JP2006035897A - Battery holding structure of working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To hold a plurality of batteries by a small number of members. <P>SOLUTION: This battery holding structure of a working machine is furnished with a cover plate 16 to regulate movement of a ridge out of the pair of ridges extending in the battery parallel setting direction of respective upper surfaces 13b, 14b of the batteries 13, 14; brackets 17, 18 engaged with and attached to a side frame 15, having leg parts 17a, 18a erected along one rising surfaces 13a, 14a of the batteries 13, 14 continuously provided on the one ridge part and engaging parts 17b, 18b to be engaged with respective upper surfaces 13b, 14b of the batteries 13, 14 and integrally provided with the cover plate 16; and erected members 19, 20 erected along the other rising surfaces positioned on the opposite side of the one rising surfaces 13a, 14a of the batteries 13, 14 and fastened to the brackets 17, 18 by bolts 21, 23 and nuts 22, 24. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a battery holding structure that is provided in a work machine such as a hydraulic excavator and holds a plurality of batteries arranged side by side in a horizontal direction.

  There exists a thing shown by patent document 1 as this kind of prior art. FIG. 6 is an exploded perspective view showing a battery holding structure of a conventional work machine shown in Patent Document 1. As shown in FIG.

  In this prior art, a case 31 is disposed on a side frame 30, and a first battery 32 and a second battery 33 are accommodated in the case 31 side by side in the horizontal direction. A cover plate 35 is provided on the upper surface of each of the first and second batteries 32 and 33 to restrict the movement of one of the pair of ridges extending in the direction in which the batteries 32 and 33 are juxtaposed, The cover plate 35 and the lower connecting plate 36 extending from the bottom of the case 31 are hanger bolts that are erected along one rising surface of the batteries 32 and 33 that are connected to the one ridge described above. 37 and 38 are connected.

  The hanger bolts 37 and 38 are inserted into the connection holes 36a and 36b formed in the lower connection plate 36, respectively, and are provided with hook portions at the lower ends. The hanger bolts 37 and 38 are connected to the lower connection plate 36 by these hook portions. Is attached to. The upper ends of the hanger bolts 37 and 38 are inserted into holes formed in the cover plate 35 and fastened to the cover plate 35 with nuts 39 and 40.

On the back side of the case 31, there are upper connection plates 41, 42 that are welded to the case 31 and are erected along the other rising surface located on the opposite side of the above-described one rising surface of the batteries 32, 33. The upper connection plates 41 and 42 and the cover plate 35 are connected to each other by round bars 43 and 44 whose one ends are welded to the cover plate 35. The end portions of the round bars 43, 44 located on the upper connecting plates 41, 42 side are inserted into connecting holes 41a, 42a formed in the upper connecting plates 41, 42, and are provided with hook portions. Thus, the round bars 43 and 44 are engaged with the upper connecting plates 41 and 42.
Japanese Patent Laid-Open No. 11-342809

  In the conventional technique described above, the case 31, the cover plate 35, the lower connecting member 36, the hanger bolts 37 and 38, the upper connecting plates 41 and 42, and the round bar 43 are used to hold the first and second batteries 32 and 33. , 44 are required, and the number of members is large. In connection with this, the man-hours which connect and assemble each member also increase. As a result, the prior art has a problem that the manufacturing cost tends to be high.

  The present invention has been made from the above-described prior art, and an object of the present invention is to provide a work machine battery holding structure capable of holding a plurality of batteries with a small number of members.

  In order to achieve the above object, the present invention provides a battery holding structure for a work machine in which a plurality of batteries are arranged in parallel in the horizontal direction on the machine body of the work machine, and the battery on the upper surface of each of the plurality of batteries. A cover plate that regulates the movement of one of the pair of ridges extending in the juxtaposed direction, and one of the batteries that are engaged with the machine body and that are connected to the one ridge. A leg portion erected along the surface and an engagement portion that engages with the upper surface of each of the batteries, and a bracket that holds the cover plate, and is positioned on the opposite side of the one rising surface of the battery And a standing member fixed along the other rising surface and fixed to the bracket.

