一种钢轨接头直线度在线测量装置

Abstract

提供一种钢轨接头直线度在线测量装置，具有直角结构的固定框架；固定框架上端面设有横向移动滑块和导轨；固定框架内侧底部固定安装纵向夹紧气缸，气缸的活塞杆末端固连气缸夹头；气缸夹头与固定框架内侧的纵向侧装板顶头对夹待测钢轨将固定框架与待测钢轨连为一体；固定框架顶端设有横向移动气缸，横向移动气缸拖拽激光测距器安装框架沿水平横向直线位移；激光测距器安装框架安装六个测量头；六个测量头用于检测待测钢轨接头的直线度。本实用新型可实现钢轨接头直线度的自动、高效、精确在线测量。

Claims

1. A device for on-line measurement of straightness of a rail joint, characterized in that: A fixed frame (1-1) has a right-angle structure consisting of a horizontal upper plate (1) and a vertical side plate (2); the upper surface of the fixed frame (1-1) is provided with a transverse sliding slider, which is transversely slidably adapted to connect a transverse sliding guide rail; a longitudinal clamping cylinder is fixedly installed on the bottom inner side of the upper plate (1) of the fixed frame (1-1), and the longitudinal clamping cylinder is perpendicular to the transverse horizontal center line in the horizontal plane; the piston rod end of the longitudinal clamping cylinder is fixedly connected to a cylinder chuck; a longitudinal side plate top (23) is vertically fixedly installed on the vertical inner side of the side plate (2) of the fixed frame; the longitudinal side plate top (23) and the aforementioned cylinder chuck clamp the rail to be tested, which is used to fix the fixed frame (1-1) and the rail to be tested together. The system is a single unit, with the rail to be tested positioned at the symmetrical center of a fixed frame (1-1). A transverse moving cylinder (10) is provided at the top horizontal center line of the fixed frame (1-1), and the piston rod of the transverse moving cylinder (10) is fixedly connected to the end of a laser rangefinder mounting frame (9). The laser rangefinder mounting frame (9) is also fixedly connected to the end of a transverse moving guide rail. The transverse moving guide rail and the transverse moving slider provide linear guidance for the displacement of the laser rangefinder mounting frame (9), and the transverse horizontal center line of the laser rangefinder mounting frame (9) is vertically coplanar with the transverse horizontal center line of the fixed frame (1-1). The laser rangefinder mounting frame (9) is equipped with six measuring heads. The six measuring heads are used to detect the straightness of the rail joint to be tested.

2. The rail joint straightness on-line measuring device according to claim 1, characterized in that: The upper mounting plate (1) and the side mounting plate (2) are fastened together as one unit using fasteners.

3. The rail joint straightness on-line measuring device of claim 1, wherein: The lateral moving guide rail is composed of a pair of lateral moving guide rails I (3) and lateral moving guide rail II (4) that are parallel and spaced laterally; the lateral moving slider is composed of four pairs of lateral moving sliders I (5), lateral moving slider II (6), lateral moving slider III (7) and lateral moving slider IV (8); wherein the lateral centers of lateral moving slider I (5) and lateral moving slider II (6) are collinear and slide with lateral moving guide rail II (4); the lateral centers of lateral moving slider III (7) and lateral moving slider IV (8) are collinear and slide with lateral moving guide rail I (3).

4. The rail joint straightness on-line measuring device of claim 1, wherein: The longitudinal clamping cylinder is composed of three parallel longitudinal clamping cylinders I (11), II (12), and III (13); the cylinder chuck is composed of cylinder chuck I (14), II (15), and III (16); the piston rod of the longitudinal clamping cylinder I (11) is fixed to cylinder chuck I (14) at its execution end; the piston rod of the longitudinal clamping cylinder II (12) is fixed to cylinder chuck II (15) at its execution end; the piston rod of the longitudinal clamping cylinder III (13) is fixed to cylinder chuck III (16) at its execution end; the cylinder chuck I (14), II (15), and III (16) operate simultaneously and clamp the rail to be tested against the top head (23) of the longitudinal side mounting plate, which is used to fix the fixed frame (1-1) to the rail to be tested.

5. The online rail joint straightness measuring device according to claim 1, characterized in that: The laser rangefinder mounting frame (9) is an integral axisymmetric structure located below the outer end of the transverse moving guide rail. The laser rangefinder mounting frame (9) consists of an integrally formed horizontal connecting part (901) and four vertical parts (902). The four vertical parts (902) are respectively vertically arranged at the bottom corners of the horizontal connecting part (901). The transverse horizontal center line of the horizontal connecting part (901) is vertically coplanar with the transverse horizontal center line of the transverse moving cylinder (10). With the transverse and vertical horizontal center lines in the horizontal plane as the axis of symmetry, the four vertical parts (902) are arranged symmetrically in pairs. The four vertical parts (902) are respectively fixedly mounted. The device is equipped with two symmetrically arranged inner measuring heads I (17), inner measuring head II (18), outer measuring head I (19), and outer measuring head II (20), and the four inner and outer measuring heads are arranged horizontally at the same height in the horizontal plane; the horizontal connecting part (901) is fixedly installed with top measuring head I (21) and top measuring head II (22) vertically downward in front of and behind the horizontal center line, and the top measuring head I (21) and top measuring head II (22) are arranged at the same height in the horizontal plane; the four symmetrically arranged inner and outer measuring heads are used to measure the straightness of the rail joint to be tested in the horizontal plane; the two top measuring heads are used to measure the straightness of the rail joint to be tested in the vertical plane.

6. The rail joint straightness on-line measuring device of claim 1, wherein: All measuring heads are laser rangefinders.

7. The rail joint straightness on-line measuring device of claim 5, wherein: The four inner and outer measuring heads consist of inner measuring head I (17) and inner measuring head II (18) located on one side of the rail to be measured, and outer measuring head I (19) and outer measuring head II (20) located on the other side of the rail to be measured. The laser center lines of inner measuring head I (17) and outer measuring head I (19) are collinear and located near the joint of the rail to be measured. The laser center lines of inner measuring head II (18) and outer measuring head II (20) are collinear and located far from the joint of the rail to be measured. The laser center lines of the four inner and outer measuring heads are perpendicular to the transverse horizontal center line of the laser rangefinder mounting frame (9). The top measuring head I (21) is located near the joint of the rail to be measured, and the top measuring head II (22) is located far from the joint of the rail to be measured. The laser center lines of the top measuring head I (21) and the top measuring head II (22) are both perpendicular to the transverse horizontal center line of the laser rangefinder mounting frame (9).

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