JP3535979B2 - Turning work machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing working machine such as a backhoe.

[0002]

2. Description of the Related Art Generally, in a swivel work machine of this type, a swivel base is provided on a traveling device via a swivel bearing so as to be rotatable about a vertical axis, and a cabin is mounted on the swivel base. A door is provided on the side surface of this cabin so as to be openable and closable. As the revolving type of the revolving work machine, the following three types are generally prepared in the same weight class.

(A) Ultra-small turn in which not only the rear side of the swivel but also the excavation device at the maximum rise does not protrude from the vehicle width of the traveling device (B) Standard type in which the rear side of the swivel protrudes from the vehicle width of the traveling device (C) Small rearward turn in which the rear side of the swivel does not extend beyond the vehicle width of the traveling device In the above three types, the swivel bases have different planar shapes, so the cabins mounted on them are also different for each type. Usually designed, a large cabin is used in the standard type with a relatively large swivel, and a small cabin is used in ultra-small swivels and small rear swivels with a relatively small swivel. .

[0004] However, if the cabins are designed to have different swing types, although the swing working machines are of almost the same weight class, the production control becomes complicated, and
The manufacturing cost of the swing working machine becomes high. Therefore, a proposal has already been made that simplifies production management and reduces manufacturing costs by mounting the same-shaped cabin on different types of swing working machines having different swing trajectories as they are and sharing the same (Japanese Patent Laid-Open No. Hei 10-1999) 9-88124).

[0005]

SUMMARY OF THE INVENTION In the above conventional technique,
Since the cabins of the same shape are mounted on different types of swivel work machines with different swivel trajectories as they are, in the case of swivel work machines having a relatively large swivel base (for example, standard type), the cabin is the plane of the swivel base. A swivel work machine that has a relatively small swivel base that can be stored within the range (for example,
In the case of a super-small turn or a small rear turn, there are cases where the same-shaped cabin cannot be accommodated within the plane range of the swivel base (see FIGS. 2 and 3 of JP-A-9-88124).

For this reason, in the above-mentioned conventional technique, in the case of an ultra-small turn or a small backward turn, the side surface of the cabin projects radially outward from the swivel base, and the turning locus is enlarged by the side surface of the cabin. However, there is a risk that the side surface of the cabin may collide with a foreign matter when the swivel base is swung, which causes a disadvantage that the significance of the swivel work machine as an ultra-small swivel or a small rear swivel is diminished.

Further, conventionally, it is necessary to separately attach a support bracket for supporting the projecting portion of the cabin projecting radially outward from the swivel base to the swivel base, which increases the material cost and the manufacturing cost. There is. In view of the above situation, the present invention makes the constituent members of the cabin as common as possible so that the side surface of the cabin does not jump out of the swivel base even when mounted on an ultra-small swivel or rear small swivel. Thus, it is an object to reduce material cost and manufacturing cost while preventing enlargement of the turning trajectory.

[0008]

[Means for Solving the Problems] In order to achieve the above object,
The present invention has taken the following technical means. That is, the present invention provides a cabin frame that constitutes the skeleton of the cabin,
A combination of a first skeleton frame that can be used as is for different types of revolving work machines with different revolving trajectories, and a second skeleton frame that is specially dimensioned for the revolving work machine so that the cabin does not protrude outside the revolving base. With this configuration, the cabin frame is partially shared with that of a different-type turning work machine.

The first skeleton frame is made up of three types of swivel work.
Parts that can be shared with industrial machines and shared with two types of swivel work machines
It is composed of a movable member,
The members that can be shared are the left and right front columns and the left and right rear columns.
Right rear strut, intermediate between left front strut and left rear strut
Struts, right rear strut and extending rearward from the upper end of the right front strut
Upper right end frame where the upper end of the
Left front upper frame that connects the ends together, rear from the upper end of the intermediate support
To the left and the upper end of the left rear strut is connected
The frame and the left that connects the lower ends of the left front strut and the middle strut
It is a front lower frame and can be shared with the above-mentioned two types of swivel work machines.
The member is a front upper frame connecting the upper ends of the left and right front columns,
Front lower end frame and upper right end frame that connect the lower ends of the left and right front columns
And the left upper rear frame that connects the rear ends of the left upper rear frame and the left
It is a rear lower frame that connects the lower ends of the right rear columns,
The second skeletal frame is from the middle part of the left rear strut and the middle strut to the rear
Left rear bottom frame that extends and is connected to the rear bottom frame, and right
Extends rearward from the middle of the front column and connects to the rear bottom frame
It is the right bottom frame.