  In the present invention configured as described above, since the bracket is engaged with the airframe side, the battery can be held using the airframe side without requiring a case for accommodating a plurality of batteries. Further, since the bracket has an engaging portion that engages with the upper surface of each battery, the battery can be held without requiring a member such as a round bar that engages with the upper surface of the battery separately from the bracket. Accordingly, a plurality of batteries can be held with a small number of members.

  Further, the present invention is characterized in that, in the above invention, the cover plate is provided integrally with the bracket.

  In the present invention configured as described above, since the cover plate and the bracket become one member, the number of members can be further reduced.

  Further, the present invention is characterized in that, in the above-mentioned invention, the bracket has a hook portion which can be inserted into a hole formed on the machine body side at a lower end.

  In the present invention configured as described above, the bracket can be easily engaged with the airframe side by inserting the hook portion into the hole and engaging with the peripheral portion of the hole.

  Further, the present invention is characterized in that in the above invention, a fastening means for fastening the bracket and the standing member is provided.

  In the present invention configured as above, the bracket and the standing member can be firmly fastened by the fastening means in a state where the engaging portion of the bracket is engaged with the upper surface of each battery.

  Further, the present invention is characterized in that, in the above invention, the brackets are individually provided corresponding to the respective batteries, and the adjacent batteries are held with a gap.

  In the present invention configured as described above, even if one of the two batteries moves minutely for some reason, the movement is not transmitted as a force for moving the other battery due to the gap.

  The present invention can hold a plurality of batteries with a small number of members, and accordingly, the number of work steps for connecting and assembling each member can be reduced. As a result, the present invention can reduce the manufacturing cost as compared with the prior art.

  The best mode for carrying out a battery holding structure for a work machine according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of a hydraulic excavator cited as an example of a working machine provided with the battery holding structure of the present invention. The hydraulic excavator shown in FIG. 1 includes a traveling body 1 and a revolving body 2 disposed on the traveling body 1. An operator cab 3, an engine room 4, and a counterweight 5 are disposed on the revolving structure 2. A front work machine 6 is attached to the front side of the swing body 2 so as to be rotatable in the vertical direction with respect to the swing body 2. The front work machine 6 includes a boom 7, an arm 8, a bucket 9, a boom cylinder 10, an arm cylinder 11, and a bucket cylinder 12. The first battery 13 and the second battery 14 targeted by the present embodiment are arranged on a side frame 15 in the engine room 4, for example, as will be described later.

  2 is a perspective view of a main part of an embodiment of a battery holding structure for a work machine according to the present invention as viewed from above, and FIG. 3 is a perspective view of the main part of this embodiment as shown in FIG. 2 as viewed from below. 4 is a perspective view showing a state in which the side frame is removed from the state shown in FIG. 2, and FIG. 5 is a perspective view showing the overall configuration of the present embodiment.

  As shown in FIGS. 2 to 4, in the battery holding structure of the present embodiment, a plurality of, for example, two batteries of the first battery 13 and the second battery 14 are held in parallel in the horizontal direction. It is like that.

  In this embodiment, as shown in FIGS. 2 to 5, one of the ridges of the pair of ridges extending in the battery juxtaposition direction of the upper surfaces 13b, 14b of the first and second batteries 13, 14 respectively. A cover plate 16 that restricts movement is provided. Further, the legs are erected along one of the rising surfaces 13a and 14a of the batteries 13 and 14 that are attached to the body side, for example, the side frame 15 that forms a turning frame, and that are connected to the one ridge described above. The brackets 17 and 18 are provided. The brackets 17 and 18 hold the cover plate 16. The brackets 17 and 18 have engaging portions 17 b and 18 b that engage with the top surfaces 13 b and 14 b of the batteries 17 and 14, respectively. Further, as shown in FIG. 5, the batteries 13 and 14 are erected along the other rising surface located on the opposite side of the above-described one rising surface 13 a and 14 a, and are fixed to the brackets 17 and 18, respectively. The installation members 19 and 20 are provided. These standing members 19 and 20 are arranged, for example, on the side close to the side plate 4a of the engine room 4 shown in FIG.

