JP2930930B2 - Turning work vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a swivel frame in which a rear portion of an upper body structure having a seat, an engine, a radiator, a hydraulic pump and the like arranged on a turntable frame does not collide with an obstacle during turning. And a turning work vehicle such as a backhoe capable of performing an excavation work or the like without worrying about the rear.

[0002]

2. Description of the Related Art In a conventional turning work vehicle such as a backhoe, the technology of a standard type and an improved ultra-small turning type turning work vehicle is known. FIG. 4 is a plan view of a conventional standard type backhoe, FIG. 5 is a side view of an ultra-small swivel type backhoe in which a work machine A called a coffee cup type is folded over an upper body structure B and can be swiveled, and FIG. FIG. 7 is a plan view of the ultra-small turning type backhoe of FIG. 5, FIG. 7 is an exploded perspective view of an offset boom mechanism for enabling ultra-small turning, FIG.
FIG. 9 is an overall perspective view of a micro-swirl backhoe in which the engine 11 is arranged on the left and right sides of the left and right center lines M, FIG. 9 is a side view of the micro-swirl backhoe of FIG. 8, and FIG. FIG. 9 is a plan view of the ultra-small swivel type backhoe of FIG.

[0003] In the standard type backhoe shown in FIG.
At the rear of the upper body structure B mounted on the swivel frame,
Since the turning diameter centered on the turning center projects considerably rearward from the crawler type traveling device 22, when turning, the upper body structure B projects to the left and right positions like B 'and B ". There was a danger of colliding with the side walls and other obstacles on the road, so a micro-swirl backhoe was developed to solve the problems of the standard backhoe. There was a problem.

In the prior art of the ultra-small swivel type backhoe shown in FIGS. 5, 6 and 7, in order to make it possible to store a working machine within a swivel radius of the swivel frame 2 in a coffee cup shape, The work equipment fulcrum of the work equipment is located near the center of rotation, and the work equipment fulcrum is also high, so the center of gravity of the aircraft is high, the balance when traveling is poor, and walk-through is possible It was not possible to have a boarding position structure.

[0005] Further, in the ultra-small turning type backhoe,
In order to enable the digging of the side ditch, it is necessary to interpose an offset boom mechanism between the main boom 3 and the bucket arm 21 so that the tip of the main boom 3 can be offset right and left. However, there is a problem that the operating speed of the working machine needs to be reduced because the balance is poor. Further, when the offset boom is provided, there is a possibility that the bucket 4 may interfere with the canopy and enter the living space, and there is a problem that a mechanism for eliminating this danger becomes complicated.

Further, as shown in FIGS. 7, 8, and 9, the arm cylinder 19 requires a cylinder holder 19a.
Further, in order to offset the boom, the offset cylinder 50 needs to be on the right side and the parallel link 51 on the left side, and the offset boom 52 has to be configured. In this configuration, the offset boom 52 and the parallel link 51 are in a parallel state and are offset right and left.

As shown in FIG. 10, the seat 9 is conventionally arranged on the left side of the left and right center lines M, and the engine 11 is arranged so as to straddle over the center line M. Therefore, seat 9
, The position of the seat 9 is raised, and the work implement pivot 29 is also located immediately before the engine 11, so that the engine 11 and the hood 10
In order to avoid interference with the work machine A, the work machine A is located at a high position, and the entire work machine A has a structure with a high center of gravity.

Further, a standard type backhoe is known, for example, as disclosed in Japanese Utility Model Laid-Open No. 57-202461.
The ultra-small swivel type backhoe is, for example, an actual open flat 1-1643.
It is publicly known as disclosed in Japanese Patent Publication No. 37.

[0009]

SUMMARY OF THE INVENTION Conventionally, Japanese Utility Model Application
As shown in JP-A-202461, there is a so-called standard type backhoe, but it has the following problems.
Since the rear portion of the revolving frame above the traveling device protruded beyond the width of the traveling device during turning, the rear portion was likely to collide with an obstacle. In particular, when digging at the side of a wall, the aircraft is moved to the side of the wall to dig a gutter, so when turning to load earth and sand on a truck stopped on the opposite side of the wall, the rear part of the turning frame is And the revolving frame on the upper part of the traveling device could not be turned. Therefore, excavation work in a narrow place was impossible.

