Device for measuring offset of cantilever of overhead contact system of electrified railway

Abstract

A device for measuring the offset of a cantilever of an overhead contact system of an electrified railway. The device comprises a device base (1), wherein a lower portion of the device base (1) can be snap-fitted onto steel rails, and sliding grooves (9) are provided in an upper portion of the device base (1); a sliding block (3), which is in sliding fit with the sliding grooves (9); a laser module (6), which is fixed to an upper surface of the sliding block (3) and can emit a cross laser upwards; a measuring steel ruler (5), which is embedded in a bottom surface of a recess; leveling jackscrews (2), which vertically penetrate four corners of the bottom surface of the recess; and bubble tubes, which comprise vertical-line leveling bubble tubes (4) fixed to the device base (1) and an along-line leveling bubble tube (7) fixed to the upper surface of the sliding block (3). The device improves the cantilever offset measurement accuracy, features a simple and easy-to-operate measurement method, can adapt to a straight section and a curved section, improves the construction review efficiency, has a simple structure, and is economical and practical.

Description

A device for measuring the offset of the catenary arm of an electrified railway Technical Field

[0001] The present application belongs to the technical field of railway-related measuring instruments, and specifically relates to a device for measuring the offset of an electrified railway contact network arm. Background Art

[0002] The catenary is a special form of power supply line erected in the open air above the railway. The catenary is suspended and positioned by arms and positioning devices. Electric locomotives and EMUs obtain electricity through sliding contact between pantographs and the catenary.

[0003] During the installation and adjustment of the catenary arm, the offset of the arm along the line must be adjusted according to the temperature compensation offset curve given in the design. Especially in the joint section, whether the arm offset setting is accurate and reasonable will directly affect the safe operation of the catenary. In the past, people manually climbed up the pillars and arms, lowered the plumb line from the air to the center of the line, and then used a tape measure to measure along the rails. This method resulted in large measurement errors and low efficiency. In recent years, point laser measuring devices have emerged, but the laser emitter must be manually rotated during measurement and does not have a leveling function. In addition, point laser measurement is not easy to observe, has large measurement errors, and does not have a horizontal verification function for the arm. In curved sections, the rails are not horizontal, which will affect the measurement accuracy. Therefore, it is necessary to develop a more comprehensive, more convenient and accurate measuring device.

[0004] Therefore, it is necessary to provide an improved technical solution to the above-mentioned deficiencies in the prior art. Summary of the Invention

[0005] The purpose of this application is to provide an electrified railway contact network arm offset measuring device to solve or alleviate the problems existing in the above-mentioned prior art.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] An electrified railway contact network arm offset measuring device, comprising:

[0008] The device base has a lower portion that can be clamped on the rail, and an upper portion of the device base is provided with a groove, and an inner wall of the groove is provided with a sliding groove extending longitudinally thereof;

[0009] a slider, the slider being in sliding engagement with the slide groove;

[0010] A laser module is fixed on the upper surface of the slider and can emit a cross laser upward;

[0011] A measuring steel ruler, the measuring steel ruler is embedded in the bottom surface of the groove and is provided with a scale;

[0012] A leveling screw, the leveling screw vertically passing through the four corners of the bottom surface of the groove; the leveling screw is threadedly connected to the base of the device;

[0013] Bubble tubes, comprising a vertical line leveling bubble tube fixed on the device base and a line leveling bubble tube fixed on the upper surface of the slider;

[0014] A movable initial mark block is also provided on the bottom surface of the groove, the initial mark block has a mark pointing to the scale, and the upper surface of the initial mark block is lower than the bottom surface of the slider;

[0015] There are no numbers on the measuring ruler, so that the scale can be read from any starting point;

[0016] The number of the vertical line leveling bubble tubes is two, and the vertical line leveling bubble tubes are fixed at both ends of the chute. Beneficial effects:

[0017] This application can level the base of the device through the leveling screws and tracheal bubbles, ensuring the working angle of the laser level module and improving the measurement accuracy; the laser module emits a cross laser, in addition to measuring the arm base, it can also measure the position of the arm support device; the laser module can be adjusted manually, and then the offset of the arm can be easily obtained according to the scale difference of the measuring steel ruler. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of the three-dimensional structure of an embodiment of the present application.

[0019] FIG2 is a schematic diagram of the three-dimensional structure of the embodiment of the present application from another perspective.

[0020] FIG3 is a schematic diagram of a top view of the structure of an embodiment of the present application.

[0021] FIG4 is a schematic diagram of the front structure of an embodiment of the present application.

[0022] FIG5 is a schematic diagram of the structure of the usage state of an embodiment of the present application.

