Caterpillar Sarl

Takeshi Tsuneyoshi

Takahiro Iwamoto

Kentaro Nakayama

Kazumasa Matsumura

Shuji Kidoguchi

Takeshi Nakamura

Akito Nakai

Kunitomo Shimizu

Corey Lee Gorman

Eiji Akahane

Tetsuji Takaoka

Takuya Yamamoto

Kouji Kishida

Tetsuo Nishiguchi

Ryo Iguchi

Kimikage Tanaka

Marilyn E Worley

Masaya Yorifuji

Michihiro Izawa

Shinichi Nishiyama

Koichi Andatsu

Andy Fung

Tomohiro Fujii

Takayuki Naito

Masato Tamura

Dharmesh Kumar

A work machine comprises a main body, a cab riser, and a shaft. The cab riser includes a cab and a frame, the cab being uprightly positioned on the work machine in a first position, and being tilted forward in a second position, and the frame comprising a first plate to contact a second plate provided on the main body in the first position. The cab riser is rotatable about the shaft in clockwise and counterclockwise directions to and from the first position and the second position. The first plate and the second plate can be clamped together by a clamping assembly in the first position, the clamping assembly including one or more clamps to clamp the first plate and the second plate, and the clamping assembly is mounted on the main body.

Systems, assemblies, and methods for locking cab to main body of work machine

Problem to Be Solved: To provide a frame of a construction machine that can prevent a crack caused by a torsion load. Solution: The frame comprises the center member including the bottom plate and a pair of left and right vertical plates disposed on a top surface of the bottom plate, a pair of left and right skirt members horizontally disposed on both left and right sides of the center member, and a plurality of beam members disposed between the center member and right skirt member and between the center member and left skirt member, respectively. The plurality of beam members include the plate beam member disposed in a perpendicularly erected manner against the bottom plate. The first and second bent parts are formed on the plate beam member. The plate beam member has the first part extending outward in a horizontal direction from the center member to the first bent part, the second part extending from the first bent part to second bent part, and the third part extending outward in a horizontal direction from the second bent part to the skirt member.

Frame for a construction machine

To provide a frame of construction machines that can enhance the rigidity of support members. The frame comprises a bottom plate, a pair of vertical plates being disposed spacedly in a width direction on a top surface of the bottom plate and extending longitudinally and vertically, and multiple support members extending toward outside in a width direction from breadthwise outer surface of the pair of vertical plates. At least one of the multiple support members comprises a vertical wall perpendicular to the bottom plate. A breadthwise inner end part of vertical wall is welded on breadthwise outer surface of one of pair of vertical plates. A lower end of the pair of vertical plates is welded intermittently on a top surface of the bottom plate, and there exists a non-welded part where the lower end of the vertical plates is not welded on the top surface of the bottom plate under breadthwise inner end part of the vertical wall.

Frame of construction machine

A work machine comprising a main body and a cab riser. The cab riser includes a cab and a frame comprising a first plate to contact a second plate provided on the main body in a first position which the cab is uprightly positioned on the work machine. The first and the second plate are coupled together to sandwich a key plate in the first position, the key plate being disposed in a space created by a first recess on a lower surface of the first plate and a second recess on an upper surface of the second plate, the second recess being aligned with the first recess vertically in the first position, and the key plate includes a first contact surface as a slope surface and a top surface being adjacent to the slope surface in the cross sectional view of the key plate.

Systems, assemblies, and methods for implementing key plate for locking cab to main body of work machine

A machine is adapted for operation powered by any one of a plurality of interchangeable power sources. The machine may include an undercarriage configured for supporting ground engagement members that propel the machine and an upper structure rotatably supported on the undercarriage. The upper structure may include a swing frame, with the swing frame supporting an operator cab, any one of the plurality of interchangeable power sources, hydraulic components, electrical components, and a counterweight disposed at a first end of the swing frame. The counterweight may include a hollowed out portion facing toward the swing frame. The hollowed out portion of the counterweight may be centrally aligned with a center core portion of the swing frame configured for supporting any one of the plurality of interchangeable power sources, with the one power source being partially accommodated within the hollowed out portion of the counterweight.

Machine configuration and control system enabling interchangeable power sources

To improve the precision of position of a fastener hole and a seating face for mounting a counterweight, a counterweight supporting member is comprised of a support plate erected and fixed at the rear end of a revolving frame and a supporting member attached to the support plate. A cylindrical bolt fastening boss is provided on the supporting member in a manner of rotational position adjustable to the supporting plate and in which a fastener hole is formed at an eccentric position.

Counterweight supporting structure for construction machine

The present invention aims to improve the strength of the portion of the swing frame for attaching the swing motor apparatus while reducing cost. A bottom plate of a swing frame is divided into a center bottom plate segment to which the swing motor apparatus mounting portion is attached, a front bottom plate segment that is positioned to the front side of the center bottom plate segment and to which the center joint mounting portion is attached, and a rear bottom plate segment positioned to the rear side of the center bottom plate segment, wherein: the center, front, and rear bottom plate segments and are formed integrally by welding; and the plate thickness of the center bottom plate segment is thicker than the plate thickness of the front bottom plate segment and the rear bottom plate segment.

Shovel-type construction machine

To improve the precision of position of a fastener hole and a seating face for mounting a counterweight, a counterweight supporting member is comprised of a support plate erected and fixed at the rear end of a revolving frame and a supporting member attached to the support plate. The supporting member is comprised of a base member that is locked and secured to a through hole opened on the support plate in a back and forth adjustable manner and has a counterweight fixing surface and a bolt fastening member in which a fastener hole for receiving a fastener bolt is formed.

A welded structure makes a relationship between one intermittent weld which fixes a long member to a base material and the other intermittent weld which fixes a plate-shaped member to the long member appropriately respond to a type of a load which dominantly acts on the long member. A lower long side edge of a beam member which serves as the long member is fixed onto a machine body frame which serves as the base material by intermittent welds. A top plate which serves as the plate-shaped member is fixed onto an upper long side edge of the beam member by the other intermittent welds. In a region where a load which twists the top plate dominantly acts on the beam member, a parallel weld portion in which the intermittent welds and the intermittent welds are welded in a parallel weld form is employed, and in a region where a bending load from the top plate dominantly acts on the beam member, the zigzag weld portion in which the intermittent weld and the intermittent weld are welded in a zigzag weld form is employed.

Welded structure and machinery

This invention relates to a cab support structure for construction machine. The cab support structure has a rear beam and a front beam, which support front and rear part of cab, and a center beam located and welded between inner and outer frames of the machine. A stopper located at the corner of center beam side of the junction of rear beam and outer frame is formed box shape. The stopper has an L-shaped plate welded to the rear beam and the outer frame, and a doubling L-shaped plate welded to the L-shaped plate, rear beam, and outer frame.

Growing community of inventors

Tokyo, Japan

Takeshi Tsuneyoshi