Tool for detecting thickness of lower center plate of bogie of passenger train

Abstract

The utility model relates to the technical field of railway detection, and discloses a railway carriage bogie lower center plate thickness detection tool which comprises a base, the base is provided with a ruler body, the ruler body is of an L-shaped structure, and a detection head is slidably and fixedly arranged on a horizontal beam of the ruler body through a sliding seat. The detection head comprises a ruler frame provided with a scribed line groove and a main ruler capable of sliding in the extending direction of the ruler frame, and the ruler frame is perpendicular to the bottom face of the base. According to the railway carriage bogie center plate thickness detection tool, the detection of the thickness d1 of the lower center plate and the thickness d from the abrasion surface of the lower center plate to the base can be completed without replacing the detection tool, the detection process is greatly simplified, and the detection efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of railway detection, and more specifically to a tool for detecting the thickness of a lower center plate of a railway passenger car bogie. Background Art

[0002] According to the railway passenger car maintenance regulations, the thickness from the wear surface to the base of the lower center plate of the railway passenger car bogie shall not be less than 24mm, and the thickness of the lower center plate shall not be less than 54mm. However, due to the shape of the lower center plate, the measuring claws of the height gauge or depth gauge cannot directly contact the measured surface. Usually, the height gauge is used to measure the thickness d1 of the lower center plate, and the depth gauge is used to measure the depth d2 of the lower center plate. The thickness d=d1-d2 from the wear surface of the lower center plate to the base is calculated. Therefore, the detection process is relatively cumbersome and time-consuming.

[0003] In summary, how to simplify the detection process of the thickness from the wear surface of the lower center plate to the base is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a railway passenger car bogie center plate thickness detection tooling, which can complete the detection of the lower center plate thickness d1 and the thickness d from the lower center plate wear surface to the base without replacing the detection tooling, greatly simplifying the detection process and significantly improving the detection efficiency.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A tool for detecting the thickness of the lower center plate of a railway passenger car bogie comprises a base, the base is provided with a ruler body, the ruler body is an L-shaped structure, a detection head can be slidably and fixedly arranged on the horizontal beam of the ruler body through a sliding seat, the detection head comprises a ruler frame provided with a groove and a main ruler that can slide along the extension direction of the ruler frame, and the ruler frame is arranged perpendicular to the bottom surface of the base.

[0007] Preferably, the sliding seat is a C-shaped structure or an L-shaped structure, the top plate and / or the bottom plate of the sliding seat is provided with mounting holes for installing fasteners, the horizontal beam is provided with a plurality of connecting holes for installing the fasteners along the extension direction, and the ruler frame is detachably provided on the side plate of the sliding seat.

[0008] Preferably, the ruler frame is arranged on the side of the sliding seat through ruler frame connecting bolts, and the ruler frame is symmetrically distributed with respect to the vertical plane where the axis of the main ruler is located.

[0009] Preferably, an adjustment pad may be provided between the sliding seat and the horizontal beam, and the adjustment pad is used to adjust the height of the sliding seat and the scale frame provided on the sliding seat, so as to achieve calibration and zeroing of the main scale before detection.

[0010] Preferably, a detection head steel column is rotatably provided in the detection end of the main ruler, and the detection head steel column is used to reduce the wear of the main ruler.

[0011] Preferably, the vertical support rod of the ruler body is slidably connected to the base, and the ruler body can move relative to the base in the extension direction of the base.

[0012] Preferably, the base is provided with a slide groove along the extension direction, and the vertical support rod is provided with a sliding part slidably arranged in the slide groove.

[0013] Preferably, a locking member is provided between the base and the sliding portion, and the locking member is used to fix the relative position of the ruler body and the base.

