JPH072734Y2 - Detachable bucket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a bucket of an excavator used for excavating a retaining wall for earth retaining, a groove for underground burying of a cable, and the like.

[Prior Art] Conventionally, a bucket conveyor used in an excavator rotates a chain in an endless track, excavates earth and sand with a bucket attached to the chain, and carries the excavated earth and sand out of the excavation site. It is a thing. However, the strength of the conventional bucket structure is weak, and the excavation efficiency is often poor. In particular, when excavation from one direction is not possible during excavation work, for example, when the bucket is bitten and the bucket slips, it is difficult to excavate from one direction.

Therefore, as shown in Japanese Patent Application No. 60-297287, in order to allow the bucket to rotate in the forward and reverse directions, there is a bucket having a line-symmetric structure, and an excavating claw and a rake face are provided on both sides of the center line of symmetry. .

[Problems to be Solved by the Invention] However, in the above conventional bucket conveyor, since the excavating claws are attached to and detached from the bucket body in the bucket, it becomes difficult to firmly hold the excavating claws. . Further, since the bucket body is fixed to the chain by inserting the pin provided on the chain into the bracket, it is not easy to repair or replace the bucket. Further, since the central notch of the excavating claw is V-shaped, a V-shaped protruding portion is formed on the object to be excavated during excavation, so that there is a problem that the excavation surface has insufficient holding force.

Therefore, the present invention has been made in order to solve the drawbacks of the above-mentioned conventional techniques, and provides a bucket conveyor that can firmly hold the excavating claws in the bucket and can easily attach and detach the bucket to and from the chain. That is the purpose.

[Means for Solving Problems] A bucket conveyor according to the present invention is, firstly, a bucket conveyor having an endless track chain and a bucket provided with an excavating claw on the chain. The chain has a pair of outer chain pieces and a pair of inner chain pieces, and at least one of the outer chain piece and the inner chain piece has a substantially L-shaped cross section, and Having a bending piece portion having a side-facing surface, the bucket has a bottom portion in contact with the bending piece portion, and the entire bucket is integrally formed, and the bucket has the bottom portion of the bucket in the bending piece portion. It is characterized in that it is attached to the chain by being fixed.

Secondly, in the first configuration, an arcuate notch is provided substantially at the center of the excavating claw of the bucket.

Furthermore, thirdly, in the first or second configuration,
It is characterized in that the bucket has a Y-shaped tip portion and excavation claws are formed at two tips of the Y-shaped tip portion.

[Operation] In the bucket conveyor of the first configuration, since the bucket is attached to the chain, the chain is rotated to excavate the earth and sand with the excavation claws provided on the bucket. Here, the chain has an outer chain piece and an inner chain piece, and at least one of the outer chain piece and the inner chain piece has a substantially L-shaped cross section and faces the excavating claw side. Since the bucket has the bent piece portion having the surface and the bucket is attached to the chain through the bent piece portion, the bucket and the chain can be attached and detached very easily, and the bucket can be easily repaired and replaced. Moreover, since the entire bucket is integrally formed, the durability of the bucket can be maintained.

Further, in the bucket conveyor of the second configuration, since the arc-shaped notch is provided in the approximate center of the excavating claw of the bucket,
When excavating newly or excavating existing concrete during excavation, it is possible to form arcuate protrusions in plan view in the excavated part, so it is possible to improve the holding power of the excavated surface, stop water, and clods on the concrete surface The soil pressure strength of can be increased.

Further, in the bucket conveyor of the third configuration, since the bucket has a Y-shaped tip and the excavating claws are formed at the two tips of the Y-shaped tip, the bucket can be rotated in either forward or reverse directions. It can be used and has sufficient strength.

[Embodiment] An embodiment will be described below with reference to the drawings in order to further clarify the gist of the removable bucket of the present invention.

As shown in FIGS. 1 and 2, a bucket 5 is detachably attached to a chain 4. The chain 4 has an endless orbital shape and can rotate forward and backward as described later. The bucket 5 can be moved by the rotation of the chain 4 to excavate a groove or the like. As will be described later, the bucket conveyor 3 has a chain 4 and a bucket 5, is provided inside the excavator main body 2, and the excavator main body 2 is operated by the crane vehicle 1.

Next, the chain 4 includes the chain pieces 41, 42, 43 and the connecting portions 44, 4
It has 5 and can be freely bent at the connecting portions 44 and 45. The bucket 5 has a tip portion 52,52 suspended from a bottom portion 51,51.
Has a scooping surface 53a, 53b formed on both sides of the bottom portion 51, and the bottom portion 51 is attached to the bending piece portion 42a of the chain piece 42 by the bolt 61 and the nut 6.
It is detachably attached at 2. Here, the chain piece portion 42 has a chain piece body 42b in a position parallel to the chain piece 41 and the bent portion 42a inside the chain piece 41, and the bent piece portion 42a extends from the chain piece body 42b. Has been done. The bent piece portion 42a has a surface facing the excavating claw 52a, and the chain piece portion 42 has a substantially L-shaped cross section as a whole. The tip portion 52 has a Y-shape, two tips of which are formed on the excavating claws 52a and 52b, and an arcuate notch 54 is formed at the center thereof. The claw 52a and the scooping surface 53a
Since the claws 52b and the scooping surface 53b are formed in opposite directions, excavation can be performed in both forward and reverse rotations of the chain 4. The chain guide 33 is fixed to the side plate 32.

Next, referring to FIG. 3, the bucket conveyor 3 has a gear 31,
Side plate 32, chain guide 33, chain 4 and bucket 5
have. The shaft 31a of the gear 31 is rotatably supported by the side plate 32, and the gear 31 is driven by a power source (not shown) (for example, the engine of the motor-crane vehicle 1). The chain 4 is driven in the forward and reverse directions by the gear 31, and the bucket 5 is moved by the rotation of the chain 4.

