EP1174546A1

EP1174546A1 - Excavating ripper (tooth)

Info

Publication number: EP1174546A1
Application number: EP00964550A
Authority: EP
Inventors: Kazutoshi Ishizuka; Shingi Yanai
Original assignee: Mitsuhashi Takashi; Shimura Kiyomitsu
Current assignee: Mitsuhashi Takashi; Shimura Kiyomitsu
Priority date: 1999-10-07
Filing date: 2000-06-29
Publication date: 2002-01-23
Also published as: EP1174546A4; WO2001029331A1; JP2006207113A; AU7547200A

Abstract

An excavating ripper is provided which is so constituted as to do excavating by being attached to the arc-drawing front tip end of an excavating machine bucket body rotatably pinned to a specified arm of a construction excavating machine such as a power shovel and drawing an arc around the pin when an arm rod is extending or contracted. The ripper includes a hollow base provided with a hollow recess to receive an adapter serving as a joining member for joining the bucket body with the ripper, and a thick-walled, tapering solid tip end, an inner surface facing the rotation center of the arc and an outer surface opposite to the rotation center being worked so as to be curved / warped toward a direction the rotation center along its base portion to the tip end portion, thereby improving its excavating power and durability.

Description

TECHNICAL FIELD

The present invention relates to an excavating ripper (tooth) and more particularly to the excavating ripper being attached to a tip of an excavating machine bucket to do excavating.

BACKGROUND ART

When excavating is done by operating an excavating bucket attached to a tip of an excavating machine such as a power shovel or a like, a road surface is excavated by using a plurality of wedge-type excavating rippers being extruded from a tip of the bucket body and excavated matters such as an earth and sand is removed or gathered by being housed in the bucket body. At this point, as shown in Fig. 61, the bucket body 3, by expansion and contraction of an arm rod 6, is caused to draw an arc around a pin 7 placed at a tip of an arm 4, thus enabling the excavating ripple 2 to intrude into objects to be excavated such as the earth and sand to shave them off.
The conventional excavating ripple has a shortcoming that, since the excavating ripple is of a wedge-type of a straight-line shape, it is not always to operate suitably in response to a movement of the bucket body doing excavating by drawing an arc and therefore sharpness of the excavating ripple cannot be optimized for the excavating a firm ground or even if the excavating ripple is used in the excavating of such firm grounds, it becomes worn away easily, losing sharpness of the ripple. That is, the excavating ripple having such the conventional straight-line shape presents a difficulty in its excavating power and durability.
To solve this kind of inconvenience, a curved excavating ripple is disclosed in Japanese Utility Model Application No. sho 47- 2701, Japanese Utility Model Application No. sho 47-15401 or a like. In the excavating ripple disclosed in the Japanese Utility Model Application No. sho 47-15401, though its attaching root portion and excavating ripple body portion are curved as a whole, its single excavating ripple body itself is of the wedge -type of a straight-line shape. On the other hand, in the excavating ripple disclosed in the Japanese Utility Model Application No. sho 47-15401, one face of the ripple only is curved and its other face is almost flat.
Inventors of the present invention have made comparison tests on performance between the excavating ripples disclosed in both the Japanese Utility Model Applications and conventional excavating ripples. However, it is concluded from the comparison test that the excavating ripples disclosed in both the Japanese Utility Model Applications are not superior to the conventional excavating ripples in terms of its excavating power and durability. In view of the above, it is an object of the present invention to provide an excavating ripple capable of dramatically improving its excavating power and durability.

BEST MODE FOR CARRYING OUT THE INVENTION

The best mode for carrying out this invention will be explained below with reference to the drawings. The explanation is in concrete terms using embodiments.

