JPH0321518A - Cabin of construction machine - Google Patents

Abstract

PURPOSE:To have effective wind delivery over the whole surfaces of glass windows or wind shields by constructing a cabin frame in double structure with an inner and outer panel, and delivering the wind to the glass windows or wind shields through a passage formed between these panels. CONSTITUTION:A left and a right side plate, etc., of a box-shaped cabin frame 32 are constructed in double structure from an inner panel 33 and an outer panel 34 and installed on a floor plate 32A, and between these panels 33, 34 wind passages 35... in communications with one another are partitioned as a space extending in the cabin frame in the directions fore and aft and up and down. The discharge pipe 42 of a cooling/warming machine 41 is connected with these passages 35 through a connection part 43. Blowing holes 44... for delivery of the cold or warm air discharged into the passages 35... for the wind shields 36, 37 are formed in a protruded part 33B of each inner panel 33 situated ahead side glass windows 38. 40. This accomplishes effective wind delivery over the whole surfaces of the glass windows or wind shields.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a cabin for a construction machine installed as a driver's cab in a construction machine such as a hydraulic excavator, and in particular, the present invention relates to a cabin for a construction machine installed as a driver's cab in a construction machine such as a hydraulic excavator.
This invention relates to a cabin for construction machinery that supports the action of the construction machine. [Prior Art] FIGS. 5 and 6 show a hydraulic excavator as an example of a conventional construction machine. In the figure, 1 denotes an undercarriage, and 2 denotes an upper revolving body as a construction machine main body which is rotatably mounted on the undercarriage 1. The upper revolving body 2 includes a revolving frame 3 and a revolving frame 3. Cabin 4 as a driver's room installed above 3,
It is composed of a machine room 5 and a counterweight 6, and a working device 7 for excavating earth and sand is provided in the center of the front part of the rotating frame 3 so as to be movable up and down. Reference numeral 8 indicates a cabin frame constituting the main body of the cabin 4, and the cabin frame 8 is formed into a box-shaped cab box as shown in FIG. 6 by joining panels made of metal plates or the like. 9,to is a glass window provided on the front side of the cabin frame 8, 11,1
2.13 shows a side glass window provided on the right side of the cabin frame 8, and the side glass windows 11 to 13 are formed of transparent glass together with the front glass window 9,to to maximize the visibility of the driver 14. It is designed to be wider. Further, an opening/closing door 15 is provided on the left side of the cabin frame 8 as shown in FIG.
You can get on and off the train at your convenience. 16,1
6. . . . indicates the rubber seals that fixed the front glass windows 9, 10 and the side glass windows 11-13 to the cabin frame 8. 17 is a driver's seat located in the cabin 4 and provided on the floor plate 8A of the cabin frame 8; 18 and 19 are the driver's seats 1;
7 and located in the cabin frame 8, the operating levers 18, 19 are manually operated by the driver l4 and are used, for example, to operate the lower carriage l, to operate the upper stage 2. It is designed to perform swivel operations and operations such as raising and lowering the working device 7. ? Reference numeral 0 indicates an air-conditioning/heating machine as a ventilation means located on the rear side of the driver's seat 17 and provided on the floor plate 8A of the cabin frame 8. The air-conditioning/heating machine 20 has a built-in fan (not shown), etc. While drawing in outside air in the direction of arrow A from the suction port 2OA that opens downward, this outside air is cooled or heated, thereby allowing cold or warm air to be discharged from the discharge port (not shown). Further, .21 indicates a cold/warm air delivery section provided near the front end of the floorboard 8A of the cabin frame 8, and the delivery section 21 is connected to a conduit 22 disposed below the floorboard 8A. Air conditioning machine 20 via
The air conditioner 20 directs the cold and warm air discharged from the air conditioner 20 to the front glass window 9.10 of the cabin 4.
It is designed to be sent in the direction of arrow B. In the conventional technology configured in this way, the air conditioner 20 is operated to cool or heat the outside air while sucking in outside air in the direction of arrow A from the suction port 2OA, and the cold and warm air is sent from the delivery section 21 to the conduit 22. and into the cabin 4 in the direction of arrow B. As a result, the inside of the cabin 4 is cooled or heated, the temperature inside the cabin 4 is adjusted, and the front glass window 9.10 is heated by applying cold and warm air from the delivery section 2l to the front glass window 9.10. It is designed to provide a defroster (anti-fog) effect to prevent fogging due to temperature differences between inside and outside. [Problems to be Solved by the Invention] By the way, in the above-mentioned conventional technology, the cold and warm air sending section 2
1 is merely provided on the floor plate 8A of the cabin frame 8, so that the entire front glass window 9, 10 is cooled. Warm air cannot be applied, and the front glass window 9 in particular may become foggy due to the temperature difference between inside and outside, and the driver l4 inside the cabin 4 may have his or her view blocked by the fogging of the front glass window 9, making it difficult to drive. There is a problem that safety cannot be ensured. It is also possible to provide multiple ducts or the like in the cabin 4 that communicate with the outlet of the air conditioner 20, and blow cold and warm air from multiple directions from the tips of these ducts toward the front glass window 9.10. It is. However, in this case, since a plurality of ducts are arranged inside the cabin 4, the space inside the cabin 4 becomes even smaller due to the ducts.
This poses a problem in that it not only significantly impairs livability within the building but also increases costs. The present invention was made in view of the problems of the prior art described above.The present invention can blow air over a wide area such as the front glass window, reliably provide a defroster effect, and improve livability. The purpose is to provide a cabin for construction machinery that can secure the following conditions.

