JP2001081809A - Revolving working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an operating space from being damaged by a post member used as a sun shade strut or a roll-over protective structure, and to prevent a radius of revolution of a revolving structure from being increased by the existence of the post member. SOLUTION: A revolving structure 4 is provided to freely revolve round the vertical axis P1 on a traveling gear 1, the revolving locus X drawn by the rear part of the revolving structure 4 substantially falls in the lateral width of the traveling gear 3, the width between the right and left side surfaces 4A of the revolving structure 4 is formed to be smaller than the diameter of the revolving locus X, and post members 41 are erected on the right and left side surfaces 4A of the revolving structure 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A conventional turning work machine is disclosed in, for example, Japanese Patent Application Laid-Open No. H11-43966. This turning work machine includes a traveling device having a pair of left and right crawler traveling bodies, a swivel provided on the traveling device so as to be rotatable around a vertical axis, and a left and right swing at a front end of the swivel. It is mainly constituted by a freely provided excavator, and further, on the swivel table, a hood covering equipment such as an engine is mounted,
A driver's seat is mounted on the hood, and a sunshade support that covers above the driver's seat is erected on the left and right hoods of the driver's seat.

[0003] Further, this turning work machine is of a so-called small backward turning type, and a turning locus (maximum turning locus) drawn by a rear end portion of the turning machine body is set within the lateral width of the traveling device. Was configured.

[0004]

The turning work machine of the small swinging rear type has a revolving body formed as small as possible in order to accommodate a turning locus within the width of the traveling device. Along with this, the space on the upper surface of the hood has also become smaller.
Therefore, when the driver's seat and the support are provided on the hood as in the related art, the support is disposed near the driver's seat, which causes a disadvantage that the operation space is narrowed. In addition, it is possible to provide the sunshade support column with a function as a ropes by surrounding the driver's seat left, right, and above, but in this case, since the support post is disposed near the left and right sides of the driver's seat, However, there was a problem that the protected area became narrow.

The present invention has been made in view of such circumstances, and by providing a pillar member used as a sunshade support or a drop on the side surface of a revolving structure, an operating space, a protected area as a drop, and the like are provided. While ensuring that
By preventing the turning radius from increasing by providing a column member,
An object of the present invention is to enable the turning performance of a turning work machine to be maintained satisfactorily.

[0006]

The present invention employs the following technical means to achieve the above object. That is, in the turning work machine according to the present invention, the revolving unit 4 is provided on the traveling device 1 so as to be revolvable around the vertical axis P1. 3 so that the width between the left and right side surfaces 4A of the revolving unit 4 is smaller than the diameter of the revolving trajectory X. It is characterized in that the member 41 is provided upright.

According to this, for example, the column member 41 used as a column of the sunshade 45 or the lops 40 is formed by the rotating body 4.
Since the column member 41 is provided upright on the left and right side surfaces 4A instead of the upper side, it is possible to prevent the operating space on the revolving unit 4 and the protection area as a rope from being impaired. Also, the width between the left and right side surfaces 4A of the revolving unit 4 is
Since the turning trajectory X is formed smaller than the diameter of the turning trajectory X, it is possible to prevent the column member 41 erected on the side surface 4A from protruding from the turning trajectory X as much as possible. Slewing performance can be maintained satisfactorily.

Further, according to the present invention, the left and right side surfaces 4A of the revolving unit 4 are formed on a plane extending in the front-rear direction of the revolving unit 4.
The column member 41 is attached to this flat portion. Thereby, the width between the left and right side surfaces 4A of the revolving unit 4 can be easily made smaller than the diameter of the revolving locus X, and the column member 41 can be easily attached via a flat attachment plate or the like. Become like

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a turning work machine 1 according to the present invention, which is exemplified by a backhoe. The turning work machine 1 is mounted on a traveling device 3 having a pair of left and right crawler traveling bodies 2 in a vertical direction ( A revolving unit 4 is provided so as to be revolvable around a revolving axis P1 (vertical direction), and a drilling device 5 is provided at the front end of the revolving unit 4. The revolving superstructure 4
Is a slewing bearing 25 provided at the center of the traveling device 3.
And is rotatably supported around a pivot axis P <b> 1 so as to be pivotally driven by a pivot motor (not shown) provided on a plate-like base frame 26 constituting the bottom of the revolving body 4. Has become.