⋄ The 1st Embodiment

Figure 1A is a perspective view showing an appearance of an excavating ripple 1a in a state of facing upward according to a first embodiment of the present invention. Figure 1B is a perspective view showing an appearance of the excavating ripple 1a in a state of facing downward according to the first embodiment of the present invention. Figure 2A is a perspective view showing a characteristing portion from a viewpoint of a design and a patent, (hereinafter referred to simply as the characteristing portion), shown by a solid line, of the appearance of the excavating ripple 1a in a state of facing upward according to the first embodiment of the present invention. Figure 2B is a perspective view showing a characteristing portion shown by a solid line, of the appearance of the excavating ripple 1a in a state of facing downward according to the first embodiment of the present invention. Figure 3A is a plan view of the excavating ripple 1a according to the first embodiment of the present invention. Figure 3B is a bottom view of the excavating ripple 1a according to the first embodiment of the present invention. Figure 3C is a left side view of the excavating ripple 1a according to the first embodiment of the present invention. Figure 3D is a right side view of the excavating ripple la according to the first embodiment of the present invention. Figure 3E is a front view of the excavating ripple 1a according the first embodiment of the present invention. Figure 3F is a rear view of the excavating ripple 1a according to the first embodiment of the present invention. Figure 4A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1a according to the first embodiment of the present invention. Figure 4B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1a according to the first embodiment of the present invention. Figure 4C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1a according to the first embodiment of the present invention. Figure 4D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1a according to the first embodiment of the present invention. Figure 4E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1a according to the first embodiment of the present invention. Figure 4F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1a according to the first embodiment of the present invention. Figure 5 is a perspective view showing configurations of an excavating bucket 4 of a power shovel according to the first embodiment of the present invention. Figure 6A is a perspective view showing a joined state of the excavating ripple 1a and an adaptor 5 according to the first embodiment of the present invention. Figure 6B is a perspective view showing a separated state of the excavating ripple 1a and the adaptor 5 according to the first embodiment of the present invention. As shown in Fig. 5, the wedge-type excavating ripple 1a is pinned on a specified arm 21 of an excavating machine for construction so as to be rotatable. The wedge-type excavating ripple 1a is attached to an extreme tip of the bucket body 4 of an excavating machine operated so as to draw an arc around a pin 3 by extension and contraction of the arm rod 22. That is, as shown in Fig. 1A to Fig. 4, the excavating ripple 1a includes a hollow base 6a having a hollow recess into which the adaptor 5 (see Figs. 5, 6A and 6B) serving as a joining member to join the bucket body 4 with the excavating ripple 1a together is inserted and a thick-walled, tapering solid tip end 7a. An inner face 8a of the excavating ripple 1a faces to a rotation center of the arc and an outer face 9a of the excavating ripple 1 faces against the rotation center of the arc. The excavating ripple 1a is so configured as to be curved and warped toward a direction of the rotation center along its base portion to its tip end portion. A tip edge of the excavating ripple 1a is so constructed to form a straight line being wide and being orthogonal to a longitudinal direction of the excavating ripple 1a.
According to the excavating ripple 1a of the first embodiment of the present invention, since it is of a wedge-type of a curved shape, it can be operated suitably in response to the movement of the bucket body 4 which is adapted to do excavating while drawing the arc, thus eliminating wasteful distribution of force which enables sharpness to be provided to excavating work in firm grounds and abrasion to be remarkably reduced. That is, excavating power and durability of the excavating ripple 1a are greatly improved. Moreover, by constructing the base portion of the excavating ripple 1a using common steel or high strength steel such as SS400 and the tip portion using abrasion resistant steel such as HARDOX 400, 500, and 600 (trade names of products from SSAB Sweden Steel Corporation), the durability of the excavating ripple la can be improved without an increase in costs. It is not always necessary to construct all regions of the inner face 8a and outer face 9a so as to have curved faces and, for example, only the thick-walled taping solid tip end may be worked so as to be curved. Experiments show that a relation between a mean radius of curvature "r" of at least one curved region (the inner face in this embodiment) out of curved regions at the inner and outer faces and a mean radius "R" of the arc drawn by the bucket body 4 around the pin 3 that can satisfy an expression of "0.8 R < r < 1.2R" is very preferable from the viewpoint of durability and excavating power. Furthermore, a modified example shows that the relation among a mean radius of curvature "r1" of curved regions at the inner face 6a, a mean radius of curvature "r2" of curved regions at the outer face 7a and a mean radius "R" of the arc drawn by the bucket body 4 around the pin 3 that can satisfy an expression of "0.8R < (r1 + r2) / < 1.2 R is also very preferable from the viewpoint of durability and excavating power.