Therefore, in order to solve the problems of the standard type backhoe, an ultra-small turning type backhoe as disclosed in Japanese Utility Model Laid-Open No. 1-164337 has been developed. In the case of this ultra-small turning type backhoe, the turning frame at the top of the traveling device does not protrude from the width of the traveling device during turning, and therefore fits within the width. Therefore, work in a narrow place becomes possible. However, when digging a gutter, the ultra-small turning type backhoe can only operate the working machine in the vertical direction, so that the working machine is operated in the left-right direction, the upper part of the boom is composed of an offset boom, an arm cylinder, etc.
An offset boom mechanism is required. By providing this offset boom mechanism at the upper part of the boom, when excavating with a bucket at the tip of the arm by tilting the offset boom of the offset boom mechanism to the side groove sideways in the left-right direction when digging the side groove, There is a problem that the offset boom mechanism comes into contact with the portion and it is not possible to dig deeper than that. In addition, when digging ditches near the wall, after digging the dirt in the ditches, raising the work equipment and turning it up to transport this earth and sand to the truck bed, offset the boom of the work equipment when digging the ditches In this state, when the work machine is raised and erected in this state, the rear portion of the arm cylinder projects from the revolving frame from the offset boom mechanism at the eccentric position. When the turning frame is turned from this state, the rear part of the arm cylinder projects from the rear part of the turning frame.
The rear part of the arm cylinder protrudes from the width of the traveling device. Therefore, there is a problem that the arm cylinder comes into contact with the side wall and cannot turn. Further, since the offset boom mechanism exists above the boom constituting the working machine, the weight of the working machine increases. Therefore, when the work machine is extended forward, the work machine is heavy and the balance of the work vehicle is deteriorated. Further, when the working machine is raised and raised, the working machine is heavy, so that the position of the center of gravity of the working vehicle is increased and stability is deteriorated. For this reason, there was also a problem that work or running at a high speed was not possible.

In the ultra-small swivel type backhoe described in Japanese Utility Model Laid-Open Publication No. 1-164337, an engine, a radiator, and a hydraulic pump are disposed at a rear portion of a swivel frame provided on an upper swing body. . However, since the rear end portion of the upper revolving structure is not the maximum projecting portion, the engine, the radiator, and the hydraulic pump cannot be installed as far behind the revolving frame provided on the upper revolving structure as possible. Therefore, it is not possible to improve the front-rear balance between the working machine projecting to the front side of the ultra-small turning type backhoe and the engine installed in the rear part, so that stability during work is deteriorated and work efficiency is improved. Can not. Further, since the rear portion of the upper revolving structure is not formed in an arc shape in a plan view, the installation area of the engine or the like cannot be increased, so that a higher-output engine, a larger-capacity radiator, a hydraulic pump, etc. Cannot be installed. Ma
At the front end of the revolving frame, place the work machine horizontally and vertically.
When the work implement is pivoted in the direction
Tilt it back as far as possible when storing it folded
If it is possible to move, the front and rear of the machine when the work machine is stored
The length can be shortened. Therefore, the present invention provides
The front part of the pillow is inclined diagonally backward and work is performed.
The machine has a storage space.

[0012]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. In claim 1, a swivel frame is pivotally mounted on the traveling device via a swivel bearing, and a seat, an engine, a radiator, a hydraulic pump, and the like are arranged on the swivel frame to form an upper body structure. In a turning work vehicle configured and supported at the front end portion of the upper body structure through a work machine pivot body so that the work machine can be operated in the up-down direction and the left-right direction, at least a rear largest dimension portion of the upper body structure is provided. Plan the canopy roof within the width of the traveling device and covering the upper part of the seat.
The front portion is configured to be inclined obliquely rearward when viewed . In claim 2, a swivel frame is pivotally mounted on the traveling device via a swivel bearing, and a seat, an engine, a radiator, a hydraulic pump, and the like are arranged on the swivel frame to form an upper body structure. In a turning work vehicle configured and supported at the front end portion of the upper body structure through a work machine pivot body so that the work machine can be operated in the up-down direction and the left-right direction, at least a rear largest dimension portion of the upper body structure is provided. A canopy roof that is within the width of the traveling device, has a rear end portion of the upper body structure as a maximum projecting portion, and has a rear portion of the upper body structure formed in an arc shape in plan view, and further covers an upper portion of the seat. To
The right side of the front part is inclined obliquely rearward in plan view.
And retreated on the right side of the canopy roof rather than on the left side
It is a position .

