JPS6336994B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a cabin device surrounding a tractor operator.

(b) Prior Art Conventionally, a technology has been known in which a cabin device is attached to protect the operator from dust and the cabin device can be tilted and rotated for inspection and repair.

For example, Japanese Patent Application Laid-open No. 136661/1983.

(c) Problems to be solved by the invention However, the conventional cabin device had a structure in which the agricultural tractor was left as is and the cabin device was attached to it, so there was no floor plate, which was the bottom plate of the cabin device. All that was required was a bottomless box-shaped cabin mounted and fixed on top of the transmission case or rear axle case.

Therefore, the lower part was not sufficiently sealed, making it difficult to achieve cooling and heating effects.

The purpose of the present invention is to solve these problems by integrating the left and right fenders of the cabin device, the floor plate, which is the bottom plate, and the dart board part, forming a box shape with a bottom, and completely sealing it. This increases the cooling and heating effects.

In order to improve the airtightness of the cabin device by making it a box with a bottom, the conventional method of pivoting the base of the lever on the tractor side and inserting its end into the cabin would have made it difficult to adjust the rotation angle. Since the long hole is opened in the floor plate which is the bottom plate of the cabin, a lever bracket is fixed to the cabin device side, a lever pivot shaft is provided on this lever bracket, and the lever is rotated around this pivot shaft. The lever is constructed so as to be able to rotate, and the part of the lever that enters the cabin device is constructed so that the lever enters the cabin device through a pivot portion that is highly sealed.

(d) Means for Solving the Problems The objects of the present invention are as described above, and the configuration for achieving the objects will now be explained.

In a configuration in which the cabin device can be tilted and rotated about the pivot shaft 36 together with the left and right fenders 2, floor plate 33, and dart board 11, a lever bracket 15 is provided inwardly protruding from the fender 2, and the fender 2 and the lever bracket 15, the floor plate 33 is supported, and the lever pivoted on the lever bracket 15 can also be tilted integrally, and when the cabin device is tilted, the lever is rotated to the lever bracket 15. It is configured so that it can be attached and detached at a link section that is connected to the outside of the pivot shaft.

(E) Embodiment The object and structure of the present invention are as described above. Next, the structure of the embodiment shown in the attached drawings will be explained.

FIG. 1 is an overall side view of the cabin device, and FIG. 2 is a rear view of the cabin.

Main frame 1L, 1R and rear vertical frame 38L
(not shown)・38R is rear axle housing 8
It protrudes from above to the rear end of the ceiling frame 22.

The ceiling frame is a square frame with several reinforcing bars on the left and right. Fenders 2L and 2R are protruded forward from the main frames 1L and 1R, and the cabin frame 12 is attached from the top surface of the fenders 2L and 2R.
L, 12R are connected to the ceiling framework 22 above.

The front part of the cabin is composed of a front frame 28 and a dash board 11. Datsushi board 1
1 is attached with a steering handle 10, and is also attached with left and right brake pedals, a clutch pedal 39, etc., and the entire cabin can be tilted and rotated with these attached.

In addition, the dart board 11 includes a handle tilt lever 40, a high/low speed change lever 41,
PTO gear shift lever 42, accelerator foot pedal 4
3. An accelerator lever 44 and the like are also attached, and the whole unit tilts and rotates together with the cabin device.

A door 9 opens and closes a side surface surrounded by the ceiling frame 22, the cabin frame 12, the front part of the fender 2, and the front frame 28. 29 is the door hinge.

An opening/closing window 6 having a curved surface in a right angle direction is provided at the corner of the cabin over the top and rear surfaces of the fenders 2L and 2R. Hinge 30, 3 of opening/closing window 6
0 is provided on the cabin frame 12. 1
8L, 18R are cabin frames 12L, 12R
This is a back mirror that protrudes further to the side.