  The cover plate 16 described above is provided integrally with the brackets 17 and 18 by welding, for example. Further, as shown in FIG. 3, each of the brackets 17 and 18 includes hook portions 17c and 18c that can be inserted into holes 15a and 15b formed in the side frame 15 at the lower end. The bracket 17 and the standing member 19 and the bracket 18 and the standing member 20 are firmly fastened by fastening means, for example, a bolt 21 and a nut 22 and a bolt 23 and a nut 24 shown in FIG. Further, brackets 17 and 18 are individually provided corresponding to the two batteries 13 and 14, respectively. That is, a pair of brackets 17 and 18 are provided, and as shown in FIGS. 2 to 4, the adjacent batteries 13 and 14 are held by the brackets 17 and 18 with a gap 25 therebetween.

  In order to hold the first and second batteries 13 and 14 arranged side by side in the horizontal direction on the side frame 15 according to the present embodiment, for example, while tilting an integrated object composed of a pair of brackets 17 and 18 and a cover plate 16, for example. The hook portions 17a and 18a of the brackets 17 and 18 are inserted into the holes 15a and 15b of the side frame 15, and then the one body is raised. As a result, as shown in FIG. 3, the hook portions 17 c and 18 c of the brackets 17 and 18 are engaged with the peripheral portions of the holes 15 a and 15 b of the side frame 15. Further, the leg portions 17a and 18a of the brackets 17 and 18 are positioned along one of the rising surfaces 13a and 14a of the first and second batteries 13 and 14, and the cover plate 16 is disposed as shown in FIGS. The upper surfaces 13b and 14b of the first and second batteries 13 and 14 are engaged with one of the pair of ridges. Further, as shown in FIGS. 2 to 4, the engaging portions 17 b and 18 b of the brackets 17 and 18 are engaged with the upper surfaces 13 b and 14 b of the batteries 13 and 14.

  In such a state, as shown in FIG. 5, the standing members 19, 20 are brought into contact with the back surfaces of the engaging portions 17 b, 18 b of the brackets 17, 18 to form holes formed in the standing members 19, 20. Are matched with the holes formed in the brackets 17 and 18, and the bolts 21 and 23 are inserted into the holes, respectively, and tightened with the nuts 22 and 24. Therefore, the brackets 17 and 18 and the standing members 19 and 20 are fixed integrally. Thereby, the standing members 19 and 20 are in contact with the other rising surfaces of the first and second batteries 13 and 14. That is, each of the first and second batteries 13 and 14 is connected to the direction in which one of the rising surfaces 13a and 14a is connected to the other rising surface by the cover plate 16 and the standing members 19 and 20. It is held so as not to move, and is held so as not to move upward by the engaging portions 17b, 18b of the brackets 17, 18. Accordingly, the first and second batteries 13 and 14 are firmly held in the juxtaposed direction of the first and second batteries 13 and 14.

  According to the present embodiment configured as described above, the brackets 17 and 18 are engaged with the side frame 15 that forms the revolving frame as the airframe, so that the special batteries for accommodating the first and second batteries 13 and 14 are accommodated. The batteries 13 and 14 can be held using the side frame 15 without requiring a case or the like. Further, since the brackets 17 and 18 have engaging portions 17b and 18b that engage with the upper surfaces 13b and 14b of the batteries 13 and 14, respectively, the upper surfaces 13b and 14b of the batteries 13 and 14 are separated from the brackets 17 and 18. The batteries 13 and 14 can be held without requiring a special member such as a round bar that engages with the battery. Therefore, the first and second batteries 13 and 14 can be held with a small number of members, and accordingly, the number of work steps for connecting and assembling each member can be reduced. As a result, production costs can be reduced.

