JP2571756Y2 - Backhoe canopy structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a canopy structure in a backhoe for excavating a ground.

[0002]

2. Description of the Related Art Conventionally, in a small turning type backhoe,
In some cases, a canopy is provided so as to cover the steering section and the driver's seat, and the canopy is fixedly installed by a canopy support standing upright on a swivel or hood.

In recent years, when the canopy is of a retractable type, for example, when a backhoe is transported by a truck or the like, the canopy can be moved back and forth,
Alternatively, there is one that can be tilted right and left.

[0004]

However, the following problems still remain in the retractable canopy structure as described above.

[0005] That is, when working in a place where there are obstacles or the like above the backhoe, it is convenient if the canopy located at the highest point can be defeated to perform the work.
The structure of the canopy described above is such that when the canopy is tilted to the side, the canopy protrudes to the side when it is tilted backward, and when it is tilted forward, when the canopy is tilted forward, the canopy moves forward from the operator. It blocks the view.

Therefore, even if the canopy is tilted sideways or rearward, the canopy protrudes, and there is a risk of damaging the canopy during operation. In addition, if the canopy is tilted forward, visibility is obstructed and safety cannot be ensured. Therefore, the operator could not work with confidence.

As described above, in the above-mentioned retractable canopy structure, there is no problem in transporting the backhoe, but when the canopy is folded down, the structure is extremely inappropriate for moving the machine to perform work. Was.

An object of the present invention is to provide a canopy structure in a backhoe that can solve the above-mentioned problems.

[0009]

Therefore, according to the present invention, a driver's seat and a control unit having an operation lever and the like are provided in front of the seat, and a work machine is provided in front of the control unit. A backhoe having a canopy for covering the driver's seat, wherein the canopy is capable of being turned up and down between a standing state and a forward falling state, and in a standing state, a sunshade portion of the canopy covers above the driver's seat. On the other hand, in the lying state, the awning portion of the canopy is stored between the work implement and the operation lever, and the control portion is configured to be able to hold the canopy by the locking portion provided on the canopy.

Further, the ceiling plate of the sunshade is characterized by being made of a transparent material.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the accompanying drawings.

FIG. 1 is an overall side view of a backhoe having a canopy structure according to the present invention, and FIG. 2 is a rear view showing the canopy structure.

As shown in FIG. 1, in the backhoe A, a swivel 4 is attached to the center of a crawler-type traveling device 1 via a swivel bearing 3, and the prime mover 2 and the like are housed on the swivel 4. A hood 6 is provided.

On the swivel 4, a driver's seat 15 is provided on the left side with respect to the traveling direction of the backhoe A, and a control unit 5 is provided in front of the seat 15, and a driver's seat 5 is provided above the seat 15. Has a canopy 19 comprising a canopy support 19a and a sunshade 20.

A lever stand 16 protrudes from the control unit 5, and an operation lever 18 is erected on the lever stand 16. Inside the lever stand 16, an operation lever 18 and a link mechanism (not shown) are provided. The control valve 21 which is interlocked and connected via is mounted.

A boom bracket mounting fulcrum 7 is protruded from the front of the swivel base 4, and the boom bracket 7 supports the boom 11 and the arm 10 for excavation work on the mounting fulcrum 7. Attach the bracket 8, attach the boom 9 to the bracket 8, and attach the arm 10 to the tip of the boom 9.
And the bucket 11 are connected so as to be able to move up and down and rotate freely.
Is composed.

A boom cylinder 12, an arm cylinder 13, and a bucket cylinder 14 for operating the work machine a
Are connected to the above-described control valve 21 via a hydraulic pipe, and when the operator operates the operation lever 18, the control valve 21 opens and closes appropriately, and the work implement a can be arbitrarily moved.

In FIG. 1, reference numeral 17 denotes a step surface of the control unit 5, reference numeral 25 denotes a stand cover for protecting the lever stand 16,
31 is a blade having an unloading operation and a stabilizer function,
Reference numeral 32 denotes an operating cylinder for moving the blade 31 up and down, reference numeral 33 denotes a connecting pin for connecting the bucket 11 and a link 34 for operating the bucket, and reference numeral 35 denotes a gripping rod.

