JP3980911B2 - Swivel work machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a swivel work machine that houses a guard member for preventing cab damage.
[0002]
[Prior art]
In a hydraulic excavator as a swing type work machine, an upper swing body is turnably provided on a lower traveling body, and a cab and a front work device are mounted on the upper swing body.
[0003]
Since the cab has a glass window, and this glass window may be damaged by the impact of an external mischief, for the security of the hydraulic excavator, as shown in FIG. A foldable bandarism guard 66 as a guard member for preventing damage to the cab is installed along the outer surface of the glass window so as to cover from the outside so as to protect the glass window.
[0004]
The bandarism guard 66 is fixed by screwing left and right side portions of a plurality of guard plates 66b such as iron plates connected by a hinge 66a to a receiving member on the cab side with screws 66c.
[0005]
In the conventional standard machine, the vandalism guard 66 is stored in a storage space secured on the front side of the storage box, the front side of the radiator, and the oil cooler.
[0006]
[Problems to be solved by the invention]
However, in a model having a small space in the layout, such as a small turning machine having a small rear end radius of the upper turning body, it is difficult to secure a storage place where the above-described vandalism guard 66 can be stored.
[0007]
The present invention has been made in view of the above points, and an object of the present invention is to secure a storage place in which a guard member for preventing cab breakage can be stored in a swivel type work machine having a small space in layout.
[0008]
[Means for Solving the Problems]
The invention described in claim 1 includes a lower traveling body, an upper revolving body that is turnably provided on the lower traveling body, and a cab and a working device having a glass window mounted on the upper revolving body. The upper swing body is pivotally driven with respect to the lower traveling body, and is disposed in the radial direction from the pivot center of the swing frame toward one side, and has a hollow frame member having a hollow beam member having an outer end as an open end; A fender mounted around the swivel frame, an opening provided in the fender corresponding to the opening end of the beam member, a door body provided openably and closably in the opening, and a beam inside the door body and the guard member housing space portion provided in the hollow portion of the member, swing-type operation that and a foldable vandalism guards to protect the glass window of the cab prevent damage housed in the guard member accommodation space portion Machine and swivel flex The inner space of the hollow beam member in the outer end and an open end while being arranged radially toward the one side from the pivot center of the arm, the guard member housing space for housing the vandalism guard for cab prevent damage Since the opening and door are provided in the upper revolving body fender corresponding to the opening end of the beam member, it is possible to secure a storage space where the vandalism guard can be stored in a revolving type work machine with little space on the layout. In particular, the guard member storage space that effectively uses the inner space of the beam member of the swivel frame can secure a storage space for the folded bandarism guard even in a swivel work machine with a small space on the layout.
[0009]
The invention described in claim 2 is a small swirler in which the revolving-type work machine according to claim 1 is a small swirler with a small rear end radius of the upper revolving body, and has a small space in layout. In addition, by providing an opening and a door in the fender of the upper swing body, the inner space of the beam member of the swing frame that has not been used in the dead space can be effectively used as a guard member storage space, Space for storing vandalism guards to prevent cab damage can be secured.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS.
[0011]
FIG. 2 shows a hydraulic excavator as a swivel type work machine, which is driven through a sprocket (not shown) by a traveling hydraulic motor (not shown) with a pair of crawlers 11 mounted at the bottom. Thus, a lower traveling body 12 that moves the airframe is provided, and the upper revolving body 14 can turn on the lower traveling body 12 via a turning portion 13 that is driven by a turning hydraulic motor (not shown). Is provided.
[0012]
A front working device 15 for excavation as a working device is mounted on the front portion of the upper turning body 14, and a cab having a glass window 16 on the upper turning body 14 at one side of the front working device 15. The counterweight 18 for balancing the mass of the front work device 15 is mounted on the rear part of the upper swing body 14, and between the front work device 15 and the counterweight 18 is mounted. A power device 19 such as an engine is mounted on the upper swing body 14.
[0013]
The front working device 15 is supported by the upper swing body 14 so that the base end portion of the boom 21 can be pivoted in the vertical direction. A bucket 23 is pivotally supported at the tip of the arm 22 so as to be rotatable in the opening and closing direction.
[0014]
The boom 21 is rotated in the vertical direction by a boom hydraulic cylinder 24 provided between the upper swing body 14 and the arm 22 is moved inward and outward by an arm hydraulic cylinder 25 provided between the boom 21 and the boom 21. The bucket 23 is rotated in the opening / closing direction by a bucket hydraulic cylinder 26 and a linkage 27 provided between the bucket 23 and the arm 22.
[0015]
This hydraulic excavator is a small turning machine in which the rear end radius of the upper turning body 14 is small enough to allow the upper turning body 14 to turn on the lower traveling body 12.