⋄ The 2nd Embodiment

Figure 7A is a perspective view showing an appearance of an excavating ripple 1b in a state of facing upward according to a second embodiment of the present invention.
Figure 7B is a perspective view showing an appearance of the excavating ripple 1b in a state of facing downward according to the second embodiment of the present invention. Figure 8A is a perspective view showing a characteristing portion from a viewpoint of a design and a patent, shown by a solid line, of the appearance of the excavating ripple 1b in a state of facing upward according to the second embodiment of the present invention. Figure 8B is a perspective view showing a characteristing portion shown by a solid line, of the appearance of the excavating ripple 1b in a state of facing downward according to the second embodiment of the present invention. Figure 9A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 9B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 9C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 9D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 9E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure. 9F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 10A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 10B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 10C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 10D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 10E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 10F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1b according to the second embodiment of the present invention. Figure 11 is a perspective view showing configurations of an excavating bucket 4 of a power shovel according to the second embodiment of the present invention. Figure 12A is a perspective view showing a joined state of the excavating ripple 1b and an adaptor 5 according to the second embodiment of the present invention. Figure 12B is a perspective view showing a separated state of the excavating ripple 1b and the adaptor according to the second embodiment of the present invention.
The excavating ripple 1a of the first embodiment has gentle curvedness while the excavating ripple 1b of the second embodiment has sharp curvedness. In figures for the second embodiment, same reference numbers or same reference numbers with "b" added are assigned to parts having the same functions as those of the first embodiment and their descriptions are simplified. This is applied to other embodiments hereinafter. Thus, in the second embodiment, the almost same effects as obtained in the first embodiment can be achieved.

⋄ The 3rd Embodiment

Figure 13A is a perspective view showing an appearance of an excavating ripple 1c in a state of facing upward according to a third embodiment of the present invention. Figure 13B is a perspective view showing an appearance of the excavating ripple 1c in a state of facing downward according to the third embodiment of the present invention. Figure 14A is a perspective view showing a characteristing portion from a viewpoint of a design and a patent, shown by a solid line, of the appearance of the excavating ripple 1c in a state of facing upward according to the third embodiment of the present invention. Figure 14B is a perspective view showing a characteristing portion shown by a solid line, of the appearance of the excavating ripple 1c in a state of facing downward according to the third embodiment of the present invention. Figure 15A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 15B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 15C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 15D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 15E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 15F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 16A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 16B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 16C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 16D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple according to the third embodiment of the present invention. Figure 16E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 16F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1c according to the third embodiment of the present invention. Figure 17 is a perspective view showing configurations of an excavating bucket 4 of a power shovel according to the third embodiment of the present invention. Figure 18A is a perspective view showing a joined state of the excavating ripple 1c and an adaptor 5 according to the third embodiment of the present invention. Figure 18B is a perspective view showing a separated state of the excavating ripple 1c and the adaptor 5 according to the third embodiment of the present invention. In figures for the third embodiment, same reference numbers or same reference numbers with "c" added are assigned to parts having the same functions as those of the first embodiment and their descriptions are simplified. In the excavating ripple 1c of the third embodiment, each of its inner face 8c facing to a rotation center (pin) of the arc and its outer face 9c facing against the rotation center is curved and warped at one place toward a direction of the rotation center along the base portion of the excavating ripple to its tip portion. For example, preferably, the excavating ripple 1c is curved and warped at a boundary between a thick-walled, taping solid tip end 7c and a hollow base 6c or in the vicinity of the boundary. A tip edge of the excavating ripple 1c is so constructed to form a straight line being wide and being orthogonal to a longitudinal direction of the excavating ripple 1c. Thus, in the third embodiment, the almost same effects as obtained in the first embodiment can be achieved.