[0023] In the figure: 1-device base, 2-leveling screw, 3-slider, 4-vertical line leveling bubble tube, 5-measuring steel ruler, 6-laser module, 7-line leveling bubble tube, 8-initial mark block, 9-slide groove. DETAILED DESCRIPTION

[0024] As shown in Figures 1 to 5, an electrified railway catenary arm offset measuring device includes: a device base 1, a slider 3, a laser module 6, a measuring steel ruler 5, a leveling screw 2 and a bubble tube;

[0025] The lower part of the device base 1 can be clamped on the rail, and the upper part of the device base 1 is provided with a groove, and the inner wall of the groove is provided with a slide groove 9 extending longitudinally thereof; the slider 3 slides in cooperation with the slide groove 9; the laser module 6 is fixed on the upper surface of the slider 3, and the laser module 6 can emit a cross laser upward; the measuring steel ruler 5 is embedded in the bottom surface of the groove, and the steel ruler is provided with a scale; the leveling screw 2 vertically passes through the four corners of the bottom surface of the groove; the leveling screw 2 is threadedly connected to the device base 1; the bubble tube includes a vertical line leveling bubble tube 4 fixed on the device base 1 and a line leveling bubble tube 7 fixed on the upper surface of the slider 3;

[0026] The device base 1 is approximately H-shaped as a whole and is made of ABS engineering plastics, aluminum alloy, steel and other materials; a slot for clamping the rail is provided at the lower part of the device base 1. The width of the slot should be greater than the width of the rail head so that the device base 1 can "ride" on the rail. Specifically, the width of the slot is approximately 1.1 times the width of the rail head. For example, the width of the rail head is 73mm, and the inner edge width of the slot is 80mm. In this way, when the device base 1 is clamped on the rail, both sides of the rail head will not contact the inner wall of the slot at the same time, so that the device can be used on the curved section of the rail.

[0027] There are no numbers on the measuring ruler 5, so the scale can be read from any starting point; for example, blocks of color of the same length but different colors or evenly set long and short lines can be used to represent a specified distance, and the scale can be designed to be accurate to 1mm to 2mm; this eliminates the need to distinguish between the left and right or starting ends of the measuring ruler 5, making it easier to use and read.

[0028] The slide grooves 9 are opened on the inner side walls on both sides of the groove, and the slide grooves 9 pass through the grooves in the longitudinal direction. Support bars matching the slide grooves 9 are fixed on both sides of the corresponding slider 3; since the groove is longitudinally through, the slider 3 can be easily assembled to the device base 1.

[0029] There are two vertical line leveling bubble tubes 4, which are fixed to both ends of the chute 9 by gluing or bolts. The length direction of the vertical line leveling bubble tubes 4 is perpendicular to the length direction of the chute 9, thereby achieving the goal of using the vertical line leveling bubble tubes 4 to block both ends of the chute 9 to prevent the slider 3 from falling off; the vertical line leveling bubble tube 4 includes a mounting base and a strip level bubble installed in the mounting base; the line leveling bubble tube 7 has the same structure as the vertical line leveling bubble tube 4.

[0030] The bubble tube is provided with a scale line for indicating the N° inclination, and the laser module 6 automatically compensates for small angular errors within the range of N°, N≤4; if such a laser module 6 that automatically compensates for vertical adjustment within the range of 4° is adopted, the requirement for leveling the device base 1 can be reduced, and the device base 1 does not need to be strictly leveled, it only needs to be adjusted to an inclination within 4°, and then the laser module 6 automatically levels; thereby reducing the layout time of the measuring device, achieving rapid layout, avoiding manual adjustment of the laser module 6, facilitating aiming the arm and the load-bearing cable seat, and facilitating verification of the level of the arm base; the laser module 6 that automatically compensates for vertical adjustment within the range of 4° is an existing technology, such as a commercially available 12-line mini level (Boca 12-line mini level or Lacey 12-line mini level available on Taobao).

[0031] A movable initial block 8 is also provided on the bottom surface of the groove. The initial block 8 has a mark pointing to the scale. The upper surface of the initial block 8 is lower than the bottom surface of the slider 3 to ensure that the slider 3 does not touch the initial block 8 when sliding in the slide groove 9 and the groove; a shallow groove can be opened on the bottom surface of the groove, and then the measuring steel ruler 5 is pasted on one side of the shallow groove, leaving the space on the other side of the shallow groove as the movable space of the initial block 8; the initial block 8 is used to mark the position of the laser module 6 and the slider 3 at this time when the vertical light of the cross laser is aligned with the center of the arm base. After the laser module 6 is subsequently adjusted, the offset of the arm support device can be obtained according to the scale degree between the adjusted position and the initial block 8; the initial block 8 can be made of soft magnets or hard magnets and can be used repeatedly. The bottom or side of the corresponding shallow groove can be attracted by a magnet, such as an iron magnetic sheet is pasted on one side of the shallow groove; the initial block 8 can also be an arrow-shaped adhesive sticker with adhesive backing, which is used similarly to a sticky note and is replaced after the adhesive backing is no longer adhesive after several uses.

[0032] The side of the initial mark block 8 away from the measuring steel ruler 5 slides along the inner wall of the groove, that is, the initial mark block 8 slides along the inner wall of the groove. When adjusting, the operator can directly press the initial mark block 8 with his hand to slide it.

