The present invention relates to a quick clamping device. A pressing flange and a top plate are respectively installed on both sides of a bracket; one end of a top rod is rotatably connected with the top plate, and the other end is in threaded connection with a center pressing element; a slip ring copper sleeve is sleeved on the center pressing element; a synchronous slip ring can be sleeved outside the slip ring copper sleeve relatively movably; the outer end part of the slip ring copper sleeve is provided with a copper sleeve flange; a spring sleeved on the slip ring copper sleeve is arranged between the synchronous slip ring and the copper sleeve flange; both ends of the spring are respectively abutted against the synchronous slip ring and the copper sleeve flange; a plurality of pull rods are evenly distributed along the circumferential direction of a clamped element; one end of each of the pull rods is respectively hinged to the center pressing element, and the other end is a pressing end; the clamped element is positioned between the pressing flange and the pressing end of each pull rod; a connecting rod is connected between each of the pull rods and the synchronous slip ring; and both ends of the connecting rod are respectively hinged with the pull rods and the synchronous slip ring. The present invention has the advantages of novel structure, simple operation, small size, and the like.

Clamp designs and methods relating thereto for working on one or more of workpieces are described. An exemplar clamp design includes a unitary u-shaped frame having a bight portion flanked by multiple jaw portions, all of which are designed to secure one or more workpieces (e.g., cabinet face frame). The u-shaped frame, at any of its portions, has disposed thereon at least one work window that provides access to one or more secured workpieces. Further, one exemplar clamp design provides a work guide element rotatably coupled to the u-shaped frame, disposed adjacent to the work window, and having defined therein a guide aperture. In, one rotated, work position of the work guide, the guide aperture allows a tool to access and/or work, through the guide aperture and the work window, on a desired location on the workpiece.

A jaw crusher assembly comprises a jaw crusher a jaw liner clamping tool for clamping a jaw liner to a jaw of the jaw crusher. The clamping tool comprises a clamping head pivotably coupled to a shaft, and a releasable fastening mechanism. The shaft passes through the jaw and its free end is fastened to the jaw by the fastening mechanism, which is tightened to cause the clamping head to exert a clamping force to hold the jaw liner in place. The clamping tool facilitates safe installation of the jaw liners.

A clamping device for fastening an injection mold to a tool plate comprises an upper part and a lower part, said lower part having a mounting surface arranged flat against the tool plate. First, second, third and fourth side surfaces upstand from said mounting surface, said upper part having first, second, third and fourth side surfaces. Said upper and lower parts are connected by a first bolt having an axis of symmetry defining an axis. A resilient member is arranged in connection with the first bolt between the upper and lower parts concentrically with the bolt's axis. The first bolt has a non-threaded section such that the lower part or upper part may move along the bolt in the direction of the axis.

A clamp to retain a block of material on a machining table including a body having a first face, a first front face oriented toward the machining table and the block of material when in use, a nose projecting relative to the first front face having a second front face parallel to the first front face, first and second edges connecting the first and second front faces, and at least one internally threaded hole opening at least partly at the level of the second front face with an axis forming a non-zero angle with the first face and the second front face, at least one grub screw screwed into the internally threaded hole having a pointed free end configured to penetrate into the block of material when in use when screwing in the grub screw, and a connecting system to demountably connect the clamp to the machining table.

Disclosed herein is a clamping apparatus that is designed to be modular to facilitate use in numerous applications. In particular the modularity is fast and easy to manually perform without the need of tools. This modularity is facilitated by elongated elements which are configured to resist undesired removal, but facilitate desired removal. The modularity of the clamping apparatus is facilitated with the use of many interchangeable shoes and a variety of structural jaws. The clamping apparatus may be operated with the option of using a power tool, hand tool, or handle elongated element and may be configured to facilitate single hand operation.

Disclosed herein is a clamping apparatus that is designed to be modular to facilitate use in numerous applications. In particular the modularity is fast and easy to manually perform without the need of tools. This modularity is facilitated by elongated elements which are configured to resist undesired removal, but facilitate desired removal. The modularity of the clamping apparatus is facilitated with the use of many interchangeable shoes and a variety of structural jaws. The clamping apparatus may be operated with the option of using a power tool, hand tool, or handle elongated element and may be configured to facilitate single hand operation.

A system and method for a clamp designed for those with weak hands or damaged grip this clamp fixes material in place without having to hold with any pinching forces with a top clamp, a bottom clamp, a bearing positioned in a bearing holder, a lock ring, and an anchoring plate positioned below the bearing holder that allows the clamp to be mounted to a bench or other surface.

The Trapdoor Clamp is the only product of its kind that allows individuals to safely place tools onto a highly adjustable platform to improve functionality of modern aerial lifts. The Trapdoor Clamp is uniquely designed with durable materials like rubber and metal to withstand force and ensure sustainability during operation. The clamp includes a channel having three sides defining open ends thereto, a trapdoor configured to create an open ended box with the three sided channel, a hinge configured to lengthwise join the trapdoor with the three sided channel, a trapdoor extension from the trapdoor, a stationary extension from the three sided channel configured to be in an opposing relation with the stationary extension and a fastener configured to put the trapdoor extension and the stationary extension in a compression.

A pipe jack includes an outer “C”-shaped frame that is provided with two (2) inwardly-shaped tabs on each end. The tabs engage a lower surface of a head on a conventional pipe jack stand. An interior cradle is driven downward onto a surface of a pipe via a rod connected by a swivel joint. The rod passes through a nut on top of the frame and terminates with a crank handle on top.