In order to manufacture a cabin according to the present invention described above, the first frame and the second frame are prepared in advance, and these frame are connected to each other to form a cabin for the swivel work machine. A frame may be configured and each panel member such as a roof and a door may be attached to the cabin frame. In this case, according to the present invention, the cabin frame constituting the skeleton of the cabin has a first skeleton frame that can be used as it is for different types of revolving work machines having different revolving trajectories of the revolving base, and the cabin projects outside the revolving base. It is composed of a combination with a second skeleton frame that is specially dimensioned for the swivel work machine so that only the second skeleton frame is changed, so that the swivel work machine can be used without enlarging the swirl trajectory. A cabin frame that can be mounted can be configured.

That is, since the second skeleton frame is specially dimensioned for the swivel work machine so that the cabin does not protrude to the outside of the swivel base, the cabin constituted by the cabin frame having such a second skeleton frame. Even if is mounted on the swivel work machine, the side surface of the cabin does not pop out from the swivel base, and the swirl locus can be prevented from unnecessarily enlarged.

Further, since the cabin frame is used as a constituent member, the first skeleton frame set to the same shape and dimension that can be used as it is for different kinds of turning working machines having different turning trajectories is partially used. The material cost and the manufacturing cost of the swivel base can be reduced as compared with the case where the cabin frame is designed with only the skeletal frame having dimensions. By the way, in each of the above-mentioned ultra-small swing, standard type and rear small swing models, the plane range on which the cabin is to be mounted changes on the swivel base mainly due to the overlapping distance to the rear bonnet and the storage width to the side bonnet. The height of the cabin is not limited by the swivel base.

Therefore, in the above-mentioned present invention, the first skeleton frame which can be used as it is for different kinds of turning working machines can be set to a door frame in which a door can be opened and closed, and a column of a cabin frame. It can be set to a member.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The drawings show details of a back hoe illustrated as a swing working machine 1 adopting the present invention and a cabin mounted therein. 4 to 9 show different types of backhoes LA to LC having different swivel trajectories of the swivel adapted to the common concept of the present invention. These backhoes LA to LC have substantially the same weight classes 4 to 5 respectively. It is of ton class.

Of these, FIGS. 4 and 5 show a very small turn (hereinafter simply referred to as an “ultra-small turn”) in which not only the rear side of the swivel base 9 but also the excavation device 4 at the maximum ascent does not protrude from the vehicle width of the traveling device 2. The backhoe LA of FIG. 6 and 7 show a standard type backhoe LB in which the rear side of the swivel base 9 protrudes from the vehicle width of the traveling device 2 (hereinafter, simply referred to as "standard type").

Further, FIG. 8 and FIG. 9 show that the rear side surface of the swivel base 9 does not extend beyond the vehicle width of the traveling device 2 (hereinafter, referred to as a small rear turn).
It is simply called "small rear turn". ) Shows a backhoe LC. Note that, hereinafter, the traveling direction of the backhoes LA to LC (the left-right direction in FIG. 4) is referred to as the front-rear direction, and the lateral direction orthogonal to the front-rear direction (the paper penetration direction in FIG. 4) is referred to as the left-right direction.

4 to 9, various backhoes L
A to LC mainly include a traveling device 2, a revolving structure 3, and an excavation device 4. The traveling device 2 is a truck frame 5
It is configured by providing a pair of left and right crawler traveling bodies 6 having rubber crawler tracks on both left and right sides, and a crawler type traveling device in which these traveling bodies 6 are driven by a traveling motor (not shown) is adopted. ing. This traveling device 2
A dozer 7 is provided in the front part of the.