[0033] The mark is prominently displayed and has a pointed end for easy reading by personnel; the mark is in the shape of a pointer, an arrow or a triangle; the mark is a flat mark, a recessed mark or a protruding mark; the surface of the initial mark block 8 is solid; the marks in Figures 1 to 3 are triangles protruding from the side.

[0034] The initial mark block 8 includes long strips relatively arranged on both sides of the mark. The long strips increase the overall surface area of ​​the initial mark block 8, making it easier for people to operate the initial mark block 8 with their fingers. Several protrusions or pits are arranged on the upper surface of the long strips to increase the surface friction of the long strips and reduce slipping.

[0035] FIG5 is a reference diagram of the use state of the device. The dotted line in the figure represents the partial irradiation range of the horizontal light of the cross laser on the arm and the arm support device. The longitudinal light of the cross laser is roughly along the direction of the rail. The vertical light of the cross laser is the laser beam emitted from the laser module 6. The intersection of the horizontal light and the longitudinal light is the vertical light. When measuring the offset of the arm, the device is placed on the rail, the top screw is adjusted to level the device, the laser module 6 is turned on, the position of the laser module 6 is adjusted and the cross laser is emitted so that the horizontal light is aligned with the arm base (the dotted line on the far left of FIG5 points to the arm base). The level of the arm base is checked based on the emitted horizontal light. If the arm is level, the horizontal light is always aligned with the center line of the arm base.

[0036] Align the vertical light with the center of the wrist positioning tube (the middle dotted line in Figure 5 can be regarded as a schematic diagram of the position of the vertical light), and check whether the center line of the wrist support device (which can be understood as a telephone pole) is in the horizontal light plane emitted by the laser module 6: if the center line of the wrist support device and the vertical and horizontal lights of the cross laser are in the same plane, the wrist has not been offset; if the center line of the wrist support device and the horizontal light are not in the same plane, first adjust the initial block 8 to the position of the slider 3, and then manually slide the slider 3 to drive the laser module 6 so that the horizontal light of the cross laser is in the same plane as the center line of the wrist support device, and then read the distance from the slider 3 to the initial block 8, which is the movement of the slider 3, that is, the offset of the wrist support device. After determining the offset, adjust the wrist; the slider 3 in Figure 3 can be regarded as the initial position, and the initial block 8 can be moved to the position aligned with the edge line of the slider 3, and then move the slider 3 to the position in Figure 1 or Figure 2. The distance between the edge line of the slider 3 and the mark of the initial block 8 is the offset of the wrist.

[0037] This application improves the measurement accuracy of the arm offset, has a simple measurement method and is easy to operate, can adapt to straight and curved segments, improves construction review efficiency, has a simple structure, and is economical and practical.

Claims

1. An electrified railway contact network arm offset measuring device, characterized in that: include: The device base has a lower portion that can be clamped on the rail, and an upper portion of the device base is provided with a groove, and an inner wall of the groove is provided with a sliding groove extending longitudinally thereof; a slider, the slider being in sliding engagement with the slide groove; A laser module is fixed on the upper surface of the slider and can emit a cross laser upward; A measuring steel ruler, the measuring steel ruler is embedded in the bottom surface of the groove and is provided with a scale; A leveling screw, the leveling screw vertically passing through the four corners of the bottom surface of the groove; the leveling screw is threadedly connected to the base of the device; Bubble tubes, comprising a vertical line leveling bubble tube fixed on the device base and a line leveling bubble tube fixed on the upper surface of the slider; A movable initial mark block is also provided on the bottom surface of the groove, the initial mark block has a mark pointing to the scale, and the upper surface of the initial mark block is lower than the bottom surface of the slider; There are no numbers on the measuring ruler, so that the scale can be read from any starting point; The number of the vertical line leveling bubble tubes is two, and the vertical line leveling bubble tubes are fixed at both ends of the chute.

2. The electrified railway overhead contact network arm offset measuring device according to claim 1, characterized in that: The side of the initial mark block away from the measuring steel ruler slides along the inner side wall of the groove.

3. The electrified railway overhead contact network arm deflection measuring device according to claim 1, characterized in that: The mark is in the shape of a pointer, an arrow or a triangle; the mark is a flat mark, a recessed mark or a protruding mark; and the surface of the initial mark block is solid.

4. The electrified railway overhead contact network arm deflection measuring device according to claim 3, characterized in that: The initial mark block includes long strips arranged on both sides of the mark.

5. The electrified railway overhead contact network arm deflection measuring device according to claim 4, characterized in that: A plurality of protrusions or recesses are provided on the upper surface of the strip portion.

6. The electrified railway overhead contact network arm deflection measuring device according to claim 1, characterized in that: The sliding groove is arranged on the inner side walls of both sides of the groove, and the sliding groove passes through the groove in the longitudinal direction.

7. The electrified railway overhead contact network arm deflection measuring device according to claim 1, characterized in that: The bubble tube is provided with a scale line for indicating N° inclination, and the laser module automatically compensates for small angle errors within the range of N°, where N≤4.

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