JPH0643255Y2 - Pedal device for running construction machinery - Google Patents

Description

TECHNICAL FIELD The present invention relates to a traveling pedal device for a construction machine.

2. Description of the Related Art FIG. 5 is a perspective view showing the inside of a cab for a hydraulic excavator. In the figure, 1 is a floor board of a driver's cab, 2 is a driver's seat, 3
Are a pair of running tread members, and 4 and 5 are left and right footrests. FIG. 6 is a side view showing a conventional pedal device 6 for traveling. In the figure, 7 is a support bracket provided on the floor plate 1, 8 is a pin, and 9 is a traveling lever for manual operation integrally attached to the tread member 3.

Next, the structure of the conventional pedal device 6 for running will be described with reference to FIGS. The pair of tread members 3 is the floor plate 1.
The support bracket 7 provided on the above is provided so as to be rotatable in the front-rear direction via a pin 8. Then, when the driver puts his / her foot on the tread member 3 and operates the front side a of the tread member 3 with the foot toe portion, the hydraulic excavator advances. When the rear side of the tread member 3 is stepped on by the heel portion, the hydraulic excavator moves backward. Further, instead of stepping on the tread member 3, the traveling lever 9 can be manually operated. It should be noted that the footrests 4 and 5 provided on the left and right sides of the pair of tread members 3 are installed by the driver in the driver's seat 2
It is a platform on which the user can rest his / her body to support the vibration and vibration of the hydraulic excavator when seated on the floor and performing work operation.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the conventional pedal device for traveling, when the hydraulic shovel is moved forward or backward, the driver puts his foot on the tread member, and the front side of the tread member at the foot toe part, The rear side of the tread member was operated by the foot and heel.
However, due to ergonomics, it is difficult for the driver to perform a stepping operation on the heel of the foot, such as a fine operation. So the driver
The foot placed on the tread member was shifted rearward to change the foot. Therefore, the operability of the hydraulic excavator in the reverse direction is poor, and the tread member is narrow in the front-rear direction and in the front-rear direction, so the foot of the driver's seat is narrow.

An object of the present invention is to solve the above problems and to provide a traveling pedal device that allows a driver to place a foot heel on a footrest and perform forward and backward operations of a construction machine with a foot and toe. .

Means for solving the problems a. Form a pair of tread members on the forward stepping pedal, and b. Footrests are erected on the floor plates at the left and right side positions of the pair of pedals, respectively, and a counter lever is provided on each of the footrests so as to be rotatable in the left and right directions. It is set so that it can come into contact with the rear surface of the front side, and the reverse pedal is fixedly attached to the other end of the counter lever. When the foot heel of the driver is placed on the footrest, either the forward pedal or the backward pedal can be depressed.

Action a. The foot heel of the driver can be placed on the footrest, the foot toe part can be rotated to the left or right with the foot heel part as an axis, and the forward or reverse pedal can be depressed by the foot toe part.

B. The function when the forward pedal is depressed is the same as when the front side of the conventional tread member is depressed. The forward stepping pedal of this invention does not have a rearward side portion of the prior art tread member.

C. When the backward stepping pedal is depressed, the counter lever is rotated in the left-right direction to rotate the forward stepping pedal toward the rear side. As a result, the construction machine moves backward. Since the backward stepping operation is performed by the toe of the foot, the fine operation is easy and the driver's foot fatigue is reduced.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a partially cutaway front view of the traveling pedal device 10 according to the present invention as seen from the driver's seat side. In the figure, reference numeral 11 denotes a pair of forward stepping pedals in the padal device 10. The pedal device 10 is configured symmetrically with the pair of forward stepping-on pedals 11 as the center, and therefore the description will be given with reference to the left part. 12 is a floor plate of the cab, 13 is a support bracket, 14 is a pin, 15 is a manually operated traveling lever integrally attached to the forward stepping pedal 11, 16 is a footrest, 17 is a counter lever, 18 is a fulcrum pin, Reference numeral 19 is a reverse pedal. FIG. 2 is a side view as seen from AA in FIG. FIG. 3 is a view showing a foot stepping operation position as seen from BB in FIG. FIG. 4 is an embodiment diagram when the backward stepping pedal 19 is depressed.

Next, the structure of the traveling pedal device 10 according to the present invention will be described with reference to FIGS. A pair of tread members are formed on the forward stepping pedals 11, footrests 16 are respectively erected on the floor plate 12 at the left and right side positions of the pair of pedals 11, and counters rotatably in the left and right directions on the respective footrests 16. A lever 17 is provided, and one tip end c of the counter lever is set so as to be able to abut on the front side rear surface of the forward pedal 11 and the reverse pedal 19 is fixed to the other tip d of the counter lever 17. I installed it. Further, when the foot of the driver's foot is placed on the footrest 16, either the forward depression pedal 11 or the backward depression pedal 19 can be depressed.

