WO2001029331A1

WO2001029331A1 - Excavating ripper (tooth)

Info

Publication number: WO2001029331A1
Application number: PCT/IB2000/001052
Authority: WO
Inventors: Kazutoshi Ishizuka; Shingi Yanai
Original assignee: Shimura, Kiyomitsu; Mitsuhashi, Takashi
Priority date: 1999-10-07
Filing date: 2000-06-29
Publication date: 2001-04-26
Also published as: AU7547200A; JP2006207113A; EP1174546A1; EP1174546A4

Abstract

An excavating ripper (1a) so constituted as to do excavating by being attached to the arc-drawing front tip end of an excavating machine bucket body (4) rotatably pinned (3) to a specified arm (21) of a construction excavating machine such as a power shovel and drawing an arc around the pin (3) when an arm rod (22) is extended or contracted, the ripper (1) comprising a hollow base (6a) provided with a hollow recess to receive an adapter (5) serving as a joining member for joining the bucket body (4) with the ripper (1), and a thick-walled, tapering solid tip end (7a), an inner surface (8a) facing the rotation center of the arc and an outer surface (9A) opposite to the rotation center being worked so as to be curved/warped toward the rotation center from the base to the tip end, thereby improving its excavating power and durability.

Description

Drilling claw attached to tip of bucket body for drilling machine

The present invention relates to an excavation claw, and more particularly, to an excavation claw that is attached to a tip of a bucket for an excavation machine and performs an excavation operation. Background art

When excavation work is performed by operating the excavation work bucket provided at the tip of the excavator such as a power shovel, a plurality of wedge-shaped excavation claws protruding from the tip of the bucket body are used. The excavated material is excavated, and the excavated material such as excavated earth and sand is stored in the packet body, and the excavated soil is collected and collected. At this time, as shown in FIG. 61, the bucket body 3 draws an arc around the pin 7 at the tip of the arm 4 by middleing the arm rod 6, whereby the excavating claw 2 It can cut into the excavated material 8 such as earth and sand.

By the way, the conventional excavation claw is a wedge type with a straight shape, so it cannot always be adapted to the movement of the packet body excavating in an arc, and therefore, when excavating hard ground, Conventionally, there has been a drawback that the sharpness of the excavation claw cannot be used, or even if it is used, the wear is fast and the sharpness is quickly lost. In other words, the conventional straight excavation claw had difficulty in excavation power and durability.

As means for solving such inconveniences, curved excavating claws described in Japanese Utility Model Laid-Open No. 47-2701, Japanese Utility Model Laid-Open No. 47-15401, and the like have been proposed. The drilling claw described in Japanese Utility Model Laid-Open Publication No. 47-27001 is curved as a whole at the mounting base and the drilling claw main body, but the drilling claw itself has a linear wedge shape. is there. On the other hand, in the drilling claw described in Japanese Utility Model Laid-Open No. 47-15401, only one surface is curved.

Replacement paper (Kaikai IJ26) Thus, the surface facing this is almost flat.

Therefore, the inventors of the present application conducted a performance comparison experiment between the drilling claw described in both publications and the conventional drilling claw. However, from this comparative experiment, it was not possible to find a conclusion that the excavating claws described in both publications were superior in excavating force and durability to the conventional excavating claws.

The present invention has been made in view of the above circumstances, and has as its object to provide an excavation claw that can dramatically improve excavation force and durability. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The explanation will be made concretely using examples.

◊First embodiment

FIG. 1A is a perspective view showing an external configuration of a first embodiment of the present invention in a state in which the excavation claws face up, and FIG. 1B is a perspective view showing an external configuration in a state where the excavation claws face down. Fig. 2A is a perspective view in which the features of the patent in design (hereinafter simply referred to as "features") are shown by solid lines in the external configuration in which the excavation claw faces upward, and Fig. 2B is Of the external configuration with the excavation claw facing down, a perspective view showing the characteristic part by a solid line, FIG. 3A is a plan view of the excavation claw, FIG. 3B is a bottom view of the same, and FIG. Similarly, the left side view, FIG. 3D is the same right side view, FIG. 3E is the same front view, FIG. 3F is the same rear view, and FIG. 4A is the plan view of the same digging claw showing the characteristic portions by solid lines. , Fig. 4B is a bottom view, Fig. 4C is a left side view, Fig. 4D is a right side view, Fig. 4E is a front view, and Fig. 4F is a rear view. FIG. 5 is a perspective view showing the configuration of the excavator-force excavating packet according to the embodiment, FIG. 6A is a perspective view showing the coupling state of the excavating claw and the adapter, and FIG. It is a perspective view showing the separation state of the excavation claw and the adapter.

