JP3202866B2 - Cabin for construction machinery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine cabin provided on a construction machine such as a hydraulic shovel.

[0002]

2. Description of the Related Art In general, a construction machine such as a hydraulic excavator or a hydraulic crane includes a lower traveling body and an upper revolving body provided on the lower traveling body via a revolving device. Cabin (operator cab) for housing equipment and workers
Is provided.

FIGS. 7 to 9 show a hydraulic excavator and its cabin as such a conventional construction machine cabin.

[0004] In the drawings, reference numeral 1 denotes a lower traveling body, and 2 denotes an upper revolving body as a working machine main body which is rotatably provided on the lower traveling body 1 via a revolving device (not shown). The upper revolving unit 2 includes a main body frame 3 having a frame structure.
A machine room 4 provided on the main body frame 3, a counterweight 5 provided on the rear side of the main body frame 3 located on the rear side of the machine room 4, and a counterweight 5 provided on the front side of the machine room 4. And a cabin 7 described later provided on the front left side of the main body frame 3.

[0005] 6 is a main frame 3 adjacent to the cabin 7
Shows a working device provided on the front right side of
Is a boom 6 provided on the main body frame 3 so as to be able to move up and down.
A, an arm 6B provided on the tip side of the boom 6A so as to be able to move up and down, and a bucket 6C provided rotatably on the tip side of the arm 6B. These boom 6A, arm 6B and Each bucket 6C is operated by a hydraulic cylinder.

Reference numeral 7 denotes a cabin provided on the main body frame 3 and containing a driver's seat, operating equipment (both not shown) and the like inside. The cabin 7 has a ceiling portion 8A, a front portion 8
B, cab box 8 formed in a box shape from rear surface portion 8C and left and right side surface portions 8D, 8D (only the left side surface is shown)
And a floor plate (not shown) that forms the bottom of the cab box 8. And cab box 8
A ceiling window 9, a front window (not shown), a rear window 10, and side windows 11 and 11 are provided in a ceiling portion 8A, a front portion 8B, a rear surface portion 8C, and each side portion 8D, respectively.
D is provided with a door 12 for an operator to get on and off.

Cabin 7 of hydraulic excavator according to prior art
Has a configuration as described above, the worker who gets into the cabin 7 through the door 12 sits in the driver's seat and checks the outside through the front window, the rear window 10, the side window 11, and the like. While operating the operating devices, the work device 6 performs excavation work and the like.

In the above-described cabin 7 of a hydraulic excavator, a normal operator gets on and off the vehicle via the door 12. For example, when the hydraulic excavator falls down or submerges during work on a work site with a poor scaffold. Door 1 in emergency
If the door 2 does not open, the worker must quickly escape from the cabin 7 through an emergency exit other than the door 12.

As an emergency exit for such an emergency, for example, a rear window 10 provided on a rear portion 8C of the cab box 8 is used, and a rear window also serving as such an emergency exit for escape is used. 10 will be described below with reference to FIGS.

In the figure, reference numeral 13 denotes a rear surface portion 8 of the cab box 8.
C shows a window frame opening provided in the window frame opening 1;
Numeral 3 is formed in a square shape with an area that allows an operator to easily pass through.

Reference numeral 14 denotes a window frame seal attached to the periphery of the window frame opening 13 over the entire periphery thereof.
As shown in an enlarged manner in FIG. 10, reference numeral 4 denotes an outer peripheral window frame mounting groove 15 mounted on the peripheral edge of the window frame opening 13 and an inner peripheral side on which a peripheral edge of a glass plate 18 described later is mounted. It has a glass plate mounting groove 16 and an inner liner groove 17 opened in the cab box 8 and formed over substantially the entire periphery of the window frame seal 14, and is formed of an elastic resin material such as rubber. The glass plate mounting groove 16 is formed of a bottom portion 16A with which the outer peripheral surface of the glass plate 18 contacts, and a pair of side wall portions 16B, 16B with which the peripheral portion of the glass plate 18 contacts. The inner liner groove 17 has a fitting recess 17A having an arc-shaped cross section.

