JPS5841242Y2 - Ditch digging bucket - Google Patents

Description

[Detailed description of the invention] This invention is mainly suitable for excavating and forming trenches for plumbing work, such as trenches for underground construction of water pipes, gas pipes, cables, etc., and trenches for underground drainage construction. It concerns packets with a completely new structure.

Until now, trenching work has been carried out by attaching a hydraulic backhoe or shovel to a tractor, or by using a dedicated trencher, such as a datesha or trencher.

However, in the case of dedicated trenchers such as deitschers and trenchers, although they can certainly perform efficient trenching work, they tend to be extremely expensive and lack versatility, so It was rarely used for civil engineering work, and its main use was for agricultural work.On the other hand, when it was used as a tractor attachment for backhoes or shovels, it was difficult to use due to the operating mechanism of the packet itself. Therefore, it is unavoidable to excavate a considerably larger trench due to the necessary trench width, which is not only uneconomical in itself, but also in the backfilling work for self-recovery. It is not suitable for excavating areas with sticky soil such as (the excavated soil adheres to the inside of the packet and is difficult to remove), so it is not suitable for excavating areas with sticky soil such as soil.
It was unsuitable for trench digging over a wide area.

Therefore, this invention was achieved as a result of continued intensive development and research in order to deal with these existing conditions, and the details of its configuration are as detailed below.

The overall perspective view shown in FIG. 1 and the same side view shown in FIG. 2,
As can be understood from the front view of FIG. 3, the groove-digging packet of this invention basically has a hook-shaped packet body body 1 in the side shape, and a hook-shaped packet body body 1. It is constituted by a pair of swingable pieces 2, which also serve as side cutters, and which are combined near the upper side of the concave side cavity.

The packet body trunk 1 has at least a cutting edge 11 formed at its lower end, and its both sides are formed into upright edges 12 and 12 as required, forming a U-shaped cutting edge with the cutting edge 11 at the front. It is also possible to configure .

The hook-shaped curved portion 13 extending from the cutting edge 11 at the lower end to the upper end is formed relatively thick, and has a pentagonal horizontal cross section (A-A cross section in FIG. 2) at the center as shown in FIG. Both corner parts 15.15 that sandwich the ridge line 14 are processed into cutting blades, and like the rising blades 12.12 provided as necessary on both sides of the cutting edge 11, they cut the sides of the cross section of the groove to be excavated. They will share the functions needed to do so.

At the upper end of the packet main body trunk 1, there is a joint part 1 to the tip operating part of a lift arm A of a tractor or other work vehicle.
6 is formed, and this joint I/portion 16 has a flange piece with a joint pin insertion hole formed therein as in a normal packet. Placement (center angle: 15°)
It would be convenient if it was formed so that the bolt insertion hole a' is formed.

A circular joint plate 16 having a'... and a guide pole) b at the center, and the circular joint plate 16
A separate bracket 17 paired with the circular joint plate 16 is provided with bolt insertion holes a'', a'', . The bracket 17 is formed to have an insertion hole C for inserting the guide bolt b, and after the bracket 17 is attached to the tip operating part of the lift arm A of the work vehicle body, each of the bracket 17 and the circular joint plate 16 is Bolt insertion hole a″.

Attach a''... and a'a'-... and bolt insertion hole C and guide pole) b in correspondence with each other,
It may be tightened with bolts or nuts.

The curved concave side cavity of the hook-shaped packet main body body 1 formed in this way is the excavated soil holding portion 18 during trench digging.
becomes.

Swingable pieces 2, 2 are arranged on both sides of the empty space of this excavated soil holding part 18 so as to sandwich the empty space from both sides. It is pivoted.

(In the figure, 24 is a pivot bolt or pin) This pair of swingable pieces 2, 2 have the following shapes:
The shape is such that the center of gravity can be located as far away from the pivot axis as possible, and even when the packet main body trunk 1 is changed in its posture by the lift arm A, it can be extremely stably returned to its original position, i.e. It is formed so that it returns to a position facing directly below.

