JP4448725B2 - Construction machinery - Google Patents

Construction machinery Download PDF

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Publication number
JP4448725B2
JP4448725B2 JP2004104547A JP2004104547A JP4448725B2 JP 4448725 B2 JP4448725 B2 JP 4448725B2 JP 2004104547 A JP2004104547 A JP 2004104547A JP 2004104547 A JP2004104547 A JP 2004104547A JP 4448725 B2 JP4448725 B2 JP 4448725B2
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Japan
Prior art keywords
boom foot
cover
foot pin
construction machine
fuel tank
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JP2004104547A
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Japanese (ja)
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JP2005290727A (en
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成年 辻
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キャタピラージャパン株式会社
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Description

  The present invention is a construction in which a boom foot pin is inserted into a pair of left and right main rails, a building cover is disposed on one of the outer sides of the pair of left and right main rails, and a predetermined component is disposed on the other of the outer sides. Related to machinery.

FIG. 5 is a schematic side view showing a general configuration of a hydraulic excavator that is a traveling construction machine. As shown in the figure, the hydraulic excavator includes a lower traveling body 101, an upper revolving body 102 that has a cabin 102a and is pivotably installed on the upper side of the lower traveling body 101, and various operations provided on the upper revolving body 102. It consists of three parts with the working device 103 that performs the above.
Implement 103 includes a boom 104 having a base end portion (Bumufuto) 104a is connected to freely swing vertically on the upper swing structure 102, an arm 105 that is pivotally connected front and rear the tip of the boom 104, A bucket 106 is connected to the tip of the arm 105 so as to be swingable back and forth.

  This is a general layout. As shown in FIG. 6, the cabin 102a is connected to the upper revolving structure 102 of the boom foot 104a, and the cabin foot 102a is connected to the left and right sides of the boom foot pin P. An oil tank such as a hydraulic oil tank or a fuel tank, here a fuel tank) 110 is arranged. In other words, the cabin 102a, the boom foot pin P, and the fuel tank 110 are substantially in the same position with respect to the longitudinal direction of the base.

  Since the cabin 102a and the fuel tank 110 are arranged on both the left and right sides of the boom foot pin P as described above, the boom foot pin P is attached and detached here so that the boom foot pin P can be easily attached and detached. In order to secure a space for this, the fuel tank 110 is provided with a notch 110a located on the extension line of the axis of the boom foot pin P (see, for example, Patent Document 1).

In addition, a technique has been proposed in which a fuel tank increasing portion that can be removed when a pin is attached or detached is provided in such a notch (space portion) (see Patent Document 2).
Japanese Patent Laid-Open No. 10-18347 JP 2003-253700 A

  However, in the prior art disclosed in Patent Document 1, since the fuel tank is provided with a notch, the shape of the fuel tank is complicated, and the capacity of the fuel tank is reduced by this notch. Further, in the conventional technique shown in Patent Document 2, the amount of oil stored can be increased by providing the fuel tank increasing portion as compared with Patent Document 1, but the fuel tank increasing portion is configured to be removable from the fuel tank. , The structure becomes complicated.

    The present invention has been devised in view of such a problem, and allows the boom foot pin to be easily inserted and removed, and reduces the restrictions on the layout of a predetermined component such as a fuel tank or a hydraulic oil tank, and simplifies the configuration. The purpose is to provide a construction machine that can be realized.

In order to achieve the above object, the construction machine according to the first aspect of the present invention includes a boom foot pin inserted through a pair of left and right main rails erected with respect to a swing frame that forms the bottom of the upper swing body. In a construction machine in which a building cover is disposed on one outer side of the pair of left and right main rails and a predetermined component is disposed on the other outer side, the pin is connected to the pair of left and right main rails with respect to the pair of left and right main rails. A detachable removable part that is a part of the building cover and that is removable from the main rail, on a path of movement of the pin, and , located facing the maintenance space for a given equipment該建Ya the cover, the predetermined device is attached to the rear of the back plate of the cabin co It is characterized in that a controller and relay boxes.

According to the construction machine of the present invention, the boom foot pin is attached to the pair of left and right main rails so that the boom foot pin can be pulled out to one side of the building cover, and the removal portion of the building cover is attached to the boom rail. since disposed on the movement path of the boom foot pin when detaching pins, by removing the removable portion, perform insertion and removal of the boom foot pin from one side of the, thus, insertion and removal of the boom foot pin There is an advantage that the restriction on the layout and the simplification of the configuration can be realized in a predetermined component such as a fuel tank or a hydraulic oil tank on the other side with respect to the pair of left and right main rails. .