[0013]

Next, an embodiment of the present invention will be described. FIG. 1 is an overall side view of the backhoe of the present invention,
2 is an overall plan view of the backhoe shown in FIG. 1, and FIG. 3 is a plan view showing an arrangement of each device on the upper portion of the swivel frame 2.

1 and 2, the overall construction of the turning work vehicle according to the present invention will be described. Although the embodiment shows the backhoe, other turning vehicles may be used. The backhoe includes a traveling vehicle body that travels by a crawler-type traveling device 22. Between the crawler-type traveling devices 22, an earth discharging plate 24 is supported by an earth discharging plate cylinder 28 so as to be rotatable up and down. . A turning table bearing 30 is disposed at the center of the crawler type traveling device 22, and a turning motor 6 is disposed at the center of the turning table bearing 30, and the center position of the turning motor 6 is set to the turning center O. Have been.

The swivel frame 2 is provided above the swivel bearing 30.
Is fixed. As shown in FIG. 3, the revolving base frame 2 is formed in a semicircular shape, and has a working machine fulcrum C at the front.
Are arranged, and the lower end of the work machine A is pivotally supported by the work machine pivot shaft 29. The work machine A has a main part constituted by a main boom 3, a bucket arm 21 and a bucket 4. The main boom 3 is vertically rotatable by a boom cylinder 18, and the bucket arm 21 is vertically moved by an arm cylinder 19. It is rotatable. The bucket 4 is pivotally supported by the tip of a bucket arm 21, and is pivoted by a bucket cylinder 20. The main boom 3 can be swung right and left by a swing cylinder 16 in order to make it possible to dig a side ditch. The swing cylinder 16 is disposed at a position opposite to the seat 9 and below the hydraulic oil tank 14 and the fuel tank 31, as shown in FIG.

On the swivel frame 2, a seat 9 and a canopy roof 23 are arranged on the left side, and a work machine A, a hydraulic oil tank 14 and a fuel tank 31 are arranged on the right side. ing. The hood 10 is formed in a half-moon shape, and the string portion is slanted, and is slanted in a plan view from the right end of the crawler traveling device 22 to the rear of the seat 9. . Further, the canopy support columns 26 and 27 of the canopy roof 23 are formed in a front and rear open leg shape, so that the canopy support columns 26 and 27 do not interfere with the movement of the operator from the left entrance / exit to the right walk-through entrance / exit D. The support columns 26 and 27 are arranged and configured. The canopy roof 23 is shown in FIG.
As shown in FIG.
It is configured to be inclined toward the rear. This allows you to work
When the machine is upright,
It is configured so that it can be stored. In this way, the working machine
By shortening the front and rear length in the state where
Work and storage.

An operation column 25 is disposed at the front of the seat 9 to operate the work machine A and to operate the crawler traveling device 2.
2 are provided. As shown in FIG. 2, a left entrance / exit E is disposed between the seat 9 and the operation column 25, and the left entrance / exit E communicates with a right walk-through entrance / exit D. It is configured to be able to get on and off even from the air. The control valve 5 is disposed below the left entrance E.
Further, as shown in FIG. 2, since the work machine A is arranged before the upper body right front end B1 of the upper body structure B, even if the main boom 3 itself is swung, there is no possibility of interference with the hood 10. The swing cylinder 16 can form a boom swing mechanism. A fuel tank 31 is disposed at a position where the main boom 3 is swung to the maximum, and a surplus space up to that point is configured as a walk-through doorway D. Therefore, the walk-through entrance D
Is closed by the rotated main boom 3 when digging a side ditch. That is, the walk-through entrance D and the swing space of the main boom 3 are also used.

Next, a description will be given with reference to FIG. The upper body structure B is formed in an arc shape, and the rear portion of the upper body structure B is located inside a circle that falls within the width of the crawler-type traveling device 22 when the upper body structure B turns around the turning center O. It is configured as follows. In addition, the engine 11 and the seat 9 are arranged at different positions on the left and right with the left and right center lines M interposed therebetween.
They are configured so that they do not overlap. The engine 11 is disposed obliquely as shown in a plan view, and a radiator 12 and an oil cooler 13 are disposed at the right end. A hydraulic pump 7 is provided on the left side of the engine 11, and a battery 8 is disposed above or below the hydraulic pump 7. Further, the engine 11, the radiator 12, and the hydraulic pump 7 are rearmost parts of the upper body structure B at the rear end of the upper body structure B behind the turning center,
The rear portion of the upper body structure B is arranged along an arcuate portion in plan view. A hydraulic oil tank 14 is disposed at a position in front of the engine 11, and a fuel tank 31 is disposed in front of the hydraulic oil tank 14.

