JPH0720741Y2 - Power shovel swing pedal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a swing pedal of a power shovel.

(Prior Art) FIG. 3 (a) shows an example of various operating levers and swing pedals of a conventionally used power shovel, in which a is a swing pedal, b is a floor, and c ₁ to c ₁ .
c ₆ indicates various operation levers.

Then, for example, as shown in FIG. 3B, if the swing pedal is depressed like X, the swing is rightward, and if it is depressed like Y, the swing is leftward.

(Problems to be solved by the invention) The swing pedal of the conventional power shovel is provided so as to project upward from the floor. Therefore, as the power shovel becomes smaller, the floor becomes narrower and the operator's seat When you sit down, the space you can put your feet in becomes smaller.

The purpose of this invention is to solve the above problems.

(Means and Actions for Solving the Problem) The present invention has been made in view of the above-mentioned points, in which the pedal is a pair of front and rear stepping pedals, and the rotary cylinder portion of the front pedal is provided with a counterclockwise watch. The pedal body that rotates in the direction and the plate that rotates in the clockwise direction are provided and fixed to the rotation shaft.The pedal body of the rear pedal is placed by wrapping it on the plate of the front pedal. Rotational motion is transmitted to the rotary shaft through the front pedal during clockwise rotation, and a rear pedal lap prevention stopper is provided on the valve stand to prevent the front pedal from rotating when the rear pedal is tilted forward. You can swing the boom left and right by stepping on one of the pedals. By lowering the pedal device toward one side, the foot space can be widened.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a main part of an embodiment of the present invention.

In the figure, 1 is a control valve, and the spool 2 and the rotary shaft 3 of the control valve 1 are yoke members 4
Are linked by.

The rotating shaft 3 is connected to pedals 6 and 7 through a boss 5 as described below.

That rear pedal 6 comprises more a cylindrical portion 6 ₂ having a pedal body ₆₁ and the hollow hole, the front pedal 7 to the rotating cylindrical portion 7 ₂ and clockwise with pedal body ₇₁ and the hollow hole which rotates counterclockwise become more and plate 7 ₃ rotating, the pedal body ₆₁ to thereby wrap the plate 7 ₃ pedals placed, the cylindrical portion 6 and _second holes and the pedal 7 of the pedal 6 through the hole behind of the rotary shaft 3 boss 5 It is inserted into the cylindrical portion 7 ₂ of the hole, the shaft bolt 8 through rotary cylinder 7 ₂ holes 7 ₄ of the front pedal 7 3
The pedal 7 is integrally connected to the rotary shaft 3 by the bolt 8 by being screwed into the tap hole 9 of the.

In this manner, a pair of front and rear stepping pedals, that is, the front pedal 7 and the rear pedal 6 form a pedal device.

When the pedal device is formed in this way, each pedal 6,7
Has pedal bodies 6 ₁ and 7 ₁ which are substantially symmetrical with respect to the cylindrical portions 6 ₂ and 7 ₂ respectively and have the same shape and area.

Reference numeral 10 indicates a valve stand that is erected on the floor 12.

Next, a case where the operator performs a swing operation will be described. In the case of a right swing, the front pedal 7 of the pedal device is
When depressing the pedal body ₇₁ is a front side forward (counterclockwise direction) of the rotating shaft 3 is right swing pulling the spool 2 because it is locked by a bolt 8.

In the case of a left swing, the rear pedal 6 of the pedal system is used.
By pressing the pedal body ₆₁ is a front, rear pedal 6 is left swing push the spool 2 is performed by pressing the plate 7 ₃ of the pedal 7.

By providing the lap prevention stopper 11 for the rear pedal 6 in the front side adjacent to the boss 5 of the valve stand 10, the second
As shown in FIG. 3A, the rear pedal 6 is attached to the rotary shaft 3
When the rear pedal 6 is rotated in the X direction to the front, the rear pedal 6 hits the stopper 11 attached to the bracket of the control valve 1 and the rear pedal 6 cannot be further depressed, and the so-called pedal is locked. , Also works as a stopper.

Therefore, in this case, the pedal can be used instead of the step.

Further, FIG. 2 (b) shows the pedal when the swing pedal is operated.

Therefore, in the embodiment of the present invention, when the swing pedal is not used, by tilting it forward, the foot space can be widened, and the pedal can be locked to use a step instead, which is very useful.

(Effect of the Invention) The present invention is configured as described above in detail, and the pedal device is composed of two split pedals, and the boom can be swung left and right by depressing one of the pedals. When it is not used as a swing pedal, it is possible to widen the space under the foot by tilting it forward, which makes it suitable for use in a compact power shovel on a narrow floor, and the habitability of the operator is significantly improved.

Also, by tilting the pedal forward and locking it, the pedal can be used as a step instead, so the operator can use it as a footrest, especially when working on sloping ground, which is very convenient to secure the posture and It is useful for improving safety.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an exploded perspective view of the main part, FIGS. 2 (a) and 2 (b) are operation explanatory views, and FIGS. 3 (a) and 3 (b). ) Shows a front view and an operation explanatory view of the conventional one. 1 …… Control valve 2 …… Spool 3 …… Rotary shaft 4 …… Yoke 6,7 …… Pedal 6 ₁ , 7 ₁ …… Pedal body 6 ₂ , 7 ₂ …… Cylindrical part 7 ₃ …… Plate 10 …… Valve stand 11 …… Stopper

Claims (1)

[Scope of utility model registration request] [Claim 1] with a pair of depression pedals 7,6 longitudinal pedal, the rotating cylindrical section 7 ₂ of the front pedal 7, rotating the rotary cylinder 7 ₂ to the pedal body ₇₁ and the clockwise rotating counterclockwise plate 7 ₃ provided fixed to the rotating shaft 3 to the pedal body ₆₁ of the rear pedal 6 by wrapped plate 7 ₃ of the front pedal 7 is placed, clockwise the rear pedal 6 is at the swing pedal operation When rotating, the rotary motion is transmitted to the rotary shaft 3 via the front pedal 7, and when the rear pedal 6 is tilted forward, the valve stand 10 is provided with a lap prevention stopper 11 for preventing the front pedal 7 from rotating. Swing pedal of a power shovel characterized by having a.