JP2019065518A - Construction machine - Google Patents

Abstract

To provide a construction machine capable of preventing a wire and a shackle from damaging a machine body and further damaging an engine due to bending of the wire after a lifting operation and a shackle falling due to the bending.SOLUTION: A construction machine (1) which has a machine body (5), an engine (10) on the machine body, and a counterweight (11) mounted behind the engine comprises a plurality of suspension rings (30) provided above the counterweight and extended upward. The suspension ring is provided with a suspension hole (34) opened in the front-rear direction of the machine body.SELECTED DRAWING: Figure 1

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a construction machine, and more particularly to a technology provided with a suspension ring for lifting a construction machine by a crane or the like.

  For example, a relatively small hydraulic excavator can be equipped with not only a digging bucket but also a ripper, a breaker and a crusher at its front attachment. Therefore, since this type of hydraulic excavator is applicable not only to digging work but also to crushing work of buildings and rocks, the work application is extensive and the work site is reached by self-propelled There are many cases where you can not do it.

  Therefore, the hydraulic shovel is lifted by a wire rope by a crane etc., and is transported to the work site, but for this purpose, it is necessary to equip the hydraulic shovel with a ring for retaining the wire rope. (Patent Document 1).

JP 2002-256594 A

By the way, the operation of hooking the wire rope to the suspension ring equipped on the hydraulic shovel is generally performed by attaching a shackle provided at one end of the wire rope to the suspension ring.
Further, according to the technology disclosed in Patent Document 1, when the lifting ring is hidden by the cover portion of the opening and closing hood and the hydraulic shovel is lifted, the cover is opened in the front direction of the machine to shackle the lifting ring. It will be installed.

  However, when the cover is opened in the forward direction of the machine and the lifting operation is performed, the wire may be bent after the lifting operation so that the cover may be damaged by falling on the cover side. Also, even if the cover is opened to a position where it does not contact the wire, for example, when the wire bends after the lifting operation, there is a possibility that the shackle will overturn and damage the design surface or the like of the airframe. In particular, in recent years, the engine tends to be upsized by mounting an SCR catalyst or the like for reducing NOx contained in exhaust gas for environmental measures etc. Therefore, the location where the ring is provided is the portion covered by the cover It is difficult to provide, and it will be provided on a design surface such as a counterweight.

Therefore, when the wire bends after the lifting operation as described above, the shackle may roll and damage the design surface of the counterweight.
The present invention has been made in view of such problems, and the object of the present invention is to bend the wire after the lifting work and the shackle to fall due to the bending, and the wire and shackle damage the airframe, and further the engine. An object of the present invention is to provide a construction machine that can be prevented from being damaged.

  In order to achieve the above object, a construction machine according to the present invention includes an airframe and a construction machine having an engine and a counterweight mounted on the rear side of the airframe. The suspension ring is provided with a suspension hole which is opened in the front-rear direction of the machine body.

  Thus, by arranging a plurality of suspension rings provided with suspension holes that open in the front-rear direction on the upper part of the counterweight, a shackle provided at one end of the wire for lifting work of the construction machine penetrates the suspension holes, for example. After the lifting operation, i.e., when the construction machine is grounded and the wire is bent, the shackle pivots about the opening direction of the hanging hole. Therefore, because the opening direction of the hanging hole is the front and back direction, the shackle will turn to the left and right direction by gravity and fall down, in other words it prevents the shackle and the wire from falling forward than the counterweight and damaging the engine. It is possible to do.

As another mode, it is preferable to have a guide part which is provided on the left and right of the hanging ring and extends upward from the hanging hole.
As a result, the shackle is suspended after the lifting operation because it has guide portions extending upward from the suspending hole in the direction in which the shackle pivots around the opening direction of the lifting hole after the lifting operation. It is pivoted about the opening direction of the hole and supported by a guide portion extending upward from the hanging hole. That is, it is possible to prevent the shackle from falling below the guide portion and to prevent the shackle from hitting against the counterweight which is a design surface and damaging it.

