JPH0343412B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is an excavator used for excavating trenches for constructing retaining walls for retaining earth, trenches for burying cables, piping, etc. underground, and other trenches. In particular, the present invention relates to a claw-shaped bucket bucket with a claw that is installed in the excavator main body constituting the excavator and is capable of forward and reverse rotation.

(Prior art and its problems) Conventionally, there are various types of excavators that excavate and form trenches for constructing retaining walls. The bucket structure used for excavation work was weak in strength, and as a result, excavation efficiency was often poor.

In addition, when it is impossible to excavate from one direction during excavation work, for example when the bucket slips due to biting stones, conventional excavation from one direction can make subsequent work extremely difficult. It is.

In addition, when using a bucket conveyor type excavator to excavate a trench for constructing a retaining wall, generally the H
By driving steel, sheet piles, etc., with a pile driver, for example, the earth retaining work is completed.

Then, after driving the H steel or piles (the H steel etc. have a width of approximately 20 cm to 30 cm), foundation work is carried out at intervals of approximately 50 cm to 70 cm.

Machines that excavate trenches for constructing retaining walls for earth retention are used to dig trenches at intervals of approximately 50cm to 70cm from the boundary.
There is a problem these days when foundation work cannot be done and effective use of land is being called for, and especially the more floors there are, the greater the loss will be.

Furthermore, with conventional bucket conveyor type excavators, smooth excavation and soil removal are not possible, resulting in adverse effects on the adjacent ground or buildings, such as ground subsidence or collapse, building tilting, etc. There are also many troubles caused by intrusion into neighboring land.

(Object of the Invention) The present invention has been devised in view of the above-mentioned conventional problems.

In other words, a trench is excavated along the boundary of the plot,
For example, filling the excavated trench with fresh concrete,
An excavator that can construct a retaining wall for retaining earth here (to the entire boundary, to the entire site, or to the adjacent building) through the insertion of shaped steel, and an excavator with a claw shape that is optimal for this excavator. Be able to equip a bucket. In addition, at this time, we devised a claw-shaped bucket with good excavation efficiency and mechanical strength.

In particular, the present invention provides a reversible claw-shaped bucket cart that can be reversibly excavated and transported in the forward direction or in the reverse direction by reversing the chain or the like; When digging in a straight direction, if a stone is biting and the claw-shaped bucket slips, the stone can be removed by digging from the other direction, and the stone can be excavated as it is, or excavation can be carried out in one direction, depending on the soil type. The structure is such that trenches can be excavated reliably and accurately.

(Means for Achieving the Object) In order to achieve the above object, the present invention provides a chain gear provided at an upper part of an excavator main body, a guide member provided at a lower part of the excavator main body, and a chain gear provided at a lower part of the excavator main body. and a reversible chain suspended between the guide members, and a hook-shaped bucket bucket with claws that is approximately T-shaped when viewed from the side and is reversible and is provided at appropriate intervals on the chain via a bracket. This hook-shaped bucket bag includes a flat mounting part provided with a pair of brackets to be attached to the chain, and an upper and lower part extending in a substantially horizontal direction from a substantially central part of this mounting part. The rake is composed of a claw-shaped pail-shaped bucket main body with a rake surface, and a pair of substantially triangular prism-shaped claws with upper and lower claws attached to the tip of the rake surface of the claw-equipped plow-shaped bucket. The surface and the claw portion are formed in a symmetrical relationship in the vertical direction of the traveling direction of the chain,
This is a plow-shaped bucket with a claw that is installed in the excavator main body and has a gap between the pair of claws and can be rotated forward and backward.

(Function) When excavation work is performed by the excavator of the present invention, the chain rotated in an endless track by a motor or the like is rotated, so that the chains provided at approximately equal intervals are rotated. The main body of the bucket, which has a hook and can be used to directly perform excavation work, is rotated together with the chain to perform the excavation work.

In addition, since the claw-shaped bucket bag body is connected to the rotating chain via a bracket,
As the chain rotates, the claw-shaped pail-shaped baguette main body rotates, and in this process, the claws arranged in parallel at the tip of the claw-shaped poop-shaped bucket main body and the tip of the claw-type poop-shaped bucket main body rotate. As the excavated earth and sand are directly excavated, the excavated earth and sand are scooped up by a nearly horizontal rake face and moved upward.