The rear surface of the cabin is provided with a rear upper window 5 and a rear lower window 4, and the upper and lower windows 4 and 5 are constructed as windows that can be opened left and right.

The front part of the cabin has vertical anti-vibration rubber 25,2
5 is interposed, and the cabin is placed on top of it. Both left and right sides have the same shape.

Reference numeral 24 denotes a cabin mounting table, which is fixed to the side wall of the clutch housing 32 by a flange 23.

Reference numeral 26 denotes an auxiliary step, which is fixed to the floor plate 33 that is integrated with the cabin, so that when the entire cabin is rotated, the auxiliary step also rises.

As seen in the left half of Figure 2, move the lever bracket 15 inward from the fenders 2L and 2R.
is box-shaped and protrudes. The rotation shaft of the operating lever is pivoted from the transmission case 31 or rear axle case 7 side to this lever bracket,
The lever is projected toward the lever guide plate 14. The lever guide plate 14 is fixed to the floor plate 33.

Floor plate 33 is Fender 2L, 2R
A sheet 13 is placed in a concave portion in the center of the frame.

Electric circuit wiring 19 is arranged on the back side of the fender 3L, and a fixing plate 20 prevents the wiring from hanging down. Also, wiring 19 from Fender 2L
enters the cabin frame 12, and a switch board 17 is provided inside the cabin frame 12,
Electric circuit switches are placed here.

Four cold water and two hot water pipings 16 are also arranged on the back side of the Fender 3R. These pipings 16 also pass through the right side cabin frame 12R and are connected to a cooler fin device and a heater fin device provided on the ceiling of the cabin.

The main parts of the cabin tilt device are the support body 3a,
3b, and the pivot portions at the lower ends of the main frames 1L and 1R.

Both supports 3a and 3b are configured in an L shape,
They are placed on top of each other on the rear axle housing 8 and fixed with long bolts. The rear axle housing 8 projects laterally from the rear axle case 7.

A pivot shaft 36 is installed between the supports 3a, 3b, and vibration-proof rubbers 34, 34 are interposed between the pivot shaft 36 and the main frame 1. The cabin, the step, the floor panel 33, etc. are supported by four pairs of anti-vibration rubber 25, 25 at the front end of the cabin and anti-vibration rubber 36, 36 at the pivot portion, and the clutch housing 32, transmission case 31, rear It does not contact the axle case 7, rear axle housing, etc.

Further, as shown in FIG. 1, the rear tilt lock 27 protrudes from the support body 3a, and overlaps with the tilt lock 28 which also protrudes from the main frame 1 in the tilted state.In this state, the lock pin is inserted to set the tilt lock state. It is configured to maintain the following. 21 is a reflecting mirror.

Figure 3 shows the floor plate 33 of the cabin equipment.
4 is a plan view of the lever guide plate 14 on the right side of the floor plate, FIG. 5 is a perspective view of the opening/closing window 6, FIG. 6 is a side perspective view of the levers near the lever guide plate, and FIG. 7 is a plan view of the lever guide plate 14 on the right side of the floor plate. is the left lever guide plate 14L
FIG. 8 is a plan sectional view showing the positions of the levers on the right lever guide plate 14R.

As shown in FIG. 3, the floor plate 33 closes the bottom surface of the cabin with a single plate, and the left and right front portions serve as left and right steps 33a and 33b. The center between the fenders 2L and 2R is recessed and the seat 13 is disposed there. Lever guide plates 14 are disposed protruding from the left and right sides of the seat so that the levers are located at the height of the armrests.

The pivots at the base of the levers are pivoted to lever brackets 15L and 15R, and are guided halfway to lever guide plates 14L and 14R, with the upper ends protruding upward from the sides of the seat armrests.
The lever brackets 15L and 15R are provided to protrude inward from the left and right fenders 2L and 2R, respectively.

