JP3156944B2 - Driving cabin of construction equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating cabin of a construction machine.

[0002]

2. Description of the Related Art Conventionally, a construction machine such as a backhoe is provided with an operating cabin.
The door was opened and closed on the side of the driving cabin via a hinge, but when the construction machine turned, the door opened and closed, and
Since the opened door may come into contact with other machines and cause an accident, as disclosed in Japanese Utility Model Laid-Open No. 4-37656, upper and lower rails that extend in the front-rear direction are installed on the side of the driving cabin. A door having rollers is slidably mounted on the rail, and the door is slid along the rail to open and close, so that the door does not particularly protrude from the construction machine.

[0003]

However, the above construction machine has the following problems. That is, upper and lower rails are arranged on the side of the driving cabin, and when soil is excavated by a bucket provided in the construction machine, the soil falls on the driving cabin, and the soil accumulates or falls on the rail. If the rails were deformed by the rubbing stones and the door could not be opened and closed smoothly, a problem occurred.

Further, a certain gap is provided between the rail and the roller provided in the driving cabin so that the door can be easily opened and closed. However, during operation, the door is rattled due to the gap with the roller. .

[0005] An object of the present invention is to provide an operation cabin of a construction machine capable of solving the above-mentioned problems.

[0006]

According to the present invention, in an operation cabin provided on a construction machine, a front upper and lower portion of a door is connected to a side surface of the operation cabin via an upper and lower link, and the operation cabin of the operation cabin is connected to the side of the operation cabin. An operation cabin of a construction machine in which a rear side portion of a door is connected to a rear halfway position of a side wall via a rear link having substantially the same length as the link, and the door is configured to be freely opened and closed in the front-rear direction. A front pivotal portion protruding from the substantially central portion of the upper edge of the entrance and exit of the driving cabin toward the inside of the driving cabin, and an operation box is provided between a seat and a door provided in the driving cabin. The operation cabin of a construction machine is characterized in that the base end of the upper link is pivotally connected to the front pivotal support portion above the operation box to secure a space between the seat and the entrance. It will not be provided.

Further, in the present invention, in the above-mentioned operating cabin, a front upper and lower portion of a door is mounted on a side surface of the operating cabin via an upper and lower link, and a slide rail is provided on a rear side portion of a side wall of the operating cabin. The present invention also provides a driving cabin for construction machinery, wherein the rear side of the door is slidably connected to the rail so that the door can be opened and closed in the front-rear direction.

Further, the present invention provides the above-described driving cabin, wherein both ends of a substantially L-shaped link rod are pivotally attached to the side surface of the driving cabin and the upper and lower front portions of the door. A slide rail is provided on the rear side of the side surface, and the rear side of the door is slidably connected to the rail so that the door can be opened and closed in the front-rear direction.

Further, the present invention is characterized in that a glass window is provided on the front side of the ceiling of the driving cabin, and an air conditioning unit is provided on the rear side of the ceiling.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a construction machine according to the present invention; FIG. 1 is a side view of a construction machine according to the invention; FIG. A turning base 4 is erected substantially at the center of the traveling frame 3, and a substantially circular turning table 5 is mounted on the turning base 4 so as to be freely turnable. An operating cabin 6 having an operating section is provided on the left side, and a hood 7 containing a motor and the like is provided on the right side thereof.

An excavator 8 is provided at the front end of the turntable 5.
Is pivotally attached to the base end so as to be vertically rotatable. As shown in FIG. 1, the excavator 8 attaches a base end of a boom 10 to a swivel base 5 via a boom bracket 9 so as to be vertically rotatable, and further attaches an arm 11 to a tip end of the boom 10. At the same time as being pivotally connected, a bucket 12 is attached to the tip of the arm 11. Then, a hydraulic cylinder 13 is provided in each part of the excavator 8 to perform excavation work. Reference numeral 14 denotes an earth removal plate provided on the traveling frame 3.