In this way, each claw-shaped bucket body and the claws repeatedly excavate and transport the excavated soil, and the excavated soil is transported upward, and then
be excluded from the outside.

By repeating such operations, a narrow flat groove for the retaining wall is excavated.

Next, this narrow flat groove (hereinafter simply referred to as a groove) is filled with, for example, ready-mixed concrete and aggregate to construct a one-pitch wall for an earth retaining wall.

Further, since the claws provided in the bucket bucket with claws of the present invention are provided with substantially triangular prism-shaped claws, earth and sand can be caught reliably and excavation work can be carried out efficiently.

Furthermore, since the claw-shaped bucket main body has a symmetrical rake surface, etc., the mechanical structure is strong, and reliable excavation or earth removal work can be performed.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

Figure 1 shows the overall layout of the excavator body, and Figure 2 shows the overall layout of the excavator body.
The figure shows an enlarged plan view of the excavator body. Figure 3 shows a schematic diagram of the main parts inside the excavator body;
6 to 6 are enlarged views of a claw-shaped bucket bucket that constitutes the main part of the excavator main body.

In the figure, 1 in the figure is a crane, and 2 in the figure is a crane.
is the boom of crane 1. 3 in the diagram is boom 2
It is a turret that is installed so that it can rotate 180 degrees.
Further, numeral 4 in the figure is a pulley provided at the upper end of the turret 3. Furthermore, 5 in the figure is a rope 5 that connects the pulley 4 and the pulley fixed to the excavator main body 6.

In the figure, reference numeral 6 denotes the excavator main body, which is guided by the turret 3 and is arranged in a hanging manner so that it can be pulled down or pulled up in the vertical direction by a rope 5, and is suspended almost parallel to the turret 3 by the rope 5. It is suspended. That is, the sliding member 7 of the excavator main body 6 is fitted to the side surface of the tower 3 which is erected in the figure so as to be slidable in the vertical direction.

This sliding member 7 is connected to a frame 8 fixed to the excavator main body 6. A pulley 9 is pivotally attached to the upper end of the frame 8, and the rope 5 is wound around the pulley 9.

Therefore, the pulley 9 is moved in the vertical direction by the rope 5, and in this case, the sliding member 7 is slid in the vertical direction along the turret 3.

Next, the configuration of the excavator main body 6 will be explained based on FIG. 3. Reference numeral 10 denotes a side plate that constitutes the excavator main body 6, and this side plate is composed of two side plates 10a and 10b arranged in a substantially parallel manner. The frame 8 is fixed to the inner side plate 10a. These side plates 10a, 10b are formed in an oblong front shape, and the side plates 10a, 10b are
A large number of bucket buckets A with claws shown in FIGS. 4 to 6 are attached between the holes B.

The excavator main body 6 has a drive chain gear 13 in the upper part, and a semi-circular guide member or chain gear ( In the present invention, a chain 14 is suspended between the chain gear 13 and the guide member in the form of an endless track.

The upper chain gear 13 is rotated by a motor 11 provided at a lower portion of the frame 8 and on the side plate 10a side.

Therefore, when the chain gear 13 is rotated by the motor 11, the chain 14 can be rotated clockwise or counterclockwise.

In the figure, reference numeral 15 denotes peg-shaped bucket main bodies with claws disposed on the chain 14 at approximately equal intervals. This claw-shaped bucket main body 15 is moved in the vertical direction as the chain 14 rotates, and its detailed structure will be described later with reference to FIGS. 4 to 6.

Reference numeral 16 in the figure indicates a waterwheel-shaped kneading wheel, and a plurality of kneading wheels are pivotally supported between the chain gear 13 and the guide member at approximately equal intervals in the vertical direction. It is also provided as necessary.

A plurality of kneading wheels 16 provided coaxially with the chain gear 13 have a blade rod 17 at each tip of the blade portion, and the tip of each blade rod 17 is connected to the chain 14.
is engaged with.

