JP3310745B2 - Cabin structure of excavator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabin structure of an excavator.

[0002]

2. Description of the Related Art Conventionally, an excavating machine has a cabin provided on a substantially semicircular swivel having a vertically excavating and rotatable excavating section, and a control section and a driver's seat are housed in the cabin. With the specifications, the control unit and the driver's seat open,
There was a canopy specification with only a roof attached.

In the cabin specification, the cabin usually has a cabin body and a door for getting on and off, and the door for getting on and off has a hinge-type or slide-type opening and closing structure.

[0004] By the way, excavation work machines often work with the doors for getting on and off opened even if a cabin is provided, and therefore, in the open state, it is necessary to lock the doors for getting on and off.

Therefore, in addition to the lock device for closing the door, a lock device dedicated for opening is provided.
A lock device is provided for opening and closing the door so that the door can be hooked to the peripheral wall of the cabin at a position where the door is approximately 180 degrees open. Had a lock device exclusively for opening.

[0006]

However, the locking device dedicated to opening the cabin structure, described above, requires the operator to step down from the body and operate it, both when locking and unlocking, which is extremely troublesome. there were. In the above configuration, for example, when working in a narrow place,
In some cases, there is no space for the operator to get out of the cabin, and in this case, there is a problem that the opening / closing door cannot be opened and closed.

Further, the cabin-structured entrance door has
For example, when a sticker, a sticker, or the like is attached to the outside, the sticker or the like may be peeled off, which may impair the aesthetic appearance.

An object of the present invention is to provide a cabin structure of an excavator capable of solving the above problems.

[0009]

According to the present invention, a cabin having a cabin body and a door for getting on and off is provided on a substantially semicircular turntable on which an excavating portion which can be raised and lowered and which is rotatable is mounted. In a cabin structure of an excavating machine configured so that it does not protrude from the outer periphery of the swivel table in plan view, the doors for getting on and off are formed of transparent glass, and the inner surfaces of the doors for getting on and off are vertically transparent, respectively. The upper and lower windows and the coat are formed by applying the coating, leaving a transparent character part formed in an arbitrary character shape on the band-shaped coat part that borders both windows, and a color plate from the inside The present invention relates to a cabin structure of an excavator, wherein a cabin structure is provided.

The present invention also has the following configuration.

(A) A front opening / closing link and a rear opening / closing link are provided at the front and rear portions of the cabin main body and the door for getting on and off, respectively, and the door for getting on and off is moved in parallel from an open position to a closed position so that it can be opened and closed. In addition, the door for getting on and off is provided with an opening and closing lock mechanism that locks the door when opening and closing, and the opening and closing lock mechanism is
In the closed position, the door can be locked at the front of the door, and in the open position, it can be locked at the rear of the door.In addition, the same unlocking device allows the door to be unlocked at both open and closed positions. .

(B) An elastic stopper is provided in the vicinity of the door-side fulcrum of the front opening / closing link, and at the door opening position, the stopper comes into contact with the peripheral wall of the cabin body to support the door for getting on and off. The opening / closing lock mechanism locks the door at the rear of the door.

(C) An upper and lower split windshield is provided in the above-mentioned cabin, and edge rubber with a brush is attached to each of the wrap portions of the upper and lower glass.
The brushed rubber was formed of a transparent material.

(D) The windshield is formed in a flat plate shape and is slidable up and down, and the windshield is formed on the front left and right side walls of the cabin main body formed in a curved shape in a plain view. It was fitted with a certain level difference in the direction.

(E) A side glass is provided on the cabin main body on the side opposite to the door for getting on and off, and the side glass is formed in a curved shape like the peripheral wall of the cabin main body, and is formed inside a curved portion of the side glass. The storage portion was provided in a substantially semicircular space in plan view.

[0016]

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 a side view of an excavator having a cabin structure according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a perspective view of the cabin, and FIG. 4 is a side view of a main portion showing the cabin structure. FIG. 5 and FIG. 5 are explanatory views in the plan view.