Further, the removal unit, since the arranged facing the maintenance space for a given device in the building cover, it is possible to use the maintenance space as a moving path.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1-4 is a figure for demonstrating the construction machine of one Embodiment of this invention, FIG. 1 is typical side view which shows the whole structure, FIG. 2 is typical which shows the principal part structure. FIG. 3 is a schematic plan view showing the configuration of the main part, and FIG. 4 is for explaining the insertion and removal of the boom foot pin. FIG. 3 is a schematic perspective view showing the configuration of the main part (a view showing a state in which a top cover and a side cover of the building cover are removed). In FIG. 2, the boom foot and the boom foot pin are omitted, and the boom foot is omitted in FIG.

First, the overall configuration of a construction machine (here, a hydraulic excavator) will be described. As shown in FIG. 1, the construction machine includes a lower traveling body 1 and an upper swing that is disposed on the upper side of the lower traveling body 1 so as to be pivotable. The body 2 and the upper revolving body 2 are provided with three parts, a work device 3 that performs various operations.
The work device 3 includes a boom 31 in which a base end portion (boom foot) 311 is pivotally supported by the upper swing body 2 so as to be swingable up and down, and an arm 32 connected to a distal end portion of the boom 31 so as to be swingable back and forth. The bucket 33 is connected to the tip of the arm 32 so as to be swingable back and forth, and the boom 31, the arm 32, and the boom cylinder 31a for operating the bucket 33, the arm cylinder 32a, and the bucket cylinder 33a are configured. Yes.

As shown in FIGS. 2 to 4, the upper swing body 2 is provided with a cabin 2 </ b> A on the left side and a fuel tank (predetermined components) on the right side so as to sandwich main rails 21 and 21 described later on the front side of the machine body. ) 4 is arranged, and behind these cabin 2A and fuel tank 4, a building cover 2B in which an engine room and the like are arranged is arranged.
Further, Bumufuto 311 is inserted through a horizontal direction by a boom foot pin P together with the upper rotating body 2 of the pair of left and right main rails 21, 21 provided upright on a swing frame SF constituting the underframe, the main rail 21 , 21 are supported so as to be swingable up and down.

  On the outer side of the mounting portion of the boom foot pin P of the main rails 21 and 21 (the side of the one main rail 21 not facing the other main rail 21, here the left side of the main rail 21 on the left side of the machine body) The left front end of the cover 2B is located, and a fuel tank (predetermined on the other side of the other main rail 21 that does not face the one main rail 21; here, the right side of the main rail 21 on the right side of the fuselage) 4) is located.

  Predetermined devices such as various controllers 51 and relay boxes 52 are accommodated in the left front end of the building cover 2B (rear of the cabin 2A). Normally, the controller 51 and the relay box 52 are protected by the building cover 2B. However, the top cover 2Ba and the side cover 2Bb, which form the left front end of the building cover 2B, can be removed from the prior art for maintenance. When performing, these covers (removal parts) 2Ba and 2Bb are removed. That is, the removable covers 2Ba and 2Bb are arranged facing a maintenance space for performing maintenance of the predetermined device.

The controller 51 and the relay box 52 are bolted to the back plate 50 behind the cabin 2A.
As shown in FIG. 3, the boom foot pin P is inserted / removed when the construction machine is assembled or maintenance is performed by extending the shaft center line L P of the boom foot pin P in the state of being attached to the main rails 21, 21 and the boom foot 311. done by moving the upper L E, further insertion and removal of the boom foot pin P, compared in the conventional has been performed in the fuel tank side, the boom foot pin P, the cabin from the main rail 21 and Bumufuto 311 Ri Contact so pulled out to 2A side, the moving path S P output during insertion and removal of the boom foot pin P is formed on the extension line L E as indicated by hatching in FIG.

And here, on the movement path S P, if the view of the (reverse above top cover 2Ba and the side cover 2Bb is located, the moving path S so as to penetrate the top cover 2Ba and the side cover 2Bb P is set).

The construction machine as one embodiment of the present invention is configured as described above, and the boom foot pin P is inserted and removed as shown in FIG.
That is, first, the top cover 2Ba and the side cover 2Bb of the building cover 2B, which are located beside the boom foot pin insertion portion of the main rails 21, 21, are removed. As a result, the space (maintenance space) V that has been conventionally used for maintenance of the controller, the relay box, and the like can be used as it is as a movement path for inserting and removing the boom foot pin P.