⋄ The 4th Embodiment

Figure 19A is a perspective view showing an appearance of an excavating ripple 1d in a state of facing upward according to a fourth embodiment of the present invention. Figure 19B is a perspective view showing an appearance of the excavating ripple 1d in a state of facing downward according to the fourth embodiment of the present invention. Figure 20A is a perspective view showing a characteristing portion from a viewpoint of a design and a patent, shown by a solid line, of the appearance of the excavating ripple 1d in a state of facing upward according to the fourth embodiment of the present invention. Figure 20B is a perspective view showing a characteristing portion, shown by a solid line, of the appearance of the excavating ripple 1d in a state of facing downward according to the fourth embodiment of the present invention. Figure 21A is a plan view of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 21B is a bottom view of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 21C is a left side view of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 21D is a right side view of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 21E is a front view of the excavating ripple 1d according the fourth embodiment of the present invention. Figure 21F is a rear view of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 22A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 22B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 22C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 22D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 22E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 22F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1d according to the fourth embodiment of the present invention. Figure 23 is a perspective view showing configurations of an excavating bucket 4 of a power shovel according to the fourth embodiment of the present invention. Figure 24A is a perspective view showing a joined state of the excavating ripple 1d and an adaptor 5 according to the fourth embodiment of the present invention. Figure 24B is a perspective view showing a separated state of the excavating ripple 1d and the adaptor 5 according to the fourth embodiment of the present invention. In figures for the fourth embodiment, same reference numbers or same reference numbers with "d" added are assigned to parts having the same functions as those of the first embodiment and their descriptions are simplified.
In the excavating ripple 1d of this embodiment, each of its inner face 8d facing to a rotation center (pin) of the arc and its outer face 9d facing against the rotation center is curved and warped at two places toward a direction of the rotation center along the base portion of the excavating ripple to its tip portion. For example, preferably, the excavating ripple 1d is curved and warped at a boundary between a thick-walled, taping solid tip end 7d and a hollow base 6d or in the vicinity of the boundary. A tip edge of the excavating ripple 1d is so constructed to form a straight line being wide and being orthogonal to a longitudinal direction of the excavating ripple 1d. Thus, in the fourth embodiment, the almost same effects as obtained in the first embodiment can be achieved.

⋄ The 5th Embodiment

Figure 25A is a perspective view showing an appearance of an excavating ripple 1e in a state of facing upward according to a fifth embodiment of the present invention. Figure 25B is a perspective view showing an appearance of the excavating ripple 1e in a state of facing downward according to the fifth embodiment of the present invention. Figure 26A is a perspective view showing a characteristing portion from a viewpoint of a design and a patent, shown by a solid line, of the appearance of the excavating ripple 1e in a state of facing upward according to the fifth embodiment of the present invention. Figure. 26B is a perspective view showing a characteristing portion shown by a solid line, of the appearance of the excavating ripple 1e in a state of facing downward according to the fifth embodiment of the present invention. Figure 27A is a plan view of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 27B is a bottom view of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 27C is a left side view of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 27D is a right side view of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 27E is a front view of the excavating ripple 1e according the fifth embodiment of the present invention. Figure 27F is a rear view of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 28A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 28B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 28C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 28D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 28E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 28F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1e according to the fifth embodiment of the present invention. Figure 29 is a perspective view showing configurations of an excavating bucket 4 of a power shovel according to the fifth embodiment of the present invention. Figure 30A is a perspective view showing a joined state of the excavating ripple 1e and an adaptor 5 according to the fifth embodiment of the present invention. Figure 30B is a perspective view showing a separated state of the excavating ripple 1e and the adaptor 5 according to the fifth embodiment of the present invention. In figures for the fifth embodiment, same reference numbers or same reference numbers with "e" added are assigned to parts having the same functions as those of the first embodiment and their descriptions are simplified.
In the excavating ripple 1e of the fifth embodiment, its tip portion is so configured that both the inner face 8e and outer face 9e are tapered in width. Thus, in the fifth embodiment, the almost same effects as obtained in the first embodiment can be achieved.