The window frame seal 14 has a low rigidity when a reinforcing liner 19 described later is not fitted in the inner liner groove 17, and the side wall portion 16 B of the glass plate mounting groove 16.
Are relatively easily deformed, but when the reinforcing liner 19 is fitted in the inner liner groove 17, the rigidity is increased, so that the inner liner groove 17 is not easily deformed.

Reference numeral 18 denotes a glass plate disposed in the window frame opening portion 13. The glass plate 18 has its peripheral edge mounted in the glass plate mounting groove 16 of the window frame seal 14 so as to be opened. It is positioned in the part 13. The glass plate 18 faces the side wall portion 16B of the glass plate mounting groove 16 toward the inside of the cab box 8 in a state where the reinforcing liner 19 is not fitted in the inner liner groove 17 of the window frame seal 14. By bending, the cab box 8 is attached to the window frame seal 14 from the inside.

Reference numeral 19 denotes an inner liner groove 17 of the window frame seal 14.
A reinforcing liner fitted to the reinforcing liner 19;
Is formed in a string shape from an elastic resin material such as rubber and has a length that covers substantially the entire circumference of the window frame seal 14. The reinforcing liner 19 is formed to have a cross section substantially equal to the inner liner groove 17 of the window frame seal 14, and has a fitting projection 19A fitted to the fitting recess 17A. After the glass plate 18 is mounted on the window frame seal 14, the reinforcing liner 19 is fitted into the fitting concave portion 17 </ b> A of the inner liner groove 17.
9A is fitted to the window frame seal 14 with an appropriate tightening margin, and the inner liner groove 17 is closed over substantially the entire circumference by connecting both ends with an adhesive or the like.

By fitting the reinforcing liner 19 into the inner liner groove 17 in this manner, the rigidity of the window frame seal 14 is increased, and the glass plate 18 is firmly fixed to the window frame opening 13 of the cab box 8. Can be positioned.

Reference numeral 20 denotes a U-shaped hook provided below the rear window 10 and provided at an intermediate portion of the reinforcing liner 19.
0A and 20A are formed. As shown in FIG. 11, a part of the reinforcing liner 19 to which the hook 20 is engaged partially extends from the inner liner groove 17 of the window frame seal 14.

Reference numeral 21 denotes a pull ring attached to each insertion hole 20A of the hook 20, and the pull ring 21 is
The reinforcement liner 19 can be easily removed from the inner liner groove 17 of the window frame seal 14 by pulling in the direction indicated by the arrow A (inside the cab box 8).

In the prior art configured as described above, when the rear window 10 is used as an emergency exit for emergency escape,
An operator pulls the pull ring 21 from the inside of the cab box 8 and removes the reinforcing liner 19 from the inner liner groove 17 of the window frame seal 14, thereby reducing the rigidity of the window frame seal 14 and moving the glass plate 18 to the cab box. 8 from the inside to the outside. Thereby, the glass plate 18
Can be securely removed from the window frame seal 14, and the operator can escape from the rear surface 8C side of the cab box 8 to the outside of the cabin 7 through the window frame opening 13.

[0019]

As described above, in the prior art, the inner liner groove 1 is provided between the glass plate 18 and the window frame opening 13 formed in the rear surface 8C of the cab box 8.
7 is provided, and the reinforcing liner 19 fitted in the inner liner groove 17 of the window frame seal 14 is removed, and the glass plate 18 is removed from the inside of the cabin 7 so that the rear window 10 can be urgently mounted. It is configured so that it can be used as an emergency exit for escape.

