JP2004074853A - Cab - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cab equipped with a front guard capable of securing required work space while being placed within a swivel radius of the body. <P>SOLUTION: The front guard 12 protecting a front window upper side glass 23 and a front window lower side glass 24 of a cab body 11 is provided corresponding to the front surface of the cab body 11 installed on the machine body of a swivel type work machine. The front guard 12 is provided with a guard main surface part 25 in slightly smaller width than the front surface of the cab body 11, and a guard side surface part 26 is bent and formed on the guard main surface part 25 within a swivel radius R of the body corresponding to a corner section between the front surface of the cab body 11 and side surface 16 of the side along the swivel radius R of the body. The guard main surface part 25 and the guard side surface part 26 of the front guard 12 are formed on a plurality of plane parts 25a, 25b, 26a, 26b. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cab provided with a front guard.
[0002]
[Prior art]
FIG. 7 shows a hydraulic shovel as a swing type working machine, in which an upper swing body 2 is provided so as to be able to swing with respect to a lower running body 1, and a cab 3 surrounding an operating space of an operator on the upper swing body 2. An engine and a power unit 4 containing a hydraulic source driven by the engine and the like are mounted, and further, a working device 5 for performing excavation work and the like is mounted.
[0003]
A front guard 6 for protecting a window glass as a front member of the cab 3 is provided on a front surface of the cab 3.
[0004]
As shown in FIGS. 8 and 9, the conventional front guard 6 is formed in a plane substantially parallel to the upper and lower window glasses 7 provided on the front surface of the cab 3. End portion 6a of the upper revolving unit 2 projects outside the vehicle turning radius R, which is the maximum turning radius.
[0005]
[Problems to be solved by the invention]
As shown in FIG. 8, since the cab 3 is installed at a position where the restrictions on the fuselage layout are full, the conventional flat front guard 6 is used to set the cab 3 within the turning radius R of the fuselage. If the guard width is reduced to accommodate the entirety, it is not possible to secure a guard width sufficient to cover the entire width of the front surface of the cab, and in the area a between the reduced front guard end 6b and the windowpane end 7a, the windowpane 7 must be removed. There is a problem that it cannot be covered by the front guard 6.
[0006]
Further, if the front guard 6 is brought close to the window glass 7 so as to be in close contact with the window glass 7, the flat front guard 6 can be accommodated within the body turning radius R. In such a case, the front guard 6 and the window glass 7 can be accommodated. There is a problem in that it is difficult to secure a necessary work space 8 for cleaning the window glass 7 and the like.
[0007]
In other words, if a necessary working space 8 is secured between the front guard 6 and the window glass 7 for cleaning or the like, the problem that the one end 6a of the flat front guard 6 protrudes from the body turning radius R will occur. There is.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cab having a front guard that can fit within a turning radius of a vehicle and that can secure a necessary work space.
[0009]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a cab body mounted on a body of a revolving type working machine and provided with a side surface via a front surface and a corner portion, and a front member of the cab body provided corresponding to the front surface of the cab body. Front guard that protects the cab, the front guard corresponds to the guard main surface part slightly narrower than the front of the cab body, and the corner between the front of the cab body and the side surface along the aircraft turning radius A cab having a guard side surface formed on one side of the guard main surface to be positioned within the vehicle turning radius, and a front guard formed on the guard main surface and the side within the vehicle turning radius. The guard side has a size enough to guard the entire front of the cab body, and the entire front guard can be accommodated within the turning radius of the fuselage. Even when making small turning operations required in the field, it is possible to work without worrying about contact of the front guard with obstacles, improve workability, and the structure of the guard side surface with respect to the main guard surface, A sufficient maintenance work space can be secured between the front member and the guard main surface.
