JP2001011898A - Sunshade device for slewing work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide two supports for strongly supporting a sunshade thereby preventing the vibration of the supports without disturbing the opening and closing of bonnets even when a slewing work machine is relatively small in size. SOLUTION: A fixed bonnet 13 is provided at one side of the left-right of a slewing base 4 equipped with a working device 5 at the front portion, and a bonnet 12 opening and closing back and forth is provided at the other side of the left-right. An operator's seat 14 is placed above the bonnet 12, a first support 43 is erected on the fixed bonnet 13 at the one side of the left-right of the operator's seat 14, a second support 44 is erected at the other side of the left-right of the slewing base 4 at the other side of the left-right of the operator's seat, and the sunshade device is supported by these first and second supports 43, 44.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a turning work machine such as a backhoe, a turning table is provided on a traveling device so as to be able to turn around a vertical axis, and a drilling device is provided at the front end of the turning table so as to be able to swing left and right. It is also known to mount a hood covering an engine or the like on a swivel table, mount a driver's seat on the hood, and provide a sunshade above the driver's seat via a support post. For example, the backhoe described in Japanese Patent Application Laid-Open No. 9-67832 is a so-called rearward small turning type in which the turning radius of the turning table is set within the left and right widths of the traveling device. The front part is fixed to the swivel, and the rear part is connected to the front part so as to be openable and closable up and down (front and rear). Was installed on fixed hoods on both sides of the driver's seat.

[0003] Further, as another small back turning type backhoe, there is a backhoe having a bifurcated right and left bifurcated support between the openable hood and the driver's seat.

[0004]

The arrangement structure of the sunshade strut in the above-mentioned conventional backhoe is adopted, for example, in a backhoe with a small rearward turning type having a body weight of 2t class or more. Since the space on the upper surface of the hood is relatively large, both the arrangement space for the driver's seat and the arrangement space for the sunshade support columns can be sufficiently secured on the hood. However, in recent years, smaller backhoes capable of performing various operations on narrow premises such as urban areas have been developed, and the hood of such backhoes has become smaller. Is difficult to secure, and the space behind the driver's seat is narrow,
If a support is provided in this portion, there is a problem that the support prevents the hood from being opened and closed greatly.

[0005] In particular, in a small backhoe, since a device such as an engine is packed in a narrow hood, it is an important issue in terms of ensuring maintainability to open and close the hood largely. It has also been considered that one pillar is erected on the left and right sides of the driver's seat, and that the pillar supports the sunshade in a cantilevered manner, thereby reducing the pillar space occupied on the turntable. However, this may result in insufficient support for the awning, and a new problem arises in that the strut and the awning vibrate greatly during traveling or work, which causes discomfort to the operator. .

[0006] Therefore, the present invention provides a method for supporting a sunshade firmly with two or more columns without interfering with the opening and closing of the hood, even for a relatively small turning work machine, to prevent the sunshade from vibrating. An object of the present invention is to provide a awning device for a turning work machine that can be used.

[0007]

The present invention employs the following technical means to achieve the above object. That is, the present invention relates to a awning device for a turning work machine, comprising a driver's seat and a bonnet on a swivel having a working device provided at a front portion thereof, and a awning via a support above the driver's seat. A first support standing upright from the hood on one left and right side of the driver's seat, and a second support standing upright from the left and right other side of the swivel on the left and right other side of the driver's seat. It is characterized by being supported by a support.

According to this, of the first and second columns,
Only the first support is erected from the hood on one side of the driver's seat on the left and right sides, and the second support is erected from the other left and right sides of the swivel, thereby reducing the space required for the support on the hood. On the other hand, the sunshade can be firmly supported by the two pillars, and vibration and the like can be reliably suppressed. Further, since the first and second struts are arranged on the left and right sides of the driver's seat, the rear is open, so that there is no problem in opening and closing the hood. In the above case, the first
It is preferable to dispose the struts on one side on the left and right sides of the hood and to arrange the driver's seat on the other side on the same left and right sides in order to make effective use of the space on the bonnet.
A first hood is provided on one side of the swivel table and fixed to the swivel table, and a second hood is provided on the other side of the swivel table and can be opened and closed in the front-rear direction. It is preferable that the first support is provided on the first hood and the driver's seat is provided on the second hood.