The size can be appropriately selected depending on the size of the excavated soil holding part 18 of the packet main body body 1, and one criterion for the selection is that the area to be excavated is Depending on the soil type, for example, when using a clay soil with strong adhesiveness, use a slightly smaller size, and when using a sandy soil, use a slightly larger size. If the blades 12, 12 are not provided and the swingable pieces 2, 2 are used selectively, such as by making them large enough to reach the same location, trench digging work can be done extremely efficiently. becomes.

Furthermore, the outer side of the swingable pieces 2, 2, that is, the side 21 of the portion of the packet main body body 1 that does not face the excavated soil holding part 18, is formed into a substantially straight line, and The outer side is formed into a cutting edge and also functions as a side cutter, and the rising blades 12° 12 are formed as necessary on both sides of the cutting edge 11 of the packet body body 1, and Together with the concave side corners 15° 15, they share the power of cutting the sides of the trench to be excavated.

On the other hand, as can be understood from the side view of each process for explaining the usage condition shown in FIG. 5, the swing range of the swingable pieces 2, 2 is as shown in FIG. , Tonosho rotates the swingable piece 2 from the direction opposite to the direction of rotation of the packet body.
2, the inside of the swingable pieces 2, 2 near the pivot point is supported in contact with a predetermined location above the packet main body body 1, during this excavation work. The bucket is always held at a predetermined angle so that the function of the side cutter in the bucket L- is fully performed, and as the excavation progresses, the excavated soil is fully held in the excavated soil holding part 18. (Refer to Figure 5) When it is about to move to the soil removal process, the swingable pieces 2, 2 maintain their original posture, regardless of the rotational movement of the packet main body body 1 for soil removal. In other words, it does not try to stay in the position facing straight down, and from the viewpoint of the packet body, this state means that the swingable pieces 2, 2 are free to swing to any angle as shown by the dotted line in Fig. 5C. However, if the degree of freedom is too large, there is a risk that it will rotate to the upper end joint part 16 side of the packet body body 1 and reach a position where it cannot be restored to its original position. A stopper piece 23°23...
Make sure to place an appropriate number of...

In addition, in the embodiment, the pair of swingable pieces 2, 2 are connected to the sheath pipe 22.
In this example, they are connected together, but of course they can be formed independently, and in that case, the stopper piece 23 would be formed directly on the upper surface of the swingable piece 2 at an appropriate position.

As mentioned above, in the groove digging packet of this invention, the part corresponding to the side cutter is also formed as a swingable piece, so the excavated soil E excavated at the groove digging location is reliably attached to the packet body during excavation. However, at the time of discharge, regardless of the soil quality, the swingable piece 2 forcibly pulls out the excavated soil E by natural rotation due to its own weight (
(see FIG. 5C), the series of trench excavation operations can be carried out extremely smoothly and reliably.

This effect is particularly noticeable when the trench width is small, and therefore it can be made optimal for piping work and culvert work.

Moreover, the structure of the excavated soil discharge section does not employ any complicated mechanisms such as hydraulics or electric power, and simply utilizes the natural gravitational force of its own weight, so the overall structure is simple. Therefore, it is easy to manufacture, and therefore has an excellent effect that it can be provided at low cost with fewer failures.

[Brief explanation of the drawing]

The drawings are based on a typical embodiment of the invention; FIG. 1 is an overall perspective view, FIG. 2 is a side view of the same,
FIG. 3 is a front view of the same, FIG. 4 is a sectional view taken along the cross section A to A of FIG. 2, and FIG. 1: Packet body trunk, 2: Swingable piece, A: Lift arm of work vehicle body, E: Earth excavation, G: Ground.

Claims (1)

[Scope of utility model registration request] A hollow space on the hook-shaped concave side of the hook-shaped packet main body body with a lower end formed at least at a cutting edge and an upper end formed at a joint part to a lift arm tip operating part of a working vehicle body such as a tractor. is used as an excavated soil holding part, and a pair of swingable pieces that also serve as side cutters are attached to the upper end of the body of the packet near the excavated soil holding part. A trench digging packet that pivots in place.