JP2015096673A - Front guard of work machine - Google Patents

Front guard of work machine Download PDF

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Publication number
JP2015096673A
JP2015096673A JP2013236504A JP2013236504A JP2015096673A JP 2015096673 A JP2015096673 A JP 2015096673A JP 2013236504 A JP2013236504 A JP 2013236504A JP 2013236504 A JP2013236504 A JP 2013236504A JP 2015096673 A JP2015096673 A JP 2015096673A
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JP
Japan
Prior art keywords
guard
driver
seat
roof
floor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2013236504A
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Japanese (ja)
Inventor
原 正敏
Masatoshi Hara
正敏 原
寿行 橋本
Toshiyuki Hashimoto
寿行 橋本
Original Assignee
コベルコ建機株式会社
Kobelco Contstruction Machinery Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by コベルコ建機株式会社, Kobelco Contstruction Machinery Ltd filed Critical コベルコ建機株式会社
Priority to JP2013236504A priority Critical patent/JP2015096673A/en
Publication of JP2015096673A publication Critical patent/JP2015096673A/en
Pending legal-status Critical Current

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Abstract

An operator can be protected from flying objects and the like even with a simple canopy structure while ensuring ease of getting on and off of the operator. In a front guard 11 attached to a dismantling machine having a driver's seat on the floor, a roof 7 covering the upper side of the driver's seat, and a plurality of columns 8 and 9 for supporting the roof 7, a plurality of columns are provided. 8 and 9, one end is swingably supported on the front column 9 on the front side of the driver's seat and on the opposite side to the entrance / exit of the driver's seat, and can be opened and closed. A support column is not disposed on the other end side of the front guard 11, and the other end is configured to be fixed to at least one of the roof 7 side and the floor side in a closed position, and is configured to be opened in the direction in which the entrance is widened. To do. [Selection] Figure 3

Description

  The present invention relates to a front guard of a work machine such as a dismantling machine without a cab.

  Conventionally, it is known that a front guard or the like is provided in front of the driver's cab in order to prevent the operator at the driver's seat from being in danger of flying an object (for example, see Patent Documents 1 and 2). As a result, the operator is protected from flying objects caused by dismantling work or the like.

  On the other hand, in a small size such as a mini excavator, a cab is not provided but a canopy is provided around the driver's seat as a protection structure during rollover. When a work machine having such a simple structure such as a canopy around the driver's seat is used for dismantling work or the like, it is necessary to take risk prevention measures such as a front guard for protecting the operator. For this reason, as in Patent Documents 3 and 4, a protective cover is provided on the outer periphery of the canopy.

JP-A-9-228422 JP 2013-181317 A JP 2012-193511 A JP 2007-154477 A

  By the way, in a small rear turning mini-excavator or the like, there are three or two canopy posts instead of four to make it easier for an operator to get on and off, or to make driving easier with a wide field of view.

  Work machines such as Patent Documents 3 and 4 have four columns, and the front guard is supported by the two columns on the front side.

  However, a work machine with a canopy that has only three or two columns cannot support both sides of the front guard, and in some cases it may be necessary to increase the columns to support the guard. Then, there is a problem that the support is increased and it becomes difficult for the operator to get on and off.

  The present invention has been made in view of such points, and the object of the present invention is to protect the operator from flying objects and the like even with a simple canopy structure while ensuring ease of getting on and off the operator. There is in doing so.

  In order to achieve the above object, in the present invention, a cantilevered front guard is provided.

  Specifically, in the first invention, a front guard for mounting on a work machine having a driver's seat on the floor, a roof covering the upper portion of the driver's seat, and a plurality of columns supporting the roof is targeted. To do.

And in the front guard of the work machine,
Of the plurality of support columns, one end is swingably supported in front of the driver's seat and on the opposite side to the entrance / exit of the driver's seat, and is configured to be openable and closable.
The other end is not provided with a support column, and the other end is configured to be fixed to at least one of the roof side and the floor side in a closed position, and is configured to be opened in the direction in which the entrance is widened. Yes.

  According to the above configuration, there is no support on the other end side (entrance / exit side) of the front guard, and the front guard is opened in a direction in which the entrance / exit is expanded, so that the operator can easily get on and off the entrance / exit. In the closed position of the front guard, the front guard is fixed to at least one of the roof side and the floor side and therefore does not wobble. In the closed position, there are no columns on the entrance side, so the field of view is wider than when there are columns. Here, the term “fixed” does not mean that it is fixed to detachment but means that it is detachably attached by a lock or the like.

In the second invention, in the first invention,
The work machine includes a pair of rear struts and one front strut,
The one end is swingably supported by the front support column.