By doing so, the entire second bonnet can be opened and closed greatly on the opposite side of the first support, so that the maintainability can be improved. Since the second support is on the side surface of the swivel base, the second support can be used. There is no problem in opening and closing the hood. In the above-described present invention, the sunshade can be firmly supported by the first and second columns, but the greater the number of columns, the more advantageous in terms of vibration prevention. For this reason, it is preferable to set up the support columns from the front side of the swivel base, but in this case, the operating space at the front of the swivel base is small with a small turning work machine, so the support columns are set up from the step of the driver. Then, there is a possibility that the circumference of the driver's feet becomes narrower and the workability is deteriorated.

Therefore, in the present invention, a third support is erected from the handrail using a handrail provided on the front side of the driver's seat, and a sunshade is supported by the first to third supports. As a result, it is possible to more firmly support the awning without narrowing the circumference of the driver's foot. In addition, the first or the second as described above
It is also possible to support the sunshade with two struts, namely, the strut and the third strut, whereby the sunshade can be firmly supported by the two struts without hindering the opening and closing of the hood. There is no need to narrow the driver's undercarriage.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 3 and 4 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 right and left crawler traveling bodies 2 in a vertical direction ( The main structure is provided with a swivel table 4 that is swivelable about a swivel axis P1 (vertical direction). A drilling device (working device) 5 is provided at the front end of the turntable 4.
A control floor 8 provided with an operation unit 6 and a step unit 7 is provided on the front left side of the swivel 4.
On the turntable 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 and tanks 10 and 11 are mounted.
2, 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 turntable 4. The excavator 5 includes a swing bracket 17, a boom 18, an arm 19, and a bucket 20, and the excavator 5 is provided with a support bracket 16 provided on the right front end of the swivel 4 (right side of the pivot axis P1). A swing bracket 17 is supported so as to be able to swing left and right around a vertical swing axis P2. The swing bracket 17, the boom 18, the arm 19, and the bucket 20
Is a swing cylinder 2 composed of hydraulic cylinders
1. The swing drive is performed by a boom cylinder 22, an arm cylinder 23, and a bucket cylinder 24.

The swivel base 4 is supported by a swivel bearing 25 provided at the center of the traveling device 3 so as to be rotatable around a swivel axis P1. The swing motor 27 (see FIG. 5) provided on the base frame 26 (see FIGS. 6 and 7) drives the swing. As shown in FIGS. 1 to 5, a rear end of the base frame 26 is provided with a front end side excavator 5.
A counterweight 28 is provided to balance the weight of the base frame 26, and a cover frame 29 made of sheet metal is attached to the left and right edges and the front edge of the base frame 26 on the front side of the counterweight 28. These form an outer shell of the swivel 4.

The rear part of the turntable 4 (rear part of the counterweight 28) is formed on an arc-shaped wall centered on the turning axis P1, and the turning locus drawn by the rear part of the turntable 4 is defined by the left and right of the traveling device 3 and It is contained within the front and rear width. The left and right sides of the swivel 4 (the side of the cover frame 29 and the front of the counterweight 28) are formed on the front and rear walls, and the left and right widths of the swivel 4 are larger than the diameter of the turning locus. It is formed narrow. Thus, the turning work machine 1 of the present embodiment belongs to a small rear turning type in which the turning table 4 can turn without protruding from the vehicle width of the traveling device 3,
Thus, traveling on narrow roads and excavation work can be easily performed.