[0014] During inspection, first move the main ruler downward so that the detection end of the main ruler contacts the surface of the inspection platform where the lower center plate to be inspected is placed, and record the height h0 of the main ruler at this time; then move the inspection head relative to the horizontal beam of the ruler body, move the main ruler to above the end face of the lower center plate, and then move the main ruler downward so that the detection end of the main ruler contacts the end face of the lower center plate, record the height h1 of the main ruler at this time, and calculate the thickness d1=h1-h0 of the lower center plate; then continue to move the inspection head to above the wear surface of the lower center plate, move the main ruler downward so that the detection end of the main ruler contacts the wear surface of the lower center plate, record the height h2 of the main ruler at this time, and calculate the thickness d=h2-h0 from the wear surface of the lower center plate to the base.

[0015] Compared with the prior art that uses a height gauge and a depth gauge to measure the thickness d1 and the depth d2 of the lower center plate respectively, and then calculates the thickness d from the wear surface of the lower center plate to the base, the lower center plate thickness detection tooling provided by the utility model for the railway passenger car bogie can complete the detection of the thickness d1 of the lower center plate and the thickness d from the wear surface of the lower center plate to the base without changing the detection tooling, which greatly simplifies the detection process and significantly improves the detection efficiency;

[0016] In addition, the thickness d from the wear surface of the lower center plate to the base is directly measured by the detection tooling. Compared with the calculation based on the lower center plate thickness d1 and the lower center plate depth d2, the measurement error is smaller and the measurement result is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1A schematic structural diagram of a specific embodiment of a tool for detecting the thickness of the lower center plate of a railway passenger car bogie provided by the utility model;

[0019] Figure 2 This is a schematic diagram of the calibration principle of the tooling for testing the thickness of the lower center plate of a railway passenger car bogie;

[0020] Figure 3 It is a schematic diagram of the principle of measuring the thickness d1 of the lower center plate of a railway passenger car bogie lower center plate thickness detection tool;

[0021] Figure 4 This is a schematic diagram of the principle of the thickness detection tool for the lower center plate of a railway passenger car bogie to measure the thickness d from the wear surface of the lower center plate to the base.

[0022] Figure 1-Figure 4 middle:

[0023] 1-base; 2-ruler body; 3-sliding seat; 4-ruler frame; 5-main ruler; 51-detection head steel column; 6-horizontal adjustment bolt; 7-ruler frame connecting bolt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The core of the utility model is to provide a railway passenger car bogie center plate thickness detection tooling, which can complete the detection of the lower center plate thickness d1 and the thickness d from the lower center plate wear surface to the base without replacing the detection tooling, greatly simplifying the detection process and significantly improving the detection efficiency.

[0026] The utility model provides a tool for detecting the thickness of the lower center plate of a railway passenger car bogie, comprising a base 1, wherein the base 1 is provided with a ruler body 2, the ruler body 2 is an L-shaped structure, a detection head is slidably and fixedly arranged on a horizontal beam of the ruler body 2 through a sliding seat 3, the detection head comprises a ruler frame 4 provided with a groove for engraving and a main ruler 5 which can slide along the extension direction of the ruler frame 4, and the ruler frame 4 is arranged perpendicular to the bottom surface of the base 1.

[0027] The base 1 is horizontally arranged, and the base 1 is the main supporting structure of the detection tooling, and is used to support the ruler 2 and the detection head; the base 1 can be directly arranged as follows Figure 1 The plate-like structure shown can also be set to a more complex structure;

[0028] The ruler body 2 is an L-shaped structure, mainly including a horizontal beam arranged horizontally and a vertical support rod arranged vertically. One end of the vertical support rod is connected to the horizontal beam, and the other end is connected to the base 1, so that the horizontal beam of the ruler body 2 protrudes from the outer edge of the base 1, and the detection head is located outside the base 1, which is convenient for the detection head to directly detect the end face of the lower center plate and the wear surface of the lower center plate directly below during detection. Figure 3 and Figure 4 shown.

[0029] In order to prevent the protruding ruler body 2 and the detection head from causing the center of gravity of the detection tool to shift, resulting in the base 1 being unable to fit with the surface of the detection platform during detection, the base 1 is usually set to be a solid structure with a heavier mass, and the ruler body 2 and the detection head are both lighter in mass. For example, the ruler body 2 and the detection head are mostly made of materials with lower density, and the ruler body 2 is mostly set to be a hollow structure or a thin plate structure.