As shown in FIGS. 1 and 2, the excavator A
Is mounted on a substantially semicircular swivel 2 via a swivel bearing 3 at the center of a crawler-type traveling device 1 and houses a motor, a fuel tank, etc. (not shown) on the swivel 2. A bonnet B having a curved surface is provided.

At the center of the front part of the swivel base 2, a digging portion connecting tool 8 is provided so as to support a bucket 10, a boom 11, an arm 12, etc. for performing digging work. Of the boom bracket 9, and through the bracket 9,
The excavation part E is connected so as to be able to move up and down and rotate freely.

In FIG. 1, 10a is a bucket cylinder,
11a is a boom cylinder, 12a is an arm cylinder, 13 is a blade having an earth discharging operation and a stabilizer function, and 14 is an operating cylinder for moving the blade 13 up and down.

As shown in FIG. 2, a cabin C is provided on the left side with respect to the traveling direction, and a steering section, a driver's seat, and the like are housed and arranged in the cabin C.

The cabin C comprises a cabin main body 6 having a windshield 7 and side glasses 15 and the like and a door 16 for getting on and off. It is constituted by a substantially arc-shaped peripheral wall in plan view so as not to protrude from the outer periphery.

The configuration of the excavator A in the present embodiment is as described above. Hereinafter, the configuration which is the gist of the present invention will be described in detail.

First, in the excavator A having the above configuration,
A front opening / closing link 17 and a rear opening / closing link 18 are provided at the front and rear portions of the cabin body 6 and the door 16 for opening and closing, respectively, so that the door 16 for opening and closing can be opened and closed by moving the door 16 in parallel from the open position to the closed position. An opening / closing lock mechanism G that locks the door 16 when the door is opened and closed is provided on the door 16 for getting on and off.
The door can be locked at the front of the door 16 when the door is closed and the door 16 can be locked at the rear when the door is open. The configuration described above will be described.

That is, as shown in FIGS. 4 to 6, the front opening / closing link 17 is provided with a door mounting opening 6a provided in the cabin body 6.
An upper link 17a connecting the upper edge of the door 16 to the upper front side of the door 16 and a lower link 17b connecting the lower edge of the door mounting opening 6a and the lower front side of the door 16 are formed. I have.
20a is a door handle provided with the open / close button 20, 25 is a door-side fulcrum of each link 17a, 17b, and 26 is a cabin-side fulcrum.

The rear opening / closing link 18 connects the rear side of the cabin main body 6 and the rear end of the entry / exit door 16 at a middle position of the entire height of the cabin C.

The front opening / closing link 17 and the rear opening / closing link.
With 18, the door 16 for opening and closing is moved in parallel from the open position to the closed position to open and close.

The opening / closing lock mechanism G is disposed on the back side of the door 16 for entrance and exit. As shown in FIGS. 5 and 6, when the door is closed, it can be locked at the front of the door 16 for entrance and exit. In the door position, the door 16 is locked so that it can be locked at the rear of the door 16.
The front lock 21 and the rear lock 22 are interlockingly connected by a connecting rod 23 so as to cross.

Further, as an unlocking device, a door for getting on and off
An opening / closing lever 19 provided on the outside of the front portion of the 16 and an opening / closing button 20 provided on the inside (driver's seat side) are linked to the opening / closing lock mechanism G via a link mechanism.

The front lock 21 is configured such that a front lock pin 21a provided on the cabin main body 6 side and a front hook 21b provided on the entrance / exit door 16 side engage with each other, and a rear lock 21a.
As shown in FIG. 5, reference numeral 22 denotes a rear lock pin 22a and a rear hook 22b provided on the cabin body side 6 similarly to the front lock 21.
Are configured to engage with each other.

By operating the opening / closing lever 19 and the opening / closing button 20, the front hook 21b and the rear hook 22b are operated.
Are simultaneously rotatable in the engaging direction and the disengaging direction via the connecting rod 23.