As shown in FIG. 5, the wedge-shaped excavation claw la of this example is rotatably fixed to a predetermined arm 21 of a civil digging machine, such as a power shovel, by a pin 3.

Replacement paper (Kaikai 6) With the arm as the center of rotation, the arm rod 22 is expanded and contracted, and is attached to the tip of the excavating machine bucket body 4 that draws an arc that draws an arc to perform excavation. That is, as shown in FIGS. 1A to 4F, the excavation claw 1 is an adapter (see FIGS. 5, 6A and 6B) which is a coupling member for coupling the packet body 4 and the excavation claw 1. A hollow inner end 6a provided with a hollow recess into which is inserted, a solid distal end 7a having a thick tapered shape, an inner surface 8a facing the center of rotation of the arc, and a spine at the center of rotation. The outer surface 9a is bent so as to bend / warp in the direction of the center of rotation from the base end to the front end. The tip edge of the excavation claw is wide and has a linear shape perpendicular to the longitudinal direction of the excavation claw.

According to the configuration of the excavation claw in this example, since it has a curved wedge shape, it can adapt to the movement of the packet body that excavates in an arc, so that there is no wasteful distribution of force, and the solid ground is accordingly reduced. Excavation work can be sharpened and wear is significantly reduced. That is, the excavating power and durability are significantly improved.

The base end of the drilling claw is made of ordinary steel or high-tensile steel such as SS400, while the tip end contains a large amount of carbon, silicon, and manganese.For example, HARDOX400, 500, 600 (SSAB Sweden If it is made of wear-resistant steel (such as the name of Steel Corporation), durability can be improved without incurring a rise in cost.

In addition, it is not always necessary to make the entire area of the inner surface and the outer surface curved surfaces. For example, only the solid front end portion may be curved.

According to experiments, the average radius of curvature r of at least one of the curved regions (the inner surface in this example) among the curved regions on the inner surface and the outer surface, and when the bucket body has the pin as the center of rotation, It is very preferable that the relationship with the average radius R of the drawn arc satisfies 0.8R <r <l.2R from the viewpoint of durability and excavation.

As a modified example, an average radius of curvature r1 of the curved region on the inner side surface, an average radius of curvature r2 of the curved region on the outer side surface,

Replacement form (Rule 26) Even if the relationship with the average radius R of the arc drawn with the pin as the center of rotation satisfies 0.8R <(r1 + r2) / 2 <1.2R, durability and excavation This is very preferable from the viewpoint of.

◊Second embodiment

FIG. 7A is a perspective view showing an external configuration of the second embodiment of the present invention in a state in which the excavation claws face upward, FIG. 7B is a perspective view showing an external configuration in a state where the excavation claws face down, Fig. 8A is a perspective view showing a characteristic part (hereinafter simply referred to as "characteristic part") of a design in the appearance configuration in which the excavation claw faces upward by a solid line, and Fig. 8B is a perspective view of the same. , The perspective view showing the characteristic parts in solid lines in a state where it faces downward, FIG. 9A is a plan view of the excavation claw, FIG. 9B is a bottom view of the same, and FIG. 9C is a left side view of the same. Fig. 9D is also a right side view, Fig. 9E is a front view, Fig. 9F is a rear view, Fig. 10A is a plan view of the same excavation claw showing a characteristic portion by a solid line, Fig. 10B is a bottom view, FIG. 10C is a left side view, FIG. 10D is a right side view, FIG. 10E is a front view, FIG. 10F is a rear view, 11 is a perspective view showing a configuration of a bucket for excavating shovel force according to the embodiment, FIG. 12A is a perspective view showing a coupling state between the excavating claw and the adapter, and FIG. It is a perspective view showing the separation state of the excavation claw and the adapter.

