JP2007009611A - Bucket for power shovel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bucket for a power shovel capable of efficiently and safely corresponding to a series of working statuses in the construction work of an architecture, civil engineering and the segregation of waste without carrying out the replacement work of the bucket. <P>SOLUTION: The bucket for the power shovel put on the front end of an arm of the power shovel is constituted of a bucket body having an opening, a bracket continuously arranged to the bucket body and pivoted on the arm, a middle gear stored in the bracket and rotatable in the bucket body and a hydraulic mechanism for allowing the middle gear to rotate. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bucket for a power shovel, and more particularly to a bucket for a power shovel that can be used efficiently and safely in a series of work situations in construction work, civil engineering work, and waste sorting work.

  Conventionally, there are a number of buckets attached to the tip of an arm of a power shovel depending on the work. For example, as shown in FIG. 5, the bowl-shaped bucket 1 is attached to the tip of the arm 4 via a bracket 3, and the bucket body 2 is tilted by the expansion and contraction of the bucket cylinder 5, so that it is suitable for normal civil engineering work. It is what is done. There are also buckets that can be held and crushed suitable for dismantling houses and sorting waste.

  However, in order to perform a series of operations in construction, civil engineering work, and waste separation work using the above-described conventional bucket, a bucket corresponding to the work process is prepared, and the bucket is replaced for each work. There was a need. Moreover, this replacement work usually takes 30 minutes or more, and there is a problem that the original construction, civil engineering work, and waste separation work are interrupted.

  On the other hand, a bucket for a power shovel has been proposed that includes a bucket body portion in which an opening is formed and a cover portion that can be opened and closed separately from the opening (see Patent Document 1). .

A clamp bucket that can be used for both excavation work and gripping work has also been introduced (see Patent Document 2).
Japanese Patent Laid-Open No. 10-18335 Registered Utility Model No. 3057171

  However, in the case of the bucket for a power shovel proposed in the above-mentioned Patent Document 1, a series of work in construction and civil engineering work and waste separation work can be performed by one kind of bucket. For example, dismantling of a house In order to perform the leveling work after the work is completed, a mechanism for moving the cover part from the position of the bucket body part along the arm is necessary, and the bucket body and the arm require a complicated structure. In addition, there is a problem in that a large hydraulic mechanism is required to operate the cover part, which is expensive.

  Further, in the case of the clamp bucket proposed in Patent Document 2, the fork portion pivotally attached to the upper portion of the bucket base is opened and closed by the expansion and contraction of the hydraulic cylinder for forks to enable excavation work and gripping work. However, the fork part is opened and closed by the expansion and contraction force of the fork hydraulic cylinder via the upper shaft of the bucket base. For example, when holding a long piece of wood, the fork part is insufficient. There was a risk of slipping between the bucket and the bucket base, which was dangerous for the operator. Moreover, there is a problem that it is not suitable for gripping an article smaller than the width of the bucket base or fork.

  The present invention has been made in view of the above-described problems, and enables a series of operations (excavation, gripping, crushing, etc.) in construction and civil engineering work and waste separation work to be performed with the same bucket, and the gripping work described above. And the middle tooth part used for crushing work can be stored in a bracket that is connected to the bucket body part so that the bucket can be made compact, and no large hydraulic mechanism or additional mechanism is required. It is inexpensive, and the middle tooth portion is rotated by a hydraulic mechanism provided in the bracket so that the tip portion of the middle tooth portion and the tip portion of the bucket abut on the same surface. An object of the present invention is to provide a bucket for a power shovel that can be securely grasped even if an object is smaller than the width and can be safely operated.

  Therefore, a bucket for a power shovel according to the present invention includes a bucket body portion having an opening formed therein, a bracket provided continuously to the bucket body portion and pivotally attached to the arm, and the bucket housed in the bracket. The first feature is that it is constituted by a middle tooth portion that can turn inside the main body portion, and a hydraulic mechanism that can turn the middle tooth portion.