The front lock 21 and the rear lock 22
Briefly describing the configuration of FIG.
Is a pivoting lever that pivots about a fulcrum 21d in conjunction with the opening / closing lever 19, and 21e is a notch arm that pivots by pivoting the pivoting lever 21c, and the front hook is pivoted by the pivoting of the notch arm 21e. 21b is engaged / disengaged with the front lock pin 21a.

A pusher 21f is operable to move forward and backward in conjunction with the operation of the open / close button 20.
21f can turn the turning lever 21c.
Reference numeral 22d denotes a rear notch arm connected to the rear end of the connecting rod 23. The swing of the notch arm 22d causes the rear hook 22b to engage and disengage with the rear lock pin 22a.

Reference numeral 30 denotes a metal reinforcing plate provided on the inner surface of the door 16 for getting on and off, and the entire periphery of the edge of the door 16 for getting on and off.
It is attached to the above-mentioned band-shaped coat part 34. A part of the belt-shaped coat portion 34 is configured to be detachable by a screw 30a so that maintenance of the opening / closing lock mechanism B can be performed.

With the above configuration, the operator can operate the opening / closing lever 19 when getting on the vehicle and operate the opening / closing button 20 when getting off to open and close the door 16 for getting on and off.
At the door opening position, the passenger entry / exit door 16 can be easily locked.

Therefore, the operator can lock the door 16 at the open position by one operation of opening the door, and easily close the door 16 in the open state from the inside of the cabin C. And convenience is remarkably improved.

The rear lock pin 22a is attached to a lock pin stay 24 projecting from the cabin body 6 so that the rear lock pin 22a can be securely engaged with the rear hook 22b when the door 16 is closed. (See FIGS. 4 and 5).

In the cabin structure according to the present invention, an elastic stopper 27 is provided in the vicinity of the door-side fulcrum 25 of the front opening / closing link 17, and the stopper 27 is provided on the peripheral wall of the cabin body 6 at the door opening position. Another feature is that the door 16 is locked at the rear of the door 16 by the opening / closing lock mechanism G while being in contact with the door 16 for support.

That is, in this embodiment, as shown in FIG. 4, inside the door 16 for getting in and out of the vehicle, the upper link 17a and the lower link 17b constituting the front opening / closing phosphorus 17 are slightly behind the fulcrums 25, 25 on the door side. The stoppers 27, 27 are mounted so that they are located.

The stopper 27 has a distal end formed of an elastic body 27a, and the stoppers 27, 27 contact the peripheral wall of the cabin body 6 when the door is opened.

Further, when locked by the rear lock 22, the elastic members 27a of the stoppers 27 are deformed in the contracting direction and the repulsive force is stored, so that the lock is released. Is performed, the force required for the closing operation is reduced by the repulsive force, and the closing operation of the door 16 for entrance / exit becomes smooth. Therefore,
Even if hand movement is restricted in a narrow place or the like, the door 16 for getting on and off can be easily closed.

Further, according to the present invention, the entrance / exit door 16 is formed of transparent glass, and the inner surface of the entrance / exit door 16 is coated with a transparent portion while leaving upper and lower transparent portions, respectively. A transparent character portion 35 formed in an arbitrary character shape is provided on a band-shaped coat portion 34 that forms a boundary between the window portions 31 and 32, and a color plate 36 is attached from the inside. It has a special feature.

That is, the entrance door 16 is made of a single piece of transparent glass, and the coating is made of a black ceramic coat. The coating is applied over substantially the entire surface of the entrance door 16 except for the windows 31 and 32. , In such a coat part 33,
Front and rear opening / closing links 17, 18, an opening / closing lock mechanism G, a lock release device, and the like are arranged so as to be invisible from the outside.

As shown in FIG. 3, a boundary portion between the upper window portion 31 and the lower window portion 32 formed by leaving a part thereof uncoated and transparent is formed as a band-shaped coat portion 34, The coat portion 34 is formed with a transparent character portion 35 for displaying, for example, a company name and a machine nickname.

Further, as shown in FIG.
In order to make the character 35 a colored character, a color plate 36 is attached from the inside of the door so as to cover the character portion 35 so that the character can be read from outside as a colored character.