As shown in FIG. 5, an engine 9 is disposed laterally at a rear portion (right side in FIG. 5) of the base frame 26, and a hydraulic pump 30 is directly connected to a left side of the engine 9, and a right side of the engine 9 is provided. A radiator 31 is arranged on the side. Weight 28 located behind this engine 9
The hydraulic oil tank 10 is stored in a storage recess 28a (see FIG. 6) formed in the portion, and a battery 32 is provided above the hydraulic oil tank 10. An air cleaner 33, a muffler 34, and the like are disposed above the hydraulic pump 30, and a fuel tank 11 is disposed in front of the radiator 31 and on the right side of the control floor 8.

Bonnets 12 and 1 covering the upper part of the swivel 4
Reference numeral 3 denotes a fixed bonnet (first bonnet) 13 fixed to the swivel base 4 and an openable / closable hood (first bonnet) capable of opening and closing the swivel base 4 as shown in FIG. 2 hoods) 12. The open / close hood 12 is disposed immediately behind the control floor 8, that is, on the left side of the rear portion of the swivel table (a range including the left end of the swivel table 4 and the pivot axis P 1). Etc. are covered from above.
Further, the opening / closing hood 12 swings back and forth (up and down) around a left-right axis P3 via a hinge member 35 provided at an intermediate portion between the left and right of the counterweight 28 constituting the rearmost portion of the swivel base 4. It is freely connected.

As shown in FIG. 6, a substantially gate-shaped support frame 39 is fixed on the inner wall surface of the openable hood 12 so as to cover the engine 9 and the muffler 34 in a side view. The frame 39 supports the load from the driver's seat 14 inside the hood 12. The hinge member 35 is provided at the rear end of the support frame 39. Therefore, the opening / closing hood 12 is vertically swingable about the left-right axis P3 at the rearmost portion of the swivel base 4. The opening and closing hood 12 is fixed to the support frame 39 pivotally attached to
When opened, the support frame 39 is also opened at the same time, so that the support frame 39 does not hinder the inspection work of various devices in the open / close hood 12.

Further, since the supporting frame 39 always swings integrally with the opening / closing bonnet 12 and functions as a reinforcing member of the opening / closing bonnet 12 during opening or closing, the distortion of the opening / closing bonnet 12 during opening / closing is effectively prevented. Will be done. Furthermore, since the opening / closing hood 12 is located immediately behind the control floor 8, when the opening / closing hood 12 is fully opened, inspection work of various devices can be performed from the control floor 8 side. Has become easier. On the left side of the opening and closing hood 12, that is, on the rear side of the entrance 15, in addition to the air cleaner 33 and the hydraulic pump 30, fuel-related equipment (such as a fuel filter and an electromagnetic pump) 40 and electric components that need daily inspection are provided. Has been placed. Therefore, by opening the openable hood 12, the daily inspection equipment 40 stored on the left side of the hood 12 from the entrance 15 can be easily inspected.

Also, as shown in FIG.
The zero fueling pipe 10a extends obliquely upward from the left side of the upper surface of the tank, and the fueling port 10b is moved to the left side in the bonnet 12. The reservoir tank 36 of the radiator 31 is attached to the fueling pipe 10a. Thus, by opening the opening / closing hood 12, the supply to the hydraulic oil tank 10 and the reservoir tank 36 can be suitably performed. As shown in FIG.
A concave portion 12a is formed in the center of the upper surface of the upper surface of the vehicle, and the driver's seat 14 is mounted in the concave portion 12a so as to swing open and close integrally with the openable hood 12. At the center of the concave portion 12a, there is provided a second concave portion 12b which is further depressed downward by one step.
A tool 37 such as a grease gun can be stored in b.

The second recess 12b is opened by rotating the front portion of the driver's seat 14 about a fulcrum in the left-right direction, so that the tool 37 can be taken in and out. The driver's seat 14 is arranged at a position slightly eccentric to the left with respect to the pivot axis P1. The fixed hood 13 is provided on the right side of the opening / closing hood 12 and the control floor 8, that is, on the right side of the swivel base 4, in a range from the rear to the front of the swivel base 4. 31 and fuel tank 1
Covering one.