Therefore, as the chain 14 rotates, the blade rod 17 engaged with the chain 14 moves, and the movement of the blade rod 17 causes the kneading wheel 16 to rotate. When the excavator main body 6 excavates earth and sand, the kneading wheel 16 functions to mix the excavated earth and sand and facilitate discharge of the earth and sand.

Next, the details of the hook-shaped bucket A that can directly excavate and transport earth and sand are shown in Figures 4 to 4.
This will be explained based on FIG.

As you can see in Figure 2, the claw-shaped bucket bag A is
A spatula-shaped bucket main body 15 with claws having a structure in which the claws (described later) and the tip of the rake face 23 protrude from the width direction of the side plates 10a and 10b (which is the pitch direction of the excavation groove); Broom-shaped bucket body 15
The mounting portion 15a is provided at the rear portion (the side to be attached to the chain 14) of the rake face 23 (the side to be attached to the chain 14) and substantially perpendicular to the rake face 23 (corrected text will be provided later).

Therefore, this claw-shaped bucket bag A has brackets 18, 18 (hereinafter simply referred to as 18) arranged in parallel to each other so as to be able to sandwich the chain 14, at the rear of the mounting portion 15a. do.)
are attached to the chain 14 at appropriate intervals.

Two through holes 19 are vertically bored in each of the brackets 18, and a pin 2 provided on the chain 14 is inserted into the through holes 19.
0 is inserted.

Specifically, between the through holes 19 of the bracket 18,
By inserting the pin 20, the bracket 18
are integrally connected to the chain 14, and ultimately the chain 14 is fitted with claw-shaped buckets A at appropriate intervals.

Further, a V-shaped notch 22, for example, is formed at the tip of the hook-shaped bucket main body 15, the effect of which will be described later.

In addition, the rake surfaces 23 provided on the upper and lower sides (in FIG. 5, upper and lower sides in the left-right direction when facing the drawing) of the claw-shaped bucket main body 15 are symmetrical, and when viewed from the side, it is approximately It has a T-shape, and this approximately T-shape is similar to the hook-shaped bucket A.

Several through holes 24 are bored in the rake face 23 for the purpose of facilitating the removal of the excavated soil scooped by the rake face 23.

Furthermore, a structure that is thinner than the claw-shaped bucket main body 15 and extends from the claw-shaped bucket main body 15 in the width direction is formed on the entire tip or both ends of the claw-shaped bucket main body 15. And, what's more, the tip is a peg-shaped bucket body 15 with a claw.
The claw attachment part 21a has a tenon structure that is shorter than the tip of the
A claw 25 is removably fixed to each.

The claw portion 26 of the claw 25 has a substantially triangular prism shape.
is configured to protrude from the rake surface 23 of the claw-shaped bucket main body 15.

Further, the pair of claw portions 26 of the claw 25 are formed in a symmetrical relationship in the vertical direction of the claw-shaped bag bag main body 15.

Furthermore, a gap B is provided between the claws 25 in order to avoid a load on the entire hook-shaped bucket bag A.

Claw-shaped bucket A configured as above
is moved upward or downward as the chain 14 rotates, the hook-shaped bucket A is
Since it is firmly connected to the chain 14 via the rear rising mounting portion 15a, which constitutes a part of the claw-shaped bucket bag body 15, and the bracket 18, the tip of the claw-shaped bucket bag main body 15, and The claws 25 are used to excavate the earth and sand, and the claws 26 mainly in the driving direction (forward direction) are used to securely capture and powerfully excavate the earth and sand.

The earth and sand excavated in this way is scooped up onto the scooping surface 23 of the claw-shaped bucket main body 15, and most of it is transported upward as the claw-shaped bucket main body 15 moves. ,
A part of it spills downward from the through hole 24 of the rake face 23 (for example, depending on the soil quality or the degree of dryness of the soil).

However, as mentioned above, most of it is carried upward as the claw-shaped bucket main body 15 moves and is removed to the outside of the groove or other places.
There is no problem.

The other purpose of the through holes 24 is to improve the removal of the excavated earth and sand placed on the rake face 23.

