Heavy-duty material processors (e.g., shears, concrete crushers) include a jaw that pivotally connects to another jaw. A hydraulic cylinder extends between the jaws to open and close the jaws in a shearing motion. Cutting/shearing/crushing blade inserts mount to detachable blade holders, which in turn mount to one of the jaws. Wedge blocks securely and detachably attach the blade inserts to the remainder of their associated jaw, and rely on force-amplifying wedge surfaces to ensure a secure attachment. The detachable blade holders may include lateral flanges that extend across an otherwise exposed face of their respective underlying jaw bodies to protect the jaw bodies during use. A blade on one of the jaws is laterally adjustable, which helps to free a jam if one of the jaws gets jammed into the space between blades in the other jaw.

To provide a method of toppling a tower structure more safely, simply and quickly than in the conventional manner. In a method of toppling a tower structure that is fixedly supported on a base 20 to demolish the tower structure 10, the method includes a base dividing step of dividing the base 20 into an upper base 22 and a lower base 26, by cutting the base 20 in a substantially horizontal direction, an upper base dividing step of dividing the upper base 22 into a support base portion 23 and a separated base portion 24 by cutting the upper base 22, in a longitudinal direction, from above to a substantially horizontal surface 20a, a removing step of removing the separated base portion 24, and a toppling step of toppling the tower structure 10 together with the support base portion 23 using, as a tumble axis 23a, a lower edge of a longitudinally cut surface 22a of the support base portion 23, in which the tumble axis 23a is located on a toppling direction side of the tower structure with respect to a center of gravity C. Thus, since the tumble axis 23a of the robust base serves as a tumble fulcrum by itself, there is no possibility that breakage of the base is caused even by the concentration of a buckling load, and the tower structure can be toppled in an intended direction.

The present disclosure relates to a vehicular work machine (10) that is adapted for handling at least two different interchangeable tools (4). The machine (10) also comprises a user control device (11) and a water supply arrangement (31) that is adapted to distribute water for retaining dust that is created when a tool (4) is used, The water supply arrangement (31) comprises a controllable valve (24) that is arranged to control the flow of the water that is distributed via at least one nozzle (29). The user control device (11) is arranged for selection of a desired tool, where at least one selectable tool is associated with a certain predefined water setting. Each water setting relates to a certain relative flow of distributed water during a certain time that is related to the time said tool (4) is chosen and performing a certain work procedure, and/or to the time said tool (4) is chosen and ready to perform a certain work procedure.

The application relates to a double acting demolition device according to one embodiment for demolishing structures. The device includes a first crushing jaw for crushing operation, a first cutting jaw for cutting operation, and a combination jaw. The first jaws are separate jaws. The combination jaw is attachable to the first cutting jaw for constructing a second crushing jaw and to the first crushing jaw for constructing a second cutting jaw. The second crushing jaw is used jointly with the first crushing jaw in crushing operation and the second cutting jaw is used jointly with the first cutting jaw in cutting operation. In crushing operation, the first crushing jaw rotates around a fulcrum other than that of the second cutting jaw in cutting operation.

A cylinder acceleration mechanism includes a buffer tank that supplies and discharges oil to and from a bottom-side line that is connected to a bottom-side chamber of an actuating cylinder, and an inversion lever having an intermediate fulcrum as a rotation axis. The buffer tank includes a buffer chamber with a variable capacity achieved by a seal lid moving back and forth inside of a case, and extends and reduces a length of a coupling rod provided to the seal lid and projects from the case. A bottom-side branching line branched from the bottom-side line is connected to the buffer chamber. The actuating rod of the actuating cylinder and the coupling rod of the buffer tank are coupled to respective ends of the inversion lever. The actuating rod and the coupling rod extend and retract alternately with respect to each other as the inversion lever turns.

Based on operation trajectory data an operation analysis device identifies all open points indicating positions at which the crusher is opened during the operation period and all close points indicating positions at which a crusher is closed during an operation period, calculates, as a shortest distance, a distance between each open point of the all open points and a close point nearest to the each open point, and identifies, as a sorting destination open point, an open point at which the shortest distance exceeds a first threshold value, identifies data until the crusher grasping the dismantling part moves to the sorting destination and returns to the dismantling target again from among the operation trajectory data as movement data of the crusher having moved in the dismantling operation, and identifies data in which the movement data has been removed from the operation trajectory data as grasping operation data.

A tile removal assembly includes a tool that has a handle and a head attached to the handle. The head has a claw portion extending laterally away from the handle and a chisel portion extending laterally away from the handle in an opposite direction from the claw portion. The claw portion has a thickness that is sufficiently thin to facilitate the claw portion to flex when the head is swung toward a tile is bonded to a hard floor surface. In this way the claw portion can travel between the tile and the hard floor surface to facilitate a user to drive the claw portion beneath the tile without requiring the user to swing the tool with a high degree of accuracy. The chisel portion has a thickness that is sufficiently thick to inhibit the chisel portion from flexing thereby facilitating the chisel portion to pry a fixed object.

The application relates to a demolition device for demolishing a concrete structure according to one embodiment. The device has a crushing blade for crushing concrete, and a cutting blade for cutting metal or a pulverizing blade for grinding concrete, and a combination blade. The device can be attached to a utility machine in a detachable manner. The crushing and cutting/pulverizing blade are separate blades from each other. The combination blade is adapted to be used for crushing concrete with the crushing blade. The combination blade is adapted to be used for cutting metal with the cutting blade or for grinding concrete with the pulverizing blade. The combination blade has abutment surface parts for the crushing and cutting/pulverizing blade. The abutment surface part for the cutting/pulverizing blade makes possible a power transmission between the cutting/pulverizing and combination blade when using the combination blade for crushing concrete. The abutment surface part for the crushing blade makes possible a power transmission between the crushing and combination blade when using the combination blade for cutting metal or grinding concrete.

A hydraulic cylinder cover is disclosed. The hydraulic cylinder cover may have a body having a first end and a second end. The hydraulic cylinder cover may also have a flange positioned at the first end. In addition, the hydraulic cylinder cover may have a cover eye provided on the flange. The cover eye may be configured to connect to a piston rod eye of a hydraulic cylinder.

A demolition shear and a piercing tip insert and nose configuration for a demolition shear which resists nose wear and resists retract forces exerted on the piercing tip insert in jamming situations and in the event of snagging of the piercing tip insert. The piercing tip insert includes first and second piercing tip halves, each half having an outer planar sidewall, a curved front wall extending laterally inward, and a bottom leg extending laterally inward defining a shearing edge and a piercing edge.