The excavation claw la of the first embodiment has a moderate curvature, whereas the excavation claw of the second embodiment has a strong curvature. In the drawings of the second embodiment, the same numerals are given to the portions corresponding to the respective portions of the first embodiment, and b is added to simplify the description. The same applies to the following embodiments. According to the second embodiment, substantially the same effects as those described in the first embodiment can be obtained. ◊Third embodiment

FIG. 13A is a perspective view showing an external configuration of a third embodiment of the present invention in a state in which the excavation claws face up, and FIG. 13B is a perspective view showing an external configuration in a state where the excavation claws face down. Fig. 14A shows the design features of the external appearance configuration with the excavation claw facing up.

Replacement paper (Kaikai 6) FIG. 14B is a perspective view of the external configuration in which the excavation claw is facing down, in which the characteristic portion is indicated by a solid line, and FIG. 15B is a bottom view, FIG. 15C is a left side view, FIG. 15D is a right side view, FIG. 15E is a front view, FIG. 15F is a rear view, and FIG. 16A is a plan view of the excavation claw showing the characteristic portion by a solid line, FIG. 16B is a bottom view, FIG. 16C is a left side view, FIG. 16D is a right side view, and FIG. 16E is a front view FIG. 16F is a rear view of the same, FIG. 17 is a perspective view showing the configuration of the excavator-force excavating packet according to the embodiment, FIG. 18A is a perspective view showing the coupling state of the excavating claw and the adapter, FIG. 18B is a perspective view showing a separated state of the excavation claw and the adapter.

The excavation claw lc of this example has an inner surface facing the rotation center (pin) of the arc, an outer surface facing away from the rotation center, and a base from the base end to the tip of the excavation claw. A bending process is performed in a mode of bending / warping once in the direction of the rotation center. For example, the excavation claw is preferably bent at or near the boundary between the solid distal end portion 7c and the hollow base end portion 6c. Here, the tip edge of the excavation claw lc is wide and has a linear shape orthogonal to the longitudinal direction of the excavation claw. According to the third embodiment, substantially the same effects as described in the first embodiment can be obtained.

◊ Fourth embodiment

FIG. 19A is a perspective view showing an external configuration of the fourth embodiment of the present invention in a state in which the excavation claws face up, and FIG. 19B is a perspective view showing an external configuration in a state where the excavation claws face down. Fig. 2 Fig. 2 OA is a perspective view showing a characteristic part (hereinafter simply referred to as "characteristic part") of a patent in design, with a solid line, in the external configuration in which the excavation claw faces upward. Of the external configuration in which the excavation claw is facing down, a perspective view showing the characteristic part by a solid line, FIG. 21A is a plan view of the excavation claw, FIG. 21B is a bottom view thereof, and FIG. Left side view, Figure 21D is the same right side view, Figure 21E is the same front view, Figure 21F is the same rear view, Figure 22A is the plan view of the same drilling claw showing the characteristic parts by solid lines, Figure 22B shows the same

Replacement form (Rule 26) FIG. 22C is a left side view, FIG. 22D is a right side view, FIG. 22E is a front view, FIG. 22F is a rear view, and FIG. 23 is a shovel according to the embodiment. FIG. 24A is a perspective view showing a configuration of a bucket for force excavation, and FIG. 24A is a perspective view showing a coupling state of the claw for excavation and an adapter. FIG. It is a perspective view showing a state.

The excavation claw Id in this example has an inner surface facing the center of rotation (pin) of the arc, an outer surface facing away from the center of rotation, and a proximal end to a distal end of the excavation claw. A bending process is performed in a mode of bending / warping twice in the direction of the rotation center. For example, the excavation claw Id is preferably bent at or near the boundary between the solid distal end 7d and the hollow proximal end 6d. Here, the tip 緣 of the excavation claw Id is wide and has a linear shape orthogonal to the longitudinal direction of the excavation claw. According to the fourth embodiment, substantially the same effects as described in the first embodiment can be obtained.