At the rear end of the base frame 26, a counterweight 28 is provided to balance the weight with the excavator 5 on the front end side, and the left and right edges of the base frame 26 on the front side of the counterweight 28 are provided. Further, a cover frame 29 made of sheet metal is attached to the front side edge portion, and these form an outer shell of the revolving unit 4. At the front left side of the revolving superstructure 4, a control floor 8 provided with an operation unit 6, a step unit 7, and the like is provided. On the revolving structure 4, behind and on the right side of the control floor 8, hoods 12 and 13 that cover various devices such as an engine 9, a radiator 31, a hydraulic oil tank 10, and a fuel tank 11 are mounted. A driver's seat 14 is provided.

An entrance 15 to the driver's seat 14 is formed in front of the driver's seat 14 and on the left side of the revolving superstructure 4. The hoods 12 and 13 are made of sheet metal or hard resin, and are disposed on the left side of the revolving unit 4 behind the control floor 8 and cover the engine 9, the hydraulic oil tank 10, and the like. 12 and control floor 8
And a fixed bonnet 13 that covers the fuel tank 11 and the radiator.
The driver's seat 14 is mounted on the upper part, and the rear part is connected to the counterweight 28 so as to be openable and closable about a rotation axis P3 in the left-right direction.

The fixed bonnet 13 has an opening 3 on its upper surface.
3, and the opening 33 is closed by a cover body 34. By opening the cover body 34, fuel supply to the fuel tank 11, inspection of the radiator 31, and the like can be performed. The excavator 5 includes a swing bracket 17, a boom 18, an arm 19, and a bucket 20, and a support bracket 1 provided on the right front end of the revolving unit 4 (right side of the revolving axis P1).
6, the swing bracket 17 is supported so as to be able to swing right and left around a vertical swing axis P2. The swing bracket 17, boom 18, arm 19, and bucket 20 are driven to swing by a swing cylinder 21, a boom cylinder 22, an arm cylinder 23, and a bucket cylinder 24, respectively, which are hydraulic cylinders.

The rear side surface of the revolving unit 4 is formed in an arc surface centered on the revolving axis P1, and the turning locus X drawn by the rear part of the revolving unit 4 is within the left-right width and the front-rear width of the traveling device 3. It is designed to be stored. The left and right side surfaces 4A of the revolving unit 4 are formed in a plane along the front-rear direction with the revolving unit 4 facing forward, and the width between the left and right side surfaces 4A of the revolving unit 4 (the left and right width of the revolving unit 4). However, it is formed narrower than the diameter of the turning trajectory X drawn by the rear part of the turning body 4. The turning work machine 1 according to the present embodiment belongs to a small rear turning type in which the turning body 4 can turn without protruding from the vehicle width of the traveling device 3, and traveling and excavation work in a narrow place such as an urban area can be performed. It is easy to do.

The turning work machine 1 according to the present invention has a driver's seat 1
A rope (protection frame) 40 is provided so as to surround the left and right sides and the upper side of 4. This lops 4
0 is formed of a long steel material such as a square pipe,
A pair of left and right vertical frames (post members) arranged vertically
41 and a horizontal frame 42 connecting the upper ends of the left and right vertical frames 41 to form a two-post system having a front view portal type. At the lower end of the vertical frame 41, a flat mounting plate 43 is fixed, and the mounting plate 43 is mounted to the left and right side surfaces of the revolving unit 4 via fixing means 44 such as bolts. ing.

Here, since the left and right side surfaces 4A of the revolving unit 4 are formed in a plane extending in the front-rear direction as described above, a flat plate can be used as the mounting plate 43 of the vertical frame 41. Installation is also easy. The width between the left and right side surfaces 4A of the revolving superstructure 4 is
Since the rear portion of the revolving unit 4 is formed to have a diameter smaller than the diameter of the revolving locus X drawn, the vertical frame 41 is provided on the left and right side surfaces 4A of the revolving unit 4 so that the vertical frame 41 is It can be arranged in a state of being contained within the turning locus X so as not to protrude from the side.