  Further, a second feature is that the front end portion of the middle tooth portion abuts on the front end portion of the bucket main body portion, and the front end surface of the middle tooth portion and the front end surface of the bucket main body portion are aligned with each other. To do.

  Further, the hydraulic mechanism is constituted by a hydraulic cylinder, one end of the hydraulic cylinder is rotatably connected to the inside of the front end side of the middle tooth portion, and the other end is rotatably connected to the bracket. The third feature.

  According to the bucket for a power shovel according to the present invention, the bucket is composed of the bucket body portion having the opening and the middle tooth portion that is housed in the bracket and is rotatable within the bucket body portion. Therefore, it has an excellent effect that a series of work (excavation, gripping, crushing, etc.) in construction and civil engineering work and waste separation work is possible.

  In addition, since the middle tooth portion is configured to be housed in the bracket, the bucket can be made compact, and since an additional mechanism is required for the power shovel body, it is inexpensive and easy to operate. Has the effect of being excellent.

  Furthermore, since the front end portion of the middle tooth portion abuts on the front end portion of the bucket main body portion and the front end surface of the middle tooth portion and the front end surface of the bucket main body portion are aligned with each other, the width of the bucket main body portion is larger. Even a small object can be finely manipulated as if it were tweezers and can be gripped reliably. Moreover, the hydraulic mechanism is composed of a hydraulic cylinder, and one end of the hydraulic cylinder is rotatably connected to the inside of the front end side of the middle tooth portion, and the other end is rotatably connected to the bracket. The gripping force by the middle tooth part and the bucket body part is large, and it has an excellent effect that the work can be performed safely without fear of the object to be gripped slipping.

  Hereinafter, although the bucket for power shovels of this invention is demonstrated based on an Example, it cannot be overemphasized that this invention is not limited to a present Example. FIG. 1 is a perspective view of a bucket for a power shovel according to an embodiment of the present invention, and FIG. 2 is a side view of FIG. 3 is an explanatory view showing an operating state of the middle tooth portion, FIG. 4 is an explanatory front view of FIG. 1, and FIG. 5 is an explanatory side view showing a conventional bucket for a power shovel.

  As shown in FIGS. 1 to 4, a power shovel bucket 1 according to the present invention includes a bucket body 2, a bracket 3 connected to the bucket body 2, a bracket 3, and a bucket 3 that is housed in the bucket body 2. It is comprised from the center tooth part 6 which rotates by (3), and the hydraulic cylinder 7 which rotates the center tooth part 6. FIG.

  Here, the bucket 1 is pivotally attached by a pin shaft between an arm 4 and a bracket 3 of a power shovel (not shown), and can be tilted by expansion and contraction of a bucket cylinder (not shown). Work is done efficiently. Moreover, the connection part with the bracket 3 of the bucket main-body part 2 has opened so that the middle tooth part 6 can be accommodated, and when the middle tooth part 6 is accommodated in the bracket 3, it is closed by the bottom part of the middle tooth part 6. FIG.

  The middle tooth portion 6 has a base end portion pivotally mounted in the bracket 3 by a pin shaft so that the middle tooth portion 6 can be stored, and a base end portion of a hydraulic cylinder 7 provided inside the middle tooth portion 6 is formed by the pin shaft. The end of the cylinder rod 7a of the hydraulic cylinder 7 is rotatably connected to the bracket 3, and is rotatably connected to the inside of the end of the middle tooth portion 6. The bucket body is expanded and contracted by the extension of the cylinder rod 7a of the hydraulic cylinder 7. The inside of the opening of the part 2 can be turned.

  The shape of the middle tooth portion 6 is substantially rod-like, and the tip portion 6a formed protruding from the tip of the middle tooth portion 6 abuts on the tip portion 2a of the bucket body 2 by the rotation of the middle tooth portion 6, and the middle teeth The tip surface 6 b of the part 6 is flush with the tip surface 2 b of the bucket body 2. When the cylinder rod 7a of the hydraulic cylinder 7 is expanded and contracted by this configuration, the middle tooth portion 6 rotates from the bracket 3 to the opening of the bucket body portion 2 as shown in FIG. 3, and the tip portion 6a of the middle tooth portion 6 is It abuts against the tip 2a of the bucket body 2 so that even a small article can be securely gripped by an operation almost like tweezers, and the strong pressure of the hydraulic cylinder 7 is applied to the lower part of the middle tooth 6. Since it can be added directly, there is no risk of slipping even when holding a long wood or the like.

