastened to the floor 10 using bolts 18 and 19. Therefore, in order to remove the housing 3a upward, for example, first remove the spherical grip part of the operating lever 12, then remove the bolt 16 and pull out the control box 13 upward, and then remove the bolts 18 and 19. Then, the bent portion 3c of the housing 3a is connected to the control box 1.
In order to avoid contact with the casing 3a, it is necessary to move the casing 3a slightly to the left and right as shown in FIG. There is a problem that cannot be foreseen.

[Purpose of invention]

The present invention was devised in view of the actual state of the prior art, and its purpose is to facilitate the removal of the casing forming the driver's cab in a vehicle equipped with a control box inside the driver's cab. The object of the present invention is to provide an operation lever device for construction machinery that can be used in construction machinery.

[Summary of the idea]

In order to achieve this objective, the present invention includes a switching valve mounted on the floor forming the driver's cab, an operating lever that operates the switching valve and is placed near the seat, and a switching valve that operates the switching valve and disposed near the seat. A control lever device for construction machinery comprising a control box that is movable in an operation direction for switching a valve and is mounted on the floor of a driver's cab, wherein the control lever comprises a lower portion connected to the switching valve; , and an upper part that is swingably connected to the lower part, and the position of the connecting part between the lower part and the upper part is set below the upper surface of the control box, and the swing direction of the upper part is set. It is configured such that it is set in a direction different from the above-mentioned operation direction, and moreover, in a direction facing the above-mentioned seat.

[Example of idea]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The operating lever device for construction machinery according to the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of the main parts including a cross section showing one embodiment of the present invention. In this FIG. 1, 3 is a driver's cab, 3a is a housing forming the driver's cab 3, 10 is a floor forming the driver's cab 3, 11 is a switching valve, 13
is the control box, 13a is the guide, 16
18 is a bolt that fastens the control box 13 to the floor 10, and 18 is a bolt that fastens the control box 13 to the floor 10.
These bolts are the same as those shown in FIGS. 3a and 3b described above.

Reference numeral 21 denotes an operating lever for moving the switching valve 11, which is composed of a lower part 21a connected to the switching valve 11, and an upper part 21c rotatably connected to the lower part 21a via a pin 21b. The pin 21b is located below the upper surface of the control box 13, for example, within the control box 13. When the control box 13 is removed, the upper portion 21c moves in a direction substantially perpendicular to the operating direction indicated by the arrow 14 in FIG. 3b, as shown by the two-dot chain line in FIG. In other words, it can swing in the direction toward the seat.

Although not shown, the control box 13
The control lever in the control box located on the opposite side of the control box is constructed in the same manner as the control lever 12 shown in FIG. 3a, for example.

In this embodiment, the housing 3a of the driver's cab 3 is placed on the floor 1.
0, after loosening the bolt 16, move the control box 13 slightly to the left in Figure 1, then remove the bolt 18 and the bolt 19 shown in Figure 3a, and bend the housing 3a. part 3
After moving the housing 3a slightly to the left in FIG. 1 to the extent that the bent portion 3c shown in FIG. 3b and FIG. Housing 3a
Just pull it out upwards. At this time, when the control box 13 moves to the left in FIG.
1c swings or bends. Therefore, movement of the control box 13 is permitted by bending the operating lever 21.

In the embodiment configured in this way, the housing 3
When removing a, control box 13
There is no need to remove the operation lever 21 from the operating lever 21, and therefore, the removal work of the housing 3a is facilitated.
The efficiency of transportation work will be improved.

In the above embodiment, the upper portion 21c of the operating lever 21 is bent in a direction substantially perpendicular to the operating direction illustrated by the arrow 14 in FIG. It is not limited to bending in any direction; in short, it may be bent in a direction different from the direction of the arrow 14, and in a direction toward the seat of the driver's cab 3.

Further, in the above embodiment, the pin 21b portion is located inside the control box 13, but as shown in FIG. If it is sufficiently larger than the diameter of the operating lever 21,
The pin 21b portion may be disposed substantially on the same plane as the floor 10 or at the bottom of the floor 10.

[Effect of idea]

As described above, in the operating lever device for construction machinery of the present invention, the operating lever consists of a lower part connected to the switching valve, an upper part swingably connected to the lower part, and the lower part The position of the connection part of the upper part is set below the top surface of the control box, and the swing direction of the upper part is set in a direction different from the above operation direction, and moreover, in a direction toward the seat. from,
When removing the casing that forms the driver's cab, the control box can be moved toward the seat of the driver's cab, which eliminates the need to remove the control box from the floor. can be easily carried out,
This has the effect of improving the efficiency of transporting construction machinery equipped with the operating lever device, compared to the conventional method.

[Brief explanation of drawings]

Fig. 1 is a front view of main parts including a cross section showing one embodiment of the operating lever device for construction machinery of the present invention;
The figure is a side view of a hydraulic shovel as an example of a construction machine to which the present invention is applied, Figures 3a and 3b are explanatory diagrams showing the operating lever device of a conventional construction machine, and Figure 3a is a cross-sectional view. FIG. 3b is a front view including a cross section. 3... Driver's cab, 3a... Housing, 10... Floor, 1
1...Switching valve, 13...Control box, 13a...Guide, 15...Control box, 16, 17, 18, 19...Bolt, 2
1... Operation lever, 21a... Lower part, 21b
...Pin, 21c...Upper part, 22...Hole.

Claims (1)

[Scope of utility model registration request] a switching valve mounted on a floor forming a driver's cab; an operating lever for activating the switching valve and disposed near a seat; and holding the operating lever so as to be movable in an operating direction for switching the switching valve; In the operation lever device for construction machinery, the operation lever is provided with a control box mounted on the floor of a driver's cab, and the operation lever is swingably connected to a lower portion connected to the switching valve and the lower portion. a connecting portion between the lower part and the upper part is set below the upper surface of the control box, and the swing direction of the upper part is set in a direction different from the operating direction;
Moreover, the control lever device for construction machinery is characterized in that it is set in a direction facing the seat.