⋄ The 6th Embodiment

Figure 31A is a perspective view showing an appearance of an excavating ripple 1f in a state of facing upward according to a sixth embodiment of the present invention. Figure 31B is a perspective view showing an appearance of the excavating ripple 1f in a state of facing downward according to the sixth embodiment of the present invention. Figure 32A is a perspective view showing a characteristing portion from a viewpoint of a design and a patent, shown by a solid line, of the appearance of the excavating ripple 1f in a state of facing upward according to the sixth embodiment of the present invention. Figure 32B is a perspective view showing a characteristing portion shown by a solid line, of the appearance of the excavating ripple 1f in a state of facing downward according to the sixth embodiment of the present invention. Figure 33A is a plan view of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 33B is a bottom view of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 33C is a left side view of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 33D is a right side view of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 33E is a front view of the excavating ripple 1f according the sixth embodiment of the present invention. Figure 33F is a rear view of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 34A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 34B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 34C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 34D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 34E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 34F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1f according to the sixth embodiment of the present invention. Figure 35 is a perspective view showing configurations of an excavating bucket 4 of a power shovel according to the sixth embodiment of the present invention. Figure 36A is a perspective view showing a joined state of the excavating ripple 1f and an adaptor 5 according to the sixth embodiment of the present invention. Figure 36B is a perspective view showing a separated state of the excavating ripple 1f and the adaptor 5 according to the sixth embodiment of the present invention. In figures for the sixth embodiment, same reference numbers or same reference numbers with "f" added are assigned to parts having the same functions as those of the first embodiment and their descriptions are simplified. In the excavating ripple 1f of the sixth embodiment, its tip portion is so configured that both the inner face 8f and outer face 9f are tapered in width. Thus, in the sixth embodiment, the almost same effects as obtained in the first embodiment can be achieved.

⋄ The 7th Embodiment

Figure 37A is a perspective view showing an appearance of an excavating ripple 1g in a state of facing upward according to a seventh embodiment of the present invention. Figure 37B is a perspective view showing an appearance of the excavating ripple 1g in a state of facing downward according to the seventh embodiment of the present invention. Figure 38A is a perspective view showing a characteristing portion from a viewpoint of a design and a patent, shown by a solid line, of the appearance of the excavating ripple 1g in a state of facing upward according to the seventh embodiment of the present invention. Figure 38B is a perspective view showing a characteristing portion shown by a solid line, of the appearance of the excavating ripple 1g in a state of facing downward according to the seventh embodiment of the present invention. Figure 39A is a plan view of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 39B is a bottom view of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 39C is a left side view of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 39D is a right side view of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 39E is a front view of the excavating ripple 1g according the seventh embodiment of the present invention. Figure 39F is a rear view of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 40A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 40B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 40C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 40D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 40E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 40F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1g according to the seventh embodiment of the present invention. Figure 41 is a perspective view showing configurations of an excavating bucket 4 of a power shovel according to the seventh embodiment of the present invention. Figure 42A is a perspective view showing a joined state of the excavating ripple 1g and an adaptor 5 according to the seventh embodiment of the present invention. Figure 42B is a perspective view showing a separated state of the excavating ripple 1g and the adaptor 5 according to the seventh embodiment of the present invention. In figures for the seventh embodiment, same reference numbers or same reference numbers with "g" added are assigned to parts having the same functions as those of the first embodiment and their descriptions are simplified. In the excavating ripple 1g of the seventh embodiment, its tip portion is so configured that both the inner face 8g and outer face 9g are tapered in width. Thus, in the seventh embodiment, the almost same effects as obtained in the first embodiment can be achieved.

⋄ The 8th Embodiment

Figure 43A is a perspective view showing an appearance of an excavating ripple 1h in a state of facing upward according to an eighth embodiment of the present invention. Figure 43B is a perspective view showing an appearance of the excavating ripple 1h in a state of facing downward according to the eighth embodiment of the present invention. Figure 44A is a perspective view showing a characteristing portion from a viewpoint of a design and a patent, shown by a solid line, of the appearance of the excavating ripple 1h in a state of facing upward according to the eighth embodiment of the present invention. Figure 44B is a perspective view showing a characteristing portion shown by a solid line, of the appearance of the excavating ripple 1h in a state of facing downward according to the eighth embodiment of the present invention. Figure 45A is a plan view of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 45B is a bottom view of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 45C is a left side view of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 45D is a right side view of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 45E is a front view of the excavating ripple 1h according the eighth embodiment of the present invention. Figure 45F is a rear view of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 46A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 46B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 46C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 46D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 46E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 46F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1h according to the eighth embodiment of the present invention. Figure 47 is a perspective view showing configurations of an excavating bucket 4 of a power shovel according to the eighth embodiment of the present invention. Figure 48A is a perspective view showing a joined state of the excavating ripple 1h and an adaptor 5 according to the eighth embodiment of the present invention. Figure 48B is a perspective view showing a separated state of the excavating ripple 1h and the adaptor 5 according to the eighth embodiment of the present invention. In figures for the eighth embodiment, same reference numbers or same reference numbers with "g" added are assigned to parts having the same functions as those of the first embodiment and their descriptions are simplified. In the excavating ripple 1h of the eighth embodiment, its tip portion is so configured that both the inner face 8h and outer face 9h are tapered in width. Thus, in the eighth embodiment, the almost same effects as obtained in the first embodiment can be achieved.