  Further, since the cover plate 16 is provided integrally with the brackets 17 and 18, and the cover plate 16 and the brackets 17 and 18 are a single member, the number of members can also be reduced in this respect.

  Further, since the brackets 17 and 18 have hook portions 17c and 18c that can be inserted into the holes 15a and 15b of the side frame 15 at the lower ends, the hook portions 17c and 18c are inserted into the holes 15a and 15b to form the holes 15a, 15b. By engaging with the peripheral edge of 15b, the brackets 17 and 18 can be easily engaged with the side frame 15, and the assembly work can be performed efficiently.

  In addition, since the bolts 21 and nuts 22 and the bolts 22 and nuts 24 for fastening the brackets 17 and 18 and the standing members 19 and 20 respectively are provided, the bolts 21 and nuts 22 and the bolts 23 and nuts 24 are used. The brackets 17 and 18 and the standing members 19 and 20 are connected to the cover plate 16, the engaging portions 17 b and 18 b of the brackets 17 and 18, and the standing members 19 and 20 are respectively connected to the first and second batteries 13 and 14. Can be firmly fastened so as to be in contact with each other, contributing to the realization of a stable holding structure for the first and second batteries 17 and 18.

  In addition, a pair of brackets 17 and 18 are provided corresponding to each of the first and second batteries 13 and 14, and the adjacent batteries 13 and 14 are held with a gap 25 therebetween. Even if one of the batteries 13 and 14 causes a slight movement for some reason such as sudden vibration such as the bucket colliding with rock during excavation, the movement is caused by the gap 25. It is not reported as the power to move the battery. As a result, it is possible to prevent the cover plate 16, the brackets 17 and 18, the standing members 19 and 20 and the like from being damaged due to the movement of the battery.

1 is a perspective view of a hydraulic excavator cited as an example of a working machine provided with a battery holding structure of the present invention. It is the perspective view which looked at the principal part of one Embodiment of the battery holding structure of the working machine which concerns on this invention from the upper direction. It is the perspective view which looked at the principal part of this embodiment shown in FIG. 2 from the downward direction. FIG. 3 is a perspective view showing a state where a side frame is removed from the state shown in FIG. 2. It is a perspective view which shows the whole structure of this embodiment. It is a perspective view which shows the battery holding structure of the conventional working machine.

Explanation of symbols

2 revolving body 4 engine room 4a side plate 13 first battery 13a rising surface 13b upper surface 14 second battery 14a rising surface 14b upper surface 15 side frame 15a hole 15b hole 16 cover plate 17 bracket 17a leg portion 17b engaging portion 17c hook portion 18 bracket 18a Leg part 18b Engagement part 18c Hook part 19 Standing member 20 Standing member 21 Bolt 22 Nut 23 Bolt 24 Nut 25 Crevice

Claims (5)

In the work machine battery holding structure for holding a plurality of batteries arranged side by side in the horizontal direction on the machine body of the work machine,
A cover plate for restricting movement of one of the pair of ridges extending in the battery juxtaposition direction on the upper surface of each of the plurality of batteries;
There is a leg portion that is engaged with the one side of the battery and is provided along one rising surface of the battery, and an engaging portion that engages with the upper surface of the battery. And a bracket for holding the cover plate,
A battery holding structure for a working machine, comprising: a standing member which is erected along the other rising surface located on the opposite side of the one rising surface of the battery and is fixed to the bracket. In the invention of claim 1,
A battery holding structure for a working machine, wherein the cover plate is provided integrally with the bracket. In the invention of claim 1,
A battery holding structure for a work machine, wherein the bracket has a hook portion that can be inserted into a hole formed on the machine body side at a lower end. In the invention of claim 1,
A battery holding structure for a working machine, comprising fastening means for fastening the bracket and the standing member. In the invention of claim 1,
A battery holding structure for a working machine, wherein the bracket is individually provided for each of the batteries, and the adjacent batteries are held with a gap.

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