5 Fifth embodiment

FIG. 25A is a perspective view showing an external configuration of a fifth embodiment of the present invention in a state in which the excavation claws face up, and FIG. 25B is a perspective view showing an external configuration in a state where the excavation claws face down. Fig. 26A is a perspective view showing a characteristic part (hereinafter simply referred to as "characteristic part") of the appearance in the state in which the excavation claw faces upward by a solid line, and Fig. 26B is a perspective view showing the excavation part. Of the external configuration in which the claws face down, a perspective view showing the characteristic portions with solid lines, FIG. 27A is a plan view of the same drilling claw, FIG. 27B is a bottom view thereof, and FIG. 27C is a left side view thereof. FIG. 27D is a right side view, FIG. 27E is a front view, FIG. 27F is a rear view, FIG. 28A is a plan view of the excavation claw showing a characteristic portion by a solid line, and FIG. 28B is a same view. Bottom view, Figure 28C is the same left side view, Figure 28D is the same right side view, Figure 28E is the same front view, and Figure 28F is the same back view FIG. 29 is a perspective view showing the configuration of the excavator-force excavating packet according to the embodiment, FIG. 30A is a perspective view showing the coupling state of the excavating claw and the apta, and FIG. FIG. 4 is a perspective view showing a separated state of the excavation claw and the adapter.

Replacement paper (Kaikai IJ26) At the tip of the excavation claw le in this example, the inner and outer surfaces are also tapered in width. According to the fifth embodiment, substantially the same effects as those described in the first embodiment can be obtained.

◊Sixth embodiment

FIG. 31A is a perspective view showing an appearance configuration of the sixth embodiment of the present invention with the excavation claw facing upward, and FIG. 31B is an exterior configuration of the sixth embodiment of the invention with the excavation claw facing downward. FIG. 32A is a perspective view in which, in the external appearance configuration in which the excavation claw faces upward, a characteristic portion of a design patent (hereinafter, simply referred to as a characteristic portion) is shown by a solid line, and FIG. Is a perspective view showing the features of the external configuration with the excavation claw facing down, indicated by solid lines. Fig. 33. A is a plan view of the excavation claw, Fig. 33 B is a bottom view of the same, and Fig. 33. C is the left side view, Fig. 33D is the right side view, Fig. 33E is the same front view, Fig. 33F is the same rear view, and Fig. 34B is a bottom view, FIG. 34C is a left side view, FIG. 34D is a right side view, FIG. 34E is a front view, and FIG. Similarly, a rear view, FIG. 35 is a perspective view showing the configuration of a shovel-powered excavating bucket according to the same embodiment, FIG. 36A is a perspective view showing a coupling state of the excavating claw and the adapter, FIG. 36B is a perspective view showing a state where the excavation claw and the adapter are separated. At the tip of the excavation claw If in this example, the inner and outer surfaces are also tapered in width. According to the sixth embodiment, substantially the same effects as described in the first embodiment can be obtained.

7 Seventh embodiment

FIG. 37A is a perspective view showing an appearance configuration of a seventh embodiment of the present invention with the excavation claw facing upward, and FIG. 37B is a perspective view showing an appearance configuration of the seventh embodiment of the invention with the excavation claw facing downward. Koto, Fig. 38A is a perspective view showing the features of the patent in terms of design (hereinafter simply referred to as features) in the appearance configuration with the excavation claw facing up, and Fig. 38B is Of the external configuration in which the excavation claw is facing down, a perspective view showing the characteristic part by a solid line, FIG. 39A is a plan view of the excavation claw, FIG. 39B is a bottom view of the same, and FIG. Same as the left side view, Figure

Replacement paper (Kaikai IJ26) 39D is also a right side view, FIG. 39E is also a front view, FIG. 39F is also a rear view, FIG. 4 OA is a plan view of the same excavation claw showing a characteristic part by a solid line, and FIG. 40C is a left side view, FIG. 40D is a right side view, FIG. 40E is a front view, FIG. 40F is a rear view, and FIG. 41 is a shovel force excavation according to the embodiment. FIG. 42A is a perspective view showing the coupling state of the excavation claw and the adapter, and FIG. 42B is a perspective view showing the separation state of the excavation claw and the adapter. It is. At the tip of the excavation claw lg in this example, the inner and outer surfaces are also tapered in width. According to the seventh embodiment, substantially the same effects as those described in the first embodiment can be obtained.