[0030] Of course, a counterweight block may be provided on the base 1 to maintain the center of gravity of the detection device on the base 1 so that the base 1 fits the surface of the detection platform.

[0031] The detection head can be slidably arranged on the horizontal beam of the ruler body 2 through the sliding seat 3. When the position of the base 1 is fixed, the horizontal position of the detection head can be adjusted. Therefore, when detecting the thickness d1 of the lower core plate and the thickness d from the wear surface of the lower core plate to the base 1, there is no need to adjust the position of the base 1, and the detection process is convenient and time-saving.

[0032] The length of the horizontal beam of the ruler body 2 is determined according to the size of the lower center plate in actual production, especially the radius of the end face of the lower center plate, so as to realize the thickness detection of both the end face of the lower center plate and the wear surface of the lower center plate to the bottom surface when the position of the base 1 remains unchanged.

[0033] The scale frame 4 of the detection head is arranged perpendicular to the bottom surface of the base 1. Since the bottom surface of the base 1 abuts against the surface of the detection platform, and the surface of the detection platform abuts against the bottom surface of the lower center plate, the scale frame 4 is perpendicular to the surface of the detection platform, that is, the bottom surface of the lower center plate. Therefore, the main scale 5 slides along the extension direction of the scale frame 4, that is, the main scale 5 can slide along the normal direction of the bottom surface of the lower center plate, so the main scale 5 can detect the height of each part.

[0034] The ruler frame 4 is provided with a line groove on at least one side of the main ruler 5. The main ruler 5 is provided with a line groove. When the detection end of the main ruler 5 abuts against the plane to be detected, the scale of the line groove corresponding to the line groove of the main ruler 5 is the height of the plane to be detected. In order to facilitate reading, the ruler frame 4 is usually provided with a main ruler 5 on both sides of the main ruler 5.

[0035] The detection range of the detection head should be larger than the size range of the lower center plate thickness in actual production, that is, the detection range should not be less than 60mm. The specific detection range and detection accuracy need to be determined based on the lower center plate thickness detection requirements in actual production, with reference to the height gauge and depth gauge selected in the prior art. I will not go into details here.

[0036] In order to allow the main scale 5 to slide along the extension direction of the scale frame 4, a scale groove for installing the main scale 5 is usually provided on the surface of the scale frame 4. The scale groove is mostly set as an open arc groove to reduce the friction between the main scale 5 and the scale groove and facilitate the sliding of the main scale 5 relative to the scale frame 4.

[0037] During the test, first move the main ruler 5 downward so that the detection end of the main ruler 5 contacts the surface of the detection platform on which the lower center plate to be tested is placed, and record the height h0 of the main ruler 5 at this time, such as Figure 2 Then move the detection head relative to the horizontal beam of the ruler body 2, move the main ruler 5 to the top of the end surface of the lower center plate, and then move the main ruler 5 downward so that the detection end of the main ruler 5 contacts the end surface of the lower center plate, as shown in FIG. Figure 3 As shown, record the height h1 of the main ruler 5 at this time, and calculate the thickness of the lower center plate d1=h1-h0; then continue to move the detection head to the top of the wear surface of the lower center plate, and move the main ruler 5 downward so that the detection end of the main ruler 5 contacts the wear surface of the lower center plate, as shown in FIG. Figure 4 As shown, record the height h2 corresponding to the main scale 5 at this time, and calculate the thickness d=h2-h0 from the wear surface of the lower center plate to the base 1.

[0038] In order to facilitate the calculation of the thickness d1 of the lower center plate and the thickness d from the wear surface of the lower center plate to the base 1, preferably, h0=0 can be set, that is, the main scale 5 is calibrated and zeroed before detection so that when the main scale 5 contacts the surface of the detection platform, the corresponding height of the main scale 5 is 0.