  Next, the operation of this embodiment will be described. First, the cylinder rod 7 a of the hydraulic cylinder 7 is contracted, and the middle tooth portion 6 is accommodated in the bracket 3. The bucket 1 in the state in which the middle tooth portion 6 is accommodated can be handled in exactly the same way as a normal bucket, and excavation work and leveling work are possible. Next, the cylinder rod 7a of the hydraulic cylinder 7 is extended, the middle tooth portion 6 is rotated, and the opening and middle tooth portion 6 of the bucket main body portion 2 or the tip portion 2a and middle tooth portion 6 of the bucket main body portion 2 Can be gripped. Moreover, the crushing operation | work is also possible by the middle tooth part 6 and the bucket main-body part 2 as needed. Here, the repair work of the asphalt road will be described as an example. First, the asphalt road surface is cut by a dedicated machine. Next, the excavated asphalt is dug up and transferred to a transportation vehicle. Here, a series of operations in which the cut asphalt is dug up by the bucket 1 and then the middle tooth portion 6 is rotated to pulverize the asphalt to an appropriate size and are transferred to a transportation vehicle. It becomes possible. Moreover, depending on the situation, direct excavation work by the bucket 1 is also possible without cutting the asphalt road surface. When the excavation work on the asphalt road surface is completed, the middle tooth portion 6 is housed in the bracket 3 and the leveling work is performed in the same manner as the work with a normal bucket.

  According to the bucket for the power shovel of the present invention having the above-described configuration, a series of operations (excavation, gripping, crushing, etc.) in the construction and civil engineering work, and the waste separation work can be performed with the same bucket. Since it is configured to be housed in the bracket, the bucket can be made compact, and an additional mechanism is not required, which is inexpensive.

  In addition, since the tip of the middle tooth and the tip of the bucket body are aligned and abutted on the same surface, even objects smaller than the width of the bucket body can be securely gripped, and work can be performed safely. I can do it.

  According to the bucket for the excavator according to the present invention, many manual operations such as dismantling of buildings, separation work such as industrial waste processing work, and road restoration and cleaning up of waste materials at the time of disaster recovery work such as storm and flood damage. Can be suitably used as an attachment for a power shovel that requires

It is a perspective view of the bucket for power shovels concerning one example of the present invention. It is a side view of FIG. It is explanatory drawing which shows the operation state of a middle tooth part. It is front explanatory drawing of FIG. It is side surface explanatory drawing which shows the bucket for conventional power shovels.

Explanation of symbols

1 Bucket 2 Bucket Body 2a, 6a Tip 2b, 6b Tip 3 Bracket 4 Arm 5 Bucket Cylinder 6 Middle Tooth 7 Hydraulic Cylinder 7a Cylinder Rod

Claims (3)

  In a power shovel bucket to be mounted on the tip of an arm of a power shovel, a bucket main body portion having an opening, a bracket provided continuously to the bucket main body portion and pivotally attached to the arm, and an inside of the bracket A bucket for a power shovel comprising a middle tooth portion that is housed in the bucket body portion and is rotatable within the bucket body portion, and a hydraulic mechanism that is provided so that the middle tooth portion can be turned.   The front end portion of the middle tooth portion is in contact with the front end portion of the bucket main body portion, and the front end surface of the middle tooth portion and the front end surface of the bucket main body portion are flush with each other. Excavator bucket.   The hydraulic mechanism includes a hydraulic cylinder, and one end of the hydraulic cylinder is rotatably connected to the inside of the front end side of the middle tooth portion, and the other end is rotatably connected to the bracket. The bucket for power shovels according to claim 1 or 2.

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