Next, the function and function of the traveling pedal device 10 according to the present invention will be described. Place the driver's foot heel e on the footrest 16 and rotate the foot toe to the left or right with the foot heel as the axis, and step on the forward or reverse pedals 11, 19 at the foot toe. It can be operated. The function when the forward depression pedal 11 is depressed is the same as when the front side a of the conventional tread member 3 is depressed. Therefore, the forward stepping pedal 11 of the present invention does not have the rear side portion of the conventional tread member 3. As a result, the length 1 of the forward stepping pedal 11 in the front-rear direction becomes shorter than the length L of the conventional tread member 3, so that the driver's foot space can be slightly widened. Next, pedal 19 for reverse pedaling
When is depressed, the counter lever 17 rotates in the left-right direction about the fulcrum pin 18. One tip end c of the counter lever 17 pushes upward from the rear surface of the forward-depressing pedal 11. The forward stepping pedal 11 rotates rearwardly about the pin 14, so that the construction machine moves backward. The traveling lever 15 at that time is also tilted rearward in conjunction with the pedal 11. As described above, since the backward stepping operation is performed by the toes of the foot, the fine operation is easy and the driver's foot fatigue is reduced.

In the prior art traveling pedal device, when the hydraulic excavator is moved forward or backward, the driver puts his foot on the tread member so that the front side of the tread member is at the toe of the foot and the rear part of the tread member. He was stepping on each side with his heels.
However, due to ergonomics, it is difficult for the driver to perform a stepping operation on the heel of the foot, such as a fine operation. So the driver
The foot placed on the tread member was shifted rearward to change the foot. Therefore, the operability of the hydraulic excavator in the reverse direction is poor, and the tread member is narrow in the front-rear direction and in the front-rear direction, so the foot of the driver's seat is narrow.

However, in the traveling pedal device according to the present invention, the pair of tread members are formed on the forward stepping pedals, and the footrests are erected at the left and right side positions of the pair of forward stepping pedals, and the footrests are arranged in the left-right direction. A counter lever is rotatably mounted on the counter lever, one end of the counter lever is set to be able to abut on the front rear surface of the forward pedal, and the reverse pedal is fixed to the other distal end of the counter lever. I installed it. As a result, the driver can place the heel portion of the foot on the footrest and perform forward and backward stepping operations at the toe portion of the foot. As a result, there is no need to step on the heel of the foot, making it easier to perform fine reverse operations. In addition, since the length of the forward-depressing pedal in the front-rear direction is short, the driver's seat can have a little wide margin. Further, when the forward or backward operation is performed, the manual traveling lever, which is integrated with the pedal, interlocks to perform forward and backward tilting, so that the traveling lever operation is as convenient as the prior art.

Therefore, in the construction machine equipped with the pedal device for traveling according to the present invention, the driver can perform forward and backward stepping operations using the toes of the foot. Improves backward operability of the machine and reduces driver fatigue.

[Brief description of drawings]

FIG. 1 is a front view of the traveling pedal device according to the present invention seen from the driver's seat side, FIG. 2 is a side view seen from AA of FIG. 1, and FIG. 3 is BB of FIG. FIG. 4 is a diagram showing a foot pushing operation position as seen from a further direction, FIG. 4 is an embodiment diagram when a backward stepping pedal is stepped on, FIG. 5 is a perspective view showing the inside of a hydraulic excavator cab, and FIG. It is a side view showing a conventional pedal device for traveling. 1,12 …… Floor plate 2 …… Driver's seat 3 …… Tread member 4,5,16 …… Foot rest 6,10 …… Pedal device for traveling 7,13 …… Support bracket 8,14 …… Pin 9,15… … Traveling lever 11 …… Pedal for forward depression 17 …… Counter lever 19 …… Pedal for backward depression

Claims (1)

[Scope of utility model registration request] 1. A travel pedal device comprising a pair of tread members, which are provided in a support bracket provided on a floor plate of a driver's cab so as to be rotatable in the front-rear direction via pins, and which come into contact with a driver's foot. In the above, the pair of tread members are formed into forward stepping pedals, footrests are respectively erected on the floor plates at the left and right lateral positions of the pair of pedals, and the counter levers are rotatably rotatable in the left and right directions, respectively. Provided,
One end of the counter lever is set so as to be able to come into contact with the front side rear surface of the forward pedal, and the reverse pedal is fixedly attached to the other distal end of the counter lever, and the driver is attached to the footrest. A traveling pedal device for a construction machine, characterized in that it is configured such that when the foot heel is placed, either the forward pedal or the backward pedal can be depressed.