摘要:
A method of forming at least one crack (11) in a concrete article such as a concrete slab (10) having at least one crack promoting groove (28) formed in the surface (25) thereof and/or at least one crack promoting insert (12) cast within the concrete slab (10) and substantially aligned with the groove (28) where used, the method comprising the steps of positioning a tool (24) having a force applying member (26) on or above the surface (25) of the concrete slab (10) such that the member (26) is positioned adjacent to or above a groove (28) and/or insert (12) and causing the tool (24) to apply through the member (26) a force to the concrete slab (10) to promote the formation of a crack or cracks (11) in the slab (10) along a groove (28) and/or insert (12). Apparatus for forming a crack in a concrete article is also disclosed.
摘要:
The magnet cutting device includes a pair of supporting portions spaced apart by a predetermined distance, the pair of supporting portions being configured to support the magnet from bottom side of the magnet, a blade configured to press the magnet supported by the pair of supporting portions from a upper side of the magnet, and a magnet supporting tool arranged between the pair of supporting portions to support the magnet from the bottom side of the magnet, the magnet supporting tool being configured to be vertically movable. A surface of the magnet supporting tool to be held in contact with the magnet is shaped such that a central part of an upper end of the magnet supporting tool is higher than the upper ends of the pair of supporting portions and an end part of the upper end of the magnet supporting tool is lower than the upper ends of the pair of supporting portions in a state where the magnet is placed on the surface, the upper end of the magnet supporting tool having a slope connecting the central part and the end part.
摘要:
A method of forming at least one crack (11) in a concrete article such as a concrete slab (10) having at least one crack promoting groove (28) formed in the surface (25) thereof and/or at least one crack promoting insert (12) cast within the concrete slab (10) and substantially aligned with the groove (28) where used, the method comprising the steps of positioning a tool (24) having a force applying member (26) on or above the surface (25) of the concrete slab (10) such that the member (26) is positioned adjacent to or above a groove (28) and/or insert (12) and causing the tool (24) to apply through the member (26) a force to the concrete slab (10) to promote the formation of a crack or cracks (11) in the slab (10) along a groove (28) and/or insert (12). Apparatus for forming a crack in a concrete article is also disclosed.
摘要:
The present invention provides an apparatus and a method for aging a stone, preferably an artificial stone. The aging device comprises a rotary support operatively connected to a rotary shaft, at least one abrasive tool mounted to the rotary support for roughing and/or polishing a surface of the artificial stone when the rotary support is brought into functional contact with said surface, and biasing means that biasingly connect the abrasive tool to the rotary support. The biasing means urge the abrasive tool away from the rotary support while allowing the same to move toward the rotary support when the rotary support is brought into functional contact with the surface of the artificial stone, thereby allowing the abrasive tool to follow a surface profile of the artificial stone while roughing and/or polishing its surface.
摘要:
The invention relates to a tool for a breaking hammer, a breaking hammer, and the use of a breaking hammer. The breaking hammer comprises a percussion device (5), the percussion piston (9) of which provides impacts to the tool (6) for breaking rock. An impact surface (13) of the tool comprises a curved form surface (23) that has a radius of curvature (R) and a centre axis (K) on the longitudinal axis (18) of the tool. The direction of the centre axis is transverse to the plane through the longitudinal axis (C) of the boom (3) of the work machine (2).
摘要:
The present invention provides an apparatus and a method for aging a stone, preferably an artificial stone. The aging device comprises a rotary support (2) operatively connected to a rotary shaft, at least one abrasive tool (6) mounted to the rotary support (2) for roughing and/or polishing a surface of the artificial stone when the rotary support (2) is brought into functional contact with said surface, and biasing means (8) that biasingly connect the abrasive tool (6) to the rotary support (2). The biasing means (8) urge the abrasive tool (6) away from the rotary support (2) while allowing the same to move toward the rotary support (2) when the rotary support (2) is brought into functional contact with the surface of the artificial stone, thereby allowing the abrasive tool (6) to follow a surface profile of the artificial stone while roughing and/or polishing its surface.
摘要:
The present invention provides an apparatus and a method for aging a stone, preferably an artificial stone. The aging device comprises a rotary support operatively connected to a rotary shaft, at least one abrasive tool mounted to the rotary support for roughing and/or polishing a surface of the artificial stone when the rotary support is brought into functional contact with said surface, and biasing means that biasingly connect the abrasive tool to the rotary support. The biasing means urge the abrasive tool away from the rotary support while allowing the same to move toward the rotary support when the rotary support is brought into functional contact with the surface of the artificial stone, thereby allowing the abrasive tool to follow a surface profile of the artificial stone while roughing and/or polishing its surface.