⋄ The 9th Embodiment

Figure 49A is a perspective view showing an appearance of an excavating ripple 1i in a state of facing upward according to a ninth embodiment of the present invention. Figure 49B is a perspective view showing an appearance of the excavating ripple 1i in a state of facing downward according to the ninth embodiment of the present invention. Figure 50A is a perspective view showing a characteristing portion from a viewpoint of a design and a patent, shown by a solid line, of the appearance of the excavating ripple 1i in a state of facing upward according to the ninth embodiment of the present invention. Figure 50B is a perspective view showing a characteristing portion shown by a solid line, of the appearance of the excavating ripple 1i in a state of facing downward according to the ninth embodiment of the present invention. Figure 51A is a plan view of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 51B is a bottom view of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 51C is a left side view of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 51D is a right side view of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 51E is a front view of the excavating ripple 1i according the ninth embodiment of the present invention. Figure 51F is a rear view of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 52A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 52B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 52C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 52D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 52E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 52F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1i according to the ninth embodiment of the present invention. Figure 53 is a perspective view showing configurations of an excavating bucket 4 of a power shovel according to the ninth embodiment of the present invention. Figure 54A is a perspective view showing a joined state of the excavating ripple 1i and an adaptor 5 according to the ninth embodiment of the present invention. Figure 54B is a perspective view showing a separated state of the excavating ripple 1i and the adaptor 5 according to the ninth embodiment of the present invention. In figures for the ninth embodiment, same reference numbers or same reference numbers with "i" added are assigned to parts having the same functions as those of the first embodiment and their descriptions are simplified. In the excavating ripple 1i of the ninth embodiment, its tip portion is so configured that both the inner face 8i and outer face 9i are tapered in width. Thus, in the ninth embodiment, the almost same effects as obtained in the first embodiment can be achieved.

⋄ The 10th Embodiment

Figure 55A is a perspective view showing an appearance of an excavating ripple 1j in a state of racing upward according to a tenth embodiment of the present invention. Figure 55B is a perspective view showing an appearance of the excavating ripple 1j in a state of facing downward according to the tenth embodiment of the present invention. Figure 56A is a perspective view showing a characteristing portion from a viewpoint of a design and a patent, shown by a solid line, of the appearance of the excavating ripple 1j in a state of facing upward according to the tenth embodiment of the present invention. Figure 56B is a perspective view showing a characteristing portion shown by a solid line, of the appearance of the excavating ripple 1j in a state of facing downward according to the tenth embodiment of the present invention. Figure 57A is a plan view of the excavating ripple 1j according to the tenth embodiment of the present invention. Figure 57B is a bottom view of the excavating ripple 1j according to the tenth embodiment of the present invention. Figure 57C is a left side view of the excavating ripple 1j according to the tenth embodiment of the present invention. Figure 57D is a right side view of the excavating ripple 1j according to the tenth embodiment of the present invention. Figure 57E is a front view of the excavating ripple 1j according the tenth embodiment of the present invention. Figure 57F is a rear view of the excavating ripple according to the tenth embodiment of the present invention. Figure 58A is a plan view of the characteristing portion, shown in a solid line, of the excavating ripple 1j according to the tenth embodiment of the present invention. Figure. 58B is a bottom view of the characteristing portion, shown in a solid line, of the excavating ripple 1j according to the tenth embodiment of the present invention. Figure 58C is a left side view of the characteristing portion, shown in a solid line, of the excavating ripple 1j according to the tenth embodiment of the present invention. Figure 58D is a right side view of the characteristing portion, shown in a solid line, of the excavating ripple 1j according to the tenth embodiment of the present invention. Figure 58E is a front view of the characteristing portion, shown in a solid line, of the excavating ripple 1j according to the tenth embodiment of the present invention. Figure 58F is a rear view of the characteristing portion, shown in a solid line, of the excavating ripple 1j according to the tenth embodiment of the present invention. Figure 59 is a perspective view showing configurations of an excavating bucket 4 of a power shovel according to the tenth embodiment of the present invention. Figure 60A is a perspective view showing a joined state of the excavating ripple 1j and an adaptor 5 according to the tenth embodiment of the present invention. Figure 60B is a perspective view showing a separated state of the excavating ripple 1j and the adaptor 5 according to the tenth embodiment of the present invention. In figures for the tenth embodiment, same reference numbers or same reference numbers with "j" added are assigned to parts having the same functions as those of the first embodiment and their descriptions are simplified. In the excavating ripple 1i of the tenth embodiment, its tip portion is so configured that both the inner face 8j and outer face 9j are tapered in width. Thus, in the tenth embodiment, the almost same effects as obtained in the first embodiment can be achieved.
As described above, according to configurations of the present invention, the excavating ripple is of a wedge type of a curved or flexion shape and therefore it can be operated suitably in response to a movement of the bucket body adapted to do excavating while drawing the arc, thus eliminating wasteful distribution of force which enables sharpness to be provided to excavating work in a firm ground and abrasion to be remarkably reduced. That is, excavating power and durability of the excavating ripple are greatly improved.