In another aspect, it is preferable that the upper end of the guide portion is bent in a direction away from the ring as it extends upward.
Thus, by bending the upper end of the guide portion in the direction of separating from the suspension ring, it is possible to prevent the guide portion from interfering with the attaching operation when the shackle is attached to the hanging hole.

In another aspect, the suspension ring is a flat plate extending in the left-right direction of the machine body, the guide portion is a pair of left and right flat plate shapes extending in the front-rear direction of the machine body, and the suspension ring and the guide portion are coupled Alternatively, they are preferably integrally formed.
As a result, by welding a pair of left and right flat plate shapes extending in the front and rear direction to the ring extending in the left and right direction, the force applied in the front and rear direction of the ring can be reinforced by the guide portion Be done.

As another aspect, it is preferable that the counterweight further includes a protruding portion that protrudes rearward, and the ring is provided to the protruding portion.
As a result, the protrusion provided on the counterweight protrudes rearward, and by providing a ring on the protrusion, the center of gravity of the counterweight becomes more rearward, and the effect of the counterweight is added to the rear side of the machine body It is possible to increase the force in the direction of gravity.

  According to the construction machine of the present invention, since a plurality of the rings provided with the hanging holes opened in the front and rear direction are disposed on the upper part of the counterweight, for example, a shackle provided at one end of the wire for lifting work of the construction machine Is mounted so as to penetrate the suspension hole, and after the lifting operation, ie, when the construction machine is grounded and the wire is bent, the shackle pivots about the opening direction of the suspension hole. Therefore, because the opening direction of the hanging hole is the front and back direction, the shackle will turn to the left and right direction by gravity and fall down, in other words it prevents the shackle and the wire from falling forward than the counterweight and damaging the engine. can do.

  As a result, it is possible to prevent the wire and the shackle from damaging the airframe and further damaging the engine due to the bending of the wire and the rollover of the shackle after the lifting operation.

It is the perspective view which looked the hydraulic shovel from the back. It is a perspective view of a suspension part and a counterweight. It is a top view of the suspension part and counterweight seen from the arrow A in FIG. It is a side view at the time of lifting operation of a hydraulic shovel. It is the perspective view in which the state of the suspension part and the shackle after the lifting operation of a hydraulic shovel was shown. It is the perspective view which formed the suspension part from the H-shaped rod-shaped member.

Hereinafter, an embodiment of the present invention will be described based on the drawings.
Referring to FIG. 1, a perspective view of a hydraulic excavator (construction machine) 1 as a construction machine as viewed from the rear is shown. The hydraulic shovel 1 is configured by a lower traveling body 3 and an upper revolving superstructure (body) 5.
The lower traveling body 3 is a so-called crawler-type traveling device that supports the upper swing body 5 so that the hydraulic shovel 1 can travel.

  The upper swing body 5 is an airframe provided with a front attachment 7, a cockpit 9, an engine 10, and a counterweight 11 and supported by the lower traveling body 3 so as to be rotatable. The front attachment 7 extends forward of the upper swing body 5 from a base (not shown) provided at a central portion on the front side of the upper swing body 5 in the front-rear direction. Further, the front attachment 7 is configured by arranging the boom 13, the arm 15, and the bucket 17 sequentially from the base. That is, in the front attachment 7, the boom 13 and the arm 15 are rotatably connected at the first joint 19, and the arm 15 and the bucket 17 are rotatably connected at the second joint 21. By rotating the boom 13, the arm 15, and the bucket 17 at the first joint 19 and the second joint 21, respectively, it is possible to perform an excavation operation and the like. Further, boom suspending portions 14 are respectively provided on the left and right of the middle of the boom 13 in the front-rear direction, and one end of the wire 40 is hooked at the time of lifting work of the hydraulic shovel 1 described later. The bucket 17 can be detached and replaced at the second joint 21 and can be replaced by a ripper, a breaker, a crusher and the like.