The overall structure of the backhoe A in the present embodiment is as described above, and is the canopy which is the gist of the present invention.
The structure of 19 is described below in further detail.

That is, as shown in FIGS. 1 and 2, when the canopy 19 in the present embodiment is disposed, it has a gentle curved surface rearward in the traveling direction and a substantially dome-shaped ceiling. A sunshade portion 20 comprising a plate 20a and a frame portion 20b provided with a cutout portion 20c in the middle of the side edge, and canopy supports 19a, 19a connected to the side edge of the frame portion 20b, and a driver's seat. It is installed so as to cover the upper part of 15.

In the above configuration, the gist of the present invention is that the canopy 19 can be freely raised and lowered between an upright state X and a forwardly falling state Y, and the canopy 19 is in a driver's seat in the upright state. 15 and cover the canopy
With 19 lying down forward, the sunshade of the canopy 19
20 can be stored between the work implement a and the operation lever 18,
Further, the ceiling plate 20a of the sunshade 20 is formed of a resin having transparency.

That is, the canopy struts 19a, 19a constituting a part of the canopy 19 are formed in a smooth curved substantially L-shape, and the canopy struts 19a, 19a are arranged on the left and right sides of the driver's seat 15. The pivotal supports 41a of the provided canopy support bases 41, 41,
At 41a, the canopy 19 is pivotally attached by pivot pins 42 and 42, and is provided with appropriate fixing means.
It can be fixed with.

Therefore, the canopy 19 is connected to the canopy support column.
19a, 19a are pivotally supported by the pivotal support pins 42, 42 so as to be rotatable, and can be freely raised and lowered in an upright state X and a forwardly lying state Y. Will be done.

Further, in the lying state Y, the canopy
The awning portion 19 is deeply stored between the boom 9 and the operation lever 18 in the work implement a.

At this time, in this embodiment, since the operating lever 18 and the stand cover 25 for covering the operating lever 18 and the lever stand 16 are provided in front of the operating lever 18, the sunshade section 20 is connected to the boom 9 and the same stand cover. It will be stored between 25.

Also, on the side edge of the frame portion 20b of the sunshade portion 20,
A notch-shaped locking portion 20c is formed, and the upper ends of the gripping bars 35 provided on the left and right sides of the lever stand 16 are fitted into the locking portion 20c so that the canopy 19 can be held on the control unit 5. ing.

Further, the ceiling plate of the sunshade 20 of the canopy 19
Since 20a is made of permeable resin, the canopy
The forward visibility when the 19 is in the forward lying state Y is further improved, and it is possible to visually recognize the front part of the aircraft.

Further, since the sunshade portion 20 is formed in a substantially dome shape having a gentle curved surface portion on the rear side, a sufficient space is formed above the operation lever 18 when the sunshade portion 20 is stored. It is configured so as not to hinder the operation of the lever 18 by the operator.

Therefore, when the canopy 19 is in the forward lying state Y, the canopy 19 can secure a forward view from the operator and can be stored and held in a position where the operation of the operation lever 18 is not hindered. In addition, since the ceiling plate 20a is formed of a resin having transparency, the operator can secure a forward field of view equivalent to when the canopy 19 is in the upright state X, and can work with peace of mind.

Further, in a state in which the canopy 19 is stored, the ceiling plate 20a of the canopy 19 also functions as a front cover. Operators can be protected from stone scattering.

Therefore, in the standing state X, the canopy 19 functions as a normal canopy 19 to protect the head of the operator, and in the lying state Y, there is a height limitation by removing obstacles from above the operator. Enables work on site.

Further, if the transparent resin is a colored resin, direct sunlight can be blocked in the upright state X, so that the conventional function of the sunshade 20 is not impaired, and the sunshade 20 has a high visibility. It can also be secured.

Moreover, even when the vehicle is in the forward lying state Y, since it still has transparency, it is possible to secure a sufficient front view and the operator can work with peace of mind.

