JP2006283504A - Suspension device for construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suspension device for a construction machine which facilitates the placing work of a wire rope for suspension work. <P>SOLUTION: In the suspension device for a construction machine, an opening part 14 for inspection is formed in a rear center of a counter weight 6, and a hood 15 is openably/closeably provided in a manner of covering the opening part 14 and an upper part of an engine. In the suspension device, a lower end of a suspension body 17 is connected to the counter weight 6 inside the hood 15, and the front end is protruded from an upper face of the hood 15 through an insertion hole provided in the hood 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a suspension device for a construction machine such as a hydraulic excavator, and more particularly to a suspension device for a construction machine that can be easily hung.

  Construction machines such as hydraulic excavators, especially construction machines such as small hydraulic excavators, have a larger installation space for equipment and equipment such as engines and counterweights on the revolving structure, compared to construction machines such as large hydraulic excavators. Therefore, an opening for engine inspection is provided from the upper surface to the center of the counterweight installed at the rear of the revolving unit, and the hood covers the opening and the upper part of the engine. It can be opened and closed.

  Further, since the counterweight and the lifting tool for lifting the construction machine are provided on the counterweight in the hood, an opening for pulling out the wire rope locked to the lifting tool to the outside of the hood during the lifting work and Usually, there is a hood provided with a lid that can be opened and closed to close the opening (see, for example, Patent Document 1).

JP 2002-256594 A

  In the above prior art, when one end of the wire rope is hung on the counterweight side hanging tool, after opening the lid provided on the hood and opening the opening, one end of the wire rope is introduced into the hood through the opening, It hangs on the lifting tool on the counterweight side. When the suspension work is finished, remove one end of the wire rope from the counterweight side lifting tool, pull it out of the hood through the opening, and then close the lid so that dust does not enter the hood from the opening. Work to close the opening.

  As described above, in the above-described prior art, since a preliminary setup work for the hanging work is necessary, there is a grudge that the workability is not good. In particular, in the hanging work when the construction machine has to be moved quickly, there is a frustration because the above-described pre-setup work is involved.

  The present invention has been made based on the above-described matters, and an object of the present invention is to provide a hanging device for a construction machine that can facilitate a wire rope hanging work for a hanging work.

  In order to achieve the above object, according to the first aspect of the present invention, an opening for inspection is provided in the center of the rear part of the counterweight, and a hood is provided so as to be openable and closable so as to cover the opening and the upper part of the engine. In the suspension device for a construction machine in which a suspension is provided at an opening for inspecting the counterweight in the hood, a suspension insertion hole is provided on the counterweight side of the hood, and a suspension concrete tip is used for the insertion. It protrudes from the upper surface of the hood through a hole, and its lower end is connected to a counterweight in the hood.

  Further, the second invention is provided with an opening for inspection at the center of the rear part of the counterweight, and a hood that can be opened and closed so as to cover the opening and the upper part of the engine, for checking the counterweight in the hood. In the suspension device of a construction machine provided with a hanging tool in the opening, a suspension specific insertion hole is provided on the counterweight side of the hood, and a suspension specific distal end protrudes from the upper surface of the hood through the insertion hole, The lower end is connected to a counterweight suspension in the hood.

  Furthermore, the third invention is provided with an opening for inspection at the center of the rear portion of the counterweight, and a hood that can be opened and closed so as to cover the opening and the upper part of the engine, for checking the counterweight in the hood. In the suspension device of a construction machine provided with a hanging tool in the opening, a suspension specific insertion hole is provided on the counterweight side of the hood, and a suspension specific distal end protrudes from the upper surface of the hood through the insertion hole, A lower end is rotatably connected to a suspension tool of a counterweight in the hood, and means for holding the suspension specific posture is provided at the lower end of the suspension specific.

  According to a fourth aspect of the present invention, an inspection opening is provided in the center of the rear portion of the counterweight, and a hood is provided so as to be openable and closable so as to cover the opening and the upper portion of the engine. In the suspension device of a construction machine provided with a hanging tool in the opening, an opening and a lid that can be opened and closed are provided on the counterweight side of the hood, a hanging insertion hole is provided in the lid, A tip is projected from the upper surface of the hood through the insertion hole, and a lower end thereof is rotatably connected to a counterweight suspension in the hood, and the suspension specific posture is held at the lower end of the suspension specific. Means are provided.