  According to the above configuration, in a work machine having three struts, the front guard can be swingably supported on the front strut so that the front guard can be supported using the existing front strut, and the front guard can be opened. Since there is no fourth support, it is much easier to get on and off the other end.

In the third invention, in the second invention,
The front column is configured to be detachable from the floor and the roof.

  According to the above configuration, the front guard can be easily attached to a work machine having a canopy structure including only a pair of rear support columns.

In the fourth invention, in any one of the first to third inventions,
With a lower guard and an upper guard,
The upper guard is configured to be openable and closable,
The lower guard is fixed to the floor.

  According to the above configuration, it is possible to open and close only by enabling the opening and closing of only the portion of the upper guard that easily gets in the way when getting on and off.

In the fifth invention, in the fourth invention,
The other end of the upper guard is configured to be fixed to the lower guard at a closed position.

  According to the above configuration, by allowing the other end of the upper guard to be fixed at the closed position to the lower guard fixed to the floor, the front guard can be reliably fixed with a simple configuration.

In a sixth invention, in any one of the first to fifth inventions,
By fastening the bolt, it can be attached to and detached from the existing work machine.

  According to the above configuration, it is possible to attach and detach the bolt by fastening it, so that it can be easily attached to an existing machine, and can be easily assembled and shipped when damaged.

  As described above, according to the present invention, since one end side is rotatably supported by the support column and the other end side is not provided with the support column, while ensuring the ease of getting on and off the operator, Even a simple canopy structure can protect the operator from flying objects.

1 is a side view showing a work machine according to an embodiment of the present invention. It is a perspective view which shows the canopy which has the front guard which concerns on embodiment of this invention in a closed position. It is a perspective view which shows the canopy in which a front guard is in an open position. It is a front view which shows the canopy which has a front guard in a closed position. It is a side view which shows the canopy which has a front guard in a closed position. It is the expansion perspective view which looked at the upper latch and its periphery from the driver's seat side. It is the expansion perspective view which looked at the lower latch, the front side grip part, and its periphery from the driver's seat side. It is the expansion perspective view which looked at the stopper part of a closed position, and its periphery from the front side. It is the expansion perspective view which looked at the stopper part of an open position, and its periphery from the entrance / exit side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a demolition machine 1 as a working machine according to an embodiment of the present invention. In this demolition machine 1, an upper revolving unit 3 is connected to a lower traveling unit 2 provided with a crawler and the like so as to be capable of swiveling. . For example, the upper swing body 3 is a rear ultra-small swing mini excavator to which an attachment 4 used for civil engineering, building demolition, recycling of automobiles / waste home appliances, crushed stone, forestry, etc. can be attached at the front end.

  A driver's seat 6 is installed on the floor 5 of the upper swing body 3. The upper side of the driver seat 6 is covered with a roof 7. In the case of the dismantling machine 1, the roof 7 itself needs to have an appropriate strength as a head guard. The roof 7 includes, for example, a roof pipe 7 a connected in a substantially rectangular shape, and the roof pipe 7 a is supported by a pair of rear columns 8 and a single front column 9 whose lower ends are fixed to the floor 5. Yes. In the present embodiment, an entrance 20 is provided on the left side of the driver's seat 6. The left rear column 8 is provided with a U-shaped boarding / unloading handle 8a for an operator to hold when getting on / off. The canopy 10 having a simple structure is constituted by the roof 7, the pair of rear columns 8 and the one front column 9 in front of the driver's seat 6 and on the opposite side of the entrance / exit 20. The lower ends of the pair of rear struts 8 and one front strut 9 do not have to be directly attached to the floor 5, and may be attached to a handrail or other parts protruding above the floor 5.

  As a feature of the present invention, as shown in FIGS. 2 to 5, a front guard 11 is attached to the front strut 9 on the front right side when viewed from the driver's seat 6. The front guard 11 includes a lower guard 12 and an upper guard 13. The upper guard 13 is configured to be openable and closable, and the lower guard 12 is fixed to the floor 5. The lower guard 12 and the upper guard 13 are covered in a lattice shape so as not to block the view of the operator seated on the driver's seat 6 as much as possible. The lower guard 12 and the upper guard 13 may be a transparent plate such as a glass plate or an acrylic plate, and may be a net-like one that does not obstruct the view even if it is not a lattice shape. It may be covered.

  The lower guard 12 may be fixed to the floor 5 with bolts using a female screw portion of the floor 5 provided with a U-shaped protection bar when used in normal excavation work. Then, installation to the existing machine is easy. The right side of the lower guard 12 is fixed to the front column 9. The lower guard 12 is sized so as not to obstruct the operator when getting on and off.