As shown in FIGS. 5 and 7, a fixed frame 45 is provided in the fixed bonnet 13, and this fixed frame 45 is formed of a metal plate material. The radiator 31 is formed in a gate shape to cover the upper side and the front and rear sides. The front leg 45a of the fixed frame 45 is vertically inserted between the radiator 31 and the fuel tank 11 to be fixed to the base frame 26, and the rear leg 45b projects upward from the weight 28. A base plate 45c extending forward and backward is integrally fixed to upper ends of the front and rear legs 45a and 45b.

The fixed frame 45 is disposed near the left side of the radiator 31 in a plan view, and the base plate 45c is connected to the engine 9 and the radiator 31.
Is disposed so as to overlap with the radiator fan 48 therebetween. As described above, since the fixed frame 45 is formed in a gate shape so as to cover the outer periphery in a side view at a position near the radiator 31, the fixed frame 45 is formed.
Has a guard function of the radiator 31, and if the radiator 31 is connected to the fixed frame 45 via a support member 49 (see FIG. 5), the radiator 31 can be prevented from being vibrated.

As shown in FIG. 3 and FIG.
Above 4, a awning (canopy) 42 is provided. The sunshade 42 includes a first column 43 erected on the right side of the driver's seat 14 and above the fixed bonnet 13,
The left side of the driver's seat 14 is supported from both left and right sides by two columns 43 and 44 including a second column 44 erected upward from the left side surface of the swivel base 4. The base of the first column 43 is mounted on a base plate 45c of a fixed frame 45 provided in the fixed bonnet 13, and the substrate of the first column 43 is bolted to the upper surface of the base plate 45c. Bosses 46 are protruded, and each boss 46 protrudes upward through an opening provided in the upper side wall of the fixed bonnet 13. The substrate is bolted. As shown in FIGS. 2 and 7, the base of the first support column 43 is closed in a watertight manner by a flexible base cover 47 made of rubber or the like.

Note that the first support column 43 directly connects the base plate portion thereof to the base plate 45 c without the intervention of the boss portion 46.
An upper portion may be fixed by bolts. In this case, an opening through which the first support column 43 is inserted may be provided on the upper surface of the fixing bonnet 13. A plate-like mounting piece 50 is provided at the base of the second support 44.
Is provided, and the mounting piece 50 is
8 is connected to the left front side surface via a fastener 51 such as a bolt. In addition, the first and second columns 4
The upper ends of the connecting bars 52 are connected to each other by a connecting rod 52 so as to reinforce each other. The rear surface of the sunshade 42 is fixed to the left and right ends of the connecting rod 52 by bolts.

According to the awning device of the present invention, only the first column 43 of the first and second columns 43 and 44 is erected from above the fixed bonnet 13 on the right side of the driver's seat 14. Therefore, the space for arranging the pillars on the hoods 12 and 13 is reduced, and
Since the awning 42 can be firmly supported not only by the first support 43 but also by the second support 44 while supporting the miniaturization of 3, the vibration of the awning 42 can be reliably suppressed. Further, since the second support 44 is provided on the left side surface of the swivel base 4 on the left side of the driver's seat 14, the open / close hood 12 can be largely opened and closed without obstruction of the second support 44. Can be maintained favorably.

Since the first support column 43 is fixed to the fixed frame 45 extending in the front-rear direction on the right side of the swivel table 4, the fixed bonnet 13 having the support column 43 has a narrow left-right width and a long front-rear shape. The opening and closing hood 12 can cover most of the left side of the swivel 4 avoiding the first support column 43, so that the internal engine 9 and other devices are largely exposed for inspection work and the like. Easy to do. Further, the second support 44 is fixed to the high-strength counterweight 28 on the side surface of the swivel 4 so that the second support 44 can be firmly supported without a special reinforcing structure. I have. However, it may be fixed to the cover frame 29 and appropriately reinforced.

