A rail clamp comprising two clamp elements (30a, 30b) securable together in clamping arrangement about a railway rail, wherein at least one of the clamp elements (30a, 30b) can include sensor retaining means to hold a sensor to make measurements relating to the rail. A first of said two clamp elements (30b) has a clamp head to engage a fish plate (14b) or a web-side of a railway rail. A clamp foot (34b) engages the underside of a railway rail foot (13). A second of said two clamp elements (30a) having a clamp head to engage the opposite fish plate or web-side of a railway rail and a clamp foot (34a) to engage the underside of the clamp foot (34b) of the first clamp element (34b). The first and second clamp elements (30a, 30b) are secured together by a connector (35), optionally a bolt, to a railway rail.

A rail clamp comprising two clamp elements (30a, 30b) securable together in clamping arrangement about a railway rail, wherein at least one of the clamp elements (30a, 30b) can include sensor retaining means to hold a sensor to make measurements relating to the rail. A first of said two clamp elements (30b) has a clamp head to engage a fish plate (14b) or a web-side of a railway rail. A clamp foot (34b) engages the underside of a railway rail foot (13). A second of said two clamp elements (30a) having a clamp head to engage the opposite fish plate or web-side of a railway rail and a clamp foot (34a) to engage the underside of the clamp foot (34b) of the first clamp element (34b). The first and second clamp elements (30a, 30b) are secured together by a connector (35), optionally a bolt, to a railway rail.

A rail temperature expansion joint and a laying and mounting method thereof relate to the technical field of track transit. The rail temperature expansion joint includes a sleeper, the upper surface of the sleeper is symmetrically mounted with two first rails and two second rails, and the first rail and the second rail on one side are arranged on the same straight line; a gap is arranged between end faces of the first rail and the second rail; the adjacent ends of the first rail and the second rail are fastened and positioned by a group of adjustment components, the adjustment components are fixedly mounted on the embedded part, and the embedded part is located at the outer side of the first rail and the second rail.

A rail temperature expansion joint and a laying and mounting method thereof relate to the technical field of track transit. The rail temperature expansion joint includes a sleeper, the upper surface of the sleeper is symmetrically mounted with two first rails and two second rails, and the first rail and the second rail on one side are arranged on the same straight line; a gap is arranged between end faces of the first rail and the second rail; the adjacent ends of the first rail and the second rail are fastened and positioned by a group of adjustment components, the adjustment components are fixedly mounted on the embedded part, and the embedded part is located at the outer side of the first rail and the second rail.

A rail clamp comprising two clamp elements (30a, 30b) securable together in clamping arrangement about a railway rail, wherein at least one of the clamp elements (30a, 30b) can include sensor retaining means to hold a sensor to make measurements relating to the rail. A first of said two clamp elements (30b) has a clamp head to engage a fish plate (14b) or a web-side of a railway rail. A clamp foot (34b) engages the underside of a railway rail foot (13). A second of said two clamp elements (30a) having a clamp head to engage the opposite fish plate or web-side of a railway rail and a clamp foot (34a) to engage the underside of the clamp foot (34b) of the first clamp element (34b). The first and second clamp elements (30a, 30b) are secured together by a connector (35), optionally a bolt, to a railway rail.