The cockpit 9 is provided on the left side in the left-right direction on the front side of the upper swing body 5 in the front-rear direction. The cockpit 9 is a cockpit where an operator carries out the operation of the hydraulic shovel 1 such as traveling of the hydraulic shovel 1 by driving the lower traveling body 3 and operation of the front attachment 7.
The engine 10 is provided in the front-rear direction rear of the upper swing body 5, that is, in the rear of the upper swing body 5 and the front attachment 7. The engine 10 is a drive source for driving the lower traveling body 3, pivoting the upper swing body 5, and operating the front attachment 7.

  The counterweight 11 is provided at the rear end of the upper swing body 5 in the front-rear direction, that is, at the rear of the engine 10. Further, the counterweight 11 is formed, for example, by filling a metal can body with iron ore, punchicus and the like, and cementing it. Such a counterweight 11 has its center of gravity behind the upper turning body 5 considering that the center of gravity moves forward in the front-rear direction of the top turning body 5 as when the front attachment 7 lifts a heavy object with the bucket 17. The center of gravity of the upper swing body 5 is deviated forward by providing it, in order to prevent the hydraulic excavator 1 from tipping over.

  Further, at the upper part in the vertical direction of the counterweight 11, two protruding parts 22 configured to protrude so as to bulge backward in the front-rear direction are provided side by side in the left-right direction. Thus, the center of gravity of the counterweight 11 is closer to the rear of the hydraulic shovel 1. That is, when working using the front attachment 7, a force in the direction of gravity applied to the front attachment 7 generates a force in the direction of gravity at the front of the hydraulic shovel 1. Since a force in the opposite direction to this force is generated by the projecting portion 22, the hydraulic shovel 1 can be better prevented from falling in the direction of gravity.

Referring to FIG. 2, a perspective view of the hanging portion 23 and the counterweight 11 is shown.
The hanging portion 23 is configured by the hanging ring 30 and the guide portion 32, and is disposed in each of the protruding portions 22 and 22 provided on the counterweight 11. The suspension ring 30 is a flat plate member extending in the left-right direction, in which a suspension hole 34 is provided at the upper side in the vertical direction and opened in the front-rear direction.

  The guide portion 32 is a rectangular flat plate member which is provided by welding to the left and right of the suspension ring 30 and extends in the front-rear direction. Further, the guide portion 32 is bent so as to be separated from the suspension ring 30 as the upper side in the vertical direction extends upward. Furthermore, the upper end of the guide portion 32 extends upward from the hanging hole 34.

Referring to FIG. 3, a view of the hanging portion 23 and the counterweight 11 from the arrow A in FIG. 2 is shown.
The hanging portion 23 is embedded in the counterweight 11 and disposed. Specifically, the hanging portion 23 is provided with a pin 36 at the lower portion in the vertical direction, and is fixed to the counterweight 11 by the pin 36 so that the hanging portion 23 does not come upward from the counterweight 11.

Referring to FIG. 4, a side view of the hydraulic shovel 1 during the lifting operation is shown.
At the time of lifting work, the hydraulic shovel 1 has the wire 40 at the boom suspending portions 14 and 14 provided at the front with the boom 13 and at the lifting rings 30 and 30 of the suspending portions 23 provided with the rear at the counterweight 11 respectively. It is suspended and lifted. Specifically, a shackle 42 provided at one end of the wire 40 is hooked to each of the boom suspension portions 14 and 14 and the suspension rings 30 and 30, and the hydraulic shovel is lifted by lifting the other end of the wire 40 upward in the gravity direction. 1 can be lifted.

  Referring to FIG. 5, the state of the hanging portion 23 and the shackle 42 after the lifting operation of the hydraulic shovel 1 is shown by a perspective view. After the lifting work, that is, when the hydraulic shovel 1 lands on the ground, the shackle 42 descends to the lower part of the periphery of the suspension hole 34 by gravity, and the suspension hole 34 in the left and right direction starting from the portion installed under the suspension hole 34 It pivots around the opening direction of. At this time, the shackle 42 is supported by the guide portion 32. Furthermore, since the wire 40 rotates in the left-right direction about the opening direction of the suspension hole 34 in the left-right direction, the wire 40 bends in the left-right direction of the hydraulic shovel 1 without bending in front of the hydraulic shovel 1. Similarly, the shackle 42 also falls in the left-right direction of the hydraulic shovel 1 without falling to the front side of the hydraulic shovel 1.