[0010]
According to a second aspect of the present invention, in the cab of the first aspect, the cab further includes a reinforcing member provided from the guard main surface portion to the guard side surface portion, and the reinforcing member extends along a line of sight from an operator located in the cab body. It is formed by a plurality of reinforcing plates arranged in a plane direction.The reinforcing body provided from the guard main surface to the guard side can reinforce the strength reduction due to the formation of the guard side surface with respect to the guard main surface. It is possible to reinforce the strength of the portion between the main surface and the guard side, but it is not necessary to use a large reinforcing member that may obstruct the view, and the reinforcing body is arranged in a plane direction along the line of sight from the operator. By forming the reinforcing plate, the reinforcing body does not hinder the operator's field of view, and can secure the operator's front field of view.
[0011]
According to a third aspect of the present invention, in the cab according to the first or second aspect, a cleaning clearance provided between the front member of the cab body and the guard main surface of the front guard for inserting a hand during cleaning. The front guard fits within the turning radius of the cab, while the guard is provided with a guard side surface with respect to the guard main surface, but sufficient cleaning is performed between the front member of the cab body and the guard main surface. It is also possible to provide a clearance so that the front guard of the cab body can be easily cleaned without removing the front guard from the cab body.
[0012]
The invention described in claim 4 is the cab according to any one of claims 1 to 3, wherein the guard main surface portion and the guard side surface portion of the front guard are formed by a plurality of flat portions. In addition, since the guard side surface is formed of a plurality of flat portions instead of a curved shape, the manufacturability is good and the manufacturing cost can be reduced.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3, and another embodiment will be described in detail with reference to FIGS. 4 to 6.
[0014]
First, one embodiment shown in FIGS. 1 to 3 will be described.
[0015]
As shown in FIGS. 1 and 2, the cab 3 includes a cab body 11 mounted on an upper revolving unit 2 (FIG. 7) as a body of a revolving work machine such as a hydraulic shovel, and a cab 3 on a front surface of the cab body 11. And a front guard 12 provided correspondingly to protect a front member of the cab body 11.
[0016]
The cab body 11 has a ceiling window 15 openably and closably attached to a top plate portion 13 with a hinge 14, and a side surface 16 on a side along the body turning radius R is formed in an arc shape as shown in FIG. An elevating opening 17 is opened, and an arcuate sliding door 18 slidably provided along an arcuate side surface 16 is provided at the elevating opening 17 so as to be opened and closed by a handle 19 for opening and closing operation. I have.
[0017]
On the front side of the cab body 11, a front frame 21 which is formed in a bulging shape as shown in FIG. 2 is provided, and a light 22 is attached to an upper end of the front frame 21. Inside, a front window upper glass 23 and a front window lower glass 24 as front members of the cab body 11 are provided. The front window upper glass 23 is installed at an angle to the front window lower glass 24 at an angle.
[0018]
The front guard 12 protects the front window upper glass 23 and the front window lower glass 24 from scattered matters from the outside, and is a transparent plate member having high mechanical strength, for example, excellent in impact resistance and the like. It is integrally formed using a polycarbonate plate or the like.
[0019]
As shown in FIG. 1, the front guard 12 includes a guard main surface portion 25 provided with a width slightly smaller than the front surface of the cab body 11, and a front surface of the cab body 11 and a side surface 16 on the side along the body turning radius R. A guard side surface portion 26 is provided at one side of the guard main surface portion 25 corresponding to the corner between the bent portions and located within the vehicle turning radius R.
[0020]
A peripheral side plate portion 27 is integrally provided on the peripheral edge portion of the guard main surface portion 25 and the guard side surface portion 26 of the front guard 12. In the peripheral side plate portion 27, L-shaped mounting brackets 28 are respectively provided on the upper, middle, and lower portions of the guard main surface portion 25 side, and "L-shaped mounting brackets 28" are provided on the upper, middle, and lower portions of the guard side surface portion 26 side. The mounting brackets 29 in the form of "H" are provided, and these mounting brackets 28 and 29 are fixed to the front frame 21 of the cab body 11 by bolts or the like.