[Means to solve the problem]

The feature of the configuration adopted by the present invention in order to solve the above-mentioned problems is that the cabin frame has a double structure with inner and outer panels, and a space between the inner and outer panels extends at least in the longitudinal direction of the cabin frame. and a ventilation passage connected to the outlet of the ventilation means on the rear side, and a plurality of ventilation holes communicating with the ventilation passage and blowing air toward the glass window in the inner panel. ．．

[Effect]

With the above configuration, the cabin frame has a double structure with inner and outer panels, which increases the strength of the cabin frame and improves vibration isolation, etc., and also makes use of the space between each panel to create a ventilation passage This eliminates the need to separately install a ventilation duct inside the cabin. Embodiments Hereinafter, embodiments of the present invention will be described based on FIGS. 1 to 4, taking as an example the case where the invention is applied to a front glass window. In the embodiment, the same components as those of the prior art shown in FIGS. 5 and 6 are given the same reference numerals, and their explanations will be omitted. In the figure, 31 is a cabin provided in the upper revolving body 2, and 32
indicates a cabin frame constituting the main body of the cabin 31. Although the cabin frame 32 is formed as a box-shaped cab box almost the same as the cabin frame 8 described in the prior art, the cabin frame 32 is formed on the floor plate 32A. The left and right side panels provided on the inner panel 33
and an outer panel 34 to form a double structure (see FIGS. 2 and 3). Here, the inner panel 33 is joined to the substantially flat outer panel 34 by spot welding or the like at joint portions 33A, 33A, .
. . . and a side glass window 38, which will be described later, protrudes inward from each joint 33A in a substantially L-shaped or U-shaped cross section.
A protrusion 33B formed to surround ~40,
33B, . . . , and each protruding portion 33B has a ventilation passage 35, 35, . It is designed to define 36.37 is a front glass window provided on the front side of the cabin frame 32 via a rubber seal 16.16; 38.
39.40 indicates a side glass window provided on the right side of the cabin frame 32 via rubber seals 16, 16, . Side glass windows 11-13
and is formed almost similarly to the front glass window 9.10. Reference numeral 4l indicates an air-conditioning/heating machine as a ventilation means located on the rear side of the driver's seat 17 and provided on the floor plate 32A of the cabin frame 32, and the air-conditioning/heating machine 41 is configured almost the same as the air-conditioning/heating machine 20 described in the prior art. Then, outside air is sucked in from the suction port 41A in the direction of arrow A, and cooled into the discharge pipe 42. It is designed to emit warm air. here. The distal end side of the discharge pipe 42 is connected to the inside of the ventilation passage 35 between the inner panel 33 and the outer panel 34 through a connection part 43 on the rear side of the cabin frame 32 so as to communicate with the inside of the ventilation passage 35.
Inside 5, there is a vibrator 42 that discharges cold and warm air from the air conditioner/heater 4L.
It is designed to be discharged through. 44,44. ... is the cold discharged into the ventilation passage 35,
The ventilation holes 44 are formed in the protruding portions 33B of the inner panel 33 located in front of the side glass windows 38, 40, and are formed in the protrusion 33B of the inner panel 33 located in front of the side glass windows 38.40. The windows 36 and 37 are arranged in rows at an angle above and below. Here, each ventilation hole 4
4, as shown in FIG. 4, the protrusion 33B of the inner panel 33 is partially cut out, for example, in a substantially U-shape, and these cutouts 33C, 33C, . . . are folded diagonally into the cabin 4. The cutout portions 33C are formed by bending, and each cutout portion 33C directs cold and warm air sent out from each ventilation hole 44 to the front glass window 36.
．． 37 in the direction of arrow C. The cabin 31 for a hydraulic excavator according to this embodiment has the above-described configuration, and the interior of the cabin 31 is cooled or heated by the cold or warm air from the air-conditioner 41, and the temperature inside the cabin 31 is controlled using conventional technology. There is no particular difference between the two. However, in this embodiment, the cabin frame 32 has a double structure with an inner panel 33 and an outer panel 34, and the space defined between the protrusion 33B of the inner panel 33 and the outer panel 34 is used as the ventilation passage 35. Along with utilizing
Cool and warm air from the air conditioner 41 is discharged into the ventilation passage 35 through a discharge pipe 42, and a front glass window 36 is provided in the protrusion 33B of the inner panel 33, located on the front side of the ventilation passage 35. Since a plurality of ventilation holes 44, 44, . . . are formed to send cold and warm air in the direction of arrow C toward .37,
The following effects can be obtained. That is, since a plurality of rows of the ventilation holes 44 can be provided in the vertical direction of the inner panel 33 along the front glass window 36.37, cool and warm air can be applied to almost the entire surface of the front glass window 36.37. , it is possible to effectively provide a defroster (anti-fog) effect to the front glass windows 36 and 37, thereby reliably improving driving safety. Also, the cabin frame 32 is attached to the inner panel 33. Outer panel 34
Since it is formed into a double structure, the cabin frame 32
The area of the front glass windows 36, 37 and side glass windows 38 to 40 can be increased by increasing the strength of the front glass windows 36, 37, side glass windows 38 to 40, etc., and not only can the driver 14 be provided with as wide a field of view as possible, but also be able to reduce vibrations during work. It is possible to create a frame structure with sufficient durability against Since the space defined between the inner panel 33 and the outer panel 34 is utilized as the ventilation passage 35, there is no need to separately install multiple ventilation ducts in the cabin 3l as described in the prior art. This has various effects such as simplifying piping work such as ducts, reducing costs, and improving the comfort inside the cabin 3l. In addition, in the above embodiment, the case where the air conditioner/heater 41 is used as the blowing means has been described as an example, but instead of this, for example, a heating device or a cooling device equipped with a fan or the like may be used as the blowing means. . Further, these ventilation means do not necessarily have to be provided inside the cabin 31, but rather are installed inside the inner panel 33. Cold air or warm air may be discharged from the outside of the cabin 3l into the ventilation passage 35 between the outer panels 34 via a discharge vibrator or the like. Further, in the embodiment described above, the case where air is blown to the front glass window 36, 37 has been described as an example, but instead of this, it is possible to blow air to the side glass window 38, 39, 40 or the cabin frame 3.
Air may be blown to a rear glass window (not shown) on the second rear side, and a defroster effect can also be provided in this case. Furthermore, although the above embodiments have been described using a hydraulic excavator as an example, the present invention is not limited to hydraulic excavators.
For example, it can also be applied to cabins for construction machinery such as hydraulic cranes. [Effects of the Invention] As detailed above, according to the present invention, the cabin frame has a double structure with inner and outer panels, and air is blown to the glass window through the air passage formed between each panel. Because of this structure, air can be effectively blown over almost the entire surface of the glass window, and the glass window is completely covered with air. It can prevent fogging due to outside temperature, provide a reliable defroster effect, improve safety, simplify piping work such as ducts, reduce costs, etc. be effective.

