JP2999939B2 - Backhoe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small backhoe in which a driver's seat is arranged above an engine hood and a canopy is provided to cover above the driver's seat, and more particularly to an improvement in a canopy support structure.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned backhoe, a column of a canopy is formed in a straight shape and is arranged behind a driver's seat so that a lateral view of a rider is not impaired by the column. See Japanese Utility Model Laid-Open No. 2-85609].

[0003]

However, since the lateral sides of the driver's seat are largely open, the driver tends to feel uneasy when the aircraft rolls, and this increases the driver's sense of security. There was room for improvement. SUMMARY OF THE INVENTION An object of the present invention is to improve a column of a canopy so that a rider can have a sense of security when the aircraft rolls, while keeping the lateral view of the rider from being impaired by the column. .

[0004]

The present invention is characterized in that a driving seat is arranged above an engine hood and a canopy is provided to cover above the driving seat. An upper portion is formed in a bent shape positioned at the rear of the fuselage, and a base end of the support is disposed on a side of the driver's seat.
From the front fixed bonnet part and the base end of the strut
Also formed separately with the rear opening and closing bonnet located at the rear
And the rear opening / closing hood portion is connected to the front fixing bonnet.
Lifting swing open operation freely around the horizontal fulcrum on the net part side
Below the upper part of the strut
It has been installed in a state where it gets into one side .

[0005]

According to the above feature, since the lower part of the canopy support is located beside the driver's seat, the lower part of the support can be prevented from falling down when the aircraft rolls, so that the rider can have a sense of security. it can. And since the upper part is located behind the lower part of the support post behind the fuselage, the upper part of the support post can be arranged at a position which does not obstruct the lateral view of the boarding driver, and a good driving view can be secured. Moreover, the driver ’s seat
Open the rear part below the upper part of the side canopy column.
Make sure that the closed hood
The pillar does not interfere with the upward swinging release of the net part
So that the rear opening and closing hood part rises
The swing angle can be increased, and the rear opening and closing bonnet as a whole
Easy maintenance of the prime mover
You.

[0006]

According to the present invention, the side of the onboard driver is
The aircraft will not lose visibility due to the struts
The pillars provide a sense of security for the driver when rolling.
That the driving comfort is excellent
Backhoe, which is also advantageous for maintenance of driving parts
Can now be provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a turntable 3 is mounted on a traveling vehicle body having a pair of right and left crawler-type traveling devices 1 and a vertically movable dozer 2 so as to be able to drive and rotate around a vertical axis. A swing bracket 4 is attached to the front end of the base 3 by a swing cylinder Cs so as to be able to swing left and right, and a boom 5a driven up and down by a boom cylinder C1, an arm 5b driven to extend and extend by an arm cylinder C2, and a bucket cylinder C3. A backhoe device 5 is connected to the swing bracket 4 by sequentially connecting the buckets 5c which are moved and rotated in reverse. The driver's seat 7 is disposed above an engine hood 6 disposed at the rear of the swivel 3. A canopy 8 is provided to cover the upper part of the backhoe to form a small backhoe with a dozer.

The crawler type traveling device 1 is connected to a hydraulic cylinder C4.
The left and right ends 2a of the dozer 2 can be extended laterally by hydraulic cylinders C5, respectively. The dozer ends 2a on the same side on the left and right sides are moved in and out in synchronization with the change in the interval of the crawler traveling device 1.

As shown in FIGS. 2 and 3, the engine 10
The radiator cooling fan 11 is disposed in the engine bonnet 6 in a horizontal state and is disposed on the lateral upper portion of the engine 10 and is formed in the center of the upper surface of the engine bonnet 6 in the left-right direction. Recess 12
The driver seat 7 is inserted into the engine bonnet 6
Upward convex portions 1 located on both left and right sides of concave portion 12 in FIG.
The upper portion of the radiator 14 is inserted into the inner space of the right convex portion 13a of the 3a and 13b, and the upper portion of the battery 15 which is one of the engine accessories is inserted into the inner space of the left convex portion 13b. is there.

