JPH086124Y2 - Foot plate in construction work vehicle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a foot plate for mounting an operator's foot on a cockpit floor of a small construction work vehicle.

[Problems to be solved by conventional techniques and devices]

In an ultra-compact construction work vehicle where only one operator can barely ride, the vehicle width is narrow and the cockpit floor is also small. There was a problem that the control lever could not be operated as desired.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to solve the problems.It is possible to pass through a narrow passage or the like, and moreover, the foot of an operator is stepped on during unstable work on an uneven terrain or a sloping ground. It is an object of the present invention to provide a foot plate for a construction work vehicle that has a flashy, stable posture and can be safely and reliably operated.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention is to install a pair of left and right foot plates on both front sides of a cockpit floor of a construction work vehicle, and to arrange the left and right foot plates at a retracted position in the floor.
It features a foot plate in a construction work vehicle that can be displaced and fixed to the outside of the floor.

[Action]

Therefore, if the foot plates provided on both sides of the front part of the cockpit floor are fixed to the retracted position in the floor, narrow passages can be passed, and if the foot plate is displaced and fixed to the overhanging position on the floor, the space between the left and right foot plates can be increased. The width of the operator's foot is widened, and the operator's foot can be used during unstable work on uneven terrain or on slopes, so that the operator can operate safely in a stable posture and with reliable operation that does not cause erroneous operation. Will be able to.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

1 to 7, reference numeral 1 denotes a construction work vehicle adopting the present invention, and the work vehicle of the embodiment exemplifies a mini excavator, in which a crawler-type lower traveling body 2 and an upper revolving body 3 have a swivel base. The upper revolving superstructure 3 is provided with a shovel work machine 5 in the front, a cockpit 6 behind it, and a driving part 7 accommodating an engine, a hydraulic pump, etc. in the rear,
An earth discharging plate 8 is provided in front of the crawler type traveling unit 2.

The cockpit 6 is provided with a guardrail 9, a traveling control lever 10 for the lower traveling body 2, a brake pedal 11, a monolever 12 for operating a working machine, a seat 13 and the like from the front, and the present invention is provided on both front sides of a floor 14. Left and right pair of foot plates 15,15
Is provided.

The foot plate 15 is rotatably supported on the floor by a pin 17 which is inserted into an outer hole 16 at the rear end of a rectangular plate whose toe side is bent upward, and an inner hole at the rear end. 18, a large diameter portion 19b is formed below the small diameter portion 19a, and the foot plate
A small-diameter portion 19b of a stopper 19 which is constantly urged upward by a leaf spring 20 fixed to 15 is inserted.

On the other hand, on the floor 14 side, the foot plates 15 and 15 are arranged at the retracted position in the floor, which is juxtaposed in the left-right direction of the machine body, and the inverted eight-shaped outwardly projecting position of the foot plate 15 which is rotated around the pin 17 and opened to the front of the machine body. Stopper when displaced to each position of
Locking holes 21 and 22 for engaging the large-diameter portion 19b of 19 to fix both foot plates 15 and 15 to the above-mentioned positions, and connecting the locking holes 21 and 22 to the diameter of the small-diameter portion 19b of the stopper 19. An arc-shaped guide hole 23 having the same width and having a radius between the pin 17 and the locking hole 21 is provided. Reference numeral 15a is a reinforcing rib provided on the back surface of the foot plate 15.

Therefore, when the left and right foot plates 15, 15 are positioned at the retracted position in the floor that is parallel to the machine left-right direction, the large diameter portion 19a of the stopper 19 rises due to the biasing force of the leaf spring 20 and the retracted position of the floor 14 in the floor. The foot plates 15 and 15 are fixed to the retracted position in the floor by engaging with the locking holes 21 of the work vehicle 1, so that the work vehicle 1 can pass through a narrow passage or the like.