Therefore, the characters are easy to read, and since there is no need to attach a sticker, a sticker, or the like, for example, to the outside of the entry / exit door 16, there is no possibility that the characters will be peeled off. be able to.

Further, the opening / closing lock mechanism G can be blindfolded by the belt-shaped coat portion 34 so as not to be seen from the outside, and the other coat portion 33 allows, for example, the door-side fulcrum 25 of the front opening / closing link 17 to be closed. Since 25 mag can be made invisible from the outside, the appearance can be improved.

In this embodiment, a seal is applied to the entire periphery of the entrance / exit door 16 constructed as described above to provide waterproofing.
Improves soundproofing.

Further, according to the present invention, the windshield 7 provided in the cabin C is divided into upper and lower parts, and
The present invention is also characterized in that the edge rubber with brush 37 is attached to each of the lap portions of the lower glasses 7a and 7b, and the edge rubber with brush 37 is formed of a transparent material.

That is, as shown in FIGS. 8 and 9, the windshield 7 is divided into upper and lower parts, and each of the upper and lower parts is slidable. With attached rubber 37, both glass
Draft, dust and insects are prevented from entering through the gap between 7a and 7b.

However, in general, such a brushed edge rubber 37 is used.
Is black or the like, which obstructs the field of view for the driving operator, and is also annoying. Therefore,
According to the present invention, the brush rimmed rubber 37 is formed of a transparent material so as to secure a front view and enhance visibility, to eliminate an unsightly feeling, and to enable safe driving and work.

In this embodiment, the edge rubber 37 with the brush is used.
The brush portion 37a is also formed of a transparent resin or the like.

The windshield 7 is formed in a flat plate shape and slidable up and down, and the windshield 7 is formed in a cabin body 6 having a curved shape in a plain view.
The front left and right side walls 61 and 62 are also characterized by being provided with a constant step d inside the cabin body 6.

That is, as shown in FIGS. 3 and 5, the upper and lower glasses 7a, 7b of the windshield 7 are made of flat glass, and the above-mentioned window frame is formed on the front left and right side walls 61, 62 of the cabin body 6. 7c to form a windshield 7 on the window frame 7c.
Is fitted. In addition, the cabin main body 6 itself is formed in a curved shape, whereas the front glass 7 is formed in a flat plate shape, and the cabin main body 6 is fitted inside the cabin main body 6 with a certain level difference d.

With this configuration, when turning the excavation part E, it is possible to prevent the hydraulic piping or the like from interfering with the windshield 7, and the front left and right side walls 61 and 62 function as a sun visor. Block light from oblique directions,
The driver's view can be kept good.

In FIG. 8, W is a wiper mechanism, 38
Is the wiper blade of the wiper mechanism W, 39 is the same blade
The blade holding portion 38 is provided above the front left wall 61 of the cabin main body 6.

For example, when the driver lowers the upper glass 7a of the windshield 7 and stores it downward to open the front of the cabin 6 for ventilation or the like,
Since the wiper blade 38 is biased toward the upper glass 7a, the wiper blade 38 enters the cabin 6 without the upper glass 7a.

In this state, the driver is obstructed. Therefore, the blade holding portion 39 is mounted on the upper portion of the front left wall 61 of the cabin main body 6, and the wiper blade 38 is engaged with the engaging portion 39 to support the same. ing.

Further, as a characteristic of the cabin structure according to the present invention, a side glass 15 provided on the cabin main body 6 on the opposite side to the door 16 for getting on and off is formed in a curved shape like the peripheral wall of the cabin main body 6, and The storage section 41 is provided in a side space formed in the curved portion of the side glass 15 and having a substantially half-moon shape in plan view.

This is, as shown in FIG.
15 is formed in a circular arc shape with the same curvature as the peripheral wall of the cabin main body 6 so as to maintain the harmony of the entire cabin C without deteriorating the aesthetic appearance. Further, the curved portion of the side glass 15 and the glass 15 A storage section 41 such as an accessory case is provided in a substantially half-moon-shaped space formed between the front and rear ends of the storage box.