[0021]
The guard main surface portion 25 is formed by integrating a flat portion 25a corresponding to the front window upper glass 23 and a flat portion 25b corresponding to the front window lower glass 24 at an angle. The flat portion 26a corresponding to the front window upper glass 23 and the flat portion 26b corresponding to the front window lower glass 24 are integrated at an angle. The flat portions 25a and 26a corresponding to the front window upper glass 23 are slightly inclined, and the flat portions 25b and 26b corresponding to the front window lower glass 24 are installed vertically.
[0022]
That is, as shown in FIG. 3, the guard main surface portion 25 and the guard side surface portion 26 of the front guard 12 are formed by a plurality of flat portions 25a, 25b, 26a, 26b. As described above, since the guard main surface portion 25 and the guard side surface portion 26 are formed in a plurality of flat portions 25a, 25b, 26a, 26b instead of having a curved shape, the manufacturability is good and the manufacturing cost can be reduced.
[0023]
Further, as shown in FIG. 2, a hand is inserted between the front members of the cab body 11, that is, the front window upper glass 23 and the front window lower glass 24, and the guard main surface 25 of the front guard 12 at the time of cleaning. Cleaning clearance 31 is provided. This sufficient cleaning clearance 31 can be ensured by bending the guard side surface portion 26 with respect to the guard main surface portion 25 and storing the guard side surface portion 26 within the machine body turning radius R.
[0024]
Next, the operation and effect of the embodiment shown in FIGS. 1 to 3 will be described.
[0025]
The front guard 12 has a size such that the front surface of the cab body 11 is entirely guarded by a guard main surface portion 25 and a guard side surface portion 26 formed by bending the side surface within the body turning radius R. Can be contained within the body turning radius R.
[0026]
For this reason, even when the revolving type working machine performs a necessary small turning operation in a narrow site, it is possible to work without worrying about the contact of the front guard 12 with the obstacle, the workability can be improved, and the guard main surface 25 , A sufficient maintenance work space can be secured between the front surface member of the cab body 11 and the guard main surface portion 25.
[0027]
In particular, due to the bent structure of the guard side surface portion 26 with respect to the guard main surface portion 25, sufficient cleaning is performed between the front member of the cab body 11 and the guard main surface portion 25 while the front guard 12 fits within the vehicle turning radius R. It is also possible to provide a clearance 31 for use, and a space for easily cleaning the front members of the cab body 11, that is, the front window upper glass 23 and the front window lower glass 24, without removing the front guard 12 from the cab body 11. Can be secured.
[0028]
Further, as shown in FIG. 1, the range of the field of view that can be seen from the eye point 32 of the operator in the sitting posture in the cab body 11 through the front window upper glass 23 and the front window lower glass 24 is shown in FIG. 8 can be secured, and the mounting brackets 28 and 29 of the front guard 12 can be prevented from blocking the operator's view.
[0029]
Next, another embodiment shown in FIGS. 4 to 6 will be described. The same parts as those in the embodiment shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof may be omitted.
[0030]
As shown in FIGS. 4 and 5, the front member of the cab body 11, ie, the front window upper glass 23, corresponds to the front frame 21 of the cab body 11 mounted on the body of the swing type working machine, ie, the upper swing body. A front guard 12 for protecting the front window lower glass 24 is provided. As shown in FIG. 4, the front guard 12 includes a guard main surface portion 25 provided slightly smaller than the front surface of the cab body 11 and a cab body. A guard side surface portion 26 bent within the body turning radius R is provided on one side of the guard main surface portion 25 corresponding to a corner between the front surface of the vehicle 11 and the side surface 16 along the body turning radius R. The configuration provided is the same as that of the cab shown in FIGS.
[0031]
As shown in FIG. 5, the configuration in which a cleaning clearance 31 for inserting a hand at the time of cleaning is provided between the front surface member of the cab body 11 and the guard main surface portion 25 of the front guard 12 is also shown in FIGS. It is similar to the cab shown in FIG.