Since the side surface of the revolving base 4 is formed on a straight wall in the front-rear direction so that the left-right width of the revolving base 4 is smaller than the turning diameter, the second support 44 is attached to this side surface. The second column 44 can be configured so as to reduce the amount of protrusion from the turning diameter or not to project from the turning diameter, thereby preventing a substantial increase in the turning diameter.
Also, of the first and second supports 43 and 44, the second support 44
Since only the swivel 4 is erected from the side of the swivel 4, the amount of protrusion of the struts 43, 44 from the swivel diameter is smaller than when both the struts 43, 44 are erected from the side of the swivel 4. You can do it.

An operation box 56 provided with an operation lever 55 and the like is erected on the operation section 6 of the control floor 8, and a turning motor 27 is provided in the turntable 4 below the operation box 56.
And a control valve unit 58 for hydraulically controlling each hydraulic cylinder of the excavator 5 and the like. Operation box 5
A pedal device 61 such as a swing pedal, a speed-up pedal, a service port pedal, etc. is provided on each of the left and right sides of the lower part of the lower part 6. The left part of the step part 7 at the rear of the control floor 8 is an entrance for an operator to get on and off. 15 is set.

The step portion 7 extends in the left-right direction between the opening / closing hood 12 and the operation portion 6 from the entrance 15 and the operation portion 6 and the fixed hood 1 extend from the extending end.
3 has a metal step member 59 of a substantially L-shape in a plane projecting forward (see FIG. 1), and the upper surface of the step member 59 follows the shape of the step member 59. An L-shaped rubber mat in a plan view is provided, and the entirety of the step member 59 has a non-slip function and the like. Therefore, the step member 59 is formed with a projecting portion 59a projecting forward between the operating portion 6 and the fixed bonnet 13, and is stretched when the operation pedal 61 on the right side of the operation box 56 is not used. The protrusion 59a can be used as a footrest space. Also,
The overhang portion 59a is provided on the support bracket 16 of the excavator 5.
Since the backhoe device 5 is disposed behind the (swing axis P2), the backhoe device 5 can be visually recognized by the space above the overhang portion 59a, and it is particularly easy to confirm the left and right swing state of the excavator device 5 and the like. . Further, it is easy to confirm the foot of the traveling device 3 from the space.

At the operation box 56, both ends of a handrail member 63 having a front gate type are attached and fixed. The right end of the handrail member 63 is connected to the lower side of the right side of the operation box 56, the left end of the handrail member 63 is connected to the upper side of the left side of the operation box 56, and the middle part is connected to the front side of the operation lever 55. It is configured to pass right and left, and by having the handrail member 63, it is easy to get on and off the control floor 8, and the handrail member 63 protects the control floor 8 including the operation box 56 from the front side. It has a function as a guard.

FIGS. 8 and 9 show the second embodiment of the present invention.
As an embodiment, a third support 65 is provided upright from the handrail member 63, and the third support 65 is
The backhoe 1 in which the sunshade 42 is supported by three pillars of the first and second pillars 43 and 44 is shown. The third support 65 of this embodiment has a lower end fixed to the upper left side of the handrail member 63 by welding or the like, and an upper end fixed to a front connecting rod 66 protruding forward from the connecting rod 52. Therefore, the first to third columns 43, 4
The upper ends of the four and 65 are connected to each other via the connecting rod 52 and the front connecting rod 66 so as to reinforce each other.