[0039] The calibration and zeroing of the main scale 5 can be achieved by adjusting the height of the sliding seat 3 relative to the horizontal beam, or by adjusting the height of the scale frame 4 relative to the sliding seat 3;

[0040] In order to simplify the structure of the detection head, a ruler frame 4 is usually fixed on the sliding seat 3, and an adjustment pad is provided between the sliding seat 3 and the horizontal beam. By changing the number and height of the adjustment pads and adjusting the height of the sliding seat 3 and the ruler frame 4 provided on the sliding seat 3, the calibration and zeroing of the main ruler 5 before detection is completed.

[0041] In this embodiment, the thickness d1 of the lower core plate and the thickness d from the wear surface of the lower core plate to the base 1 can be detected without changing the detection tooling, which greatly simplifies the detection process and significantly improves the detection efficiency.

[0042] The thickness d from the wear surface of the lower center plate to the base 1 is directly measured by the detection tooling. Compared with the calculation based on the lower center plate thickness d1 and the lower center plate depth d2, the measurement error is smaller and the measurement result is more accurate.

[0043] Preferably, in order to extend the service life of the main ruler 5, a detection head steel column 51 can be rotatably provided in the detection end of the main ruler 5, and there is rolling contact between the detection head steel column 51 and the plane to be detected. Compared with the friction between the detection tip and the plane to be detected, the pressure at the contact point is smaller and less prone to wear.

[0044] On the basis of the above embodiments, the sliding seat 3 can be set to a C-shaped structure or an L-shaped structure, the top plate and / or the bottom plate of the sliding seat 3 are provided with mounting holes for installing fasteners, the horizontal beam is provided with a plurality of connecting holes for installing fasteners along the extension direction, and the ruler frame 4 is detachably arranged on the side plate of the sliding seat 3.

[0045] Among them, the sliding seat 3 is a C-shaped structure or an L-shaped structure, and the opening of the C-shaped structure can face the bottom or side of the horizontal beam, which can make the sliding seat 3 relatively stably and reliably connected to the horizontal beam of the ruler body 2. Compared with the annular structure, it can also reduce the contact area between the sliding seat 3 and the horizontal beam, thereby reducing the friction resistance between the two and facilitating the horizontal adjustment of the sliding seat 3 and the detection head.

[0046] The sliding seat 3 is provided with a mounting plate, the horizontal beam of the ruler body 2 is provided with a plurality of connecting holes along the extending direction, and fasteners such as fastening bolts and connecting pins are provided between the sliding seat 3 and the horizontal beam, such as Figure 1 The horizontal adjustment bolt 6 shown can adjust and fix the relative position of the sliding seat 3 and the horizontal beam by adjusting the mounting hole and the connecting hole connected by the fastener;

[0047] The number and spacing of the connecting holes on the horizontal beam determine the horizontal adjustment range and horizontal adjustment accuracy of the sliding seat 3, which are determined according to actual detection needs.

[0048] The ruler frame 4 is detachably arranged on the side plate of the sliding seat 3, and the two can be connected by means of snap connection, bolt connection, pin connection, etc., so as to facilitate the replacement of the detection head after wear; considering the manufacturing and assembly issues, the ruler frame 4 is usually arranged on the side of the sliding seat 3 through the ruler frame connecting bolts 7, and the ruler frame 4 is symmetrically distributed about the vertical plane where the axis of the main ruler 5 is located. The connection structure is simple, and the connection is stable and reliable.

[0049] On the basis of the above embodiment, in order to facilitate the storage of the detection tooling, a vertical support rod of the ruler body 2 can be provided to be slidably connected to the base 1, and the ruler body 2 can move relative to the base 1 in the extension direction of the base 1.

[0050] The ruler body 2 can move in the extension direction relative to the base 1. The moving direction of the ruler body 2 can be parallel to the extension direction of the base 1, or the angle between the moving direction of the ruler body 2 and the extension direction of the base 1 can be an acute angle, so that the moving direction of the ruler body 2 has a component in the extension direction of the base 1.