In the present invention, the operation cabin 6 provided on the swivel base 5 has the feature thereof. The configuration of the operation cabin 6 will be described below in detail with reference to the drawings. That is, as shown in FIGS. 1 and 2, a windshield 15 is mounted on the front surface of the driving cabin 6, and an operation lever and the like are arranged in the cabin 6 via a seat 16 and operation boxes 17 on both sides thereof. are doing. In addition, driving cabin 6
A door 18 is provided at the entrance S provided at the front of the side wall 6a so as to be openable and closable, so that the worker can enter and exit by opening and closing the door 18.

In this embodiment, as shown in FIG. 1, a door 18 is moved in the front-rear direction through a link mechanism 19 at an entrance S of the operation cabin 6 and the link mechanism 19 At the upper and lower portions of the door 18, both ends of the substantially L-shaped upper and lower links 20, 20 are pivotally connected, and at the rear central portion of the door 18, both ends of the rear link 21 are pivotally connected. I have.

At the center of the entrance S of the driving cabin 6, front pivots 22 are provided at the upper and lower portions, respectively, and the pivots 22, 22 are provided at the base ends of the links 20, 20. Is pivotally connected in the front-rear direction, a rear pivot 23 is provided on the side wall 6a of the cabin 6, and the other end of the rear link 21 is pivotally attached to the rear pivot 23. I have.

In this embodiment, as shown in FIG.
The front pivot 22 is provided above the operation box 17 interposed between the front pivot 22 and the door 18, and the upper link 20 is attached to the front pivot 22.
From the seat 16 by pivoting the base end of
The space is secured so that workers can enter and exit smoothly.

The side wall 6a of the driving cabin 6 has a rear window 6b for checking the rear side, and a groove 24 extending in the front-rear direction is provided below the window. 6a
A link storage space 24a is formed, and a rear pivot 23 is provided in the middle of the space 24a so that the rear link 21 is stored in the space 24a.

With such a configuration, the door of the driving cabin 6
When the door 18 is opened and closed, the door 18 is pushed outward, and the respective links 20, 20, and 21 of the link mechanism 19 are operated in conjunction with the door 18, and the door
18 is moved in parallel to the rear of the driving cabin 6 to open and close it, and the rear link 21 is provided with a groove 24 formed in the side wall 6a.
And is prevented from protruding from the wall surface 6a. In addition, the rear window 6b of the driving cabin 6 widens the field of view behind, so that safety can be ensured.

As another embodiment of the present invention, as shown in FIGS. 3 and 4, a slide rail 25 extending in the front-rear direction is attached to a side wall 6a of the driving cabin 6, and the rail 25
The rear side of the door 18 is slidably connected. In the present embodiment, as shown in FIG. 3, the base end of a short rear link 26 is pivotally attached to the rear side of the door 18, and a roller that slides a slide rail 25 is attached to the front end of the link 26. 27 is installed. Further, the rear link 26 is accommodated in the slide rail 25.

In the above configuration, since the slide rail 25 is provided in the middle of the side surface of the driving cabin 6, the same rail is provided.
The soil is prevented from dropping on 25 to avoid its damage.

As shown in FIGS. 1 and 2, a glass window 28 for confirming the upper part of the ceiling 6c of the driving cabin 6 is provided on the front side of the ceiling 6c. An air conditioning unit 29 is provided on the rear side. Further, a storage space 30 having an exhaust duct is provided in a ceiling 6c of the driving cabin 6, and an air conditioning unit 29 is built in the space 30.

With this configuration, the operator can visually recognize the upper part of the driving cabin 6 while sitting on the seat 16, and the air conditioning unit 29 is arranged on the rear side of the ceiling part 6c. Thereby, the inside of the driving cabin 6 is widened to secure the living space.