The revolving structure 3 is mounted on the revolving base 9 which is rotatably supported on the track frame 5 of the traveling device 2 via a revolving bearing 8 about a revolving axis in the vertical direction. Bonnets 10 and 11 for covering various devices, and a control device and a rear bonnet 1 arranged at the front of the swivel base 9.
And a cabin 12 formed in the shape of a hollow box that covers a seat (not shown) and the like provided above the vehicle.

As shown in FIGS. 5, 7 and 9, the rear bonnet 10 is disposed in the rear portion of the swivel base 9 so as to extend in the left-right direction, and is provided with a lid member 10A which can be opened and closed vertically. There is. Further, the side bonnet 11 is arranged on the right side portion of the swivel base 9 so as to extend in the front-rear direction, and the inspection window 11
A is provided on the upper surface portion. The cabin 12 is arranged from the left side of the swivel base 9 so that the front surface thereof coincides with the front end of the swivel base 9 and the rear surface thereof overlaps the rear bonnet 11. The left side surface of the cabin 12 is curved so as to substantially match the frame cover 14 of the swivel frame 13, and the right side surface thereof is formed as a flat surface extending in the front-rear direction so as not to interfere with the side bonnet 11. .

The swivel base 9 is constructed by covering an outer peripheral portion of a swivel frame 13 formed by combining various frame materials on a base plate with a frame cover 14, and a rear portion of the swivel base 9 is provided with a rear portion of the swivel frame 13. A counterweight 15 is provided which is fixed to the edge and balances the weight with the excavation device 4 and the like in front of the swivel base 9. Also,
The swivel base 9 is swiveled around a swivel axis X by a swivel motor (not shown) provided at the center of the swivel frame 13.

A standard type backhoe L shown in FIGS. 6 and 7.
In B, the rear side surface of the revolving structure 3 is formed in an arc shape,
The turning center X is set to be closer to the front of the turning base 9 so that the rear side surface of the running device 2 extends beyond the vehicle width. On the other hand, in the backhoe LC for a small rearward turn shown in FIGS. 8 and 9, the turning center X of the turning base 9 is set so that the arc-shaped rear side surface of the turning body 3 does not protrude from the vehicle width of the traveling device 2. It is set in the center. That is, when the revolving unit 3 revolves, the revolving locus drawn by the rear surface of the revolving unit 3 falls within the width of the left and right crawler traveling units 6.

As shown in FIGS. 7 and 9, in the standard type and the rear small swing backhoes LB and LC, the swing structure 3 is used.
The left and right side surfaces of the revolving structure 3 are formed in a plane along the front-rear direction with the revolving structure 3 facing forward, and the distance between the left and right side faces is formed to be narrower than the diameter of the revolving circle drawn by the rear surface of the revolving structure 3. Has been done. Further, in the same state, the front surface of the revolving structure 3 is formed into a flat surface along the left-right direction.

Further, in the standard type and the small rearward turning hoe LB, LC, a pair of upper and lower support brackets 17 for supporting the excavator 4 project from the right side of the front surface of the turning base 9. A swing bracket 18 is pivotally attached to the support bracket 17 via a support shaft so as to be swingable left and right around the vertical axis. The swing bracket 18 is moved to the left and right by a swing cylinder (not shown) provided inside the swivel base 9. Is swung in the direction.

This excavator 4 has a boom 2 whose base is pivotally attached to a swing bracket 18 so as to be swingable about left and right axes.
0, a vertical movement arm 21 pivotally attached to the tip end side of the boom 20 so as to be vertically swingable, and a bucket 22 attached to the tip end side of the vertical movement arm 21 so as to be freely squeezed and dumped. Although the vertical movement arm 21 and the bucket 22 are omitted in FIGS. 6 and 8, they are shown in FIG. 4, which is a case of a very small turn.