By providing such a storage portion 41 in the above-mentioned substantially half-moon-shaped space, a convenient storage portion 41 is provided in the cabin C while securing a spacious living space without reducing the space on the driver's seat side. It can be provided in.
Therefore, the livability of the driver is greatly improved, and the work efficiency can be improved.

[0062]

As described above, according to the present invention, the following effects can be obtained.

(1) A cabin having a cabin main body and a door for getting on and off is provided on a substantially semicircular revolving base on which an excavating part which can be moved up and down and is rotatable is mounted. In the cabin structure of the excavator constructed so as not to protrude from the outer periphery of the excavator, the doors for getting on and off are formed of transparent glass, and the inner surfaces of the doors for getting on and off the doors are coated with leaving a transparent portion at the top and bottom respectively. To form the upper and lower windows and the coat part, and the band-shaped coat part that borders both windows,
In addition to providing a transparent character part formed in an arbitrary character shape,
By attaching the color plate from the inside, the characters are easy to read, and there is no need to attach, for example, stickers or stickers to the outside of the doors for getting on and off, and it does not peel off, so it is not aesthetically pleasing. Can be kept permanently.

Further, the opening / closing lock mechanism provided on, for example, the entry / exit door can be blindfolded by the band-shaped coat portion so that it cannot be seen from the outside, so that the appearance can be improved.

(2) A front opening / closing link and a rear opening / closing link are provided at the front and rear portions of the cabin main body and the door for entrance / exit, respectively, and the door for entrance / exit is moved in parallel from an open position to a closed position so that the door can be opened and closed. In addition, the doors for getting on and off are provided with an opening and closing lock mechanism that locks the door when opening and closing.The opening and closing lock mechanism can be locked at the front of the door for getting on and off when the door is closed, and at the rear of the door for getting on and off when the door is open. The lock is configured to be lockable, and the same unlocking device enables unlocking at both open and closed door positions, allowing the operator to operate the unlocking device from the outside when getting on the vehicle and from the inside when getting off the vehicle. The door for getting on and off can be opened and closed, and the door for getting on and off can be easily locked at the opening position only by performing the door opening operation.

Accordingly, the operator can lock the door for entry / exit at the open position with a single opening operation, and can easily close the entrance / exit door in the open state from the inside of the cabin. And the convenience is remarkably improved.

(3) An elastic stopper is provided in the vicinity of the fulcrum of the front opening / closing link on the door side. When the door is in the open position, the stopper is brought into contact with the peripheral wall of the cabin body to support the door for getting on and off. The opening and closing lock mechanism locks the door at the rear of the door, so that when the door is unlocked and the door is closed, the force required for the closing operation is reduced by the repulsive force of the stopper. As a result, the closing operation of the door for getting on and off becomes smooth. Therefore, even if the movement of the hand is restricted in a narrow place or the like, the entrance door can be easily closed.

(4) The above-mentioned cabin is provided with an upper and lower split windshield, and brushed edge rubber is attached to each of the upper and lower glass laps, and the brushed edge rubber is made of a transparent material. With this configuration, it is possible to secure a forward field of view and enhance visibility, eliminate a feeling of obstruction, and perform safe driving and work.

(5) The windshield is formed in a flat plate shape, and the glass is fitted into the front left and right side walls of the cabin main body, which is formed in a curved shape in a plain view, by providing a constant step inside the cabin main body. When the excavation part is turned by the mounting, it is possible to prevent the hydraulic piping or the like from interfering with the windshield. In addition, the front left and right side walls function as sun visors, and block light from oblique directions, so that the driver's view can be kept good.

(6) The cabin main body is provided with a side glass on the side opposite to the entrance door, and the side glass is formed in a curved shape like the peripheral wall of the cabin main body.
Convenient storage while securing a spacious living space without reducing the space on the driver's seat side by providing a storage section in a substantially semi-lunar space in plan view formed inside the curved portion of the side glass. The part can be provided in the cabin. Therefore, the livability of the driver is greatly improved, and the work efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of an excavator having a cabin structure according to the present invention.