When performing heavy work on uneven terrain or sloping ground, step on the stopper 19 with the heel and press the stopper 19 as shown in Fig. 6.
The large-diameter portion 19b of the is removed from the locking hole 21 at the retracted position in the floor. Then, when the toe is shaken to the outside of the machine while stepping on the stopper 19, the foot plate 15 rotates about the pin 17 as a fulcrum, and when the heel is separated from the stopper 19 when it reaches the floor overhang position, the stopper 19 is a leaf spring. The urging force of 20 causes the large-diameter portion 19b to return to its upward position, and the large-diameter portion 19b extends outwardly of the floor.
, And the foot plate 15 is fixed to the floor overhang position. If this is done on the left and right foot plates 15,15, the distance between the left and right foot plates 15,15 will be wide and the shape of the inverted figure that opens to the front of the aircraft will be good for the operator's foot treads and rough terrain. It becomes possible to perform intense work on a sloping ground, etc., in a stable posture, safely, and with a reliable driving operation at hand. The leaf spring 20 may be a bamboo spring, a coil spring, or the like.

In this work vehicle 1, since the above-mentioned foot plate 15 extending outwardly from the floor is provided, the guard rail 9 is widened to the full width A of the body and the lower left and right foot plates 15 are provided as shown in FIG. The inner width B is reduced to avoid 15. Therefore, when passing through a narrow passage or the like, it is possible to obtain an effect that obstacles such as being hindered from progressing due to being caught on the lower branches of the surrounding trees or damaging the trees can be avoided.

Further, in the work vehicle 1, the boom cylinder 24 and the soil discharge plate cylinder 25, which are easily soiled by mud or the like, are provided with the cylinder rod protection cover 26.

This cylinder rod protection cover 26 is shown in FIGS.
As shown in the figure, one end of a flat plate whose longitudinal edges are bent in a groove shape is fixed to the working end of the cylinder rod 27 with bolts 28, etc., and this is the end of the boom cylinder 24 on the cylinder rod 27 side. Gite plate with V-shaped cross section, one end of which is fixed to the
It is slidably fitted into 29. Therefore the cylinder rod
When 27 expands and contracts, the cylinder rod protection cover 26 slides on the guide plate 29 and moves together with the cylinder rod 27 to protect dirt and the like from adhering to the cylinder rod 27.

In this cylinder rod protection cover, unlike the conventional protection cover, the guide plate does not slide over the entire area between the flat plate guide and the flat plate cover, but the gap between the V-shaped guide and the flat plate cover causes foreign matter to enter. However, it is easy to come out naturally, the protective cover is not damaged, and sliding is performed smoothly.

[Effect of device]

In summary, according to the present invention, a pair of left and right foot plates are attached to both front sides of the cockpit floor of a construction work vehicle, and the left and right foot plates can be displaced and fixed between the retracted position in the floor and the extended position outside the floor. Therefore, if you fix the foot plates provided on both front sides of the cockpit floor to the retracted position in the floor, you can pass through a narrow passage, etc.If you displace and fix the foot plate to the outside protruding position of the floor, The foot plate spacing is widened, and the foot width of the operator's foot expands, allowing the operator's foot tread to be used during unstable work on uneven terrain or on slopes, etc. It is possible to obtain an effect that a reliable driving operation that does not occur can be performed.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 is a plan view of a main portion of a mini excavator adopting the present invention, FIG. 2 is an overall side view of the mini excavator, and FIG. The figure is a plan view of the foot plate, FIG. 4 is a partial cross-sectional side view of the foot plate, FIG. 5 is a partial cross-sectional rear view of the foot plate at a fixed position, and FIG. 6 is a stepped state of the foot plate stopper. Rear view of Fig. 7, Fig. 7 is a front view of the cockpit, Fig. 8
Fig. 9 shows the cylinder rod protection cover.
FIG. 8 is a partially cutaway side view, and FIG. 9 is a front view. 1 ... Construction work vehicle, 6 ... Pilot seat, 14 ... Floor, 15 ...
… Foot plate, 17 …… Pin (pivot point), 19 …… Stopper, 21 …… Floor retracting position locking hole, 22 …… Floor outside overhanging position locking hole, 23 …… Guide hole.

Claims (1)

[Scope of utility model registration request] 1. A pair of left and right foot plates are attached to both front sides of a cockpit floor of a construction work vehicle, and the left and right foot plates are displaceably fixed between a retracted position in the floor and an extended position outside the floor. A foot plate in a construction work vehicle characterized by the above.