  Then, the operator pulls out the boom foot pin P from the main rails 21 and 21 and the boom foot to the cabin 2A side, or inserts the boom foot pins P into the main rails 21 and 21 and the boom foot from the cabin 2A side. For example, when the boom foot pin P is inserted and attached, the boom foot pin P is attached to the main rails 21 and 21 in the horizontal posture with the attachment plate P1 fixed to one end thereof facing upward as shown in the figure. insert. Then, as shown by the arrow F, it is rotated by a predetermined amount so that the insertion hole P2 provided in the mounting plate P1 and the bolt hole 21a provided in the main rail 21 coincide with each other. The bolt B is attached to the hole 21a through the washer W, and the attachment of the boom foot pin P is completed.

Thus, according to this construction machine, since the boom foot pin P can be inserted and removed on the cabin 2A side, the space (movement path) through which the boom foot pin P passes on the opposite side becomes unnecessary. The capacity of the fuel tank 4 can be increased as compared with the fuel tank provided with a notch as in Document 1.
In the technique of Patent Document 2, the fuel tank increasing portion is detachably provided and the structure around the fuel tank is complicated. However, according to the construction machine, such a tank increasing portion is not provided. There is an advantage that the capacity of the fuel tank and hydraulic oil tank can be made sufficient.

The construction machine of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
By example, in the above embodiment, a removable constituting the top cover 2Ba and the side cover 2Bb, at least, a removable portion corresponding to the side cover 2Bb located on the movement path S P output boom foot pin P It ’s fine.

It is a typical side view showing the whole construction machine composition of one embodiment of the present invention. It is a typical perspective view which shows the principal part structure of the construction machine of one Embodiment of this invention. It is a typical top view showing the important section composition of the construction machine of one embodiment of the present invention. It is a typical perspective view which shows the principal part structure of the construction machine of one Embodiment of this invention. It is a typical side view which shows the whole structure of the conventional construction machine. It is a figure shown about the conventional construction machine, Comprising: (a) is the typical top view, (b) is a typical A arrow view of (a).

Explanation of symbols

2 Upper swing body 21 Main rail 2B Building cover 2Ba Top cover (removal part of building cover)
2Bb Side cover (removal part of building cover)
P Boom foot pin S P Boom foot pin travel path SF Swing frame V Maintenance space

Claims (1)

  1. Boom foot pins are inserted into a pair of left and right main rails erected with respect to the swing frame that forms the bottom of the upper swing body, and a building cover is disposed on one outer side of the pair of left and right main rails, and a predetermined value is set on the other outer side. In the construction machine where the components of
    The pins are attached to the pair of left and right main rails so that they can be pulled out to the outer side with the building cover,
    A removable part which is a part of the building cover and is removable is on a movement path of the pin when the pin is attached to and detached from the main rail, and maintenance for a predetermined device in the building cover is performed. Placed facing the space ,
    The construction machine, wherein the predetermined devices are a controller and a relay box attached to a back plate behind the cabin .
JP2004104547A 2004-03-31 2004-03-31 Construction machinery Expired - Fee Related JP4448725B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004104547A JP4448725B2 (en) 2004-03-31 2004-03-31 Construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004104547A JP4448725B2 (en) 2004-03-31 2004-03-31 Construction machinery

Publications (2)

Publication Number Publication Date
JP2005290727A JP2005290727A (en) 2005-10-20
JP4448725B2 true JP4448725B2 (en) 2010-04-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004104547A Expired - Fee Related JP4448725B2 (en) 2004-03-31 2004-03-31 Construction machinery

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Country Link
JP (1) JP4448725B2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4920022B2 (en) * 2008-10-30 2012-04-18 日立建機株式会社 Swivel construction machine
JP5790016B2 (en) 2011-02-18 2015-10-07 コベルコ建機株式会社 hybrid construction machinery
JP6135149B2 (en) * 2013-01-24 2017-05-31 コベルコ建機株式会社 Work machine
JP6091993B2 (en) * 2013-05-15 2017-03-08 住友建機株式会社 Excavator
JP6003957B2 (en) * 2014-09-29 2016-10-05 コベルコ建機株式会社 Interior arrangement structure of construction machinery
JP6312620B2 (en) * 2015-03-17 2018-04-18 ヤンマー株式会社 Structure for attaching / detaching the spindle member of the work machine
JP6312619B2 (en) * 2015-03-17 2018-04-18 ヤンマー株式会社 Structure for attaching / detaching the spindle member of the work machine
JP6369495B2 (en) * 2016-03-31 2018-08-08 コベルコ建機株式会社 Work machine

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