As shown in FIGS. 4 and 5, the engine bonnet 6 is fixed to a front fixed bonnet portion 6a and a driver seat 7
Rear opening and closing bonnet part 6 including a part located below
and a rear opening / closing bonnet portion 6b is attached via a hinge 16 so as to be freely swingable up and down around a horizontal fulcrum P. An inspection cover 17 for covering the hydraulic oil tank and the fuel tank provided in front of the right side portion of the front fixed bonnet portion 6a is mounted so as to be able to swing up and down around the horizontal fulcrum Q, and the rear opening and closing bonnet portion 6a.
An intake port 18 for taking in cooling air and an exhaust port 19 for discharging cooling exhaust air are formed on the left and right side surfaces of b.

As shown in FIGS. 4 and 5, a seat mounting bracket 21 is mounted on a gate-shaped fixed support member 20 erected on the swivel 3 in a state where the seat mounting bracket 21 is fastened together with the front fixing bonnet portion 6a. The driver's seat 7 is tilted forward around the fulcrum 22 to be mounted on the pivot 21 so as to be swingable.
A rubber seat 24 attached to the bottom surface of the driver's seat 7 is placed on the rear end side of the front fixed bonnet portion 6a to support the driver's seat 7 in a sitting posture, and the driver's seat in a forward leaning posture 7 is configured to contact the operation lever 25.

The rear opening / closing hood portion 6b is connected to the hinge 16
, So that the driver's seat 7 is tilted forward so as not to be obstructed, and the rear opening / closing hood portion 6b is largely opened upward. That is, the driver's seat 7 is attached to the front fixed bonnet portion 6a side, the rear opening / closing bonnet portion 6b is formed with relatively low strength and light weight, and the operating force required for opening / closing the rear opening / closing bonnet portion 6b can be reduced. is there. Then, the rear opening / closing hood portion 6b is enlarged by setting a bonnet dividing line so that the rear opening / closing hood portion 6b includes a portion located below the driver's seat 7. The portion 6b is configured to be largely opened so that the driving portion can be easily maintained and inspected. Although not shown, the rear opening / closing bonnet portion 6b, which is swingably opened upward, is maintained in the open position by a support member such as a waist broken link or a gas damper.

Further, the base end portions 9c of the left and right columns 9 of the canopy 8 are arranged on the side of the driver's seat 7, and are firmly connected to a fixed support member 20 for supporting the front fixed bonnet portion 6a. The strut 9 is formed in a bent shape in which the upper portion 9b is located rearward of the fuselage with respect to the lower portion 9a, and the base end portion 9c of the strut 9 is secured to the rider by the fall prevention function of the strut lower portion 9a when the fuselage rolls. It is possible to secure a good driving view by arranging the column upper portion 9b at a position that does not obstruct the side view of the boarding driver,
Also, the rear opening / closing bonnet portion 6b in the upward swing open posture
Are inserted under the upper portion 9 b of the support 9. In addition, the pillar 9 can be used as a handle when getting on and off.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a backhoe.

FIG. 2 is an overall plan view of the backhoe.

FIG. 3 is a longitudinal rear view of the driving unit.

FIG. 4 is a partially cutaway side view of the swivel base.

FIG. 5 is a partially cutaway side view of the turntable with the engine hood open.

[Explanation of symbols]

 Reference Signs List 6 engine bonnet 6a front fixed bonnet part 6b rear opening and closing bonnet part 7 driver's seat 8 canopy 9 support 9a lower part of support 9b upper part of support 9c base end of support P Lateral fulcrum

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 56-69577 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02F 9/00 E02F 9/16 B60R 21 / 11

Claims (1)

(57) [Claims] 1. A backhoe having a driver seat (7) disposed above an engine hood (6) and a canopy (8) covering an upper part of the driver seat (7), wherein the backhoe is provided with a canopy (8). The strut (9) is formed in a bent shape such that the upper portion (9b) is located rearward of the fuselage from the lower portion (9a), and the base end (9c) of the strut (9) is located beside the driver's seat (7). The engine bonnet (6)
And a front fixing bonnet portion (6a)
Rear opening / closing located behind the base end (9c) of (9)
Divided into a bonnet part (6b) and the rear opening and closing
The bonnet part (6b) is attached to the front fixed bonnet part.
Ascending swing release operation around the horizontal fulcrum (P) on the minute (6a) side
The support (9) is freely movable and in the upwardly swinging open position.
A backhoe mounted so as to enter below the upper part (9b) .