The fuel tank 31 is disposed obliquely and has a long shape along the walk-through entrance D. The position of the fuel tank 31 is configured at the right end position of the left and right swing of the main boom 3. A work implement fulcrum C is formed at a position forward of the upper body right front end B1 of the upper body structure B. The work implement fulcrum C is formed by the work implement pivot 1 and the work implement pivot 29. It is configured. When the main boom 3 swings to the left, it swings to the position of the front handrail 17 in front of the operation column 25, and the front handrail 17 is disposed at a position retracted from the right front end B1 of the upper body. Therefore, the main boom 3 and the front handrail 17 do not interfere with each other.

The bonnet 10 is formed in a half-moon shape, and the string portion is formed diagonally. A fuel tank 31 is arranged along the oblique chord. A swivel table bearing 30 is arranged on the side of the seat 9, and the swivel motor 6 and the swivel center O are formed inside the swivel table bearing 30. As shown in FIG. 2, the rear portion is completely arc-shaped with respect to the front-rear center line N passing through the turning center O of the aircraft, and the arc forms a turning arc centered on the turning center O. . The arc is configured to enter between the left and right crawler traveling devices 22.

With the above construction, the rear portion of the upper body structure B follows the shape of a turning arc centered on the turning center O, and the arc is formed between the left and right crawler-type traveling devices 22. Since the vehicle is in the space where the turning work vehicle has passed, there is no possibility that the rear upper body structure B will interfere with an obstacle even if the vehicle turns. The work implement A arranged at the front end of the swivel frame 2 cannot be completely folded on the upper part of the swivel frame 2, but the bucket 4 and the main boom 3 located at the front of the operator are constantly monitored. In this state, there is little possibility that the vehicle will turn too much and come into contact with an obstacle. Therefore, although it is not actually a coffee cup type ultra-small turning type backhoe, it can be operated with the same feeling as the ultra-small turning type at the stage of actual work operation.

[0022]

As described above, the present invention has the following advantages. Conventionally, there has been a standard type backhoe, but the standard type backhoe has the following problems. Since the rear portion of the turning frame above the traveling device protrudes beyond the width of the traveling device when turning, the rear portion is likely to collide with an obstacle. In particular, when digging a gutter near a wall, the machine is moved to the side of the wall to dig a gutter, so when turning to load earth and sand on a truck stopped on the opposite side of the wall, the rear part of the turning frame will be Therefore, the upper turning frame could not be turned. Therefore, there is a problem that excavation work cannot be performed in a narrow place.

In order to solve the problems of the standard type backhoe, an ultra-small turning type backhoe as disclosed in Japanese Utility Model Laid-Open No. 1-164337 has been developed. In this ultra-small turning type backhoe, the turning frame above the traveling device does not protrude from the width of the traveling device during turning, and can be accommodated within the width. Therefore, work in a narrow place became possible. However, when digging a ditch, the ultra-small swivel type backhoe can only operate the work machine in the vertical direction, and therefore requires an offset boom mechanism on the upper part of the main boom to operate in the horizontal direction. If this offset boom mechanism is provided at the upper part, the offset boom will tilt to the side groove side in the left and right direction when digging the gutter, and when excavating with the bucket at the tip of the arm, the offset boom will hit the edge of the gutter, There was a problem that the trench could not be dug deeper.

In digging a gutter near a wall, the earth and dirt in the gutter is dug, and after the working machine is raised and turned upright, it is turned to transport the earth and sand to a truck bed. In this case, This is a state in which the boom of the work machine is offset for digging the side ditch. When the work machine is raised and set up in this posture, the rear part of the arm cylinder projects from the revolving frame from the offset boom mechanism in the unevenly positioned position. Therefore, when the turning frame is turned in this state, the rear portion of the arm cylinder protrudes from the rear portion of the turning frame, so that the arm cylinder protrudes from the traveling device, comes into contact with the side wall, and the turning becomes impossible. . Also, in the ultra-small swivel type backhoe, since the work machine has an offset boom mechanism, the work machine becomes heavy, and when the work machine is extended forward, the front-rear balance becomes poor, and when the work machine is set up Has a high center of gravity, poor balance,
Therefore, there is also a problem that work and running cannot be performed at a high speed.

