A positioning device for measuring points of a rail transit coupler

Abstract

The present invention discloses a positioning device for measuring points of a rail transit coupler. The main body of the positioning device is U-shaped and includes a transverse scale and two longitudinal horizontal scales arranged perpendicular to the transverse scale; the longitudinal horizontal scales include a first longitudinal horizontal scale and a second longitudinal horizontal scale; a first longitudinal level indicator and a second longitudinal level indicator are respectively arranged on the first longitudinal horizontal scale and the second longitudinal horizontal scale; the first longitudinal horizontal scale and the second longitudinal horizontal scale are respectively arranged on the transverse scale so as to be laterally movable through a lateral movement guiding structure and can always maintain a state perpendicular to the transverse scale. The positioning device can accurately position the four measuring points on the same circular cross-section where strain gauges need to be arranged, greatly simplifies the operation of measuring point positioning, and improves work efficiency.

Description

Technical Field

[0001] The present invention relates to a detection tool, and more particularly to a strain detection tool. Background Art

[0002] At present, with the rapid development of strain acquisition and detection technology, this technology is increasingly widely used in subway vehicles. Due to the long-term high-load operation of subway vehicles, dynamic testing needs to be carried out on subway vehicles. Dynamic testing generally uses resistance strain gauges for strain acquisition. The working principle of the resistance strain gauge is based on the strain effect, that is, when a conductor or semiconductor material undergoes mechanical deformation under the action of micro-strain on the surface of the measurement point, its resistance value changes accordingly, so as to obtain the degree of micro-strain on the surface of the measurement point.

[0003] Due to the small size and high sensitivity of the strain gauge, the requirements for the pasting position of the strain gauge are very high, and no position deviation is allowed. In the testing of subway vehicles, it is often necessary to arrange strain gauges on components such as couplers and anti-roll torsion bars. Such components are usually a cylinder, and it is necessary to arrange 4 strain gauges on the same circular cross-section of the cylinder, and the mutual distance must be 90 degrees. When using a traditional scale for measurement, it is impossible to position the cylinder as required above; due to the complex position under the vehicle, the tester cannot reach all positions, and the on-site operation is very difficult.

[0004] The positioning of subway dynamic strain measurement points in the prior art has deficiencies in the above aspects. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a positioning device for a subway car coupler measurement point, which can accurately position the four measurement point positions on the same circular cross-section where strain gauges need to be set, greatly simplifies the operation of measurement point positioning, and improves work efficiency.

[0006] To solve this technical problem, the technical solution adopted by the present invention is as follows:

[0007] A positioning device for a subway car coupler measurement point, the main body of the positioning device is U-shaped, and includes a transverse scale and two longitudinal horizontal scales perpendicular to the transverse scale; the longitudinal horizontal scales include a first longitudinal horizontal scale and a second longitudinal horizontal scale; a first longitudinal level indicator and a second longitudinal level indicator are respectively arranged on the first longitudinal horizontal scale and the second longitudinal horizontal scale;

[0008] The first longitudinal horizontal scale and the second longitudinal horizontal scale are respectively movably arranged on the transverse scale through a transverse movement guiding structure and can always maintain a state perpendicular to the transverse scale.

[0009] Further, the first longitudinal level indicator and the second longitudinal level indicator are liquid level indicators, including a transparent display tube filled with 1 / 2 liquid, and having a horizontal reference line and a vertical reference line perpendicular to each other on the transparent display tube.

[0010] Further, the transverse scale is a transverse level scale, and a transverse level indicator is arranged on the transverse level scale. The transverse level indicator is a liquid level indicator, including a transparent display tube filled with 1 / 2 liquid, and having a horizontal reference line and a vertical reference line perpendicular to each other on the transparent display tube.

[0011] Further, the transverse movement guiding structure includes a guide rail convex block and a sliding guide groove.

[0012] Further, the guide rail convex block is a dovetail guide rail convex block or a T-shaped guide rail convex block, and the sliding guide groove is a dovetail sliding guide groove or a T-shaped sliding guide groove.

[0013] Further, the sliding guide groove is arranged on the transverse scale, and the guide rail convex blocks are arranged at one ends of the first longitudinal level scale and the second longitudinal level scale that are matched with the transverse scale.

[0014] The positioning device for the measuring points of the rail transit coupler of the present invention has a unique and reasonable structure, and can quickly and accurately position four measuring points on the same circular section of the cylindrical coupler that are 90 degrees apart from each other. The specific operation is as follows:

[0015] 1. First, move the two longitudinal level scales of the positioning device to both sides (or remove them from the transverse scale).

[0016] 2. Place the transverse scale directly above the coupler cylinder (then reinstall the two longitudinal level scales), and the two longitudinal level scales are respectively arranged on the left and right sides of the coupler cylinder; adjust the distance between the two longitudinal level scales by transverse sliding, and respectively clamp the first longitudinal level scale and the second longitudinal level scale on the left and right side surfaces of the coupler cylinder.