Further, in FIG. 4, the mobile crane 1 can be moved by a caterpillar 11, and a turret attached to the mobile crane 1 can be used.
12 is supported by boom 13. Then, the excavator body 2 can be moved up and down by a rope 15 that is passed through a pulley 14 attached to the upper end of the turret 12, and the sliding portion 21 of the excavator body 2 moves vertically along the turret 12. Slide on. In addition, 7 is a ground surface.

The operation will be described with the above configuration.

First, the crane vehicle 1 is moved so that the excavator main body 2 stands upright at the excavation site on the ground surface 7. Next, the gear 31 of the bucket conveyor 3 provided in the excavator body 2 is driven by the power source (not shown) to rotate the chain 4. At this time, the bucket 5 moves due to the rotation of the chain 4,
The claw 52a or 52b excavates the earth and sand, and the scooping surface 53a or 53b stores the earth and sand and discards it to the outside, and at the same time the pulley 14
While excavating with the rope 15 and excavating sites are moved downward one after another, it is possible to excavate a groove having a predetermined depth on the ground surface 7.

In addition, the caterpillar 11 moves the mobile crane 1,
It is possible to dig one large groove by moving excavation sites, digging trenches one after another, and connecting the trenches.

In the bucket conveyor of the above embodiment, the bucket 5
However, since the bottom 51 of the bucket 5 is attached to the bent piece 42a of the chain piece 42 of the chain 4 by fixing it with bolts and nuts, the bucket can be repaired and replaced very easily. In particular, since the bucket is a portion that is in direct contact with the ground and is easily damaged, it is convenient that the bucket can be easily attached and detached. Also, in the bucket 5, the bottom
Since the 51 and the tip portion 52 are integrally formed as a whole, the strength of the bucket can be increased.

Further, since the tip end portion 52 of the bucket 5 is formed in a substantially Y shape, it is possible to rotate in the forward and reverse directions and to increase the strength. In addition, the excavation claw 52 of the bucket 5
Since the arcuate notch 54 is provided in the center part of a, when excavating newly or excavating existing concrete, it is possible to form an arcuate protrusion in plan view in the excavated part, so that the excavation surface It is possible to improve the holding power of water, and to increase the waterproofness and the earth pressure strength of the soil on the concrete surface.

In addition, the length of the bottom 51 of the bucket is
Since it is longer than the interval of 4, 45, the amount of earth and sand that can be stored in the scooping surfaces 53a, 53b can be increased.

Incidentally, the present invention is not particularly limited to the above-mentioned embodiment, and may be arbitrarily determined within a range in which the object, operation and effects of the invention described below are achieved.
It goes without saying that any of these changes does not change the gist of the present invention.

[Advantage of the Invention] In the bucket conveyor of the present invention, since the bending piece is provided and the bucket is attached to the chain through the bending piece, the bucket and the chain can be attached and detached very easily, and the bucket can be repaired. , Can be easily replaced. Moreover, since the entire bucket is integrally formed, the durability of the bucket can be maintained.

In addition, since an arcuate notch is provided in the approximate center of the excavating claw of the bucket, an arcuate projecting portion can be formed in the excavated portion, so that the excavation surface holding power can be improved, and water blocking and concrete surface clod The soil pressure strength of can be increased.

Further, since the bucket has a Y-shaped tip portion and excavation claws are formed at the two tips of the Y-shaped tip portion, the bucket can be used for both forward and reverse rotation and has sufficient strength. Can be

[Brief description of drawings]

The drawings show an embodiment of a removable bucket according to the present invention. FIG. 1 is a front view showing essential parts of a bucket and a chain, FIG. 2 is a right side view of the same, and FIG. 3 includes them. FIG. 4 is a front view of the bucket conveyor, and FIG. 4 is a layout view of an excavator main body having the bucket conveyor. 3 …… Bucket conveyor 4 …… Chain 44,45 …… Coupling 5 …… Bucket 51 …… Bottom 52 …… Tip 52a, 52b …… Claw 53a, 53b …… Scooping surface 54 …… Notch.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 999999999 Noboru Sugano 117 Yayogaoka, Tenpaku-ku, Nagoya, Aichi (72) Inventor, Kazuto Isaji 2-16-18, Mei Station, Nishi-ku, Nagoya, Aichi (72) Inventor Akira Shimizu 28, 745, Komakihara-shinden, Komaki-shi, Aichi (72) Inventor, Akira Sawaki 230, Ogomachi-machigoe, Iwakura-shi, Aichi (72) Toru Kajikawa 4-chome, Takakura-cho, Kariya-shi, Aichi 2 (72) Osamu Takagi 5-37 Shinogi-cho, Kasugai-shi, Aichi (72) Inventor Noboru Sugano 117 Yayoi-oka, Tenpaku-ku, Nagoya, Aichi (56) Reference: JP-A-62-160330 (JP, 160-330) A)

Claims (3)

[Scope of utility model registration request] 1. A chain having an endless track, and a bucket provided on the chain and having a claw for excavation,
And a chain having a pair of outer chain pieces and a pair of inner chain pieces, wherein at least one of the outer chain piece and the inner chain piece has a substantially L-shaped cross section, The bucket has a bending piece portion having a surface facing the side of the excavating claw, the bucket has a bottom portion in contact with the bending piece portion, and the entire bucket is integrally formed. A bucket conveyor characterized by being attached to a chain by being fixed to a bending piece. 2. The bucket conveyor according to claim 1, wherein an arcuate notch is provided substantially in the center of the excavating claw of the bucket. 3. The bucket conveyor according to claim 1, wherein the bucket has a Y-shaped tip portion, and excavation claws are formed at two tips of the Y-shaped tip portion.