According to this embodiment, the first to third columns 4
Since the sunshade 42 can be more firmly supported by 3, 44, and 65, and the third support column 65 is erected from the upper part of the handrail member 63 erected from the swivel table 4, the steering of the step portion 7 and the like is performed. The digging device 5 is visually recognized from the driver's seat 14 because the third column 65 is provided on the left side of the handrail member 63 (side away from the digging device 5) without eroding the area of the floor 8. In this case, the third support 65 is not obstructed. In addition, the third support 65
Is preferably formed thinner than the first and second struts 43 and 44 in order to reduce obstruction of the driver's field of view. The present invention is not limited to the above embodiment, and the design can be changed as appropriate. .

For example, the hoods 12 and 13, the driver's seat 14, and the sunshades 43, 44 and 6 with respect to the pivot axis P 1.
5. The arrangement of the swing axis P2 of the working device 5 and the like can be reversed left and right from the above embodiment. Further, it is also possible to support the sunshade 42 with two columns by a combination of the first column 43 and the third column 65, or the combination of the second column 44 and the third column 65, and the handrail member 63 includes an operation box. It may be one that stands upright from the upper surface of the swivel 4 at the front side 56.

Further, the present invention is not limited to the bonnet of the left-right split type as described above, but may be applied to a front-rear split type in which the rear side is configured to be openable and closable back and forth (up and down).

[0035]

As described above in detail, according to the present invention, even if it is a relatively small turning work machine, the sunshade can be firmly supported by two or more columns without hindering the opening and closing of the hood. In addition, it is possible to prevent vibration of a sunshade and the like.

[Brief description of the drawings]

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

FIG. 2 is a rear view of the swivel.

FIG. 3 is an overall side view of the turning work machine.

FIG. 4 is a perspective view of a turning work machine.

FIG. 5 is a plan sectional view of the swivel base.

FIG. 6 is a left side sectional view of the swivel base.

FIG. 7 is a right side sectional view of the swivel base.

FIG. 8 is a side view of a turning work machine according to a second embodiment of the present invention.

FIG. 9 is a perspective view of the same.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 turning work machine 4 turning table 5 excavator 12 opening and closing hood (second hood) 13 fixed hood (first hood) 14 driver's seat 42 sunshade 43 first support 44 second support 63 handrail member 65 third support

Claims (4)

[Claims] 1. A driver's seat (14) and a hood (12, 1) on a swivel (4) provided with a working device (5) at the front.
3), and a column (43, 43) above the driver's seat (14).
44, 65), wherein the awning (42) is provided with a awning (42) through the hood (13) at one side of the driver's seat (14) from the hood (13). It is supported by an upright first column (43) and a second column (44) that stands upright from the other left and right side surfaces of the swivel base (4) on the left and right sides of the driver's seat (14). A awning device for a turning work machine, wherein the awning device is used. 2. The hood (12, 13) is disposed on one side of the turntable (4) on the left and right sides and fixed to the turntable (4). ), Which are disposed on the other side on the left and right sides and can be opened and closed in the front-rear direction.
A bonnet (12), the first column (43)
2. The awning of a turning work machine according to claim 1, wherein the hood is disposed on the first hood (13), and the driver's seat (14) is disposed on the second hood (12). apparatus. 3. A handrail member (63) is provided upright in front of the driver's seat (14), and the sunshade (42) is provided.
The first column is supported by the first and second columns (43, 44) and a third column (65) erected upward from the handrail member (63). Or the awning device of the turning work machine according to 2. 4. A driver's seat (14) and a hood (12, 1) on a swivel (4) provided with a working device (5) at the front.
3), a handrail member (63) is provided upright in front of the driver's seat (14), and a sunshade (42) is provided above the driver's seat (14) via columns (43, 44, 65). A awning device for a turning work machine comprising a awning (42), wherein the awning (42) is provided on a first column (43) standing upright from the hood (13) on one of the left and right sides of the driver's seat (14). Or a second column (44) standing upright from the other left and right side surfaces of the swivel (4) on the left and right sides of the driver's seat (14), and the handrail member (6).
3) A awning device for a turning work machine, wherein the awning device is supported by a third support (65) standing upward from above.