Subway train benchmarking error measuring scale

Abstract

The utility model discloses a subway train benchmarking error measuring scale which comprises a benchmarking arm and a measuring arm. And the benchmarking arm comprises an indicator. The measuring arm comprises scale marks, a guide groove, a plug and a vernier. And the plug is fixedly connected with the guide groove. The vernier comprises a pointer, a positioning plate and a sliding block. And the point of the pointer is positioned on the center line of the positioning plate. And the sliding block can slide in the guide groove. According to the actual site conditions of the train running direction, the platform direction, the mark punching condition and the mark lacking condition, an operator can select one of the A face and the B face to measure, and the center line of the shielding door can be positioned by aligning the indicator of the mark aligning arm with the platform ground marker. By sliding the vernier, the positioning plate of the vernier can slide into the central groove of the doorsill of the train door, so that the center line of the train door can be quickly positioned, the pointer of the vernier is matched with the scale marks for reading, accurate train benchmarking errors can be obtained, and accurate data support is provided for calibration and maintenance of a train braking system.

Description

Technical Field

[0001] The utility model relates to the field of subway train maintenance, in particular to a subway train alignment error measuring ruler. Background Art

[0002] There is no special tool for measuring the alignment error of subway trains in the prior art. Subway trains often miss the alignment when running, and the platform screen doors of subway stations and subway train doors have mutual position detection functions in the working state. When the train stops at the platform, if the train misses the alignment and causes the door and the center line of the screen door to align beyond the error range, the platform screen door cannot be opened, affecting passengers' boarding and alighting. Therefore, a new technology is needed to accurately measure the alignment error of the subway train in a short time when the subway train stops at the platform, so as to provide accurate data support for the calibration and maintenance of the train brake system. Utility Model Content

[0003] The purpose of the utility model is to provide a subway train alignment error measuring ruler, which has two sides, A and B. One of the sides can be selected for measurement according to the actual usage scenario. The center line of the shield door can be located by aligning the alignment arm and the indicator mark with the platform ground marker. The center line of the door can be quickly located by the positioning plate of the vernier. The accurate train alignment error can be obtained by reading the pointer of the vernier in conjunction with the scale line to solve the above-mentioned problem.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a subway train alignment error measuring ruler, comprising an alignment arm and a measuring arm.

[0005] Furthermore, the alignment arm includes an indicator mark.

[0006] Furthermore, the measuring arm includes scale lines, guide grooves, plugs, and cursors.

[0007] Furthermore, the plug is fixedly connected to the guide groove.

[0008] Furthermore, the cursor includes a pointer, a positioning plate, and a slider.

[0009] Furthermore, the needle tip of the pointer is located on the center line of the positioning plate.

[0010] Furthermore, the sliding block can slide in the guiding groove.

[0011] Furthermore, the alignment arm and the measuring arm both have two surfaces, A and B, and the A and B surfaces of the alignment arm and the measuring arm are respectively provided with the indicator marks and scale lines.

[0012] Furthermore, the scale lines are on the A and B sides of the measuring arm, and the reading starting point number 0 is set on one end of the measuring arm close to the marking arm, and the reading numbers increase successively toward the other end of the measuring arm; the 0 reading line of the scale lines and the indicator mark have a collinear geometric relationship.

[0013] The beneficial effects of the utility model are as follows: according to the actual on-site conditions of the train running direction, platform direction, overshooting and undershooting, the operating personnel can select one of the A and B sides of the utility model for measurement, and the center line of the shield door can be located by aligning the indicator mark of the alignment arm with the platform ground marker, and the positioning plate of the cursor can be slid into the center groove of the door sill by sliding the cursor, so as to quickly locate the center line of the door, and the accurate train alignment error can be known by reading the pointer of the cursor in conjunction with the scale line, thereby providing accurate data support for the calibration and maintenance of the train brake system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0015] Figure 1 It is a schematic diagram of the appearance of the A side of the utility model.

[0016] Figure 2 It is a schematic diagram of the appearance of side B of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the guide groove of the utility model.

[0018] Figure 4 It is a schematic diagram of the installation position of the plug of the utility model.

