Komatsu Corporation

Tatsuo Aira

Daijirou Tanaka

Takanori Nagata

Kenichi Tanaka

Yudai Furudate

Monta Kondou

Hiroshi Yamamoto

Tsuyoshi Yoshida

Ryuusuke Komura

Akinobu Iwasaki

Yasunori Sato

Shuhei Takahashi

Daijiroh Tanaka

A bucket tooth adapter for a bucket includes a mounting portion and a nose portion extending from the mounting portion. The mounting portion includes a first body portion and a wide portion. The wide portion is wider than the first body portion and is provided between the first body portion and the nose portion.

Bucket tooth adapter, bucket tooth attachment structure, and bucket

A tooth attachment structure for a bucket includes a tooth, a pin member, and a lock member. The tooth includes a guide groove provided on an inner surface of the tooth and a pin hole provided in the guide groove. The pin member is disposed in the pin hole. The lock member is disposed in the guide groove. The lock member locks the pin member. The lock member engages the pin member by sliding toward the pin member.

Tooth attachment structure for bucket and tooth for bucket

A tooth mounting structure for a bucket includes a tooth adapter and a tooth. The tooth adapter includes a mounting portion mounted to the bucket and a nose portion extending from the mounting portion. The tooth includes an internal space for inserting the nose portion. The nose portion includes a rectangular tip portion, a rectangular base end portion and an octagonal connecting portion. An inner surface of the tooth is formed along an outer surface of the nose portion.

Tooth mounting structure for bucket and tooth for bucket

An excavation bucket includes a bottom face part, a rear face part, a pair of opposing side wall parts, teeth, a bracket, and a target penetration depth display component. The target penetration depth display component is provided around the teeth and near an end of the side wall part that forms an edge of an opening, and displays the target penetration depth. A wrist radius is an imaginary line segment connecting a center of a first hole in the bracket and the distal end of the teeth in side view. The target penetration depth display component is provided to an inside of at least one of the pair of opposing side wall parts and at a position of the side wall part corresponding to a position that has moved along the imaginary line segment from the distal end of the teeth by a specific proportional length of the wrist radius.

Excavation bucket and work vehicle

A digging tooth mounting assembly has an adapter, a digging tooth and a retainer assembly. The adapter includes a front surface facing the digging tooth, a recess formed on the front surface, an inserted part projecting from the front surface, and a insertion through hole formed in the inserted part for receiving the retainer assembly. The digging tooth includes a rear surface facing the front surface of the adapter, a projecting part formed on the rear surface for insertion into the recess, an insertion hole formed on the rear surface for receiving the inserted part, and a pair of shaft bores for receiving the retainer assembly. An outer peripheral surface of the projecting part is spaced apart from an inner bottom surface and an inner side surface of the recess.

Digging tooth mounting assembly and digging tooth

An excavating bucket includes a bottom surface section, a bucket body having a rear surface section and a side surface section, a lip section, a bracket, and teeth. The lip section is fixed to an edge portion of the bucket body at an opposite side to the rear surface section. The bracket has a hole through which a coupling pin for attaching to the arm passes. When the length of a virtual line Slinking the center of the hole and the front end of the lip section is set as a wrist radius V, a length of the longest line segment perpendicular to the virtual line Sfrom the virtual line Sto the bottom surface section is set as a bucket depth D, and the angle formed between the lip section and the virtual line Sis set as a lip angle &#x3b8;, 62&#xb0;&#x2266;&#x3b8;&#x2266;72&#xb0; and 0.7&#x2266;D/V&#x2266;0.8.

Excavating bucket and work vehicle

A ground engaging tool includes a ground engaging tool body, an excavating tooth, and an adapter. A fixed portion of the adapter is fixed to the ground engaging tool body, and an insertion portion of the adapter protrudes from the ground engaging tool body in a first direction. The excavating tooth has a tooth body, an insertion cavity and a supporting portion. The insertion cavity is formed in a base end face of the tooth body. The excavating tooth is attached to the adapter such that the insertion portion of the adapter is inserted into the insertion cavity of the excavating tooth. The supporting portion projects from an innermost part of the insertion cavity. The supporting portion of the excavating tooth opposes a front end of the insertion portion of the adapter such that a gap exists between the supporting portion and the front end of the insertion portion.

Ground engaging tool

An excavating tooth is mountable onto an adapter, and includes a tooth body, an insertion cavity and a pair of supporting portions. The tooth body has a base end face and extends in a first direction. The insertion cavity is formed in the base end face and is acceptable to the adapter. The supporting portions project from an innermost part of the insertion cavity. The insertion cavity has a depressed portion and a pair of extending recesses. The depressed portion is formed between the pair of supporting portions. The pair of extending recesses extend in the first direction, and the pair of extending recesses are formed on both sides of the pair of supporting portions. A ground engaging tool includes an excavating tool body an excavating tooth and an adapter having a fixed portion fixed to the ground engaging tool body and an insertion portion inserted in the insertion cavity.

Excavating tooth and ground engaging tool

A bearing device for uniformly distributing lubricating oil between first and second bushing sliding surfaces and a connection pin is provided. The connection pin is inserted into the first bushing that is inserted into a boss member. The second bushings are inserted into a pair of bracket members. An oil storage portion is formed at a middle part of the connection pin, and is communicated to an oil feed channel that feeds lubricating oil from the outside. First sealing members and second sealing members are disposed in the first bushing and the second bushings, respectively. A pair of first channels and a second channel are formed inside the connection pin. The first channels are opened in locations in proximity to the first sealing members. The second channel is communicated to this first channel and the oil storage chamber.

Bearing device

A spherical slide bearing has an outer ring and an inner ring slidably retained within the outer ring. A pin having a grease supply flow path extending through an interior thereof to open in an outer peripheral surface thereof is inserted into the inner ring so that the pin is circumferentially slidable, with the inner ring being equipped with a communication flow path establishing communication between a gap defined between the inner ring and the pin and a gap defined between the inner ring and the outer ring. The inlet port of the communication flow path is provided at a position where grease having flown out of an outlet port of the grease supply flow path flows after having flown through the gap between the pin and the inner ring substantially through the entire length in the axial direction of the pin.

Growing community of inventors

Hirakata, Japan

Tatsuo Aira