  Furthermore, a fifth invention is characterized in that in any one of the first to fourth inventions, a dust cover for the insertion hole for the suspension is provided.

  According to the present invention, the suspension tip connected to the counterweight suspension is protruded upward from the hood on the counterweight side, so that one end of the wire rope can be immediately hooked or removed from the suspension concrete tip. As a result, the wire rope hanging work becomes easy and the working time can be shortened. As a result, the moving work of the construction machine is improved.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a construction machine suspension apparatus according to the present invention will be described below with reference to the drawings.
FIG. 1 is a front view of a construction machine provided with an embodiment of the suspension device of the present invention, and FIG. 2 is a rear view thereof. In these drawings, the construction machine includes a main body 1, an endless track type traveling body 2 provided on both sides of the main body 1, a revolving body 3 provided on the main body 1 so as to be able to turn, and the revolving body 3. A driver's cab 4 provided on the front left side of the engine, an engine cover 5 covering the engine, a hydraulic power source and the like disposed in the center of the revolving structure 3, a counterweight 6 provided at the rear of the revolving structure 3, And a front device 7 installed at the front.

  The front device 7 includes a boom 8 provided at the front portion of the revolving body 3 so as to be able to move up and down, an arm 9 provided at the tip of the boom 8 so as to be rotatable, and a pivot provided at the tip of the arm 9. The boom 8 is driven by a boom operation cylinder 11, the arm 9 is driven by an arm operation cylinder 12, and the excavation bucket 10 is driven by a bucket operation cylinder 13.

  At the center of the rear part of the counterweight 6 described above, an inspection opening 14 for inspecting the engine or the like is formed as shown in FIG. A hood 15 that covers the opening 14 for inspection and the upper opening of the engine cover 5 is provided on the upper surface of the engine cover 5 so as to be openable and closable.

  On the counterweight 6 side of the hood 15, an opening (described later) and an openable / closable lid 16 that closes the opening are provided. The lid 16 is provided with a hanging insertion hole (described later). Through the insertion hole of the suspension concrete, the tip of the suspension concrete 17 constituting the suspension device of the present invention is arranged so as to protrude upward from the hood 15. A wire rope for hanging work is hung on the tip of the hanging concrete 17.

  The detailed configuration of the suspension concrete 17 constituting the suspension device of the present invention described above will be described with reference to FIGS. 3 is an enlarged plan view showing the rear part of the construction machine shown in FIG. 1, FIG. 4 is an enlarged front view of the suspension device of the present invention as seen from the arrow IV-IV in FIG. 3, and FIG. 6 is an enlarged side view of the suspension device of the present invention as viewed from the arrow V, and FIG. 6 is an enlarged front view of the means for holding the specific posture of the suspension constituting the suspension device of the present invention as viewed from the arrow VI-VI in FIG. FIG. In these drawings, the same reference numerals as those in FIGS. 1 and 2 are the same parts.

  As shown in FIG. 3, the hood 15 described above is provided so as to be openable and closable so as to cover the inspection opening 14 at the center of the rear portion of the counterweight 6 and the upper opening 19 of the engine cover 5 by a hinge 18. The hood 15 is provided with an opening 20 in the width direction of the swivel body 3 (up and down on the paper surface of FIG. 3). The opening 16 is provided with a lid 16 that can be opened and closed by a hinge 21.

  The lid 16 is provided with two hanging concrete insertion holes 22 with a gap therebetween. The suspension hole 23 is provided with a dustproof cover 23. These dust-proof covers 23 are each provided with a notch so that the tip of the above-described hanging concrete 17 can protrude. Thereby, the tip of each suspension member 17 protrudes upward through the notch of the dust cover 23 as shown in FIG.

  As shown in FIG. 4, a wire rope insertion hole 17 </ b> A is provided at the distal end side of the hanging concrete 17, and a connecting bracket 24 provided side by side as shown in FIG. 5 is provided at the lower end. Further, a reinforcing member 17 </ b> B is provided on the opposing inner side surface of the hanging concrete 17. The connecting bracket 24 is rotatably connected to a suspension 25 of the counterweight 6 that is provided apart from the flat portion 14A of the opening 14 in the counterweight 6 by a bolt 26.