  The upper guard 13 has a C-shaped frame member 13a that is open on the right side when viewed from the front, and the frame member 13a is fixed to the front column 9 with, for example, three clamps 13b. The lower side of the frame member 13 a is fixed to or integrated with the lower guard 12. Below the frame member 13a, a U-shaped front gripping part 14 is provided for placing a hand when getting on and off. As shown in FIG. 6, the upper side of the frame member 13 a is fixed to the roof pipe 7 a via the roof mounting bracket 15 with mounting bolts 15 a. As shown in FIG. 2, a pair of upper and lower hinge portions 13c is provided in a vertically extending portion of the frame member 13a, and the rectangular upper guard body 13d is directed outwardly through the hinge portions 13c, that is, the entrance / exit. 20 is supported so as to be able to swing so as to open in the expanding direction.

  On the other hand, since the front support column 9 is not disposed on the left entrance / exit 20 side when viewed from the driver's seat 6 of the upper guard 13, the fixing method of the upper guard body 13d becomes a problem. In the present embodiment, the left end of the upper guard body 13d is configured to be fixed (lockable) at the closed position on the roof 7 side and the floor 5 side. Specifically, as shown in an enlarged view in FIG. 6, on the roof 7 side, an upper latch 16 is provided between the upper side of the frame member 13a that is firmly fixed to the roof mounting bracket 15 and the upper guard body 13d. ing. By opening and closing the upper lever portion 16a of the upper latch 16, the upper end of the upper guard body 13d can be locked at the closed position on the roof 7 side of the frame member 13a. Further, as shown in an enlarged view in FIG. 7, on the floor 5 side, a lower latch 17 is provided between the lower side of the frame member 13a firmly fixed to the lower guard 12 and the upper guard body 13d. Yes. By opening and closing the lower lever portion 17a of the lower latch 17, the lower end of the upper guard body 13d can be locked at the closed position on the floor 5 side of the frame member 13a.

  Further, as shown in an enlarged view in FIGS. 8 and 9, a stopper 18 that restricts the swing range of the upper guard body 13d and fixes it in the fully open position is provided at the lower right corner of the frame member 13a. ing. The stopper portion 18 includes a regulating portion 18a having a linear groove fixed to the frame member 13a, a rod member 18b having one end slidably connected to the regulating portion 18a, and the other end of the rod member 18b. An attachment portion 18c that is rotatably connected and is fixed to the lower end of the upper guard body 13d.

  By comprising in this way, since there is no support | pillar in the other end side (the entrance / exit 20 side) of the front guard 11, it is easy for an operator to get on and off. And in the closed position of the front guard 11, since the upper guard main body 13d is fixed to the roof 7 side and the floor 5 side, the front guard 11 does not wobble. In addition, even in the closed position, there is no support on the other end side, so the field of view is wider than when there is a support.

  In addition, by enabling opening and closing of only the portion of the upper guard 13 that easily gets in the way when getting on and off at the entrance / exit 20, it is lighter and easier to open and close than the entire opening including the lower guard 12.

  Further, the front guard 11 can be securely fixed with a simple configuration by allowing the other end of the upper guard 13 (upper guard body 13d) to be fixed at the closed position to the lower guard 12 fixed to the floor 5. Can do.

  Furthermore, the front guard 11 can be attached to and detached from the existing dismantling machine 1 by fastening the bolts, so that the front guard 11 can be easily attached to the existing machine, It is easy to replace when damaged.

  Therefore, according to the front guard 11 of the dismantling machine 1 according to the present embodiment, the operator can be protected from flying objects and the like even with a simple canopy structure while ensuring ease of getting on and off by the operator.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the above embodiment, the left end of the upper guard body 13d is configured to be fixed at the closed position on the roof 7 side and the floor 5 side, but only one of the upper and lower sides may be fixed (locked). In that case, the other may have a simple fitting structure that does not have a locking function like the latch structure.

  In the above embodiment, the front guard 11 is attached to the dismantling machine 1 having a canopy having three columns, but the front column 9 is detachable in a work machine that originally has only a pair of rear columns 8. The front guard 11 may be attached to the front column 9 with bolts or the like.

  In the said embodiment, although the entrance / exit 20 was arrange | positioned in the front front side of the driver's seat 6, you may provide in the front right side. In this case, the front strut 9 may be arranged on the left side so that the right end of the upper guard body 13d opens forward and the entrance 20 expands.

