JPS5820699Y2 - Operation structure of work vehicle - Google Patents

Description

[Detailed description of the invention] This invention is an operating structure for a work vehicle in which a foot pedal is connected to a swinging member linked to a switching valve and moves in an arc as the swinging member swings, and more specifically, an improvement of the pedal. Regarding.

As shown in FIG. 6, the conventional pedal described above is formed of a single plate, and therefore the pedal 1 can be easily depressed by placing the toe on the rear part 1b of the pedal. When performing a stepping operation, place the entire foot on pedal 1 and simultaneously perform a forward rocking motion of the shin centered around the knee and a downward rocking motion of the toe centered around the ankle. Pedal operation has become difficult because it requires complicated movements.

The purpose of the present invention is to make it easier to operate the pedal in either the forward or backward direction by simply improving the pedal. It is characterized by the fact that the pedal parts, which are operated by pressing backward, are arranged in different positions in the lateral direction.

In other words, a pedal part for pressing backwards,
Since the position of the pedal part for forward pedal operation is different from each other in the lateral direction, when operating the pedal either forward or backward, only the toe rests on the pedal part and the toe swings. Now you can easily operate the pedals.

In addition, it is effective for practical use because it is sufficient to simply modify the positions of the two pedals.

Hereinafter, embodiments of the present invention will be described based on illustrative drawings.

A swivel base 3 capable of full rotation is provided on the crawler type traveling machine base 2, and an engine section 4 and a control section 5 are provided on the swivel base,
A working vehicle is constructed in which a backhoe device 6 is attached to a rotating base 3, and a dozer device 7 is attached to a machine base 2, so that excavation work and soil removal work can be performed alternatively.

The backhoe device 6 includes a fluid pressure cylinder 8
The arm bracket 9, which can change its orientation in the lateral direction, is attached to the swivel base 3, and the boom portion 10, arm portion 11. A working arm formed by pivotally connecting the packets 12 in that order is pivotally connected to the bracket 9, thereby fixing the rotation angle of the swivel base 3 with respect to the machine base 2 and the lateral direction of the working arm with respect to the swivel base 3. By setting the fixed swing angle to a predetermined value, ditch digging can be performed.

A lever set operating tool 13 for operating the bracket cylinder 8 is provided in the operating section 5, and the operating system of this operating tool 13 is a telescopic operating system for the bracket cylinder 8 and a turning operating system for the swivel base 3. A device 14 for selectively and reversibly switching is provided in the control section 5, whereby the switching device 1
4, the swivel base 3 is moved using one operating tool 13.
The rotation operation of the backhoe device 6 and the operation of changing the direction of the backhoe device 6 in the lateral direction with respect to the rotation table 3 can be performed alternatively.

The operation system switching device 14 is structured as shown in FIGS. 2 and 3.

That is, both circuits are connected from a control valve (not shown) operated by the operating tool 13 to a fluid pressure circuit (not shown) connected to the bracket cylinder 8 and the swivel table driving fluid pressure motor (not shown). A valve 15 for selectively opening and closing is provided, and a member 16 is provided that is swingable in the longitudinal direction of the machine base 2 around the horizontal axis 4, and the valve 15 can be switched by swinging the member 16. In this way, the swinging member 16 and the valve 15 are interlocked and connected.

The free end side of the swinging section rod 16, which is opposite to the interlocking side to the valve 15 with respect to its swinging axis P, projects upwardly from the floor plate 17 of the control section 5, and a swinging section is attached to this projecting end. A foot pedal 1 that moves in an arc in the longitudinal direction of the machine about the horizontal axis P as the member 16 swings is connected.

A pedal portion 1a of the foot pedal 1 is located toward the front of the aircraft body from the horizontal axis P and a pedal portion 1b is located toward the front of the aircraft to operate the pedal 1, and a pedal portion 1b is located toward the rear of the aircraft from the horizontal axis P and is operated by pressing the pedal 1 backward. In addition to providing both pedal portions 1a
, lb are arranged so as to be different from each other in the direction along the horizontal axis P.

That is, if the operating system of the operating tool 13 is to be the operating system of the swivel base 3, as shown in FIG. When operating the switching valve 15 to open the fluid pressure circuit and switching the operating system of the operating tool 13 to the operating system of the bracket cylinder 8, as shown in FIG. Step on the portion 1a with your toe and operate the switching valve 15 to open the fluid pressure circuit between the control valve and the bracket cylinder 8.

The pedal 1 can be modified in various ways as shown in FIG. Good.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the operating lane for a working vehicle according to the present invention, in which FIG. 1 is an overall side view of the working vehicle, FIG. 2 is a partially cutaway side view showing the main parts, and FIG. Plan view, Figure 4 (A) 9 is an explanatory diagram of the operation procedure, Figure 5 (A) 9 and C is a plan view showing another aspect of the pedal, and Figure 6 (A) 9 is an explanation showing the conventional structure and its operation procedure. It is a diagram. 1...Pedal, la, lb...Pedal part, 3...Swivel base, 6...Backhoe device, 13...Operation tool , 15... valve, 16... rocking member.

Claims (1)

[Claims for Utility Model Registration] ■ An operating structure for a working vehicle in which a foot pedal 1 is connected to a swinging member 16 interlocked with a switching valve 15 so as to move in an arc as the swinging member 16 swings, the pedal 1. A working vehicle operating structure characterized in that a pedal part 1a for operating a pedal by pressing forward and a pedal part 1b for operating by pressing backward are arranged at different positions in the lateral direction. (2) The switching valve 15 is configured to selectively operate the swivel base and change the direction of the backhoe device 6 in the lateral direction with respect to the swivel base 3 using one operating tool 13. The structure described in item (2) of the claims for utility model registration, which is characterized by: