JPH07246840A - Cabin for construction machinery - Google Patents

Abstract

PURPOSE:To improve the workablility by securing the wide working space when a glass plate is installed at an opened port part for window frame which is used in common as an emergency exit for escape in an emergency. CONSTITUTION:An inside linear groove 35 and an outside linear groove 36 are formed on a window frame seal 32 installed on an opened port part 13 for window frame, and a glass plate 18 is installed on the window frame seal 32 from outside a cab box by utilizing the deformation of the outside linear groove 36, and then a 38 for reinforcement is fitted into the outside linear groove 36. Accordingly, the wide working space can be secured when the glass plate 18 is installed on the window frame seal 32, and the workability can greatly be improved. Further, since the glass plate 18 can be demounted surely from the inside of the cab box, by removing a linear 37 for reinforcement from the inside linear groove 35 of the window frame seal 32, a worker can surely escape outside the cabin speedily.

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 in a construction machine such as a hydraulic excavator.

[0002]

2. Description of the Related Art Generally, a construction machine such as a hydraulic excavator or a hydraulic crane is provided with a lower traveling body and an upper revolving body provided on the lower traveling body through a revolving device, and the upper revolving body is operated by the operating body. Cabin (driver's cab) that houses equipment, workers, etc.
Is provided.

As such a conventional construction machine cabin, a hydraulic excavator and its cabin are illustrated in FIGS. 7 to 9.

In the drawings, 1 is a lower traveling body, 2 is an upper revolving body as a working machine body, which is provided on the lower traveling body 1 so as to be rotatable through a revolving device (not shown). The upper swing body 2 is a body frame 3 having a frame structure.
A machine room 4 provided on the body frame 3, a counterweight 5 provided on the rear side of the machine room 4 at the rearmost portion of the body frame 3, and a machine weight 4 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.

Reference numeral 6 is adjacent to the cabin 7 and is a body frame 3
The working device provided on the right side of the front of the
Is a boom 6 which is provided on the main body frame 3 so as to be able to descend and descend.
The boom 6A, the arm 6B, and the arm 6B rotatably provided on the tip end side of the boom 6A and the bucket 6C rotatably provided on the tip end side of the arm 6B. Each bucket 6C is operated by a hydraulic cylinder.

Reference numeral 7 denotes a cabin which is provided on the main body frame 3 and accommodates a driver's seat, operating devices (neither is shown), etc. inside, and the cabin 7 has a ceiling portion 8A and a front portion 8
B, a cab box 8 formed in a box shape from the rear surface portion 8C and the 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 the cab box 8
The ceiling portion 8A, the front surface portion 8B, the rear surface portion 8C, and the side surface portions 8D are respectively provided with a skylight 9, a front window (not shown), a rear window 10, side surface windows 11 and 11, and a left side surface portion 8
A door 12 is provided in D for an operator to get on and off.

Cabin 7 of hydraulic excavator according to the prior art
Has the above-mentioned configuration, and an operator who gets in the cabin 7 through the door 12 sits in the driver's seat and confirms the outside through the front window, the rear window 10, the side window 11, and the like. While operating the operating devices, the working device 6 performs excavation work and the like.

By the way, in the cabin 7 of the hydraulic excavator described above, a normal operator gets in and out of the cabin through the door 12. However, for example, when the hydraulic excavator falls or is submerged in water during work at a work site where the footing is poor. Door 1 in an emergency
If 2 does not open, the worker needs to quickly escape to the outside of the cabin 7 through the emergency exit other than the door 12.

As such an emergency exit for an emergency, for example, a rear window 10 provided on the rear surface portion 8C of the cab box 8 is used. The rear window also serves as such an emergency exit. The configuration of 10 will be described below with reference to FIGS. 9 to 12.

In the figure, 13 is a rear surface portion 8 of the cab box 8.
The window frame opening provided in C is shown, and the window frame opening 1 is shown.
3 is formed in a quadrangular shape with an area such that an operator can easily pass through it.

Reference numeral 14 denotes a window frame seal which is attached to the peripheral edge of the window frame opening 13 along the entire circumference thereof.
As shown in an enlarged scale in FIG. 10, the outer peripheral side window frame mounting groove 15 mounted on the peripheral edge of the window frame opening portion 13 and the inner peripheral side side on which the peripheral edge of a glass plate 18 described later is mounted are shown in FIG. It has a glass plate mounting groove 16 and an inner liner groove 17 that is opened in the cab box 8 and formed over substantially the entire circumference 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 abuts, and a pair of side wall portions 16B, 16B with which the peripheral edge portion of the glass plate 18 abuts. Further, the inner liner groove 17 has a fitting recess 17A having an arc-shaped cross section.

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

Reference numeral 18 denotes a glass plate disposed in the window frame opening 13, and the glass plate 18 has its peripheral edge mounted in the glass plate mounting groove 16 of the window frame seal 14 to open the window frame opening. It is positioned in the part 13. In the glass plate 18, with the reinforcing liner 19 not fitted in the inner liner groove 17 of the window frame seal 14, the side wall portion 16B of the glass plate mounting groove 16 faces the inside of the cab box 8. By bending, the window frame seal 14 is mounted from the inside of the cab box 8.

Reference numeral 19 denotes an inner liner groove 17 of the window frame seal 14.
Showing the reinforcing liner fitted to the
Is formed from an elastic resin material such as rubber in a string shape with a length extending substantially all around the window frame seal 14. Further, the reinforcing liner 19 is formed with a cross-sectional shape that is substantially the same as the inner liner groove 17 of the window frame seal 14, and has a fitting convex portion 19A that fits into the fitting concave portion 17A. After the glass plate 18 is attached to the window frame seal 14, the reinforcing liner 19 is fitted into the fitting concave portion 17A of the inner liner groove 17 by the fitting convex portion 1A.
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 thus fitting the reinforcing liner 19 in the inner liner groove 17, 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 which is located below the rear window 10 and which is provided in the middle of the reinforcing liner 19, and the insertion holes 2 are provided at the opposite ends of the hook 20.
0A and 20A are formed. Then, as shown in FIG. 11, a part of the reinforcing liner 19 engaged with the hook 20 is partially projected 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 shown in FIG.
The reinforcing 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 constructed as described above, when the rear window 10 is used as an emergency exit for emergencies,
The 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 placing the glass plate 18 in the cab box. Press from inside 8 to outside. Thereby, the glass plate 18
Can be reliably removed from the window frame seal 14, and the operator can escape to the outside of the cabin 7 from the rear surface portion 8C side of the cab box 8 through the window frame opening 13.

[0019]

As described above, in the prior art, the inner liner groove 1 is provided between the window frame opening 13 formed in the rear surface portion 8C of the cab box 8 and the glass plate 18.
7 is provided with a window frame seal 14, 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, thereby making the rear window 10 emergency. It is constructed so that it can be used as an emergency exit for when to escape.

However, since the inner liner groove 17 for assisting the deformation of the window frame seal 14 when the glass plate 18 is attached to the window frame seal 14 is provided inside the cab box 8, it is assembled. Alternatively, the operation of mounting the glass plate 18 on the window frame seal 14 at the time of maintenance is performed by the cab box 8 in which the driver's seat, operation equipment, etc. are accommodated
The work must be performed from the inside of the machine in a narrow work space, and there is a problem that the workability is significantly 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 that also serves as an emergency exit for an emergency, and its workability is greatly improved. It is an object of the present invention to provide a cabin for a construction machine that can be improved.

Another object of the present invention is to allow the glass plate to be attached relatively easily to the window frame opening of the cab box from the outside, and to firmly position the glass plate by the window frame seal. The purpose is to provide a cabin for construction machinery.

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

[0024]

In order to solve the above 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 the cab box. The present invention is applied to a cabin for a construction machine, which is mounted in an opening and has a window frame seal for positioning a glass plate in the window frame opening.

In the invention according to claim 1, the window frame seal has an inner liner groove formed along the length direction of the window frame seal so as to open in the cab box, and 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.

According to the second aspect of the present invention, the window frame seal is fitted with reinforcing liners in the inner liner groove and the outer liner groove with a tightening margin.
It is desirable that the glass plate is 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 has the window. An outer peripheral side window frame mounting groove to be mounted in the frame opening and an inner peripheral side glass plate mounting groove to be mounted to the glass plate are provided, and the inside of the cab box is provided between the respective mounting grooves. It is preferable that the inner liner groove and the outer liner groove are located outside and integrally formed.

According to a fourth aspect of the present invention, a reinforcing liner is fitted in the inner liner groove of the window frame seal before the window frame seal is attached to the window frame opening of the cab box. It is desirable to attach a pull ring for attaching and detaching the reinforcing liner to the reinforcing liner at an intermediate portion thereof.

Further, as in the invention according to claim 5, in the outer liner groove of the window frame seal, after the glass plate is mounted from the outside of the cab box into the glass plate mounting groove of the window frame seal. It is preferable to fit the reinforcing liner.

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

[0031]

With the above structure, 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 as the outer liner groove is deformed. It can be deformed, and 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 from the inside and the outside of the cab box into the inner liner groove and the outer liner groove of the window frame seal to increase the rigidity of the window frame seal, thereby making the glass plate firm. Can be positioned. In this case, a reinforcing liner may be fitted in advance in the inner liner groove of the window frame seal.

By integrally molding 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 reliably performed by a relatively simple structure.

Furthermore, by providing a pull ring for removing the reinforcing liner in the middle of the reinforcing liner fitted in the inner liner groove of the window frame seal, the reinforcing liner can be easily removed from the window frame seal. The glass plate can be reliably 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 wide working space can be secured outside the cab box.

Further, by providing window frame openings on the front surface, rear surface and left and right side surfaces of the cab box, it is possible to appropriately select an optimum location as an emergency exit for an emergency.

[0037]

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

In the figure, reference numeral 31 denotes a cabin according to the present embodiment. The cabin 31 is similar to the cabin 7 described in the prior art, and a cab box 8 and a window frame opening on the rear surface portion 8C of the cab box 8. A window frame seal 3 described later for positioning the glass plate 18 in the window frame opening 13 although the rear window 10 including the portion 13 and the glass plate 18 is provided.
The configurations of 2 are different.

32 is the window frame opening 1 of the cab box 8.
3 shows a window frame seal interposed between the glass plate 18 and the glass plate 18 over the entire circumference thereof, and the window frame seal 32 positions the glass plate 18 in the window frame opening 13. As shown in the enlarged view of FIG. 2, the window frame seal 32 includes the window frame opening 1
3, an outer peripheral side window frame mounting groove 33 mounted on the peripheral edge of the glass plate 18, an inner peripheral side glass plate mounting groove 34 on 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 circumference of 32, the inner liner groove 35 has the same cross-sectional shape as the inner liner groove 35 and is opened to the outside of the cab box 8 and formed over the entire circumference of the window frame seal 32. It has an outer liner groove 36 and is integrally formed of 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 abuts, and a pair of side wall portions 34B, 34B with which the peripheral edge portion of the glass plate 18 abuts. Further, the inner liner groove 35 has a fitting recess 35A having an arcuate cross-sectional shape, 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. The reinforcing liners 37 and 38 are substantially the same as those of the window frame seal 32, respectively. The elastic resin material such as rubber is formed into a string shape with a length extending over the entire circumference. Further, the reinforcing liners 37 and 38 are formed with a cross-sectional shape substantially equal to the inner liner groove 35 and the outer liner groove 36 of the window frame seal 32, respectively. It has a fitting convex portion 38A that fits into the concave portion 36A.

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

The inner liner groove 35 of the window frame seal 32 is also included.
A U-shaped hook 20 is provided in the middle of the reinforcing liner 37 fitted on the hook 2 as in the conventional technique.
Insertion holes 20A formed on both end sides of 0, which face each other,
A pull ring 21 is attached to 20A. Then, similarly to the conventional technique, the pull ring 21 is pulled toward the inside of the cab box 8 to remove the window frame seal 32.
The reinforcing liner 37 can be removed from the inner liner groove 35 of the.

According to this embodiment constructed as described above, when attaching the glass plate 18 to the window frame opening 13 provided in the rear surface portion 8C of the cab box 8, as shown in FIG. With the reinforcing liner 37 previously fitted in the inner liner groove 35, the window frame mounting groove 33 of the window frame seal 32 is mounted on the peripheral edge of the window frame opening 13.

Next, as shown in FIG. 4, the window frame seal 32
The side wall portion 34B of the glass plate mounting groove 34 formed in the above is bent to the outside of the cab box 8, and the glass plate 18 is mounted from the outside of the cab box 8 into the glass plate mounting groove 34 of the window frame seal 32. After that, as shown in FIG. 5, the outer liner groove 36 of the window frame seal 32 to which the glass plate 18 is attached is
Then, the reinforcing liner 38 is fitted from the outside of the cab box 8.

As a result, as shown in FIG. 6, the 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, and the glass is inserted into the window frame opening 13. The plate 18 can be firmly positioned.