To explain the guide groove of the lever guide plate, there is a 14g ground on the left lever guide plate 14L.
Independent PTO lever guide plate 14h
A PTO lever guide, 14i front wheel drive clutch lever guide, 14k brake lever guide, etc. are provided.

The lever guide plate on the left side includes a main shift lever guide 14a, an auxiliary shift lever guide 14b, a position control lever guide 14c, a depth/draft control lever guide 14d, and externally mounted work machine hydraulic operation lever guides 14e and 14f.
etc. are provided.

As shown in FIGS. 6, 7, and 8, the operating levers are arranged.

As shown in Figure 7, the left lever bracket 1
5L, the parking brake lever 46 is attached to the pivot shaft 46.
The front wheel drive clutch lever 45 is pivoted at the pivot shaft 45a, and the independent
A PPTO lever 47 is pivotally supported on a pivot shaft 47a.

As shown in Figure 8, the right lever bracket 1
5R, the differential pedal 29 is connected to the pivot shaft 50a.
, the depth/draft control lever 49 is attached to the pivot shaft 49a, and the externally mounted work machine hydraulic lever 5 is attached to the pivot shaft 49a.
1 and 52 are pivotally supported by pivot shafts 51a and 52. The main shift lever and the auxiliary shift lever protrude directly toward the lever guide and are sealed with a boot.

Furthermore, since the levers pivotally supported by these lever brackets 15 are lifted together with the pivot shaft portion when the cabin device is tilted, the levers are removed at the link portions on the outside of the pivot shaft.

(F) Effects of the Invention Since the present invention is configured as described above, it has the following effects.

First, when trouble occurs in the transmission case or the rear axle case, by tilting the cabin device, it is possible to open the gap between the cabin device and the transmission case and perform repair and inspection.

In addition, since there is no need to remove the entire cabin device during repair and inspection, the wiring and piping connecting the cabin device and the tractor body can be left in place if they are allowed to flex near the rotation axis. ,
Repair inspections can be carried out.

Second, a lever bracket is provided inwardly protruding from the fender, the floor plate is supported by the fender and the lever bracket, and the levers pivoted to this can also be tilted and rotated as a unit.
Unlike conventional methods, there is no need to drill a long hole in the bottom plate of the cabin for insertion and rotation of the lever, or use the tractor's transmission case or steps as the bottom of the cabin, and it can be closed with a well-sealed floor plate. It was done.

This improves the airtightness of the cabin device, improving the cooling and heating effects, and when tilting the cabin during repair and inspection, if you remove the link bracket connected to the lever device, you can tilt and rotate the levers together with the cabin device. Something became possible.

[Brief explanation of the drawing]

1 is an overall side view of the cabin device, FIG. 2 is a rear view of the cabin, FIG. 3 is a plan view of the floor plate 33 of the cabin device, and FIG. 4 is a plan view of the lever guide plate 14 on the right side of the floor plate. Fifth
The figure is a perspective view of the opening/closing window 6, Figure 6 is a side perspective view of levers near the lever guide plate, Figure 7 is a plan sectional view showing the position of the levers on the left lever guide plate 14L, and Figure 8 is the right side. FIG. 7 is a plan sectional view showing the positions of levers on the lever guide plate 14R. 1... Main frame, 2L, 2R... Fender, 11... Dashboard, 14... Lever guide plate, 15L, 15R... Lever bracket, 33... Floor plate.

Claims (1)

[Claims] 1. Install the cabin device together with the left and right fenders 2, floor plate 33, and dash board 11.
In a configuration that allows tilting and rotation around a pivot shaft 36, a lever bracket 15 is provided to protrude inward from the fender 2, the floor plate 33 is supported by the fender 2 and the lever bracket 15, and the lever bracket 15 The lever pivoted on the lever bracket 15 can also be integrally tilted and rotated, and the lever is configured to be attached and detached at a link portion connected to the lever bracket 15 on the outside of the pivot shaft when the cabin device is tilted. A cabin device for an agricultural tractor characterized by: