A latching system associated with a dipper door of a dipper includes a latch bar that engages with a body of the dipper. The latch bar defines a longitudinal axis. The latch bar includes a housing, one or more shims, and a wear member removably coupled to the housing. The wear member defines a wear surface and a wear axis extending parallel to the wear surface. An angle defined between the wear axis and the longitudinal axis is less than 45 degrees. The latching system also includes an arm member pivotally coupled to the dipper door such that the arm member is pivotable along a first pivot plane. The arm member contacts a portion of the latch bar for moving the latch bar along the longitudinal axis. The latching system includes a guide assembly having a guide pulley and an actuation member that causes pivoting of the arm member.

A latching system associated with a dipper door of a dipper includes a latch bar that engages with a body of the dipper. The latch bar defines a longitudinal axis. The latch bar includes a housing, one or more shims, and a wear member removably coupled to the housing. The wear member defines a wear surface and a wear axis extending parallel to the wear surface. An angle defined between the wear axis and the longitudinal axis is less than 45 degrees. The latching system also includes an arm member pivotally coupled to the dipper door such that the arm member is pivotable along a first pivot plane. The arm member contacts a portion of the latch bar for moving the latch bar along the longitudinal axis. The latching system includes a guide assembly having a guide pulley and an actuation member that causes pivoting of the arm member.

A mining machine having a control system for operating the mining machine. The control system includes a vibration monitor. The mining machine further includes a sensor and a vibration control system. The sensor senses vibration of a component of the mining machine. The vibration control system determines when the mining machine is moving in a proper cycle, triggers acquisition of vibration sensor data from the sensor in response to determining that the mining machine is moving in the proper cycle, and outputs the vibration sensor data.

A foundation construction device includes a fixed guiding device and a combined device. The fixed guiding device includes a fixed rack and a guiding device. The combined device includes a chain cutter power transmission device, a spoil treatment device, and a rack.

A construction machine that includes a machine frame and an articulated boom. The articulated boom is pivotably mounted to the machine frame. The construction machine is configured to be operated in a loader mode in which a first tool is mounted to the articulated boom, and in an excavator mode in which a second tool is mounted to the articulated boom. The construction machine further includes a tool storage for storing the first tool and/or the second tool. The construction machine is configured to replace one of the first tool and second tool when mounted to the articulated boom with the other one of the first tool and second tool when stored in the tool storage.

A foundation construction device for use in a construction device of a foundation (4) provided with a chain cutters (3) at the bottom during construction, comprising a fixed guiding device (1) and a composite device (2). The fixed guiding device (1) is composed of a fixed rack (1-1) and a guiding device (1-2). The composite device (2) comprises a chain cutter power transmission device (2-1), a spoil treatment device (2-2), and a rack (2-3). Also disclosed is a construction method for the foundation construction device.

A chain cutter for excavating rock and/or soil has one or more chains and cutters fixed on the chains, such that the central line of the one or more chains can form a spatial curve. Adjacent returning cutters on the chain cutter non-excavating face are staggered in the lengthwise direction of the chains, and are in a mutually embedded arrangement in the widthwise direction, or adjacent returning cutters on the chain cutter non-excavating face are in a stacked arrangement in the lengthwise direction of the chains, i.e. the widths of the chain cutter excavating faces are greater than the widths of the non-excavating faces, such that a machine frame in an annular enclosed region of the chain cutter and a machine frame outside the enclosed region are connected together as one within the width range of the excavating faces.

A construction machine that includes a machine frame and an articulated boom. The articulated boom is pivotably mounted to the machine frame. The construction machine is configured to be operated in a loader mode in which a first tool is mounted to the articulated boom, and in an excavator mode in which a second tool is mounted to the articulated boom. The construction machine further includes a tool storage for storing the first tool and/or the second tool. The construction machine is configured to replace one of the first tool and second tool when mounted to the articulated boom with the other one of the first tool and second tool when stored in the tool storage.

A boom assembly for a trencher having a boom frame member, a boom drive assembly and a plurality of boom arm assemblies. The boom frame member configured to be attachable to the trencher. The boom drive assembly attached to the boom frame member, having an output shaft that is rotatably actuatable. The plurality of boom arm assemblies extending from the boom frame member, the plurality of boom arm assemblies including at least a first boom arm assembly and a second boom arm assembly. The first and second boom arm assemblies can be of differing length, width, angle and may operate at different speeds.

A boom assembly for a trencher having a boom frame member, a boom drive assembly and a plurality of boom arm assemblies. The boom frame member configured to be attachable to the trencher. The boom drive assembly attached to the boom frame member, having an output shaft that is rotatably actuatable. The plurality of boom arm assemblies extending from the boom frame member, the plurality of boom arm assemblies including at least a first boom arm assembly and a second boom arm assembly. The first and second boom arm assemblies can be of differing length, width, angle and may operate at different speeds.