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

However, in this embodiment, the window frame opening 13 is formed.
An inner liner groove 35 and an outer liner groove 36 are formed in a window frame seal 32 mounted on the inner side liner groove 35 and the outer side liner groove 36, respectively.
Since the glass plate 18 is positioned with respect to the window frame opening 13 by fitting the window frame 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
Since 8 can be attached from the outside of the cab box 8, a wide working space can be secured outside the cab box 8 at the time of assembly or maintenance, and workability can be significantly improved. it can.

Moreover, the rear window 10 constructed as described above.
When using as an emergency exit for emergency use, an operator pulls the pull ring 21 inside the cab box 8 in the same manner as in the prior art, and the inner liner groove 35 of the window frame seal 32 is pulled.
By removing the reinforcing liner 37 from the window frame 32, 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 quickly operate the window frame. Cab box 8 through the opening 13 for
It is possible to escape to the outside of the cabin 31 from the rear surface portion 8C side.

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

[0052]

As described in detail above, according to the first aspect of the invention, with the window frame seal attached to the window frame opening of the cab box, the inner peripheral side of the window frame seal is provided with the outer liner groove. Since it can be easily deformed to the outside of the cab box due to deformation, 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 wide working space, and during assembly or maintenance. Workability such as time can be significantly improved.

According to the second aspect of the present invention, the window line opening is formed by fitting the reinforcing liners from the inside and the outside of the cab box to the inside liner groove and the outside liner groove of the window frame seal, respectively. The glass plate can be firmly positioned with respect to the portion.

According to the third aspect of the present invention, the window frame seal is formed integrally with the window frame mounting groove, the glass plate mounting groove, the inner liner groove and the outer liner groove. The glass plate can be attached to and detached from the opening by appropriately selecting from outside or inside of the cab box.

Further, according to the invention of claim 4, 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 a simple operation is possible. 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, in the event of an emergency, the operator can quickly remove the glass plate from the cabin through the window frame opening of the cab box. You can escape.

According to the invention of claim 5, the glass plate is attached to the window frame seal from the outside of the cab box, so that a wide working space is secured outside the cab box at the time of assembly or maintenance. It is possible to improve the workability.

According to the sixth aspect of the present invention, by providing the window frame openings on the front surface portion, the rear surface portion and the left and right side surface portions of the cab box, it is an optimum place for an emergency escape exit in an emergency. Can be appropriately selected according to the type of construction machine and the like.

[Brief description of drawings]

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

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

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

FIG. 4 is a vertical cross-sectional view showing a process of mounting a glass plate on a window frame seal according to the embodiment of the present invention.

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

FIG. 6 is a vertical cross-sectional view showing a state where the glass plate is positioned in the window frame opening by the window frame seal according to the embodiment of the present invention.

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

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

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

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

11 is a transverse cross-sectional view taken along the line XI-XI in FIG.

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

[Explanation of symbols]

 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 Grooves 37, 38 Reinforcing liner

Claims (6)

[Claims] 1. A cab box provided on a frame of a construction machine, in which an opening for a window frame is formed, and a cab box attached to the opening for the window frame of the cab box, and a glass plate in the opening for the window frame. In a construction machine cabin comprising a window frame seal for positioning, the window frame seal has an inner liner groove formed along the length direction of the window frame seal so as to open in the cab box. A cabin for a construction machine, comprising: 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 window frame seal according to claim 1, wherein the glass plate is positioned by fitting a reinforcing liner to each of the inner liner groove and the outer liner groove with a tightening margin. 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. Side window frame mounting groove and an inner peripheral side glass plate mounting groove to be mounted on the glass plate are provided, and the inner liner is located between the mounting grooves inside and outside the cab box. The cabin for a construction machine according to claim 1, wherein the groove and the outer liner groove are integrally molded. 4. A reinforcing liner is fitted in advance in the inner liner groove of the window frame seal before the window frame seal is attached to the window frame opening of the cab box. The construction machine cabin according to claim 1, 2 or 3, wherein a pull ring for detaching and attaching the reinforcing liner is provided at an intermediate portion thereof. 5. The reinforcing liner is fitted into the outer liner groove of the window frame seal after the glass plate is fitted into the glass plate fitting groove of the window frame seal from the outside of the cab box. The cabin for construction machinery according to claim 2, 3 or 4, wherein: 6. The construction machine according to claim 1, wherein the cab box has window frame openings formed in the front surface portion, the rear surface portion, and the left and right side surface portions, respectively. cabin.