[0051] Therefore, when testing, the ruler body 2 can be slid to the testing position so that the testing head extends outward and is located outside the base 1; when storing, the ruler body 2 can be slid to the storage position so that the testing head falls above the base 1, thereby shortening the length of the testing tooling and further reducing the space required for storage.

[0052] In order to realize the sliding connection between the vertical support rod and the base 1, a sliding groove is usually provided in the extension direction of the base 1, and the vertical support rod is provided with a sliding part that slides in the sliding groove; the sliding groove can be set to a rectangular groove, a trapezoidal groove or a T-shaped groove, etc., as long as the sliding part is slidably connected to the sliding groove.

[0053] Preferably, a locking member may be provided between the base 1 and the sliding portion, and the locking member is used to fix the relative position of the ruler body 2 and the base 1 to prevent the ruler body 2 from sliding relative to the base 1 during detection and affecting the detection result of the detection head.

[0054] The above-mentioned locking member can refer to the fastener arrangement between the sliding seat 3 and the horizontal beam of the ruler body 2 mentioned above.

[0055] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0056] The above is a detailed introduction to the tooling for detecting the thickness of the lower center plate of the railway passenger car bogie provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A tool for detecting the thickness of the lower center plate of a railway passenger car bogie, characterized in that: The invention comprises a base (1), wherein the base (1) is provided with a ruler body (2), wherein the ruler body (2) is an L-shaped structure, and a detection head is slidably and fixably arranged on a horizontal beam of the ruler body (2) via a sliding seat (3), wherein the detection head comprises a ruler frame (4) provided with a groove for engraving and a main ruler (5) slidable along an extension direction of the ruler frame (4), and wherein the ruler frame (4) is arranged perpendicular to the bottom surface of the base (1).

2. The railway passenger car bogie lower center plate thickness detection tool according to claim 1 is characterized in that: The sliding seat (3) is a C-shaped structure or an L-shaped structure; the top plate and / or the bottom plate of the sliding seat (3) are provided with mounting holes for mounting fasteners; the horizontal beam is provided with a plurality of connection holes for mounting the fasteners along the extension direction; and the ruler frame (4) is detachably provided on the side plate of the sliding seat (3).

3. The tool for detecting the thickness of the lower center plate of a railway passenger car bogie according to claim 2 is characterized in that: The ruler frame (4) is arranged on the side of the sliding seat (3) via ruler frame connecting bolts (7), and the ruler frame (4) is symmetrically distributed with respect to the vertical plane where the axis of the main ruler (5) is located.

4. The railway passenger car bogie lower center plate thickness detection tool according to claim 2, characterized in that: An adjustment pad may also be provided between the sliding seat (3) and the horizontal beam, the adjustment pad being used to adjust the height of the sliding seat (3) and the scale frame (4) provided on the sliding seat (3), so as to achieve calibration and zeroing of the main scale (5) before detection.

5. The tool for detecting the thickness of the lower center plate of a railway passenger car bogie according to any one of claims 1 to 4, characterized in that: A detection head steel column (51) is rotatably provided in the detection end of the main scale (5), and the detection head steel column (51) is used to reduce the wear of the main scale (5).

6. The tool for detecting the thickness of the lower center plate of a railway passenger car bogie according to any one of claims 1 to 4, characterized in that: The vertical support rod of the ruler body (2) is slidably connected to the base (1), and the ruler body (2) can move relative to the base (1) in the extension direction of the base (1).

7. The tool for detecting the thickness of the lower center plate of a railway passenger car bogie according to claim 6 is characterized in that: The base (1) is provided with a slide groove along the extension direction, and the vertical support rod is provided with a sliding part slidably arranged in the slide groove.

8. The tool for detecting the thickness of the lower center plate of a railway passenger car bogie according to claim 7 is characterized in that: A locking member is also provided between the base (1) and the sliding portion, and the locking member is used to fix the relative position of the ruler body (2) and the base (1).

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