Therefore, a substantial increase in the turning radius due to the presence of the vertical frame 41 can be prevented, and the turning trajectory X of the revolving unit 4 including the vertical frame 41 is contained within the left and right widths of the traveling device 3 to improve the turning performance. It can be maintained. On the other hand, since the vertical frame 41 is erected from the left and right side surfaces 4A of the revolving unit 4 instead of on the hoods 12 and 13, a wide driving space is secured around the driver's seat 14 and the operator's operation is performed. The protection can be prevented from being impaired, and the protected area by the ropes 40 can be secured widely.

Further, by providing the vertical frame 41 on the left and right side surfaces 4A of the revolving unit 4, the vertical frame 41 does not hinder the opening / closing operation of the opening / closing hood 12, and
2 can be opened and closed greatly. The lops 40 as described above are, as shown by a two-dot chain line in FIGS. 2 and 3,
The awning 45 can also be used as a support for the awning 45 that covers the upper part of the driver's seat 14. In this case, the awning 45 may be attached to the horizontal frame 42 via a mount, a fastener, or the like.

Further, the sunshade 45 may be attached by erecting the column member 41 dedicated to the sunshade 45 from the left and right side surfaces 4A of the revolving unit 4 instead of the column member 41 configured as the lops 40. The present invention is not limited to the above embodiment, and can be appropriately designed and changed. For example,
Loops are not limited to two-posters, but three-posters.
It can be a four-post type or the like.
In this case, the first member 1 may be erected from the side surface 4A of the rotating body 4.

In the illustrated example, the sunshade 45 is formed to be narrower than the ropes 40 so as to cover only the driver's seat 14. However, the sunshade 45 is formed wider than the length of the horizontal frame 42. Good. When the column member 41 is used as a column dedicated to the sunshade 45, the left and right side surfaces 4A of the revolving unit 4 are used.
The sunshade 45 may be supported in a cantilevered manner by erecting a single support from above. Further, the column member of the present invention may be used for purposes other than the above-described lopes and sunshade supports.

[0020]

As described above in detail, according to the present invention, since the pillar members used as the sunshade support posts and the lopes are provided on the left and right side surfaces of the revolving structure, the driving space and the protection area as the lopes are reduced. It can be secured. On the other hand, the width between the left and right side surfaces of the revolving structure is formed to be smaller than the diameter of the revolving locus at the rear part of the revolving structure, and the column members are provided on the left and right side surfaces. This can be prevented as much as possible, and the turning performance of the turning work machine can be favorably maintained.

[Brief description of the drawings]

FIG. 1 is a plan view of a swing body according to an embodiment of the present invention.

FIG. 2 is an overall side view of the turning work machine.

FIG. 3 is a perspective view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turning work machine 3 Traveling device 4 Revolving body 40 Loops 41 Vertical frame 42 Horizontal frame 45 Sunshade

Claims (4)

[Claims] 1. A revolving unit (4) is provided on a traveling device (3) so as to be revolvable about a vertical axis (P1), and a revolving locus (X) drawn by a rear portion of the revolving unit (4) is provided. And the width between the left and right side surfaces (4A) of the revolving unit (4) is made smaller than the diameter of the revolving locus (X). A turning work machine characterized in that a column member (41) is provided upright on the left and right side surfaces (4A) of the turning body (4). 2. The left and right side surfaces (4A) of the revolving structure (4).
Are formed on a plane along the front-rear direction of the revolving structure (4),
The turning machine according to claim 1, wherein the column member (41) is attached to the plane portion. 3. A sunshade (45) for covering a driver's seat (14) provided on a revolving unit (4), wherein the pillar (41) is a pillar. 3. The turning work machine according to 2. 4. The column member (41) is a component of a rope (40) surrounding a driver's seat (14) provided on a revolving body (4). Or 2
The turning work machine according to item 1.