In the ultra-small swivel type backhoe described in Japanese Utility Model Laid-Open Publication No. 1-164337, the engine, the radiator, and the hydraulic pump are arranged behind a swivel frame provided on the upper swing body. . However, since the rear end portion of the upper revolving structure is not the maximum projecting portion, the engine, the radiator, and the hydraulic pump cannot be installed as far behind the revolving frame provided on the upper revolving structure as possible. Therefore, it is not possible to improve the front-rear balance between the working machine projecting to the front side of the ultra-small turning type backhoe and the engine installed in the rear part, so that stability during work is deteriorated and work efficiency is improved. Can not. Further, since the rear portion of the upper revolving structure is not formed in an arc shape in a plan view, the installation area of the engine or the like cannot be increased, so that a higher-output engine, a larger-capacity radiator, a hydraulic pump, etc. Cannot be installed.

The present invention has solved the above-mentioned problem of the ultra-small swivel type backhoe. That is, claim 1 of the invention of the present application is that a swivel frame is pivotally mounted on a traveling device via a swivel bearing, and a seat,
An upper body structure is formed by disposing an engine, a radiator, a hydraulic pump, and the like, and a work machine is provided at a front end of the upper body structure via a work machine pivot so that the work machine can be operated in the up-down direction and the left-right direction. In a supported turning work vehicle, at least the rear largest dimension of the upper body structure is within the width of the traveling device, and
The front part of the canopy roof covering the upper part is tilted in plan view.
The rearwardly inclined structure has the following effects.

First, in a turning work vehicle in which a work machine is pivotally supported at the front end of the upper body structure so as to be operable in the vertical and horizontal directions, at least the rear largest dimension portion of the upper body structure is within the width of the traveling device. Therefore, the rear largest dimension portion of the upper body structure fits within the width of the traveling device, and the rear portion of the turntable frame does not come into contact with an obstacle during turning.
Second, especially when digging gutters, the front end of the upper body structure
In a turning work vehicle in which a working machine is pivotally operable in the vertical and horizontal directions, at least the rear largest dimension of the upper body structure is within the width of the traveling device, so that there is no need for an offset boom mechanism, and Within the width of the device, the rear part of the upper structure can pivot. Thereby, the rear part of the upper body structure can be turned within the width of the traveling device, and the offset boom does not hit the edge of the groove at the time of digging the side groove, so that there is no problem that the digging is deep. Therefore, since the swivel base frame is swung and the work machine is operated in the left-right direction to dig a gutter, deep ditching can be performed using the entire work machine. Thirdly, in a turning work vehicle in which a working machine is pivotally supported in the vertical direction and the horizontal direction at the front end of the upper body structure, at least the rear largest dimension of the upper body structure is set to be within the width of the traveling device. A mechanism is not required, so that the arm cylinder does not protrude from the swivel frame when the work machine is set up. Therefore, at the time of turning, the rear portion of the arm cylinder does not protrude from the width of the traveling device. Therefore, it is possible to dig a gutter near the wall, and furthermore, it is possible to make a turn for loading the digged earth and sand on a truck opposite to the wall. Fourth, since the work machine does not require an offset boom mechanism, the work machine becomes lighter, so that the front-rear balance of the machine is not deteriorated. Work and travel at a high speed. Fifth, cover the upper part of the seat
The canopy roof with the front part obliquely rearward in plan view
Work machine on the inclined part
Can be fitted when tilted backward,
A narrow space where the front and rear length of the working machine can be shortened
This made it possible to perform turning work in places.

According to a second aspect of the present invention, a swivel frame is rotatably mounted on the traveling device via a swivel bearing, and a seat, an engine, a radiator, a hydraulic pump, and the like are arranged on the swivel frame. A turning work vehicle, comprising a body structure and a front end of the upper body structure, which is pivotally supported via a work machine pivot so that the work machine can be operated in the up-down direction and the left-right direction. with the inside width of the traveling device dimensions portion, a rear end portion of the upper structure and the maximum protruding portion and a rear portion of the upper structure constructed in an arc shape in plan view, further, covering the upper seat A canopy roof
The right side of the front part is inclined obliquely rearward in plan view.
And retreated on the right side of the canopy roof rather than on the left side
Since the position is set , the following effect is obtained in addition to the effect described in claim 1.