However, since the inner liner groove 17 for assisting the deformation of the window frame seal 14 when the glass plate 18 is mounted on the window frame seal 14 is provided inside the cab box 8, it is provided at the time of assembly. Alternatively, at the time of maintenance or the like, the operation of attaching the glass plate 18 to the window frame seal 14 is performed by using the cab box 8 in which the driver's seat, operation devices, and the like are accommodated.
Must be performed in a narrow work space from the inside, and there is a problem that the workability is greatly reduced.

The present invention has been made in view of the above-mentioned problems of the prior art, and a glass plate can be easily attached to an opening for a window frame which also serves as an emergency exit for escape in an emergency. It is an object of the present invention to provide a construction machine cabin that can be improved.

Another object of the present invention is to relatively easily attach the glass plate to the window frame opening of the cab box from the outside, so that the glass plate can be firmly positioned by the window frame seal. Another object of the present invention is to provide a cabin for construction machinery.

Further, another object of the present invention is to allow a glass plate to be attached from the outside of the cab box,
It is an object of the present invention to provide a construction machine cabin in which a glass plate can be securely removed from a window frame opening by a simple operation when the cab box escapes from the inside to the outside in an emergency or the like.

[0024]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a cab box provided on a frame of a construction machine and having a window frame opening, and a cab box for a window frame of the cab box. The present invention is applied to a cabin for a construction machine having a window frame seal mounted on an opening and positioning a glass plate in the window frame opening.

The invention according to claim 1 is characterized in that the window frame seal has an inner liner groove formed along the length direction of the window frame seal so as to open into the cab box; An outer liner groove formed along the length direction of the window frame seal so as to open to the outside of the window frame seal.

Further, as in the invention according to the second aspect, a reinforcing liner is fitted to the window frame seal in the inner liner groove and the outer liner groove with interference.
It is desirable that the glass plate be positioned.

Further, as in the invention according to claim 3, the window frame seal is formed of an elastic resin material over the entire circumference of the window frame opening, and the window frame seal includes the window. A mounting groove for the window frame on the outer peripheral side to be mounted on the opening for the frame, and a mounting groove for the glass plate on the inner peripheral side to be mounted on the glass plate are provided. It is preferable that the inner liner groove and the outer liner groove are located outside and are integrally formed.

According to a fourth aspect of the present invention, a reinforcing liner is previously fitted in the inner liner groove of the window frame seal before the window frame seal is mounted on the window frame opening of the cab box. It is desirable to provide a pull ring for attaching and detaching the reinforcing liner in the middle of the reinforcing liner.

According to a fifth aspect of the present invention, after the glass plate is mounted on the outside liner groove of the window frame seal in the mounting groove for the glass plate of the window frame seal from outside the cab box. Preferably, the reinforcing liner is fitted.

Further, as in the invention according to claim 6, it is preferable that the cab box has a window frame opening formed in each of a front surface portion, a rear surface portion, and left and right side portions.

[0031]

According to the above construction, with the window frame seal attached to the window frame opening of the cab box, the inner peripheral side of the window frame seal can be easily turned to the outside of the cab box along with the deformation of the outer liner groove. In this state, the glass plate can be easily attached from the outside of the cab box to the inner peripheral side of the window frame seal.

Then, reinforcing liners are fitted into the inner liner groove and the outer liner groove of the window frame seal from the inside and outside of the cab box, respectively, so that the rigidity of the window frame seal is increased. Can be positioned. In this case, a reinforcing liner is preferably fitted in the inner liner groove of the window frame seal in advance.

By integrally forming the window frame mounting groove, the glass plate mounting groove, the inner liner groove and the outer liner groove on the window frame seal, the glass plate can be attached to and detached from the window frame opening of the cab box. It can be performed reliably with a relatively simple structure.

Further, the reinforcing liner can be easily removed from the window frame seal by providing a pull ring for attaching and detaching the reinforcing liner at an intermediate position of the reinforcing liner fitted in the inner liner groove of the window frame seal. The glass plate can be securely removed from the inside of the cab box.