The boom 20 includes a boom cylinder 23 provided between the swing bracket 18 and a midway portion of the boom 20.
The vertical movement arm 21 is swung by the arm cylinder 24 provided between the midway portion of the boom 20 and the base portion of the vertical movement arm 21, and the bucket 22 is rotated by the base portion of the vertical movement arm 21 and the bucket 22. It is squeezed and dumped by the bucket cylinder 25 provided between the mounting cylinder and the mounting link.

On the other hand, in the ultra-small turning backhoe LA shown in FIGS. 4 and 5, the arc-shaped rear side surface of the turning body 3 is the traveling device 2.
The turning center X is set in the central portion of the turning base 9 so as not to protrude from the vehicle width of the excavator 4 at the maximum ascent.
The excavator 4 so that it does not protrude from the vehicle width of the traveling device 2.
The base ends of the above are pivotally mounted between a pair of left and right support walls 26 that are erected in the front-rear direction so as to face each other inside the swivel base 9.

Therefore, when the revolving unit 3 revolves, the revolving locus drawn by the rear surface of the revolving unit 3 is the left and right crawler traveling units 5.
The left and right widths of the crawler traveling body 5 and the turning locus drawn by the tip of the excavating device 4 in the most raised state are also within the left and right widths of the left and right crawler traveling bodies 5. Further, in the case of the backhoe LA that makes a very small turn, the boom 20 is pivotally mounted between the pair of left and right support walls 26 so that the boom 20 can move up and down.
It cannot swing to the left or right. Therefore, a parallel link mechanism 27 is provided at the tip end of the boom 20 to provide the same mechanism 27.
The vertical movement arm 21 is pivotally attached to the upper and lower sides of the bucket, and the parallel link mechanism 27 is swingably moved in the left and right directions by the offset cylinder 28 so that the left and right position of the bucket 22 can be changed.

As shown in FIGS. 4, 6 and 8, the cabin 12 is provided with an openable / closable door 41 pivotally mounted on an intermediate support column 49, which will be described later, at the forefront portion of the left side surface.
Rear side glass 42 at the rear of the left side surface located behind
Is equipped with. Further, a rear glass 43 is fitted to the rear side surface of the cabin 12, a windshield (not shown) is fitted to the front side surface, and a side glass (not shown) is fitted to the right side surface.

Next, with reference to FIGS. 1 to 3, commonization of the constituent members of the cabin 12 according to the present invention will be described. As shown in FIG. 2 and FIG. 3, the cabin 12 of the present embodiment is a three-dimensional frame-shaped cabin frame 44 that constitutes the framework thereof, and various panel members 68 to be assembled to the side frame portions of the cabin frame 44. And 75.

As shown in FIG. 1, the cabin frame 44 includes a pair of left and right front columns 45 and 46, a pair of left and right rear columns 47 and 48, and a left intermediate column 49. The upper ends of the left and right front columns 45, 46 are connected to each other by a front upper frame 50, and the lower ends thereof are connected to each other by a front lower frame 51. Further, the upper ends of the left front support column 45 and the upper ends of the intermediate support columns 49 are connected to each other by the left front upper end frame 52, and the lower ends of the left front support column 45 and the lower ends of the intermediate support columns 49 are connected to each other by the left front lower end frame 53. There is.

A left rear upper end frame 54 is connected to the upper end of the intermediate support column 49 by extending rearwardly therefrom, and a left rear lower end frame 55 is connected rearwardly from below the middle portion of the intermediate support column 49, The left rear upper end frame 54 and the rear end of the left rear lower end frame 55 are connected to each other by the left rear support column 47.
Further, an upper right end frame 56 extends rearwardly from the upper end of the right front support column 46 and is connected thereto, and a lower right right frame 57 extends rearwardly from a lower part of the middle part of the front support column 46 and is connected thereto,
The rear ends of the upper right end frame 56 and the lower right end frame 57 are connected to each other by the right rear support column 48.