[Brief explanation of drawings]

1 to 4 show embodiments of the present invention, in which FIG. 1 is a longitudinal sectional view of the cabin, FIG. 2 is an enlarged sectional view in the direction of arrow nn in FIG. Arrows III-II1 in Figure 1
An enlarged cross-sectional view in the direction shown in FIG. 4 is indicated by the arrow IV-I in FIG.
An enlarged sectional view in the V direction, FIGS. 5 and 6 show the prior art, FIG. 5 is an overall view of the hydraulic excavator, and FIG. 6 is an enlarged longitudinal sectional view of the cabin. 1... Lower traveling body, 2... Upper rotating body (construction machine main body) 3... Swivel frame, 31... Cabin, 3
2...Cabin frame, 32A...Floor plate, 33.
... Inner panel, 33A... Joint portion, 33B... Protruding portion, 34... Outer panel, 35... Ventilation passage, 3
6,37...Front glass window, 38,39.40...
Side glass window, 41...Air conditioner (ventilation means), 41
A...Suction port, 42...Discharge pipe, 44...Blower hole.

Claims (1)

[Claims] A box-shaped cabin frame provided on a construction machine body, a glass window provided on the cabin frame, and an air blower that sucks in outside air from an inlet and blows air into the cabin frame from an outlet. In the cabin for construction machinery, the cabin frame has a double structure with inner and outer panels, and a space between the inner and outer panels extends at least in the longitudinal direction of the cabin frame, A ventilation passage is formed on the rear side and connected to the outlet of the ventilation means, and a plurality of ventilation holes are formed in the inner panel to communicate with the ventilation passage and blow air toward the glass window. Cabin for construction machinery.