By mounting the glass plate on the window frame seal from the outside of the cab box, a large work space can be secured outside the cab box.

By providing window frame openings at the front, rear and left and right side portions of the cab box, an optimal location for an emergency exit for emergency escape can be appropriately selected.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the embodiment, the same components as those in the prior art shown in FIGS. 9 to 12 are denoted by the same reference numerals, and description thereof will be omitted.

In the drawing, reference numeral 31 denotes a cabin according to the present embodiment. The cabin 31 has a cab box 8 and a window frame opening formed on a rear surface portion 8C of the cab box 8 in substantially the same manner as the cabin 7 described in the prior art. A window frame seal 3 for positioning the glass plate 18 in the window frame opening 13, although it has a rear window 10 composed of a portion 13 and a glass plate 18.
2 are different.

Reference numeral 32 denotes a window frame opening 1 of the cab box 8.
3 shows a window frame seal interposed between the glass plate 3 and the glass plate 18 over the entire circumference thereof. The window frame seal 32 positions the glass plate 18 in the window frame opening 13. The window frame seal 32 is, as shown in an enlarged view in FIG.
3, a mounting groove 33 for the outer peripheral side mounted on the peripheral edge of the glass plate 18, a mounting groove 34 for the inner peripheral side of the glass plate in which the peripheral edge of the glass plate 18 is mounted, and a window frame seal opened inside the cab box 8. In addition to the inner liner groove 35 formed over the entire periphery of the cab box 8, the inner liner groove 35 has the same cross-sectional shape as the inner liner groove 35 and opens outside the cab box 8, and is formed over the entire periphery of the window frame seal 32. The outer liner groove 36 is formed integrally with an elastic resin material such as rubber.

The glass plate mounting groove 34 is formed of a bottom portion 34A with which the outer peripheral surface of the glass plate 18 contacts, and a pair of side wall portions 34B, 34B with which the peripheral portion of the glass plate 18 contacts. The inner liner groove 35 has a fitting recess 35A having an arc-shaped cross section, and the outer liner groove 36
Has a fitting recess 36A having an arc-shaped cross section.

Reference numerals 37 and 38 denote reinforcing liners fitted in the inner liner groove 35 and the outer liner groove 36 of the window frame seal 32, respectively. It is formed in a string shape from an elastic resin material such as rubber with a length over the entire circumference. The reinforcing liners 37 and 38 are formed to have substantially the same cross-sectional shapes as the inner liner groove 35 and the outer liner groove 36 of the window frame seal 32, respectively. It has a fitting projection 38A that fits into the recess 36A.

Therefore, when the reinforcing liner 37 is not fitted in the inner liner groove 35, the side wall portion 34 B of the glass plate mounting groove 34 formed in the window frame seal 32 crushes the inner liner groove 35. Can be easily bent inside the cab box 8. Further, when the reinforcing liner 38 is not fitted in the outer liner groove 36, the outer liner groove 36 can be easily bent outward by deforming the outer liner groove 36 so as to be crushed.

The inner liner groove 35 of the window frame seal 32
A U-shaped hook 20 is provided in the middle of the reinforcing liner 37 fitted to the
0, insertion holes 20A formed at both end sides facing each other,
A pull ring 21 is attached to 20A. Then, as in the prior art, the pull ring 21 is pulled toward the inside of the cab box 8 so that the window frame seal 32 is pulled.
The reinforcement liner 37 can be removed from the inner liner groove 35 of the first embodiment.

According to the present embodiment configured as described above, when mounting the glass plate 18 on the window frame opening 13 provided on the rear surface 8C of the cab box 8, as shown in FIG. With the reinforcing liner 37 fitted in the inner liner groove 35 in advance, the window frame mounting groove 33 of the window frame seal 32 is mounted on the periphery of the window frame opening 13.