8Eighth embodiment

FIG. 43A is a perspective view showing an appearance configuration of the eighth embodiment of the present invention in a state in which the excavation claws face up, and FIG. 43B is a perspective view showing an appearance configuration in a state where the excavation claws face down. Fig. 44A is a perspective view showing, in a solid line, a characteristic part (hereinafter simply referred to as "characteristic part") of a design in the appearance configuration in which the excavation claw is facing up, and Fig. 44B is a perspective view showing the same. Of the external configuration with the claws facing down, a perspective view showing the characteristic parts by solid lines, FIG. 45A is a plan view of the same drilling claw, FIG. 45B is a bottom view of the same, and FIG. 45C is a left side view of the same. 45D is also a right side view, FIG. 45E is also a front view, FIG. 45F is also a rear view, FIG. 46A is a plan view of the same excavation claw showing a characteristic portion by a solid line, and FIG. 46B is the same. Bottom view, Figure 46C is the same left side view, Figure 46D is the same right side view, Figure 46E is the same front view, and Figure 46F is the same back view FIG. 47 is a perspective view showing a configuration of a shovel-force excavating packet according to the embodiment, FIG. 48A is a perspective view showing a coupling state between the excavating claw and the apta, and FIG. FIG. 4 is a perspective view showing a separated state of the excavation claw and the adapter. At the tip of the excavation claw lh in this example, the inner side surface and the outer side surface also have a tapered width. According to the eighth embodiment, substantially the same effects as described in the first embodiment can be obtained.

◊Ninth embodiment

Replacement paper (Kaikai 6) FIG. 49A is a perspective view showing an appearance configuration of a ninth embodiment of the present invention in a state where the excavation claws face up, and FIG. 49B is a perspective view showing an appearance configuration of the state in which the excavation claws face down. Fig. 5 Fig. 5 OA is a perspective view showing the design features (hereinafter simply referred to as "features") of the appearance configuration with the excavation claw facing up by solid lines, and Fig. 50B is the same. Of the external configuration in which the excavation claw is facing down, a perspective view showing the characteristic portion by a solid line, FIG. 51A is a plan view of the excavation claw, FIG. 51B is a bottom view of the same, and FIG. Left side view, Fig. 51D is the same right side view, Fig. 51E is the same front view, Fig. 51F is the same rear view, Fig. 52A is the plan view of the same excavation claw showing the features by solid lines, Fig. 52B is the same bottom view, Fig. 52C is the same left view, Fig. 52D is the same right view, Fig. 52E is the same front view, and Fig. 52F is the same. A rear view, FIG. 53 is a perspective view showing a configuration of the excavator force excavating packet according to the embodiment, FIG. 54A is a perspective view showing a coupling state of the excavating claw and the apta, and FIG. FIG. 3 is a perspective view showing a separated state of the excavation claw and the adapter. At the tip of the excavation claw II in this example, the inner and outer surfaces are also tapered in width. According to the ninth embodiment, substantially the same effects as those described in the first embodiment can be obtained.

◊Tenth embodiment

FIG. 55A is a perspective view showing an appearance configuration of the tenth embodiment of the present invention in a state where the excavation claws face upward, and FIG. 55B is a perspective view showing an appearance configuration of the state in which the excavation claws face downward. Fig. 56A is a perspective view in which the features of the patent (hereinafter simply referred to as "features") in design are indicated by solid lines in the external configuration in which the excavation claw faces upward, and Fig. 56B is the same. Of the external configuration with the digging nails facing down, a perspective view showing the characteristic parts with solid lines, FIG. 57A is a plan view of the digging nails, FIG. 57B is a bottom view of the same, and FIG. 57C is a left side of the same. 57D is also a right side view, FIG. 57E is also a front view, FIG. 57F is a rear view, FIG. 58A is a plan view of the excavation claw showing a characteristic part by a solid line, and FIG. Similarly, the bottom view, Figure 58C is the left side view, Figure 58D is the right side view, Figure 58E is the front view, and Figure 58F is the same FIG. 59 shows a rear view of the same embodiment.

