JPH0615960Y2 - Dredge bucket - Google Patents

Description

TECHNICAL FIELD The present invention relates to a dredging bucket, and in particular, by arranging the shell opening / closing rope and the entire suspension support rope on the same line on the upper surface of the upper frame, the rope tension is increased. The difference is eliminated, the durability is improved, and a larger capacity dredging function can be maintained.

2. Description of the Related Art A conventional dredging bucket will be described with reference to FIGS. 4 to 6. A pair of shell parts 1 and 1 having a bilaterally symmetrical structure are rotatably attached to a lower frame 2 via shafts 3 and 3. The upper frame 5 is pivotally supported and also via the left and right connecting frames 4 and 4.
It is rotatably supported by. A predetermined number of sheaves 6 and 7 are rotatably supported on the upper frame 5 and the lower frame 2, respectively, and two open / close lobes 8 and 8 are symmetrically provided between the sheaves 6 and 7. Then, the shell parts 1 and 1 are opened and closed. The open / close ropes 8, 8 extend upward through guide rollers 9, 9 arranged on the upper surface of the upper frame 2, and are suspended and supported by a crane (not shown) such as a dredging boat. On the other hand, on the upper surface of the upper frame 5, there is provided 2 for suspending and suspending the entire dredging bucket from the crane.
Book suspension ropes 10 and 10 are connected via a suspension ring 11. As shown in FIG. 6, the suspension ring 11 was arranged substantially in the center of the upper surface of the upper frame 5, and the guide rollers 9, 9 were arranged at the diagonal portions of the upper frame 5, respectively.

However, according to the conventional dredging bucket, since the opening and closing ropes 8 and 8 and the suspension support ropes 10 and 10 are located on a substantially diagonal line of the upper frame 2, the entire bucket is front, rear, left and right. When swinging, the ropes tend to have different tensions, which damages the ropes and necessitates replacement.
Therefore, it was not possible to suspend and operate a large capacity bucket.

By the way, recently, there is much demand for larger capacity buckets,
The wire rope to be used is also required to have strength and durability commensurate with it. However, if a wire rope with a large diameter is used to achieve strength and durability of the wire rope or if the wire rope has a special structure, the weight of the wire rope increases, and the capacity of the bucket must be reduced. It will also cause contradiction.

Therefore, in view of the above-mentioned circumstances, the present invention connects the upper frame with the suspension rope in order to prevent the tension difference between the suspension rope and the opening / closing rope of the dredging bucket. In the dredging bucket in which the open / close rope is hung around the sheave rotatably supported on the upper frame and the lower frame to open and close the shell part, the open / close rope is two in the center of the upper frame, near the left and right sides. 1 for each
Along with arranging the books, one suspension rope is provided between the central portion of the upper frame and the left and right sides, and one at the outermost sides of the left and right sides, and the opening and closing of the shell portion on the upper surface of the upper frame is performed. It is arranged along a substantially center line in a direction orthogonal to the direction.

Effect According to the present invention having the above-described configuration, since the suspension rope and the opening / closing rope are arranged on the same line on the upper surface of the upper frame, there is no difference in tension even if the load of the dredging bucket is biased. Load evenly and do not overload the wire rope.

Embodiment Hereinafter, the present invention will be described based on an illustrated embodiment.

FIG. 1 is a front view showing an embodiment of the dredging bucket according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a plan view of an essential part thereof. The same reference numerals indicate the same or corresponding parts.

As is clear from comparison with the above-mentioned conventional example, the upper frame 5, the lower frame 2, and the left and right connecting frames 4, 4 are both upsized, and the shell parts 1, 1 are also upsized. The total number of suspension ropes 10 connected to the upper frame 5 is four, and they are fixed to the brackets 13 fixed to the upper frame 5 via the wire sockets 12, respectively. Further, the open / close rope 8 is sandwiched between the suspension ropes 10, and a total of four ropes pass through the guide rollers 9 and are wound around the sheave 7 rotatably supported by the lower frame 2, and then the upper frame 5 It goes up inside and is wound around a sheave 6 which is rotatably supported in the upper frame 5. After that, the sheave 7 and the sheave 6 are sequentially wound in this manner and connected to the shell parts 1 and 1. There is. Therefore, the shell portions 1 and 1 are rotatable about the shafts 3 and 3, respectively, and can be opened and closed by operating the opening / closing rope 8.

On the other hand, as shown in FIG. 3, the suspension rope 10 and the opening / closing rope 8 are arranged on the same line on the upper surface of the upper frame 5. That is, two opening / closing ropes 8 supported by the guide rollers 9 are provided in the central portion of the upper frame 5 along the substantially center line in the direction orthogonal to the opening / closing direction of the shell portions 1, 1 on the upper surface of the upper frame 5. Place one on each of the left and right sides and attach the bracket 1
One suspension rope 10 connected to 3 is arranged between the central portion of the upper frame 5 and the left and right sides, and one rope is disposed on the outermost side of the left and right sides. The guide rollers 9 are a pair of guide roller frames 1 fixed to the upper surface of the upper frame 5.
A pair of guide rollers 9 is fixed between the upper and lower frames 5 and 15 between the upper and lower frames 4 and 14 so that a pair of guide rollers 9 are provided on the upper side and are orthogonal to the guide rollers 9 on the lower side.
Consists of.

Thus, since the suspension rope 10 and the opening / closing rope 8 are arranged on the same line, even if the dredging bucket swings, the load applied to each rope is uniformized and not biased, and the suspension rope 10 and Since each of the opening and closing ropes 8 is supported by a total of 8 wire ropes, a large capacity bucket can be suspended and opened and closed.

Effect of the Invention According to the present invention described above, the suspension support rope and the opening / closing rope are collinear on the upper surface of the upper frame, that is, on the upper surface of the upper frame along a substantially central line in a direction orthogonal to the shell opening / closing direction. Since they are arranged, even if the dredging bucket as a whole swings back and forth and to the left and right, there is no great difference in the tension of each rope, and therefore the rope is less damaged and the durability is improved. In addition, since the number of suspension ropes and open / close ropes can be increased and at least eight wire ropes can support and open / close the dredging bucket, the bucket capacity can be increased without increasing the diameter or specializing the wire rope itself. Can be planned.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a dredging bucket according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view of relevant parts, and FIG. 4 is a cross section showing a conventional dredging bucket. Figure, fifth
The drawing is a side view thereof, and FIG. 6 is a partial plan view thereof. 1 ... Shell part, 2 ... Lower frame 4 ... Connection frame, 5 ... Upper frame 6, 7 ... Sheave, 8 ... Open / close rope 9 ... Guide roller, 10 ... Suspension rope 12 ... Socket , 13 …… Bracket

Claims (1)

[Scope of utility model registration request] 1. A dredging bucket in which an upper frame is connected by a suspension rope, and an opening / closing rope is hung around a sheave rotatably supported on an upper frame and a lower frame to open and close a shell portion. Two ropes are arranged in the center of the upper frame, and one rope is arranged near each of the left and right sides, and one suspension rope is provided between the center of the upper frame and each of the left and right sides, and at the outermost sides of the left and right sides. A dredging bucket, characterized in that one of each is arranged, and each is arranged along a substantially center line in a direction orthogonal to the opening / closing direction of the shell portion on the upper surface of the upper frame.