Next, as a second embodiment, there is the following canopy structure, and its structure will be described.

In this embodiment, only one rotation fulcrum of the canopy struts 59a, 59a is provided at the rear portion of the driver's seat 15, that is, as shown in FIGS. A pillar mounting base 51 is provided at the rear, and a pivot 51
a.

The canopy posts 59a, 59a are fixed at one end to the side edges of the frame portion 20a of the sunshade portion 20, extend vertically downward, and gently bend toward the pivot portion 51a. ing.

A suitable resistance material such as rubber, metal, or the like is fitted to each of the pivot points of the pivot 51a, and the canopy columns 59a, 59a can be held at any positions. Like that.

Further, fixing means may be provided as appropriate so that the columns 59a, 59a can be fixed in an upright state or a laid-down state.

In such a canopy structure as well,
The storage position of 19 is the same as that of the previous embodiment, and the structure of the sunshade 20 is the same, so that when stored, the visibility of the operator can be secured and the lever operation is not disturbed.

Further, if the ceiling plate 20a of the sunshade 20 is made of a transparent resin, the forward visibility can be further improved, and if it is made of a transparent and colored resin, the standing state can be improved. In X, direct sunlight can be prevented.

Furthermore, since there is only one pivot point or one fixed point, the operation of bringing the canopy 19 into the lying state Y is very simple.

[0042]

According to the present invention, the canopy can be freely raised and lowered between an upright state and a forwardly sloping state, so that the canopy can be obtained in a normal operation by setting the canopy in an upright state. Furthermore, if the canopy is lowered forward, in addition to the merit that the height of the package can be reduced when the backhoe is transported by truck, the operator can be used even in places where there are height restrictions. Can work.

Further, if the canopy that has fallen down against the operator's will rises, the canopy collides with an obstacle above the fuselage or the operator, and the canopy is damaged or the operator is injured. There is a possibility,
The canopy is provided with a locking section, which allows the control section to hold the canopy. Therefore, the canopy does not stand up unexpectedly, preventing damage to the canopy and ensuring operator safety. Can be improved.

When the canopy is retracted forward, a sufficient space is formed above the working lever.
There is no hindrance to the lever operation, and the operator can perform work almost as in a place without any restrictions.

In the state where the canopy is stored, the ceiling plate of the canopy also functions as a front cover, so that dust, earth and sand and stones are scattered when the bucket is operated during operation. Operators can be protected.

Further, since the ceiling plate of the sunshade is made of a transparent material, the field of view when the vehicle is stored in front of the canopy is further improved, so that it can be seen even immediately before the fuselage.
Safety and workability can be further improved.

[Brief description of the drawings]

FIG. 1 is an overall side view of a backhoe having a canopy structure according to the present invention.

FIG. 2 is a rear view showing the canopy structure.

FIG. 3 is an overall side view of a backhoe having a canopy structure according to a second embodiment.

FIG. 4 is a rear view showing the canopy structure.

[Explanation of symbols]

 A Backhoe a Work implement X Standing state Y Falling state 5 Control unit 15 Driver's seat 18 Control lever 19 Canopy 20 Sunshade 20a Ceiling panel

Claims (2)

(57) [Scope of request for utility model registration] A driver's seat (15) and a control unit (5) having an operation lever (18) and the like in front of the seat (15) are provided, and work is performed in front of the control unit (5). Machine (a)
In a backhoe (A) having a canopy (19) covering the driver's seat (15), the canopy (19) is in an upright state (X) and a forwardly lying state.
(Y) and the canopy (1)
9) The sunshade (20) covers the upper part of the driver's seat (15),
On the other hand, in the lying state (Y), the shade part (20) of the canopy (19) is
It is stored between the work implement (a) and the operating lever (18).
The control section is also provided by the locking section (20c) provided on the canopy (19).
(5) A canopy structure in a backhoe , wherein the canopy (19) is configured to be able to hold the canopy (19) . 2. The canopy structure in a backhoe according to claim 1, wherein the ceiling plate (20a) of the sunshade (20) is made of a transparent material.