Furthermore, the upper right end frame 56 and the rear end of the left rear upper end frame 54 are connected to each other by a rear upper end frame 58, and the right lower end frame 5
7 and the rear end of the left rear lower end frame 55 are connected to each other by a rear lower end frame 59. Further, the left front support column 45, the intermediate support column 49, the left front upper end frame 52, and the left front lower end frame 53 constitute a door frame 61 to which the door 41 is pivotably attached in an openable and closable manner, and the intermediate support column 49, the left rear support column 47, The rear side upper frame 54 and the left rear lower frame 55 form the rear side frame 6
2 are configured.

The left and right front columns 45, 46, the front upper frame 50 and the front lower frame 51 constitute a front frame 63, and the left and right rear columns 47, 48, the rear upper frame 58 and the rear lower frame 59. The rear frame 64 is configured. Further, the right front column 46, the right rear column 48, the upper right edge frame 56, and the lower right edge frame 57 constitute a right side frame 65, and the upper edge frames 50, 52, 54, 56, 58 constitute an upper surface frame 66. There is.

As shown in FIGS. 2 and 3, in order to construct the cabin 12 of this embodiment, the door 41 is fitted in the door frame 61, the rear side panel 68 is fitted in the rear side frame 62, and the front frame 63. The front panel 69 is fitted into the rear frame 64, and the rear panel 70 is fitted into the rear frame 64. An upper right panel 71 is fitted in the right side frame 65, a ceiling panel 72 having an air conditioner unit inside is fitted in the upper frame 66, and a lower right panel 73 is fixed below the right side frame 65. .

In the present embodiment, a pair of left and right slide rails 74 having a side view extending from the front panel 69 to the upper surface frame 66 are provided, and a windshield (not shown) is vertically movable on the slide rails 74. The windshield can be stored below the ceiling panel 72 along the L-shape of the slide rail 74. In the present embodiment, the left front upper end frame 52 and the left rear upper end frame 54, which form the left side surface of the cabin 12, are curved according to the side surface shape of the swivel base 9. The left slide rail 74 is fixed to the bracket 75.

1 to 3, the cabin frame 4
Among the frame members constituting 4 and the panel members fitted into the frame 44, the members having meshes are members common to all of the backhoes LA to LC of ultra-small turning, standard type and rear small turning. The hatched parts are the standard type and the rear small turning backhoes LB and LC.
The common members are shown.

In addition, the mesh and the non-shaded white members are special for the backhoes LA to LC of the ultra-small swing, standard type or rear small swing so that the cabin 12 does not project outward from the swivel base 9. Shows the dimensioned member. In addition, L attached to each member of FIGS.
The symbols A to LC indicate that the models listed horizontally are shared, and the models listed vertically are not shared and the dimensions are specially set.

For example, the cabin frame 44 shown in FIG.
In the left and right front columns 45, 46, right rear column 48, middle column 49, upper right edge frame 56, left front upper edge frame 52 , left rear upper edge
The frame 54 and the left front lower end frame 53 are common members (first skeleton frame) that are used as they are for the three models of backhoes LA to LC of ultra-small turning, standard type, and rear small turning. The reason is that, in each of the backhoes LA to LC of the ultra-small turn, the standard type, and the small rear turn, in order to fit the cabin 12 into the plane range of the turntable 9, the overlapping distance L1 with respect to the rear bonnet 10 in the front-back direction (FIG. 4). , FIG. 6 and FIG. 8) is effectively secured, and the storage width of the side bonnet 11 (see FIG. 5, FIG. 7 and FIG. 9) is effectively secured in the left-right direction. This is because there is no particular restriction from the swivel base 9.

Further, in the present embodiment, the door frame 61
Since the passenger compartment 12 is arranged on the front side of the cabin 12, the overlapping distance L1 with respect to the rear bonnet 10 can be changed by changing the front-rear length of the rear portion of the cabin 12, so that the door frame can be changed. As for the frame members 45, 49, 52 and 53 constituting 61, the common ones for the three models are adopted.