[0032]
The difference from the cab shown in FIGS. 1 and 2 is that, as shown in FIG. 6, a reinforcing body 33 is additionally provided as a whole from the guard main surface portion 25 to the guard side surface portion 26 of the front guard 12. is there.
[0033]
As shown in FIGS. 4 and 5, the reinforcing member 33 is formed by a plurality of reinforcing plates 35 and 36 arranged in a plane along a line of sight 34 emitted from an operator's eye point 32 located in the cab body 11. It was done.
[0034]
That is, the reinforcing body 33 includes a plurality of reinforcing plates 35 arranged vertically along the inner side surfaces of the guard main surface portion 25 and the guard side surface portion 26, the upper flat portions 25a, 26a, and the lower flat portions 25b, 26b, and a horizontal reinforcing plate 36 disposed integrally therewith. The vertical reinforcing plate 35 is connected to an operator's eye point in the cab body 11 as shown in FIG. By arranging these reinforcing plates 35 in the plane direction along the line of sight 34 from the side 32, the reinforcing plates 36 in the lateral direction can be moved by the operator's eye point 32 in the cab body 11 as shown in FIG. By arranging the reinforcing plate 36 in the plane direction along the line of sight 34 from above, the view of the operator is not obstructed as much as possible.
[0035]
Since the guard main surface portion 25 and the guard side surface portion 26 of the front guard 12 are formed by a plurality of flat portions 25a, 25b, 26a, and 26b, as shown in FIG. 36, the productivity is good, and the production cost can be reduced.
[0036]
Further, the field of view is secured in the bent portion of the guard side surface portion 26 with respect to the guard main surface portion 25 of the front guard 12 without using a reinforcing member.
[0037]
In this manner, the reinforcing body 33 provided from the guard main surface portion 25 to the guard side surface portion 26 can reinforce the strength reduction due to the formation of the guard side surface portion 26 with respect to the guard main surface portion 25 and increase the strength at the bent portion. It is not necessary to use a reinforcing member which can reinforce but may obstruct the view, and the reinforcing member 33 is formed by a plurality of reinforcing plates 35 and 36 arranged in a plane along the line of sight 34 from the operator. The reinforcing body 33 does not hinder the operator's field of view, and can ensure the operator's front field of view.
[0038]
The operation and effect of each of the embodiments are summarized as follows.
[0039]
(1) Since the front guard 12 is bent halfway so as to fit within the machine turning radius R of the hydraulic excavator, the turning operation in a narrow site required for a small turning machine is performed while paying attention to the contact of the front guard 12. It can be operated without having to do it, leading to improved workability.
[0040]
(2) The bent portion of the front guard 12 is liable to decrease in strength due to the bending, and if a reinforcing member for reinforcing the strength is used in the bent portion, the reinforcing member hinders the front view. The reinforcement of the bent portion is eliminated in order to secure it, and the reinforcing members, that is, the reinforcing plates 35 and 36 are dispersed throughout the front guard 12, and the reinforcing plates 35 and 36 do not obstruct the view of the operator. The plane directions of these reinforcing plates 35 and 36 are arranged in parallel with the line of sight 34. Since the structure of the mounting method of the reinforcing member is devised in this manner, the reinforcing member can be reinforced by a reinforcing member having such a shape that the reduction in strength due to bending does not hinder the operator's view.
[0041]
(3) In order to improve the cleaning property of the front window upper glass 23 and the front window lower glass 24, the operator can clean the front window upper glass 23 and the front window lower glass 24 by hand. In this structure, a sufficient cleaning clearance 31 is secured between the front window upper glass 23 and the front window lower glass 24 and the front guard 12. Thereby, the front window upper glass 23 and the front window lower glass 24 can be easily cleaned without removing the front guard 12 from the cab body 11.
[0042]
(4) The cab main body 11 has a curved cab design line, but the front guard 12 does not use a curved guard similar to the curved cab design line, and includes a plurality of flat portions 25a, 25b, 26a, 26b. Because of the configuration, the manufacturability is good and the cost can be suppressed.