  In the above embodiment, the work machine is the dismantling machine 1 based on the rear ultra-small turning mini-excavator, but is not limited thereto, and includes a canopy having a simple three or less struts having no cab. If it is a working machine, it will not specifically limit.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

1 Demolition machine (work machine)
2 Lower traveling body
3 Upper swing body
4 Attachment
5 floors
6 Driver's seat
7 Roof
7a Roof pipe
8 Rear column
8a Handle for getting on and off
9 Front strut
10 Canopy
11 Front guard
12 Lower guard
13 Upper guard
13a Frame member
13b clamp
13c Hinge part
13d Upper guard body
14 Front grip
15 Roof mounting bracket
15a Mounting bolt
16 Upper latch
16a Upper lever part
17 Lower latch
17a Lower lever
18 Stopper
18a Regulatory Department
18b Bar member
18c Mounting part
20 Exit

Claims (6)

  1. A front guard that is attached to a work machine having a driver's seat on the floor, a roof that covers the driver's seat, and a plurality of columns that support the roof,
    Of the plurality of support columns, one end is swingably supported in front of the driver's seat and on the opposite side to the entrance / exit of the driver's seat, and is configured to be openable and closable.
    The other end is not provided with a support column, and the other end is configured to be fixed to at least one of the roof side and the floor side in a closed position, and is configured to be opened in the direction in which the entrance is widened. A front guard for a work machine characterized by
  2. In the front guard of the working machine according to claim 1,
    The work machine includes a pair of rear struts and one front strut,
    A front guard for a working machine, wherein the one end is supported by the front support column in a swingable manner.
  3. In the front guard of the working machine according to claim 2,
    The front guard of a working machine, wherein the front support column is configured to be detachable from the floor and the roof.
  4. In the front guard of the working machine according to any one of claims 1 to 3,
    With a lower guard and an upper guard,
    The upper guard is configured to be openable and closable,
    The front guard for a working machine, wherein the lower guard is fixed to the floor.
  5. In the front guard of the working machine according to claim 4,
    A front guard for a working machine, wherein the other end of the upper guard is configured to be fixed to the lower guard at a closed position.
  6. In the front guard of the working machine according to any one of claims 1 to 5,
    A front guard for a working machine, wherein the front guard is configured to be attached to and detached from the existing working machine by fastening a bolt.
JP2013236504A 2013-11-15 2013-11-15 Front guard of work machine Pending JP2015096673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013236504A JP2015096673A (en) 2013-11-15 2013-11-15 Front guard of work machine

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Application Number Priority Date Filing Date Title
JP2013236504A JP2015096673A (en) 2013-11-15 2013-11-15 Front guard of work machine

Publications (1)

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JP2015096673A true JP2015096673A (en) 2015-05-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017115357A (en) * 2015-12-22 2017-06-29 株式会社クボタ Canopy and implement comprising canopy

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11280116A (en) * 1998-03-31 1999-10-12 Takahashi Works:Kk Protection device for cab
WO2004076264A1 (en) * 2003-02-27 2004-09-10 Komatsu Ltd. Rops canopy of hydraulic shovel
JP2008082113A (en) * 2006-09-28 2008-04-10 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Lock device for cab guard of construction machine
JP2010037817A (en) * 2008-08-05 2010-02-18 Kobelco Contstruction Machinery Ltd Construction machine
JP2011084876A (en) * 2009-10-13 2011-04-28 Hitachi Constr Mach Co Ltd Front-guard mounting device for construction machine
JP2011097250A (en) * 2009-10-28 2011-05-12 Digix Inc Network camera
JP2013170446A (en) * 2012-02-23 2013-09-02 Kobelco Contstruction Machinery Ltd Front guard device of construction machine
JP2013181317A (en) * 2012-03-01 2013-09-12 Kobelco Contstruction Machinery Ltd Front guard device of construction machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11280116A (en) * 1998-03-31 1999-10-12 Takahashi Works:Kk Protection device for cab
WO2004076264A1 (en) * 2003-02-27 2004-09-10 Komatsu Ltd. Rops canopy of hydraulic shovel
JP2008082113A (en) * 2006-09-28 2008-04-10 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd Lock device for cab guard of construction machine
JP2010037817A (en) * 2008-08-05 2010-02-18 Kobelco Contstruction Machinery Ltd Construction machine
JP2011084876A (en) * 2009-10-13 2011-04-28 Hitachi Constr Mach Co Ltd Front-guard mounting device for construction machine
JP2011097250A (en) * 2009-10-28 2011-05-12 Digix Inc Network camera
JP2013170446A (en) * 2012-02-23 2013-09-02 Kobelco Contstruction Machinery Ltd Front guard device of construction machine
JP2013181317A (en) * 2012-03-01 2013-09-12 Kobelco Contstruction Machinery Ltd Front guard device of construction machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017115357A (en) * 2015-12-22 2017-06-29 株式会社クボタ Canopy and implement comprising canopy

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