[0017] 3. Then, observe the longitudinal level indicators on the two longitudinal level scales. If the liquid level surface does not coincide with the vertical reference line, rotate the U-shaped positioning device until they coincide (during which, it can be judged by observing whether the liquid level surface of the transparent display tube of the transverse level scale coincides with the horizontal reference line). Then, position and mark the position points where the two longitudinal level scales are in tangential contact with the coupler cylinder, and obtain two measuring points that are 180 degrees apart in the horizontal direction.

[0018] 4. Then, place the transverse scale on the side surface of the coupler cylinder again, and the two longitudinal level scales are respectively arranged on the upper and lower sides of the coupler cylinder; adjust the distance between the two longitudinal level scales by transverse sliding, and respectively clamp the first longitudinal level scale and the second longitudinal level scale on the upper and lower side surfaces of the coupler cylinder.

[0019] 5. Subsequently, observe the longitudinal level indicators on the two longitudinal spirit levels. If the liquid level surface does not coincide with the axis horizontal reference line, rotate the U-shaped positioning device until they coincide. Subsequently, position and mark the points where the two longitudinal spirit levels are tangent to the coupler cylinder, obtaining two measuring points that are 180 degrees apart in two perpendicular directions.

[0020] Using the positioning device of the present invention according to the above positioning operation method can quickly and accurately measure the positions of four measuring points that are 90 degrees apart on the same circular cross-section of the coupler.

[0021] For the longitudinal spirit level, since the transparent display tube of the liquid level indicator can be made relatively long along the axis, the axis horizontal reference line is relatively long. Therefore, when leveling the longitudinal spirit level (when positioning two measuring points that are 180 degrees apart in two perpendicular directions), it is relatively accurate to check whether the liquid level surface in the liquid level indicator of the longitudinal spirit level coincides with the relatively long axis horizontal reference line; relatively speaking, the longitudinal horizontal reference line of the transparent display tube is generally relatively short. Therefore, when making the longitudinal spirit level vertical (when positioning two measuring points that are 180 degrees apart in two horizontal directions), it is time-consuming and troublesome to check whether the liquid level surface in the liquid level indicator of the longitudinal spirit level coincides with the relatively short longitudinal horizontal reference line. Therefore, preferably, a liquid level indicator is also provided on the transverse spirit level. When making the longitudinal spirit level vertical, it can be judged more quickly and accurately by observing whether the liquid level surface in the transparent display tube of the transverse spirit level coincides with the relatively long axis horizontal reference line. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention is provided in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 It is a schematic structural diagram of the positioning device for the measuring points of the rail transit coupler of the present invention.

[0024] In the figure:

[0025] 1. Transverse scale 101. Transverse level indicator

[0026] 2. First longitudinal spirit level 201. First longitudinal level indicator

[0027] 3. Second longitudinal spirit level 301. Second longitudinal level indicator

[0028] 4. Axis horizontal reference line 5. Longitudinal horizontal reference line

[0029] 6. Transverse movement guiding structure 7. Coupler DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0031] Figure 1 A positioning device for measuring points of a rail transit coupler is shown. The main body of the positioning device is U-shaped and includes a transverse ruler 1 and two longitudinal horizontal rulers perpendicular to the transverse ruler 1. The longitudinal horizontal rulers include a first longitudinal horizontal ruler 2 and a second longitudinal horizontal ruler 3. First longitudinal level displays 201 and second longitudinal level displays 301 are respectively arranged on the first longitudinal horizontal ruler 2 and the second longitudinal horizontal ruler 3.

[0032] The first longitudinal horizontal ruler 2 and the second longitudinal horizontal ruler 3 are respectively arranged on the transverse ruler 1 so as to be horizontally movable through a transverse movement guiding structure 7 and can always remain perpendicular to the transverse ruler 1.

[0033] The first longitudinal level display 201 and the second longitudinal level display 301 are liquid level level displays, including a transparent display tube filled with 1 / 2 liquid. An axis horizontal reference line 4 and a longitudinal horizontal reference line 5 perpendicular to each other are provided on the transparent display tube.

[0034] The transverse ruler 1 is a transverse horizontal ruler. A transverse level display 101 is arranged on the transverse horizontal ruler. The transverse level display 101 is a liquid level level display, including a transparent display tube filled with 1 / 2 liquid. An axis horizontal reference line 4 and a longitudinal horizontal reference line 5 perpendicular to each other are provided on the transparent display tube. Of course, due to different designs and requirements, the transverse ruler 1 may not be provided with the transverse level display 101, and the angle of the positioning device can be observed and adjusted only through the first longitudinal level display 201 and the second longitudinal level display 301. When the level display on the horizontal ruler is a relatively long and narrow display tube, it is a better and more convenient choice to provide the transverse ruler 1 with the transverse level display 101.

[0035] The above level displays may also adopt other conventional types of level displays except the liquid level level display, such as a bubble level display, etc., as long as the immediate position state of the U-shaped positioning device can be accurately observed through the level displays on the longitudinal and transverse horizontal rulers.