Replacement paper (Kaikai IJ26) FIG. 6A is a perspective view showing the state of connection between the excavating claw and the adapter, and FIG. 60B is a perspective view showing the state of connection between the excavating claw and the adapter. FIG. 3 is a view showing a separated state of FIG. At the tip of the excavation claw lj in this example, the inner and outer surfaces are also tapered in width. According to the tenth embodiment, substantially the same effects as those described in the first embodiment can be obtained.

As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. Included in the invention.

As described above, according to the configuration of the present invention, since it is a wedge type having a curved shape or a positive shape, it can be adapted to the movement of the packet body excavating in an arc, so that there is no wasteful distribution of force. Even when excavating hard ground, sharpness can be exhibited and wear is significantly reduced. That is, the excavating power and durability are significantly improved.

Replacement paper (Kaikai IJ26)

Claims

1. A wedge-shaped excavator that is rotatably pinned to a predetermined arm of the excavator and that is attached to a bucket body for the excavator that excavates in an arc with the pin as the center of rotation. With nails,

The inner surface of the excavation claw facing the center of rotation of the arc and the outer surface facing away from the rotation center are bent in the direction of the rotation center from the base end to the tip end of the excavation claw. An excavating claw characterized by being curved in a warped manner.

2. The wedge-shaped excavation claw has a hollow base end provided with a hollow recess into which a coupling member for coupling the packet body and the excavation claw is inserted; 2. The excavation claw according to claim 1, wherein the excavation claw is constituted by a solid tip portion, and the bending process is performed only on the solid tip portion.

3. An average radius of curvature r of at least any one of the curved regions on the inner surface and the outer surface, and an average of the arc drawn by the excavating machine bucket body with the pin as the center of rotation. 3. The excavation claw according to claim 1, wherein the relationship with the target radius R satisfies 0.8 R <r <l.2R.

4. The average radius of curvature r1 of the curved region on the inner surface, the average radius of curvature r2 of the curved region on the outer surface, and the arc drawn by the bucket body for the excavating machine with the pin as the center of rotation. 3. The excavating claw according to claim 1, wherein the relationship with the average radius R satisfies 0.8 R <(r1 + r2) / 2 <1.2R.

5. The excavation claw according to claim 1, wherein a base end of the excavation claw is made of ordinary steel or high-tensile steel, and a tip end is made of wear-resistant steel.

Replacement paper (Kaikai IJ26)

6. The excavation claw according to claim 1, 2, 3, or 4, wherein a tip edge of the excavation claw is wide and has a linear shape orthogonal to a longitudinal direction of the excavation claw.

7. The excavation claw according to claim 1, 2, 3 or 4, wherein the inner surface and the outer surface are also tapered in width at the tip of the excavation claw.

8. An excavating claw that is rotatably pinned to a predetermined arm of the excavating machine and is used by being attached to a bucket body for an excavating machine that excavates by drawing an arc with the pin as a center of rotation. hand,

On the inner surface of the excavation claw facing the center of rotation of the arc, and on the outer surface facing away from the rotation center, from the base end to the tip of the excavation claw, once in the direction of the rotation center or An excavation claw characterized by being bent in a manner of being bent / warped twice.

9. The excavation claw comprises: a hollow base end provided with a hollow recess into which a coupling member for connecting the packet body and the excavation claw is inserted; and a solid tapered tip. 9. The excavation claw according to claim 8, wherein the excavation claw is formed at a boundary between the solid distal end portion and the hollow base end portion or in the vicinity thereof.

10. The excavation claw according to claim 8, wherein a tip edge of the excavation claw is wide and has a linear shape orthogonal to a longitudinal direction of the excavation claw.

11. The excavation claw according to claim 8, wherein, at a tip portion of the excavation claw, the inner surface and the outer surface also have a tapered width.

Replacement paper (Kaikai IJ26)