[0019] Figure 5 It is a schematic diagram of the appearance of the cursor of the utility model.

[0020] Figure 6 It is a schematic diagram of the appearance of the cursor of the utility model from another angle.

[0021] Numbers in the figure: 1, alignment arm; 2, measuring arm; 11, indicator mark; 21, cursor; 22, scale line; 23, guide groove; 24, plug; 211, positioning plate; 212, pointer; 213, slider. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the specific implementation methods, wherein the drawings are only used for exemplary descriptions, and only schematic diagrams are shown, not actual drawings, and cannot be understood as limitations on this patent. In order to better illustrate the specific implementation methods of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. Based on the specific implementation methods in the utility model, all other specific implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. It should be further explained that, as mentioned in the content of the utility model, the alignment arm and the measuring arm both have two sides, A and B. In view of the fact that the A and B sides of the alignment arm and the measuring arm have the same technical features and functions, only the A side is described in detail below, and the omitted content is fully understandable to those skilled in the art.

[0023] See also Figure 1-Figure 6 The utility model provides a technical solution: a subway train alignment error measuring ruler, comprising an alignment arm (1) and a measuring arm (2); the top of the alignment arm (1) is provided with an indicator mark (11) for aligning with the centerline marker of the platform side screen door; the measuring arm (2) is provided with a scale line (22), a guide groove (23) and a cursor (21) that can slide in the guide groove (23); the geometric relationship between the zero reading line of the scale line (22) and the indicator mark (11) is collinear; A plug (24) is provided at one end of the guide groove (23) for closing the guide groove (23) to prevent the cursor (21) from sliding out of the guide groove (23); the cursor (23) is provided with a positioning plate (211), a pointer (212), and a slider (213); the positioning plate (211) has the same shape as the center groove of the door sill to ensure that it can slide smoothly into the center groove of the door sill; the needle tip of the pointer (212) is located on the center line of the positioning plate (211).

[0024] Explanation for the collision and under-marking: Ideally, when a subway train stops steadily at the platform, the centerline of the door should be aligned with the centerline of the platform side screen door. This is the correct alignment. When a subway train stops steadily at the platform, the centerline of the door is in front of the centerline of the platform screen door. This is the collision. When a subway train stops steadily at the platform, the centerline of the door is behind the centerline of the platform screen door. This is the under-marking.

[0025] Please continue reading Figure 1-Figure 6When the indicator (11) is aligned with the centerline marker of the platform screen door, it can be determined that the alignment arm (1) is at the centerline of the platform screen door. At this time, the cursor (21) can be slid. When the positioning plate (211) of the cursor (21) slides into the center groove of the door sill, it can be determined that the pointer (212) of the cursor (21) is at the centerline of the door. At this time, the distance between the indicator (11) and the pointer (212) is the alignment error value. At this time, the reading of the pointer (212) on the scale line (22) can be read to know the specific alignment error value of the train stopping this time.

[0026] In a specific usage scenario, the utility model can select one of the two sides A and B of the utility model for use according to the actual situation of the train running direction, platform side, and underrun mark, and repeat the above operation process to measure the mark error of the train's current stop.

[0027] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these specific embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A subway train alignment error measuring ruler, characterized in that The invention comprises a marking arm (1) and a measuring arm (2), wherein the marking arm (1) and the measuring arm (2) both have two surfaces, A and B; the marking arm (1) comprises an indicator mark (11); the measuring arm comprises a cursor (21), a scale mark (22), a guide groove (23), and a plug (24); the cursor (21) comprises a positioning plate (211), a pointer (212), and a slider (213); and the cursor (21) can slide in the guide groove (23).

2. A subway train alignment error measuring ruler according to claim 1, characterized in that The scale lines (22) are on the A and B surfaces of the measuring arm (2), and the reading starting point number 0 is arranged on one end of the measuring arm (2) close to the marking arm (1), and the reading numbers increase successively toward the other end of the measuring arm (2). The geometric relationship between the 0 reading line of the scale lines (22) and the indicator mark (11) is collinear.

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