Next, as shown in FIG.
The side wall portion 34B of the glass plate mounting groove 34 formed in the above is bent outside the cab box 8, and the glass plate 18 is mounted in the glass plate mounting groove 34 of the window frame seal 32 from outside the cab box 8. Thereafter, as shown in FIG. 5, the outer liner groove 36 of the window frame seal 32 on which the glass plate 18 is mounted.
Then, a reinforcing liner 38 is fitted from the outside of the cab box 8.

As a result, as shown in FIG. 6, reinforcing liners 37 and 38 are fitted into the inner liner groove 35 and the outer liner groove 36 of the window frame seal 32, respectively. The plate 18 can be positioned firmly.

The cabin 31 of the construction machine according to the present embodiment has the above-described configuration, and its basic operation is not particularly different from that of the prior art.

In this embodiment, however, the window frame opening 13 is provided.
An inner liner groove 35 and an outer liner groove 36 are formed in the window frame seal 32 mounted on the inner side, and the inner liner groove 35 and the outer liner groove 36 are respectively provided with reinforcing liners 37 and 3.
Since the glass plate 18 is positioned relative to the window frame opening 13 by fitting the fitting 8, the following effects can be obtained.

That is, when the glass plate 18 is mounted on the window frame seal 32 mounted on the window frame opening 13, the glass plate 1
8 can be attached from the outside of the cab box 8, so that a large work space can be secured outside the cab box 8 at the time of assembling or maintenance, and the workability is greatly improved. it can.

Further, the rear window 10 constructed as described above is used.
Is used as an emergency exit for emergency escape, the operator pulls the pull ring 21 inside the cab box 8 as in the prior art, and the inner liner groove 35 of the window frame seal 32.
By removing the reinforcing liner 37 from, the window frame seal 32 can be deformed relatively easily. In this state, by pressing the glass plate 18 from the inside of the cab box 8 to the outside, the glass plate 18 can be reliably removed from the window frame seal 32 by a simple operation, and the operator can promptly remove the window frame. Cab box 8 through opening 13
Can escape to the outside of the cabin 31 from the rear surface portion 8C side.

In the above embodiment, the cab box 8
Although the case where the rear window 10 provided in the rear surface portion 8C is used as an escape exit has been described, the present invention is not limited to this. For example, the front window provided in the front portion 8B of the cab box 8 or the cab box 8 The present invention may be applied to a case where a side window or the like provided on each side portion 8D is used as an escape exit.

[0052]

As described above in detail, according to the first aspect of the present invention, when the window frame seal is mounted on the window frame opening of the cab box, the inner peripheral side of the window frame seal is formed with the outer liner groove. The glass plate can be easily deformed toward the outside of the cab box as it is deformed, so the glass plate can be attached to the inner peripheral side of the window frame seal from the outside of the cab box with a large work space, and can be used during assembly or maintenance. Workability at times and the like can be greatly improved.

According to the second aspect of the present invention, the reinforcing liners are fitted into the inner liner groove and the outer liner groove of the window frame seal from the inside and the outside of the cab box, respectively, so that the window frame opening is formed. The positioning of the glass plate with respect to the part can be performed firmly.

According to the third aspect of the present invention, the mounting groove for the window frame, the mounting groove for the glass plate, the inner liner groove, and the outer liner groove are integrally formed with the window frame seal, so that the cab box window frame is formed. Attachment and removal of the glass plate to and from the opening can be reliably performed by appropriately selecting the outside or inside of the cab box.

Further, according to the fourth aspect of the present invention, a pull ring for detaching and attaching the reinforcing liner is provided at an intermediate portion of the reinforcing liner fitted in the inner liner groove of the window frame seal, so that the operation is simple. Since the reinforcing liner can be reliably removed from the window frame seal and the glass plate can be removed from the inside of the cab box, the operator can quickly move outside the cabin through the cab box window frame opening in an emergency or the like. You can escape.

According to the fifth aspect of the present invention, by mounting the glass plate to the window frame seal from outside the cab box, a large work space is secured outside the cab box during assembly or maintenance. Operability can be greatly improved.