Claims

An excavating ripple being of a wedge type for use by being attached to an excavating machine bucket body pinned on a specified arm of an excavating machine so as to be rotatable and operated to draw an arc around a pin to do excavating, characterized in that said excavating ripple includes an inner face portion facing to a rotation center of said arc and an outer face portion facing against said rotation center wherein said inner face portion and outer face portion are curved and warped toward a direction of said rotation center along its base portion to its tip portion.
The excavating ripple being of the wedge type according to Claim 1, characterized in that said excavating ripple further includes a hollow base having a hollow recess into which a joining member used to join said bucket body with said excavating ripple, a thick-walled, tapering tip end, wherein said thick-walled, tapering tip end only is curved and warped.
The excavating ripple according to Claim1 or Claim 2, wherein a relation between a mean radius of curvature "r" of at least one curved region out of curved regions at said inner and outer face portions and a mean radius "R" of said arc drawn by said excavating machine bucket body around said pin satisfies an expression of 0.8 R < r < 1.2R.
The excavating ripple according to Claim 1 or Claim 2, wherein a relation among a mean radius of curvature "r1" of curved regions at said inner face portion, a mean radius of curvature "r2" of curved regions at said outer face portion and a mean radius "R" of said arc drawn by said excavating machine bucket body around said pin satisfies an expression of 0.8R < (r1 + r2) / < 1.2 R.
The excavating ripple according to any one of Claims 1, 2, 3, and 4, wherein said base portion of said excavating ripple is made up of common steel or high strength steel and said tip portion is made up of abrasion resistant steel.
The excavating ripple according to any one of Claims 1, 2, 3, and 4, wherein a tip edge of said excavating ripple is so constructed to form a straight line being wide and being orthogonal to a longitudinal direction of said excavating ripple.
The excavating ripple according to any one of Claims 1, 2, 3, and 4, wherein said tip portion of said excavating ripple is so configured that said both inner face portion and outer face portion are tapered in width.
An excavating ripple for use by being attached to an excavating machine bucket body pined on a specified arm of an excavating machine so as to be rotatable and operated to draw an arc around a pin to do excavating, characterized in that said excavating ripple includes an inner face portion facing to a rotation center of said arc and an outer face portion facing against said rotation center and wherein each of said inner face portion and said outer face portion is curved and warped at one place or two places toward a direction of said rotation center along its base portion to its tip portion.
The excavating ripple according to Claim 8, characterized in that said excavating ripple further includes a hollow base having a hollow recess into which a joining member used to join said bucket body with said excavating ripple and a thick-walled, tapering tip end, wherein said excavating ripple is curved and warped at a boundary between said thick-walled, taping solid tip end and said hollow base or in the vicinity of said boundary.
The excavating ripple according to Claim 8 or Claim 9, wherein a tip edge of said excavating ripple is so constructed to form a straight line being wide and being orthogonal to a longitudinal direction of said excavating ripple.
The excavating ripple according to Claim 8 or Claim 9, wherein said tip portion of said excavating ripple is so configured that said both inner face portion and outer face portion are tapered in width.