On the other hand, with respect to the left rear support 47 , the left rear lower end frame 55, and the right lower end frame 57, the cabin 12 is placed on the plane of the swivel base 9 in three types of backhoes LA to LC of ultra-small swing, standard type, and rear small swing. In order to fit within the range, it is necessary to appropriately respond to the change in the overlapping distance L1 with respect to the rear bonnet 10, so that a member (second skeleton frame) specially dimensioned is used in all three models.

Further, in the ultra-small turning backhoe LA, in order to avoid interference with the support wall 26 that supports the excavator 4, it is necessary to make the lateral dimension of the cabin 12 much smaller than the other two models. . On the other hand, in both the standard type and the rear small turning backhoes LB and LC, the excavation device 4 is pivotally mounted to the support bracket 17 in the front part of the swivel base 9,
Since there is no support wall 26 as in the case of the ultra-small turn, as shown in FIGS. 7 and 9, in the swivel base 9 between these two models, only the front-rear dimension changes and the left-right dimension changes. I haven't.

Therefore, in the present embodiment, the left and right members of the cabin 12, that is, the front upper end frame 50 and the front lower end frame 5 are provided.
1. The rear upper end frame 58 and the rear lower end frame 59 are shared between the standard type and the rear small turning backhoes LB and LC, and the ultrasmall turning backhoe LA is specially dimensioned for that purpose. . Therefore, in the sense that it can be shared between the standard type and the backhoe LB, LC for small rear swing, these members 50, 51, 58, 59 can also be used as they are for other swing working machines having different swing trajectories. Can be said to be

On the other hand, with respect to the panel members 68 to 75 constituting the cabin 12, as shown in FIGS. 2 and 3,
Only the door 41 is a member (first panel) that is commonly used by all three types of backhoes LA to LC of ultra-small swing, standard type and rear small swing. On the other hand, regarding the rear side panel 68, the rear panel 70, and the lower right panel 73, the cabin 12 is placed within the plane range of the swivel base 9 in three types of backhoes LA to LC of the ultra-small swing, the standard type, and the rear small swing. To accommodate it, it is necessary to appropriately respond to the change in the overlapping distance L1 with respect to the rear bonnet 10, so that a member (second panel) specially dimensioned is used in all three models.

For example, the lower edge 6 of the rear side panel 68
8A and the rear end edge 73A of the lower right panel 73 are used by being cut into an appropriate shape so as to follow the curved shape of the front surface of the rear bonnet 10. However, the rear side panel 68
The window frame of the rear side glass that fits into the opening is used for all three models.

On the other hand, as described above, in the ultra-small turning backhoe LA, the left and right dimensions of the cabin 12 need to be markedly smaller than those of the other two models, but the standard type and the rear small turning backhoes LB and LC are required. Then, only the front-rear dimension of the cabin 12 is changed, and it is not necessary to change the left-right dimension. Therefore, in the present embodiment, the front panel 69 and the ceiling panel 72, which have a lateral spread, and the cabin 12
Upper right panel 7 which is not directly related to the change in the left and right dimensions
1. The slide rail 74 and the mounting bracket 75 are shared between the standard type and the rear small turning backhoes LB and LC, and the ultrasmall turning backhoe LA is specially dimensioned for that purpose.

Therefore, these members 69, 71, 72, 74 and 75 are also used as they are for other revolving work machines having different revolving trajectories in the sense that they can be shared between the standard type and the backhoes LB and LC for small rearward revolving. It can be said that it is the first panel that can. According to the cabin 12 of the present embodiment described above, the second skeleton frame and the second panel are specially dimensioned for the swivel working machine so that the cabin 12 does not project to the outside of the swivel base 9. Even if the cabin 12 configured by using the second skeleton frame and the second panel is mounted on the swivel work machine, the side surface of the cabin 12 does not jump out of the swivel base, and the swirl locus is enlarged more than necessary. Can be prevented.

Further, as the constituent members of the cabin frame 44 and the side surface of the cabin 12, the first skeleton frame and the first panel, which are set to the same shape and dimension and can be used as they are for different kinds of turning working machines having different turning trajectories, are partially used. Therefore, the material cost and the manufacturing cost of the swivel base 9 can be reduced as compared with the case where the cabin 12 is designed only by the skeleton frames and panels having completely different shapes and sizes.