[0043]
In short, the front guard 12 of the cab has a structure that fits within the turning radius R of the cab during normal work while securing a space for cleaning the front window glass of the cab main body 11 without removing it. Has a size and shape that can guard the entire front surface of the camera.
[0044]
In the embodiment, the guard side surface portion 26 is formed in one side of the guard main surface portion 25 in a bent shape, but may be formed in a curved shape.
[0045]
【The invention's effect】
According to the first aspect of the present invention, the front guard has a size such that the front surface of the cab body is entirely guarded by the guard main surface portion and the guard side surface portion formed on the side portion within the body turning radius, In addition, the entire front guard can be accommodated within the turning radius of the fuselage. Therefore, even when the turning type work machine performs a necessary small turning operation in a narrow site, it is not necessary to worry about contact of the front guard with an obstacle. Work can be performed without any trouble, the workability can be improved, and a sufficient maintenance work space can be secured between the front member of the cab body and the guard main surface due to the structure of the guard side surface relative to the guard main surface.
[0046]
According to the second aspect of the present invention, the reinforcement provided from the guard main surface portion to the guard side surface portion can reinforce the strength reduction due to the formation of the guard side surface portion with respect to the guard main surface portion. It is not necessary to use a large reinforcing member that can reinforce the strength between the parts but may obstruct the view, and the reinforcing body is formed by a plurality of reinforcing plates arranged in a plane direction along the line of sight from the operator, This reinforcement does not hinder the operator's field of view, and can ensure the operator's front field of view.
[0047]
According to the third aspect of the present invention, the structure in which the guard side surface portion is provided with respect to the guard main surface portion allows the front guard to fit within the turning radius of the fuselage, but between the front member of the cab body and the guard main surface portion. It is also possible to provide a sufficient cleaning clearance, and it is possible to secure a space for easily cleaning the front member of the cab body without removing the front guard from the cab body.
[0048]
According to the fourth aspect of the present invention, the guard main surface portion and the guard side surface portion are formed of a plurality of flat portions instead of curved surfaces, so that the manufacturability is good and the manufacturing cost can be suppressed.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a cab according to the present invention.
FIG. 2 is a side view of the cab.
FIG. 3 is a perspective view of the cab.
FIG. 4 is a plan view showing another embodiment of the cab according to the present invention.
FIG. 5 is a side view of the cab.
FIG. 6 is a perspective view of a reinforcing member used for a front guard of the cab.
FIG. 7 is a side view of a swing type working machine, that is, a hydraulic shovel.
FIG. 8 is a plan view showing an example of a conventional cab.
FIG. 9 is a side view of the conventional cab.
[Explanation of symbols]
2 Upper revolving superstructure 11 as a fuselage Cab body 12 Front guard 16 Side surface 23, 24 Front window upper glass and front window lower glass 25 as front member Guard main surface 26 Guard side surface 25a, 25b, 26a, 26b Plane 31 Cleaning clearance 33 Reinforcement 34 Line of sight 35, 36 Reinforcement plate R Body turning radius

Claims (4)

A cab body mounted on the body of the revolving work machine and provided with side surfaces through the front and corners;
With a front guard provided corresponding to the front of the cab body and protecting the front member of the cab body,
The front guard is
A guard main surface part provided slightly narrower than the front of the cab body,
A guard side surface portion formed within the fuselage turning radius is provided on one side of the guard main surface portion corresponding to a corner between the front surface of the cab body and the side surface along the fuselage turning radius. A cab that features. With a reinforcing body provided from the guard main surface to the guard side,
The cab according to claim 1, wherein the reinforcing member is formed of a plurality of reinforcing plates arranged in a plane along a line of sight from an operator located in the cab body. 3. The cab according to claim 1, further comprising a cleaning clearance provided between the front surface member of the cab body and the guard main surface of the front guard for inserting a hand during cleaning. The cab according to any one of claims 1 to 3, wherein the guard main surface portion and the guard side surface portion of the front guard are formed by a plurality of flat portions.

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