In this embodiment, as shown in FIGS. 5 and 6, a wiper 32 is provided on the windshield 15 of the driving cabin 6, and a motor 33 is mounted on the upper left portion of the glass 15. The base ends of the left and right wiper arms 34 having a longitudinal shape are rotatably connected to the output shaft of the motor 33.
A wiper blade 35 is attached to the tip of the, and the wiper blade 35 on the glass is moved by the drive of the motor 33 so that rainwater on the windshield 15 is wiped off. In addition, when the wiper blade 35 is mounted on the tip of the wiper arm 34 and the mounting position of the wiper blade 35 is eccentric downward, and the blade 35 is operated, the wipe amount of the windshield 15 of the blade 35 is increased.

In this embodiment, as shown in FIG.
A rear portion of the operating cabin 6 is curved, and a condenser 36 connected to the air conditioning unit 29 is disposed on the rear right side. With such a configuration, the operator can easily visually recognize the side and rear portions of the driving cabin 6 without hindering the condenser 36 while sitting on the seat 16.

[0024]

According to the present invention, when the door provided at the entrance of the driving cabin is opened, the door is moved in a substantially parallel state behind the driving cabin by the upper and lower links and the rear link to open and close the door. be able to. When the door is opened via the upper and lower links, the rear side of the door is slid along the slide rail provided on the rear side of the driving cabin, and the door is moved substantially parallel to the rear of the driving cabin. By doing so, the door can be opened and closed. In particular, the space from the seat to the doorway by pivoting the base end of the upper link on the front pivot above the operation box interposed between the seat and the door, and by pivoting the base of the upper link to the front pivot. Therefore, workers can enter and exit smoothly.

Therefore, according to the present invention, the door can be easily opened and closed by moving the door in the rearward direction and opening and closing the door, even if soil excavated from the bucket falls onto the driving cabin. be able to. Moreover, by opening and closing the door by the link mechanism, there is no backlash with the door,
Therefore, a smooth opening / closing operation can be performed.

Further, according to the present invention, a glass window is provided on the front side of the ceiling of the driving cabin, so that the operator can visually recognize the upper part of the driving cabin while sitting on the seat, and can use the ceiling. By arranging the air conditioning unit on the rear side, the inside of the driving cabin 6 can be widened to secure the living space.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the backhoe.

FIG. 3 is an explanatory view showing another embodiment of the driving cabin.

FIG. 4 is a side view of the driving cabin.

FIG. 5 is a front view of a wiper provided on a windshield.

FIG. 6 is a sectional side view of the wiper.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 4-122765 (JP, U) JP-A 4-130352 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02F 9/16

Claims (3)

(57) [Claims] An operation cabin provided on a construction machine has upper and lower links (20) and (2) on side surfaces of the operation cabin (6).
0) together when connecting the front upper and lower portions of the door (18) via, on the side midway position after the sidewall of the operating cabin (6), the link (2
(0) is connected to the rear side of the door (18) via a rear link (21) having substantially the same length as the operation cabin of the construction machine in which the door (18) can be opened and closed in the front-rear direction. there are, operated from the upper Enryaku central portion of the doorway (S) of the driver cabin (6)
Project the front pivot (22) toward the inside of the cabin (6),
And the seat (16) and the door (18) provided in the driving cabin (6)
An operation box (17) is interposed between the
View the front pivot (22) above the upper part of the upper link (2).
(0), and pivot between the seat (16) and the entrance (S).
An operating cabin for construction machinery, which has a secured pace . In the above-mentioned operation cabin, a door (1) is provided on a side surface of the operation cabin (6) through upper and lower links (20) and (20).
8) Install the front upper and lower parts and
A slide rail (25) is provided on the rear side of the side wall of (6), the rear side of the door (18) is slidably connected to the rail (25), and the door (18) is The operating cabin of a construction machine according to claim 1, wherein the cabin is configured to be openable and closable. 3. An operation cabin (6) is provided with a glass window (28) on the front side of the ceiling for confirming the upper part thereof, and an air conditioning unit (29) is provided on the rear side of the ceiling. The operation cabin of a construction machine according to claim 1 or 2, wherein