  As shown in FIGS. 5 and 6, means 26 for holding the posture of the hanging concrete 17 is provided on each outer side surface of the opposing connecting bracket 24. The suspension specific posture holding means 26 sets a recommended suspension angle that is set based on the posture of the front device 7 shown in FIG. 1 and the main body side of the construction machine.

  As shown in FIGS. 5 and 6, the suspended specific posture holding means 26 includes a first holding body 28 fixed to the side surface of the connecting bracket 24 with a bolt 27, and the swiveling body 3 on the first holding body 28. A second holding body 29 provided apart from each other in the front-rear direction (left-right direction in FIG. 6), and an elastic stopper 31 such as rubber fixed to the lower surface of the distal end of the second holding body 29 by a screw 30. The lower end of the elastic stopper 31 is in contact with the flat portion 14 </ b> A of the opening 14 in the counterweight 6.

  Therefore, when lifting, the suspension angle of the suspension concrete 17 can be given a margin so that an unreasonable load is not applied to the suspension concrete 17 and the elastic stopper 31 allows the load to swing when the construction machine is suspended. Is suppressed. At the time of non-lifting, the elastic stopper 31 returns to the original position. Further, since the elastic stopper 31 can be deformed by tightening or loosening the screws 30, the posture of the suspension concrete 17 when not suspended can be set to a desired angle.

Next, operation | movement of one Embodiment of the suspension apparatus of this invention mentioned above is demonstrated using FIG.
First, one end of one wire rope W1 hung on the front device 7 side and one end of two wire ropes W2 hung on the rear portion of the construction machine, that is, the counterweight 6 side, are hung on the hook F of a cargo handling machine such as a crane. . Next, the other end of the wire rope W <b> 2 is connected to the rope hole 17 </ b> A at the tip of the hanging concrete 17 protruding from the upper surface of the hood 15 with a hook or the like while adjusting the position of the hook F by the cargo handling machine. Further, the other end of the wire rope W <b> 1 is hung from the lower side of the boom 8 through a pad P provided at the upper corner portion and the lower corner portion of the boom 8 and hooked on the hook F. If the hook F is raised in this state, the construction machine can be lifted and the construction machine can be moved to another location.

  When lifting, the suspension specific posture holding means 26 can provide a sufficient margin for the suspension angle of the suspension concrete 17 so that an unreasonable load is not applied to the suspension concrete 17 and the elastic stopper 31 allows the construction machine to be suspended. The run-out of the load is suppressed.

  After the construction machine is moved to another place by the cargo handling machine, the wire ropes W1 and W2 hung between the hook F and the construction machine can be removed by an operation reverse to the above. At the time of non-lifting, the hanging concrete 17 is returned to the original position by the elastic stopper 31 of the hanging concrete posture holding means 26.

  As described above, according to the embodiment of the present invention, the other end of the wire rope W <b> 2 hung on the counterweight 6 side is easily inserted into the rope hole 17 </ b> A at the tip of the hanging concrete 17 protruding from the upper surface of the hood 15. Since it can be hooked, the wire rope can be easily detached and the operation time can be shortened. As a result, the moving work of the construction machine can be improved.

  Further, since the suspension concrete 17 is set to a suspension angle that should be recommended by the suspension concrete posture holding means 26, the suspension angle of the wire rope is optimized, and the construction machine can be moved in a stable state. Further, since the dustproof cover 23 is provided in the insertion hole 22 of the hanging concrete, the intrusion of dust into the engine cover 5 can be prevented.

  In the above-described embodiment, the hanging specific insertion hole 22 is provided in the lid 16 on the upper surface of the hood 15, but the lid 16 and its opening 20 are not provided, and the hanging specific insertion hole 22 is provided in the hood 15. It is also possible to provide. Also in this case, it is preferable to provide a dustproof cover 23 in order to prevent dust from entering the engine cover 5.