[0016]
As shown in FIG. 3, the upper revolving structure 14 has a revolving frame 31 that is revolvingly driven with respect to the lower traveling structure 12, and the revolving frame 31 is a pair of welded to the center portion in the front-rear direction. A main frame plate 32 is provided.
[0017]
A boom fitting groove 33 for avoiding interference with the base end portion of the boom 21 is formed in a concave shape in the center of the front portion of the revolving frame 31 and is surrounded by the plate 34. Between the front portions of the pair of main frame plates 32 facing the boom fitting groove 33, a boom mounting bracket 35 for pivotally supporting the base end portion of the boom 21 and a base end portion of the boom hydraulic cylinder 24 are provided. And a cylinder mounting bracket 36 for pivotally supporting each other.
[0018]
A counterweight mount portion 37 for mounting a counterweight is welded to the rear portion of each main frame plate 32. Each of the counterweight mounts 37 is provided with a bolt insertion hole 38 for inserting a bolt (not shown) for fixing the counterweight 18.
[0019]
An engine mounting portion 39 for mounting the engine is welded to the pair of main frame plates 32 between the boom mounting bracket 35 and the counterweight mounting portion 37.
[0020]
A flat beam member 41 is welded to the revolving frame 31 on one side of the boom mounting bracket 35. The upper surface of the beam member 41 and the front end portion on one side of the boom fitting groove 33 of the revolving frame 31 are attached. A pair of cab mounts 42 and a pair of cab mounts 43 for mounting the cab 17 are welded to each other.
[0021]
Plates 44 and 45 are welded between the cab mount portions 42 and 42 on the beam member 41 and between the cab mount portions 43 and 43 on the front end portion, respectively. Piping / wiring regions 46 such as pilot hydraulic piping and electric wiring to be drawn are defined.
[0022]
On the revolving frame 31 opposite to the beam member 41, a hydraulic oil tank mounting portion 47 for mounting a hydraulic oil tank and a fuel tank mounting portion 48 for mounting a fuel tank are respectively installed and surrounded by a plate 49. .
[0023]
As shown in FIGS. 1 and 2, a fender 51 is mounted around the revolving frame 31, and an opening 52 is provided in the fender 51 at a position corresponding to the rear portion of the cab 17. One side portion of the door 53 as a body is attached by a hinge 54 so as to be freely opened and closed. The other side of the door 53 is provided with a key hole (not shown), and the door 53 closed flush with the fender 51 can be locked.
[0024]
As shown in FIG. 1, a storage space 55 is provided inside the door 53, and a tool box 56 as a accessory, a grease gun 57, a washer tank 58, and an attachment as a controller are provided in the storage space 55. The controller 59 is housed and is positioned and fixed by a fixing bracket (not shown).
[0025]
The grease gun 57 is disposed above the storage space 55, the tool box 56 and the washer tank 58 are disposed below the grease gun 57, and the attachment controller 59 is disposed on the beam member 41 at the back thereof. Yes.
[0026]
The tool box 56 is a tool box for storing various tools such as a spanner and a hammer, the grease gun 57 is a manual pump for filling the mechanical rubbing portion with grease, and the washer tank 58 is a glass window of the cab 17. This is a container for the cleaning liquid supplied to the wiper attached to 16, and can be stored in two types, large and small.
[0027]
The attachment controller 59 is separate from the main controller for controlling the main control valve of the hydraulic circuit, and when an attachment such as a hydraulic breaker or a hydraulic crusher is attached to the tip of the arm 22 instead of the bucket 23, It is a controller installed to control these attachment operations, and in order to check the indicator of this attachment controller 59, it is necessary to open the door 53.
[0028]
On the other hand, in the piping / wiring area 46 provided in most of the lower space of the cab 17, the pilot hydraulic piping 63 drawn out from the cab 17 through the cylindrical portion 62 attached to the cab platform 61, electrical wiring, etc. are concentrated. For this reason, the small article storage space 55 is not installed in the piping / wiring area 46.
[0029]
Further, the beam member 41 welded to one side portion of the swivel frame 31 is a hollow beam member having an open end 64 at the outer end, and the fender 51 is also associated with the open end 64 of the beam member 41. An opening 52 is provided, and the door 53 is openably and closably provided in the opening 52.
[0030]
A guard member storage space 65 is provided inside the door 53 and in the inner space of the beam member 41. In this guard member storage space 65, a vandalism guard 66 as a guard member for preventing cab breakage is provided. It is stored in a folded state.
[0031]
The vandalism guard 66 is a foldable shielding iron plate that is attached to the outside of the glass window 16 of the cab 17 and protects the glass window 16 from mischief and the like, and a plurality of different sizes are accommodated.
[0032]
Next, the function and effect of the illustrated embodiment will be described.