[0036] The transverse movement guiding structure 6 described above includes a guide rail protrusion and a sliding guide groove. The guide rail protrusion is a dovetail guide rail protrusion (it can also be a T-shaped guide rail protrusion or other shapes), and the sliding guide groove is a dovetail sliding guide groove (it can also be a T-shaped sliding guide groove or other shapes); the sliding guide groove is provided on the transverse scale 1, and the guide rail protrusions are provided at one end of the first longitudinal level scale 2 and the second longitudinal level scale 3 that match the transverse scale 1. Of course, it can also be that guide rail ridges are provided on the transverse scale 1, and the sliding guide grooves are provided at one end of the first longitudinal level scale 2 and the second longitudinal level scale 3 that match the transverse scale 1; or other forms of guiding structures, as long as the first longitudinal level scale 2 and the second longitudinal level scale 3 are respectively transversely movably arranged on the transverse scale 1 through the transverse movement guiding structure 6 and can always maintain a perpendicular state to the transverse scale 1.

[0037] The positioning operation of the positioning device for the measuring points of the rail transit coupler of the present invention is specifically as follows:

[0038] 1. First, move the two longitudinal level scales of the positioning device to both sides (or remove them from the transverse scale).

[0039] 2. Place the transverse scale 1 directly above the cylinder of the coupler 7 (then reinstall the two longitudinal level scales), and the two longitudinal level scales are respectively arranged on the left and right sides of the cylinder of the coupler 7; adjust the distance between the two longitudinal level scales by transverse sliding, and respectively clamp the first longitudinal level scale 2 and the second longitudinal level scale 3 on the left and right side surfaces of the cylinder of the coupler 7.

[0040] 3. Subsequently, observe the longitudinal level indicators on the two longitudinal level scales. If the liquid level surface does not coincide with the longitudinal level reference line, rotate the U-shaped positioning device until they coincide. Subsequently, position and mark the position points where the two longitudinal level scales are tangent to the cylinder of the coupler 7 to obtain two measuring points that are 180 degrees apart in the horizontal direction.

[0041] 4. Then, place the transverse scale 1 on the side surface of the cylinder of the coupler 7, and the two longitudinal level scales are respectively arranged on the upper and lower sides of the cylinder of the coupler 7; adjust the distance between the two longitudinal level scales by transverse sliding, and respectively clamp the first longitudinal level scale 2 and the second longitudinal level scale 3 on the upper and lower side surfaces of the cylinder of the coupler 7.

[0042] 5. Subsequently, observe the longitudinal level indicators on the two longitudinal level scales. If the liquid level surface does not coincide with the axial level reference line, rotate the U-shaped positioning device until they coincide. Subsequently, position and mark the position points where the two longitudinal level scales are tangent to the coupler cylinder to obtain two measuring points that are 180 degrees apart in the vertical direction.

[0043] Using the positioning device of the present invention, the positions of four measurement points that are 90 degrees to each other on the same circular cross-section of the coupler 7 can be quickly and accurately measured according to the above positioning operation method.

[0044] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A positioning device for measuring points of a rail transit coupler, characterized in that: The main body of the positioning device is U-shaped and includes a horizontal ruler and two vertical horizontal rulers perpendicular to the horizontal ruler; the vertical horizontal rulers include a first vertical horizontal ruler and a second vertical horizontal ruler; a first vertical level display and a second vertical level display are respectively arranged on the first vertical horizontal ruler and the second vertical horizontal ruler; The first vertical horizontal ruler and the second vertical horizontal ruler are respectively arranged on the horizontal ruler in a laterally movable manner through a lateral movement guiding structure and can always maintain a perpendicular state to the horizontal ruler.

2. The positioning device for the measuring points of a rail transit coupler according to claim 1, characterized in that: The first vertical level display and the second vertical level display are liquid level level displays, including a transparent display tube filled with 1 / 2 liquid, and having an axis horizontal reference line and a longitudinal horizontal reference line perpendicular to each other on the transparent display tube.

3. The positioning device for the measuring points of a rail transit coupler according to claim 2, characterized in that: The horizontal ruler is a horizontal level ruler, and a horizontal level display is arranged on the horizontal level ruler. The horizontal level display is a liquid level level display, including a transparent display tube filled with 1 / 2 liquid, and having an axis horizontal reference line and a longitudinal horizontal reference line perpendicular to each other on the transparent display tube.

4. A positioning device for a measuring point of a rail transit coupler according to any one of claims 1 to 3, characterized in that: The lateral movement guiding structure includes a guide rail protrusion and a sliding guide groove.

5. The positioning device for the measuring points of a rail transit coupler according to claim 4, characterized in that: The guide rail protrusion is a dovetail guide rail protrusion or a T-shaped guide rail protrusion, and the sliding guide groove is a dovetail sliding guide groove or a T-shaped sliding guide groove.

6. The positioning device for the measuring points of a rail transit coupler according to claim 5, characterized in that: The sliding guide groove is arranged on the horizontal ruler, and the guide rail protrusions are arranged at the ends of the first vertical horizontal ruler and the second vertical horizontal ruler that match the horizontal ruler.

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