JPH045428Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement in the cabin structure of a tractor.

[Conventional technology]

Conventionally, as shown in Japanese Utility Model Application Publication No. 59-184269, a cage-shaped safety frame has been attached to the driving section of tractors to protect the driver from contact with other objects and accidental falls. Ta.

[The problem that the idea attempts to solve]

However, since the safety frame cannot protect the driver from harsh natural environments such as rain and strong sunlight, a cabin is provided to cover the driving part, as shown in Japanese Utility Model Application Publication No. 58-63170. This cabin was designed to protect the driver from the natural environment and falls.

However, since the above-mentioned cabin is usually constructed from pressed parts made of plate material, although it is satisfactory in terms of protecting the driver from rain and dew, It is predicted that the strength when force is applied is not good.

The purpose of the present invention is to use a cabin that can easily protect the driver from the natural environment while increasing its strength.

[Means to solve the problem]

For the above purpose, the present invention has been developed to reduce the front and back width of the rear support members of the cabin, which is supported by the fuselage by a pair of left and right front support members each having a fixing portion for the fuselage at the bottom, and a pair of left and right rear support members. The safety frame is set to be wider than the longitudinal width of the front support member, and an arch-shaped safety frame attached to the fuselage is installed along the inner surface of the left and right rear support members,
Further, the rear support member is supported by this safety frame, thereby forming a cabin of the tractor.

[Effect]

Generally, the driver's seat in the operating section is located near the rear end of the cabin, so an arch-shaped safety frame installed along the rear support member of the cabin protects the driver from contact with other objects. It provides effective protection against unexpected falls and strong external forces.

Since the safety frame is placed along the inner surface of the wide rear support member, the safety frame is difficult to see from outside the cabin, which is good for the appearance. Due to its location, it is also advantageous that even if it is configured to have a wide front and rear width, it will not easily obstruct the visibility during work travel.

Further, since the front support member has a narrower longitudinal width than the rear support member, a good forward visibility can be obtained, which is preferable for traveling during work.

[Effect of idea]

As a result, by focusing on the relative positional relationship between the cabin and the driver's seat, a safety frame that has an effective protective effect against external forces can be placed in combination with the cabin without obstructing the driver's view or deteriorating the appearance. We were able to provide a rationally configured cabin structure that is effective not only against the natural environment but also for safety.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 2, the agricultural tractor according to the present invention is equipped with an engine E at the front, and transmits its output to front wheels 2, 2 and rear wheels 3, 3 through a transmission 1. It is configured as a four-wheel drive type.

The operator seat 5 of the driving section is located between the left and right fenders 6, 6 of the left and right rear wheels 3, 3. 1st
As shown in the figure, the left and right fenders 6, 6 have their base ends connected to the rear axle case 7 of the left and right rear wheels 3, 3, respectively. Reference numeral 8 denotes a safety frame for the operator, and in this embodiment, it is constructed to support the control cabin 9, and is substantially arch-shaped when viewed from the front. Reference numerals 10 and 10 indicate safety frame columns erected at the left and right rear portions of the aircraft, which are located at both lower end protrusions 8' and 10 of the safety frame 8.
Frame attachment members 10' and 10' are provided at the upper end of the frame 8' to support the frame 8', respectively.

These safety frame struts 10, 10 are fixed to the rear axle case 7 by bolts at their base ends, extend upward, and terminate slightly before the upper surfaces of the left and right fenders 6, 6. The frame mounting members 10', 10' are positioned. The lower ends 8', 8' of the safety frames 8 are inserted into the upper surfaces of the fenders 6, 6, respectively, and attached to the frame mounting members 10', 10', as shown in FIG. Opening 6 for connecting bolt 21
a, 6a are formed, and the openings 6a, 6a are closed by fitable caps 6b, 6b when not in use. The left and right fenders 6, 6 have substantially concave grooves 6c, 6c in the longitudinal direction in a cross-sectional view for extending upwardly surrounding the safety frame columns 10, 10 on the side faces facing the wheels 3, 3. (See Figures 1 and 4). Said concave groove 6
Openings 6d, 6 are located approximately midway in the hardness direction of c, 6c.
d is provided, and through these openings 6d, 6d,
A reinforcing frame stay 11 is provided that connects the safety frame columns 10, 10, and this frame stay 11 is located just below the rear of the seat 5, so that the safety frame columns 10, 10 are connected to each other in a rear view. This constitutes a roughly H-shaped frame.

A cover plate 12 is welded to approximately the middle part of the frame stay 11 in the width direction of the vehicle body, and the lower end of this plate 12 is bolted to the upper part of the case of the transmission 1 located below. A stay 11 and left and right safety frame columns 10, 10 are attached to the transmission 1 and the axle case 7 with strong three-point support. The control cabin 9 is bolted to the safety frame 8, as shown in FIG. 6, with flanges 9b attached to left and right rear frame portions 9a (corresponding to rear support members) of the safety frame 8. 9
Denoted at e and 9e are decorative covers fitted to the left and right rear frame portions 9a and 9a. The front side frame portions (corresponding to front support members) 9f, 9f of the control cabin 9 are as follows:
Its width in the front and rear direction is narrower than that of the rear frame portions 9a, 9a, and its lower end is approximately gate-shaped when viewed from the front, and engagement pins 13, 13 are provided on its upper side. It is configured to be positioned and fitted into engagement holes 15, 15 provided on the upper surface of an arch-shaped frame 14 provided at the rear of the engine compartment. And the front frame parts 9f, 9f
Engagement pins (corresponding to fastening parts) 16, 16 are provided protruding from the lower end leg parts 9c, 9c, respectively.
As shown in the figure, they are inserted into fitting holes 18, 18 formed at the upper ends of the foot covers 17, 17, and are prevented from coming out by clips 19, 19, respectively.

The clips 19, 19 are attached to the foot cover 1.
Openings 17a, 17a formed in the side walls of 7, 17
The opening 17
a, 17a are closed by fitting caps 20.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the cabin structure of a tractor according to the present invention, in which Fig. 1 is a partially cutaway side view of the main parts of the cabin, Fig. 2 is an exploded perspective view showing the mounting structure of the cabin, and Fig. 3 is the fuselage. Figure 4 is a plan view of the rear wheel fender, Figure 5 is an enlarged cross-sectional front view of the safety frame attachment part, Figure 6 is a cross-sectional view showing the internal structure of the rear support member of the cabin, Figure 7 is a partially cutaway front view showing the mounting structure on the front side of the cabin. 8...Safety frame, 9...Cabin, 9a...
...Rear support member, 9f...Front support member, 16...Fixing portion.

Claims (1)

[Scope of utility model registration request] A pair of left and right front support members 9f each having a fixing portion 16 for the fuselage at the bottom, and a pair of left and right rear support members 9.
The longitudinal width of the rear support member 9a of the cabin 9 supported by the fuselage is set to be wider than the longitudinal width of the front support member 9f, and the cabin 9 is attached to the fuselage and has an arch shape when viewed in the longitudinal direction. A tractor cabin structure in which a safety frame 8 is provided along the inner surfaces of the left and right rear support members 9a, and the safety frame 8 supports the rear support members 9a.