[0033]
When the bandarism guard 66 is required, the door 53 is opened with the unlocked key of the door 53. First, the tool box 56 located in the storage space 55 inside the door 53 is taken out, and the back beam is further removed. The vandalism guard 66 is taken out from the guard member storage space 65 in the member 41 and taken out.
[0034]
As shown in FIG. 4, the vandalism guard 66 is installed along the outer surface of the glass window so as to cover the glass window of the cab 17 from the outside. At that time, since the bandarism guard 66 is connected to a plurality of guard plates 66b such as iron plates by hinges 66a, the guard plates 66b are expanded and the left and right sides of the guard plates 66b are cabbed with screws 66c. It is fixed by screwing it to the receiving member on the side.
[0035]
When the bandarism guard 66 is not required, it is returned to the guard member storage space 65 in the beam member 41, and the door 53 is closed and locked.
[0036]
As described above, the opening 52 and the door 53 are provided in the fender 51 of the upper swing body 14 at a position corresponding to the rear portion of the cab 17, and the accessory storage space 55 is provided inside the door 53. In a swivel type work machine with a small amount of space, it is possible to secure a space for storing small items such as the tool box 56, the grease gun 57, the washer tank 58, and the attachment controller 59.
[0037]
Further, the inner space of the beam member 41 of the swivel frame 31 is used as a guard member storage space 65 for storing the vandalism guard 66, and is opened to the fender 51 of the upper swing body 14 corresponding to the opening end 64 of the beam member 41. Since the section 52 and the door 53 are provided, it is possible to secure a storage place in which the vandalism guard 66 can be stored in a swivel work machine with a small space in layout.
[0038]
In other words, by providing the opening 52 and the door 53 in the fender 51 of the upper swing body 14, the inner space of the beam member 41 of the swing frame 31 that has not been used in the dead space in the past can be used as the guard member storage space. Even a small swivel-type work machine that can be used effectively as a 65 and has a small space on the layout can secure a storage space for storing the folded vandalism guard 66. It is extremely effective use of space.
[0039]
The present invention can be applied not only to excavators for excavation by the bucket 23 but also to work machines in which a hydraulic breaker, a hydraulic crusher, and the like are mounted on the same machine body as the excavator.
[0040]
【The invention's effect】
According to the first aspect of the present invention, the hollow portion of the hollow beam member that is arranged in the radial direction from the turning center of the turning frame toward one side and that has the outer end as an open end is used for preventing cab breakage. In the swivel work machine with a small space on the layout, the guard member storage space for storing the bandarism guard is provided, and the opening and door are provided in the fender of the upper swing body corresponding to the opening end of the beam member. Folding banders can be secured even in swivel work machines with little space on the layout due to the guard member storage space that makes effective use of the inner space of the beam member of the swivel frame. The storage space for the rhythm guard can be secured.
[0041]
According to invention of Claim 2, even if it is a small turning machine with little space on a layout, conventionally, it was not utilized at all in a dead space by providing the opening part and the door body in the fender of the upper turning body. The inner space of the beam member of the swivel frame can be effectively used as a guard member storage space, and a space for storing a vandalism guard for preventing cab breakage can be secured.
[Brief description of the drawings]
FIG. 1A is a plan view of a main part showing an embodiment of an upper swing body of a swing type work machine according to the present invention, and FIG. 1B is a bander stored in a guard member storage space. It is a front view which shows the example of accommodation of a rhythm guard.
FIG. 2 is a perspective view of the same turning type work machine.
FIG. 3 is a perspective view showing a turning frame of the same turning type work machine.
4A is a front view showing an example of mounting a vandalism guard on a cab, and FIG. 4B is a side view thereof.
[Explanation of symbols]
12 Undercarriage
14 Upper swing body
15 Front working device as working device
16 glass windows
17 cab
31 Swivel frame
41 Beam members
51 Fender
52 opening
53 Door as a door
65 Guard member storage space
66 Bandarism guard as guard member

Claims (2)

A lower traveling body,
An upper swing body provided on the lower traveling body so as to be swingable; and
A cab having a glass window mounted on the upper swing body and a working device,
The upper swing body is
A swivel frame having a hollow beam member that is driven to swivel with respect to the lower traveling body and is arranged in a radial direction from the swivel center of the swivel frame toward one side, and having an outer end as an open end;
A fender mounted around the swivel frame;
An opening provided in the fender corresponding to the opening end of the beam member;
A door body that can be freely opened and closed at the opening;
A guard member storage space provided inside the door body and in the inner space of the beam member;
Foldable vandalism guards to protect the glass window of the guard member housing space portion cab damage preventing housed within the
Swing-type operation machine, characterized by comprising a. The revolving work machine according to claim 1, wherein the revolving end machine is a small revolving machine having a small rear end radius.

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