FIG. 2 is a plan view of the excavator.

FIG. 3 is a perspective view of a cabin.

FIG. 4 is an explanatory side view showing a main part of the cabin structure according to the present invention.

FIG. 5 is an explanatory diagram in the same plan view.

FIG. 6 is an explanatory view of an opening / closing lock mechanism.

FIG. 7 is a sectional view taken along line II of FIG. 4;

FIG. 8 is an explanatory view of the windshield as viewed from the front.

FIG. 9 is a cross-sectional view taken along the line II.

[Explanation of symbols]

 Reference Signs List A Excavator C Cabin E Excavator G Opening / closing lock mechanism 2 Swivel 6 Cabin body 7 Front glass 7a Upper glass 7b Lower glass 15 Side glass 16 Getting on / off door 17 Front opening / closing link 18 Rear opening / closing link 25 Door fulcrum 27 Stopper 31 Upper window part 32 Lower window part 33 Coat part 34 Band-shaped coat part 35 Transparent character part 36 Colored plate 37 Brushed rubber

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Takeshi Akiyama 428 Enami, Okayama City, Okayama Pref. Inside Sairei Kogyo Co., Ltd. (56) References JP-A 4-122765 (JP, U) JP-A 4-134567 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) E02F 9/16 B60J 1/16 E05B 65/12

Claims (6)

(57) [Claims] A cabin body (6) and a door (1) are mounted on a substantially semicircular swivel (2) on which an excavating part (E) that can be moved up and down and rotatable is mounted.
6) and a cabin (C) comprising: a cabin (C) of an excavating machine configured such that the cabin (C) does not protrude from the outer periphery of the swivel base (2) in plan view . The entrance door (16) is made of transparent glass, and
Leave transparent parts on the inner surface of the door (16)
The upper and lower windows (31) and (32) and the coating
(33), and a strip-shaped core that borders both windows (31) and (32).
A transparent character part formed in an arbitrary character shape
A cabin structure for an excavator , wherein (35) is provided and a color plate (36) is attached from the inside . 2. The cabin body (6) and the door (16)
Front opening / closing link (17) and rear opening / closing link (18)
The doors for getting on and off (16) are closed from the open position to the closed position.
To be openable and closable,
An opening / closing lock mechanism (G) that locks the door (16) when opening and closing
The opening / closing lock mechanism (G)
Lockable at the front of (16), getting on / off door (16) in the open position
Lockable at the rear and the same lock release
The cabin structure of an excavator according to claim 1 , wherein the unlocking device enables the unlocking at the positions of the open and closed doors . 3. A door-side fulcrum (25) of the front opening / closing link (17).
An elastic stopper (27) is provided near the
Then, apply the stopper (27) to the peripheral wall of the cabin body (6).
Touch the door (16) to support
Lock mechanism (G) to lock at the rear of the door (16).
The cabin structure of an excavator according to claim 1 or 2, wherein the cabin structure is configured as follows. 4. A cabin (C) is provided with an upper and lower two-part windshield (7) and upper and lower glass (7).
a) and (7b) at the wrap locations,
The cabin structure of an excavating machine according to any one of claims 1 to 3, wherein the brushed edge rubber (37) is formed of a transparent material. 5. A cabin main body (6) in which the windshield (7) is formed in a flat plate shape and is slidable up and down, and the windshield (7) is formed in a curved shape in plain view.
5. The cabin structure of an excavating machine according to claim 4, wherein a fixed step (d) is provided inside the cabin body (6) on the front left and right side walls of the excavator. 6. A door (16) for getting on / off the cabin body (6).
A side glass (15) is provided on the opposite side of the side glass, and the side glass (15) is formed in a curved shape like the peripheral wall of the cabin body (6), and furthermore, a plane formed inside the curved portion of the side glass (15). The cabin structure of an excavator according to any one of claims 1 to 5, wherein a storage portion (41) is provided in a substantially semi-lunar space.