First, since at least the rear largest dimension of the upper body structure is within the width of the traveling device, and the rear end of the upper body structure is the largest projecting portion, the engine, radiator, And the hydraulic pump and the like can be arranged, and the engine, the radiator, the hydraulic pump and the like are located as rearward as possible. Therefore, since the engine and the like are positioned as rearward as possible, it is possible to further improve the front-rear balance between the working machine at the front end and the engine and the like disposed at the rear, and at least the rear largest dimension portion of the upper body structure. Although it is a rearward turning small turning work vehicle having a width within the width of the traveling device, stability during work is improved, and work efficiency can be improved. Second, since the rear portion of the upper body structure is formed in an arc shape in plan view, the rear portion of the upper body structure does not protrude from the width of the traveling device during turning, and furthermore, the engine, the radiator, and Since the installation area of the hydraulic pump and the like can be increased, a higher-output engine, a larger-capacity radiator, a hydraulic pump, and the like can be mounted. Third, the cano covering the upper part of the seat
The right side of the front part is turned obliquely backward in plan view.
The canopy roof is located on the right side of the canopy roof.
To the retracted position, the operator sitting on the seat
Is located on the left side of the canopy roof.
Therefore, this part prevents the earth and sand from falling from the bucket
Can be further inclined to the right rearward
Can be fitted when the work equipment is tilted backward.
The length of the front and back of the working machine can be shortened.
This made it possible to perform turning work in narrow places.

[Brief description of the drawings]

FIG. 1 is an overall side view of a backhoe according to the present invention.

FIG. 2 is an overall plan view of the backhoe of FIG. 1;

FIG. 3 is a plan view showing the arrangement of each device on the upper part of the swivel frame 2;

FIG. 4 is a plan view of a conventional standard backhoe.

FIG. 5 is a side view of an ultra-small swivel-type backhoe in which a work machine A called a coffee cup type is folded over an upper body structure B to be able to swivel.

FIG. 6 is a plan view of the ultra-small swivel backhoe of FIG. 5;

FIG. 7 is an exploded perspective view of an offset boom mechanism for enabling ultra-small turning.

FIG. 8 is an overall perspective view of an ultra-small turning backhoe in which an engine 11 is disposed on the left and right sides of a center line M on the left and right sides.

FIG. 9 is a side view of the ultra-small swivel backhoe of FIG. 8;

10 is a plan view of the ultra-small swivel type backhoe of FIG. 8 showing the arrangement of the engine 11 and the seat 9. FIG.

[Explanation of symbols]

 Reference Signs List A work machine B upper body structure 1 work machine pivot 2 turntable frame 7 hydraulic pump 9 seat 11 engine 12 radiator 22 crawler type traveling device

Continued on the front page (72) Takashi Uno 1-32 Chayacho, Kita-ku, Osaka-shi, Osaka Inside Yanmar Diesel Co., Ltd. References JP-A-1-164337 (JP, U) JP-A-57-202461 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02F 9/08 E02F 9/16 E02F 9 /twenty four

Claims (2)

(57) [Claims] 1. An upper body structure comprising a swivel frame rotatably mounted on a traveling device via a swivel bearing, and a seat, an engine, a radiator, a hydraulic pump and the like arranged on the swivel frame. In a turning work vehicle that is supported at the front end of the upper body structure via a work machine pivot body so that the work machine can be operated in the up-down direction and the left-right direction, at least the rear largest dimension portion of the upper body structure travels. Within the width of the device and the seat
Front view of the canopy roof covering the upper part of the seat in plan view
A turning work vehicle characterized in that the turning work vehicle is configured to be inclined obliquely rearward . 2. A swivel frame is pivotally mounted on a traveling device via a swivel bearing, and a seat, an engine, a radiator, a hydraulic pump, and the like are arranged on the swivel frame to form an upper body structure. In a turning work vehicle that is supported at the front end of the upper body structure via a work machine pivot body so that the work machine can be operated in the up-down direction and the left-right direction, at least the rear largest dimension portion of the upper body structure travels. Within the width of the device, the rear end of the upper body structure is the maximum protruding part, and
The rear portion of the upper structure constructed in an arc shape in a plan view, further
The canopy roof covering the upper part of the seat is
The right side of the part is inclined diagonally backward and
A turning work vehicle, characterized in that a position on the right side of the nopy roof is retracted from the left side .