  That is, the hanging portion 23 can suppress that the shackle 42 falls toward the engine 10 provided in the hydraulic shovel 1 and that the wire 40 is bent to damage the engine 10. Therefore, by supporting the shackle 42 by the guide portion 32, the shackle 42 can be supported so as not to damage the design surface of the counterweight 11.

  As described above, in the construction machine according to the present invention, the engine 10 and the hydraulic shovel 1 having the counterweight 11 mounted behind the engine 10 are arranged two above the counterweight 11 side by side, A hanging ring 30 extending upward and a hanging hole 34 provided at the upper end of the hanging ring 30 and opening in the front-rear direction are provided.

  Therefore, since the hanging ring 30 provided with the hanging hole 34 opened in the front and rear direction is arranged on the upper part of the counterweight 11 side by side, the shackle 42 is used for lifting work of the hydraulic shovel 1 A shackle 42 provided at one end of the wire 40 is mounted so as to penetrate the hanging hole 34, and after the lifting operation, that is, when the hydraulic shovel 1 is grounded and the wire 40 is bent, the opening direction of the hanging hole 34 To turn. Therefore, since the opening direction of the hanging hole 34 is the front and back direction, the shackle 42 is turned in the left and right direction by gravity and falls down. In other words, the shackle 42 and the wire 40 fall down forward from the counterweight 11 and the engine 10 Can be prevented from being damaged.

In particular, the upper end of the guide portion 32 is bent in a direction away from the suspension ring 30 as it extends upward, so that the guide portion 32 does not get in the way of the attaching operation when attaching the shackle 42 to the suspension hole 34 be able to.
The suspension ring 30 has a flat plate shape extending in the left-right direction, the guide portion 32 has a pair of left and right flat plate shapes extending in the front-rear direction, and the suspension ring 30 and the guide portion 32 are formed by welding. The force applied in the front-rear direction of the suspension ring 30 can be reinforced by the guide portion 32.

This completes the description of the construction machine according to the present invention, but the present invention is not limited to the above embodiment, and can be changed without departing from the scope of the invention.
For example, in this embodiment, although explained using hydraulic excavator 1 as a construction machine, construction machines other than a hydraulic shovel may be used, and it is not restricted only to a hydraulic shovel.

  Moreover, in the present embodiment, the guide portions 32 are provided by welding to the left and right of the suspension ring 30, but welding may not be necessary, and a columnar member having an H-shaped cross section may be processed It may be integrated by forming it. Specifically, a portion corresponding to the middle rod of the H-shaped cross section of the member is cut out and opened to form a suspension ring 30, and a portion corresponding to the remaining rods of the H-shaped cross section is bent to form the guide portion 32 You may do it (figure 6).

1 Hydraulic excavator (construction machine)
5 Upper revolving unit (airframe)
DESCRIPTION OF SYMBOLS 10 Engine 11 Counter weight 22 Protrusion part 23 Suspension part 30 Suspension ring 32 Guide part 34 Suspension hole 40 Wire 42 Shackle

Claims (5)

The aircraft,
In a construction machine having an engine and a counterweight mounted behind the engine on the airframe,
A plurality of ring rings disposed above the counterweight and extending upward,
The hanging ring is provided with a hanging hole opened in the front-rear direction of the machine body,
Construction machinery characterized by.   The construction machine according to claim 1, further comprising: guide portions provided on the left and right of the suspension ring and extending upward from the suspension hole.   The construction machine according to claim 2, wherein the upper end of the guide portion is bent in a direction away from the ring as it extends upward. The suspension ring has a flat plate shape extending in the left-right direction of the airframe,
The guide portion has a pair of left and right flat plate shapes extending in the front-rear direction of the airframe,
The construction machine according to claim 2 or 3, wherein the suspension ring and the guide portion are formed integrally or integrally. The counterweight is further provided with a protrusion that protrudes rearward.
The construction machine according to claim 1, wherein the hanging ring is provided at the projecting portion.

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