According to the sixth aspect of the present invention, the cab box is provided with a window frame opening in the front, rear and left and right side portions, thereby providing an optimal location as an emergency exit for emergency. Can be appropriately selected according to the type of construction machine and the like.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing a rear window and the like of a cabin for a hydraulic shovel according to an embodiment of the present invention from the inside.

FIG. 2 is a partially cutaway perspective view showing a window frame seal and the like in FIG. 1 in a partially enlarged manner.

FIG. 3 is a longitudinal sectional view showing a process of mounting a window frame seal on a window frame opening according to an embodiment of the present invention.

FIG. 4 is a longitudinal sectional view showing a process of attaching a glass plate to a window frame seal according to an embodiment of the present invention.

FIG. 5 is a longitudinal sectional view showing a step of fitting a reinforcing liner to a window frame seal according to an embodiment of the present invention.

FIG. 6 is a longitudinal sectional view showing a state in which a glass plate is positioned in a window frame opening by a window frame seal according to an embodiment of the present invention.

FIG. 7 is an overall perspective view showing a conventional hydraulic excavator.

FIG. 8 is an enlarged perspective view showing only the cabin in FIG. 7;

FIG. 9 is a partially broken perspective view showing a rear window and the like of the cabin from the inside.

FIG. 10 is a partially broken perspective view showing a window frame seal and the like in FIG. 9 in a partially enlarged manner.

FIG. 11 is a cross-sectional view in the direction of arrows XI-XI in FIG. 9;

12 is a cross-sectional view similar to FIG. 11, showing a state in which a reinforcing liner is removed from the window frame seal shown in FIG. 9;

[Explanation of symbols]

 Reference Signs List 8 Cab box 8B Front part 8C Rear part 8D Side part 13 Window frame opening 18 Glass plate 20 Hook 21 Pull ring 31 Cabin 32 Window frame seal 33 Window frame mounting groove 34 Glass plate mounting groove 35 Inner liner groove 36 Outer liner Groove 37,38 Reinforcing liner

Claims (6)

(57) [Claims] 1. A cab box provided on a frame of a construction machine and having a window frame opening formed therein, and a cab box mounted on the window frame opening of the cab box, wherein a glass plate is placed in the window frame opening. In a construction machine cabin comprising a window frame seal for positioning, the window frame seal includes an inner liner groove formed along the length of the window frame seal so as to open into the cab box. And an outer liner groove formed along the length direction of the window frame seal so as to open to the outside of the cab box. 2. The glass plate according to claim 1, wherein the glass plate is positioned by fitting a reinforcing liner into the window liner seal in the inner liner groove and the outer liner groove with a tight allowance. Cabin for construction machinery. 3. The window frame seal is formed of an elastic resin material over the entire circumference of the window frame opening, and the window frame seal has an outer periphery attached to the window frame opening. A mounting groove for a window frame on the side and a mounting groove for an inner glass plate to be mounted on the glass plate are provided, and the inner liner is positioned between the mounting grooves inside and outside the cab box. 3. The cabin for a construction machine according to claim 1, wherein the groove and the outer liner groove are integrally formed. 4. A reinforcing liner is fitted into the inner liner groove of the window frame seal before the window frame seal is mounted on the window frame opening of the cab box. 4. The cabin for a construction machine according to claim 1, 2, or 3, wherein a pull ring for attaching and detaching the reinforcing liner is provided at an intermediate part thereof. 5. The glass plate is mounted on the outside liner groove of the window frame seal in the glass plate mounting groove of the window frame seal from outside the cab box, and then the reinforcing liner is fitted. The cabin for construction equipment according to claim 2, 3 or 4, wherein 6. The construction machine according to claim 1, wherein the cab box is formed with window frame openings at a front portion, a rear portion, and left and right side portions, respectively. cabin.