Further, the shape of the claw portion 26 and the shape of the hook-shaped bucket main body 15 are not particularly limited to those of this example.

Furthermore, the scooping surface 23 may be provided with a curved surface to enable smooth removal of the earth and sand placed there.

(Effects of the Invention) As described in detail above, the present invention provides a hook-shaped bucket bucket that is fixed to a chain via a pair of brackets, and a hook-shaped bucket bucket main body that has a symmetrical rake surface. , and a claw having a symmetrical claw part attached to the tip of the bucket main body.

Therefore, when driving an excavator while standing vertically on the ground or underground, the above or below, so-called normal rotation of the chain (clockwise rotation) , earth and sand can be excavated through the upper claw part which is in a symmetrical relationship with the claws;
Moreover, this excavated earth and sand can be conveyed to the ground via the symmetrical upper rake face. Conversely, for reverse rotation of the chain (rotation in the counterclockwise direction),
It is possible to excavate earth and sand, and this excavated earth and sand can be conveyed to the ground via the symmetrical lower rake face.

In this way, this claw-shaped bucket tote has the effect of performing the same movement (action) and action (work) when the chain is in the forward or reverse direction.

Further, the claw-shaped bucket bag of the present invention is configured to perform the same movement and action in the forward and reverse directions as described above.

Therefore, when dealing with various types of soil such as soil or gravel layers, or hard obstacles such as stones and rubble mixed in the soil, the direction of movement can be changed to the forward or reverse direction at will to perform earth and sand excavation work. and excavated earth and sand removal work can be performed reliably and quickly.

Further, in the present invention, a gap is provided between the claws provided on the hook-shaped bucket bag main body.

Therefore, the earth pressure load applied to the claw-shaped bucket can be reduced, and the claw part of the claw-shaped bucket can be reduced.
It can contribute to reducing wear or breakage.

Furthermore, the claw-shaped bucket cart of the present invention is provided on a chain at appropriate intervals via brackets.

This has the effect of ensuring some degree of freedom of movement in the direction of movement of the chain on the tip side of the hook-shaped bucket bucket.

Moreover, due to this effect, even if there is a hard obstacle such as a stone or rubble in the ground, it can escape upward or downward, and the damage caused by it can be suppressed to a very small extent.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, Fig. 1 is an overall layout diagram showing the operating status of the excavator, Fig. 2 is an enlarged plan view of the excavator main body, and Fig. 3 is a schematic view of the inside of the excavator main body. Fig. 4 is an enlarged plan view of the hook-shaped bucket bag, Fig. 5 is a side view of Fig. 4, and Fig. 6 is a slightly enlarged perspective view of Fig. 4. be. 1: Crane, 3: Yagura, 6: Excavator body, 1
3: Chain gear, 14: Chain, 15: Claw-shaped bucket body, 18: Bracket, 22: Notch, 2
3: Rake face, 24: Through hole, 25: Claw, 26: Claw portion, A: Plough shaped bucket with claw, B: Gap.

Claims (1)

[Claims] 1. A chain gear on which a reversible chain is suspended;
and a hook-shaped bucket bucket with a hook, which is approximately T-shaped when viewed from the side, and is installed at appropriate intervals through a pair of brackets on the chain of the excavator main body, which has guide members provided at the upper and lower parts thereof, and is reversible in the forward and reverse directions. This hook-shaped bucket bag includes a flat mounting part provided with the pair of brackets attached to the chain, and a substantially central part of the mounting part.
A hook-shaped pail-shaped bucket body with upper and lower rake surfaces extending in a substantially horizontal direction, and a pair of upper and lower claw parts attached to the tip of the rake surface of the claw-shaped pail-shaped bucket main body. and a triangular prism-shaped pawl, the rake face and the pawl portion being formed in a symmetrical relationship in the vertical direction of the traveling direction of the chain,
A plow-shaped bucket with a claw that can be rotated in forward and reverse directions, which is installed on an excavator body and has a gap between the pair of claws. 2. A claw-shaped bucket bucket with a claw that can be rotated in forward and reverse directions, which is installed in an excavator main body according to claim 1, wherein the claw is removably provided at the tip of the claw-shaped bucket bucket main body.