[0048]

As described above, according to the present invention,
The skeleton frame of the cabin frame that composes the cabin is made as common as possible so that the side surface of the cabin does not jump out of the swivel base, so material costs and manufacturing costs are reduced while preventing the swivel trajectory from becoming enlarged. can do.

[Brief description of drawings]

FIG. 1 is a perspective view of a cabin frame according to the present invention.

FIG. 2 is an assembled perspective view of the cabin according to the present invention.

FIG. 3 is an assembled perspective view of the cabin.

FIG. 4 is a left side view of an ultra-small turning backhoe equipped with the cabin of the present invention.

FIG. 5 is a plan view of the backhoe of the same small turn.

FIG. 6 is a left side view of a standard backhoe equipped with the cabin of the present invention.

FIG. 7 is a plan view of the standard type backhoe.

FIG. 8 is a left side view of a backhoe that makes a small rearward turn and is equipped with the cabin of the present invention.

FIG. 9 is a plan view of the backhoe that makes the same small rearward turn.

[Explanation of symbols]

1 swivel work machine LA Super-small turning backhoe LB standard backhoe LC Rear small turn backhoe 2 traveling devices 9 swivel base 12 cabins 41 door 44 cabin frame 45 Front support (left side) 46 Front support (right side) 48 Rear support (right side) 48 Middle support 61 door frame

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-316931 (JP, A) Actual Kaihei 1-123786 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02F 9/08

Claims (2)

(57) [Claims] 1. A swivel base (9) is provided on a traveling device (2) so as to be rotatable about a vertical axis, and a cabin (12) is mounted on the swivel base (9). A swivel work machine in which a door (41) is openably and closably provided on a side surface of (12), wherein a cabin frame (44) forming a framework of the cabin (12) is a different swivel work machine having a different swirl trajectory. The first skeleton frame that can be used as it is, and the cabin (1
2) comprises a combination with a second skeleton frame that is specially dimensioned for the swivel work implement so that it does not project outside of the swivel base (9), and the first skeleton frame comprises three types of swivel frames. Parts that can be shared with work machines
Consists of materials and members that can be shared by two types of swivel work machines
The members that can be shared by the three types of turning work machines are
Of the columns (45, 46) and the left and right rear columns (47, 48)
Right rear column (48), left front column (45) and left rear column (4)
7) middle pillar (49), front right pillar (4)
6) Extends rearward from the upper end of 6) and
Upper right end frame (56) to which the upper ends are connected, front left support (45)
And left front upper end frame connecting the upper ends of the intermediate support (49) with each other
(52), if it extends rearward from the upper end of the intermediate strut (49)
The left rear upper end frame to which the upper end sides of the left rear support columns (47) are connected
(54) and the left front strut (45) and the middle strut (49)
The left front lower frame (53) that connects the lower ends of the two is a member that can be shared by the two types of swivel work machines.
The front upper frame (5) that connects the upper ends of the columns (45, 46)
0), the lower ends of the left and right front columns (45, 46) are connected to each other.
Front lower frame (51), upper right frame (56) and left rear upper frame
(54) a rear upper end frame (58) for connecting the rear ends to each other, and
And the lower ends of the left and right rear columns (47, 48) are connected to each other.
A rear lower end frame (59), and the second skeleton frame includes a left rear support (47) and an intermediate support (4).
9) A rear lower end frame (59) that extends rearward from the middle part
The left rear lower frame (55) and the right front column (4) connected to
6) A rear lower end frame (59) that extends rearward from the middle part
A swing working machine characterized by being a right lower end frame (57) connected to the . 2. A front left strut (45), a middle strut (49),
A door frame (6) in which a door (41) is openably and closably provided by a left front upper end frame (52) and a left front lower end frame (53).
The swivel work machine according to claim 1, wherein 1) is configured .