  According to this embodiment, similarly to the above-described embodiment, the wire rope can be easily detached and the operation time can be shortened. Moreover, since the attachment of the lid 16 to the hood 15 becomes unnecessary, the number of parts and the cost can be reduced. Furthermore, since the hanging concrete 17 is attached to the existing hanging tool 25, the attaching operation is simple.

  In the above-described embodiment, the suspension specific posture holding means 26 for setting a suspension angle that should be recommended by the manufacturer is provided in the lower part of the suspension concrete 17, but it is also possible to use without attaching it. Furthermore, although the lower part of the suspension concrete 17 was connected to the suspension tool 25 previously provided in the counterweight 6, a suspension tool may be provided separately from this suspension tool 25, and the lower part of the suspension concrete 17 may be connected to this suspension tool. Is possible.

It is a front view of the construction machine provided with one embodiment of the suspension device of the present invention. It is a rear view of the construction machine provided with one Embodiment of the suspension apparatus of this invention shown in FIG. It is a top view which expands and shows the rear part of the construction machine provided with one Embodiment of the suspension apparatus of this invention shown in FIG. It is the enlarged front view which looked at the suspension apparatus of this invention from the IV-IV arrow of FIG. It is the expanded side view which looked at the suspension apparatus of this invention from the VV arrow view of FIG. It is the enlarged front view which looked at the means to hold | maintain the specific posture of the suspension which comprises the suspension apparatus of this invention from the VI-VI arrow view of FIG. It is a front view which shows the state hung by the wire rope on the construction machine using the suspension apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Endless track type traveling body 3 Revolving body 4 Driver's cab 5 Engine cover 6 Counterweight 7 Front device 14 Inspection opening 15 Hood 16 Lid 17 Suspension concrete 22 Suspension concrete insertion hole 23 Dustproof cover 25 Suspension 26 Hanging concrete posture holding means

Claims (5)

  An opening for inspection is provided at the center of the rear part of the counterweight, and a hood is provided so as to be openable and closable so as to cover the opening and the upper part of the engine, and a hanging tool is provided at the opening for inspection of the counterweight in the hood. In the suspension device for a construction machine, a suspension specific insertion hole is provided on the counterweight side of the hood, and a tip of the suspension specific is protruded from the upper surface of the hood through the insertion hole, and a lower end thereof is counterweight in the hood. A suspension device for a construction machine, characterized in that it is connected to.   An opening for inspection is provided at the center of the rear part of the counterweight, and a hood is provided so as to be openable and closable so as to cover the opening and the upper part of the engine, and a hanging tool is provided at the opening for inspection of the counterweight in the hood. In the suspension device for a construction machine, a suspension specific insertion hole is provided on the counterweight side of the hood, and a tip of the suspension specific is protruded from the upper surface of the hood through the insertion hole, and a lower end thereof is counterweight in the hood. A suspension device for a construction machine, wherein the suspension device is connected to a suspension tool.   An opening for inspection is provided at the center of the rear part of the counterweight, and a hood is provided so as to be openable and closable so as to cover the opening and the upper part of the engine, and a hanging tool is provided at the opening for inspection of the counterweight in the hood. In the suspension device for a construction machine, a suspension specific insertion hole is provided on the counterweight side of the hood, and a tip of the suspension specific is protruded from the upper surface of the hood through the insertion hole, and a lower end thereof is counterweight in the hood. A suspension device for a construction machine, wherein the suspension device is rotatably connected to a suspension tool, and means for holding the suspension posture is provided at a lower end of the suspension member.   An opening for inspection is provided at the center of the rear part of the counterweight, and a hood is provided so as to be openable and closable so as to cover the opening and the upper part of the engine, and a hanging tool is provided at the opening for inspection of the counterweight in the hood. In the suspension device for a construction machine, an opening and an openable / closable lid for closing the opening are provided on the counterweight side of the hood, a hanging concrete insertion hole is provided in the lid, and a suspension concrete tip is passed through the insertion hole. The upper portion of the hood protrudes from the upper end of the hood, the lower end of the hood is pivotably connected to a suspension tool of the counterweight, and the lower end of the hanging concrete is provided with means for maintaining the posture of the hanging concrete. Construction equipment hanging device.   The suspension device for a construction machine according to any one of claims 1 to 4, wherein a dustproof cover for the insertion hole of the suspension concrete is provided.

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