Graphite type cast steel metro wheel rim outside inner diameter measuring scale

Abstract

This utility model relates to the field of measuring the outer inner diameter of wheel rims. Specifically, it relates to a graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler, comprising: a main ruler with graduation lines; a fixed measuring claw fixedly connected to the main ruler, the fixed measuring claw having a knife-edge measuring part; a support mechanism disposed on the main ruler; and a movable measuring claw auxiliary ruler, the movable measuring claw auxiliary ruler being mounted on the main ruler via a second frame, the second frame having a first locking part; the movable measuring claw auxiliary ruler is located between the fine-tuning ruler frame and the movable support part, the movable measuring claw auxiliary ruler also having a knife-edge measuring part, and the knife-edge measuring parts on the movable measuring claw auxiliary ruler and the fixed measuring claw are arranged opposite each other to abut against opposite sides of the outer inner diameter surface of the wheel rim. It can achieve accurate measurement while ensuring consistency of measurement position when measuring the outer inner diameter of the wheel rim.

Description

Technical Field

[0001] This utility model relates to the field of measuring the outer inner diameter of wheel rims, specifically, to a graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler. Background Technology

[0002] As a key component in the rail transit field, the manufacturing precision of graphite-type cast steel urban rail wheels directly affects the safety and stability of train operation. The outer inner diameter of the wheel rim, a crucial parameter for wheel-rail matching, typically has a nominal size of 7100mm, with tolerances strictly controlled within -0.4mm. While traditional measuring tools such as 1-meter vernier calipers are widely used in machining, their limited contact area makes it difficult to maintain a stable measurement reference when measuring large-diameter ring-shaped workpieces. When the contact between the measuring surface and the workpiece is point or line contact, the measurement position is easily affected by the magnitude and angle of the operator's force, leading to inconsistencies in repeated measurements. Furthermore, the measurement accuracy of ordinary vernier calipers is limited by their mechanical structure, making it difficult to meet the stringent tolerance requirements for the outer inner diameter of the wheel rim at a conventional accuracy of ±0.02mm, easily resulting in accumulated measurement errors. Existing inspection methods either cannot guarantee the consistency of the measurement position or cannot simultaneously meet the dual requirements of large-size measurement and minute tolerance inspection. Utility Model Content

[0003] The purpose of this utility model is to provide a measuring ruler for the outer inner diameter of the wheel rim of a graphite-type cast steel urban rail vehicle. This ruler can accurately measure the outer inner diameter of the wheel rim of a graphite-type cast steel urban rail vehicle while ensuring the consistency of the measurement position.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler, comprising:

[0006] The main scale has graduation lines along its length.

[0007] A fixed measuring claw is fixedly connected to the main scale. The fixed measuring claw is provided with a knife-edge measuring part, which is used to abut against the outer inner diameter surface of the wheel rim.

[0008] A support mechanism, mounted on the main scale, is used for positioning and supporting on the outer surface of the graphite-type cast steel urban rail vehicle wheel rim.

[0009] A movable measuring claw auxiliary ruler is mounted on the main ruler via a second frame. The second frame is provided with a first locking part for locking the movable measuring claw auxiliary ruler and the main ruler. The movable measuring claw auxiliary ruler is located between the fine-tuning ruler frame and the movable support part at the right end. The movable measuring claw auxiliary ruler is also provided with a knife-edge measuring part, and the knife-edge measuring part on the movable measuring claw auxiliary ruler is arranged opposite to the knife-edge measuring part on the fixed measuring claw so as to abut against the opposite sides of the inner diameter surface of the outer side of the wheel rim.

[0010] Furthermore, the support mechanism includes a fixed support part and a movable support part, which are respectively disposed at the left and right ends of the main scale;

[0011] The movable support includes a support rod and a first frame connected together. The first frame is sleeved on the outside of the main scale and can move along the main scale. A second locking part is provided on the first frame, which is used to lock and fix the main scale to the first frame. The bottom of the fixed support and the bottom of the support rod are used to support the outer surface of the graphite cast steel urban rail wheel rim.

[0012] Furthermore, it also includes a fine-tuning frame, which is fitted around the outside of the main scale and can move along the main scale. The fine-tuning frame is provided with a third locking part for locking and fixing the fine-tuning frame to the main scale.

[0013] A fine-tuning screw is connected between the movable measuring claw auxiliary scale and the fine-tuning frame. The two frames are threadedly connected to the fine-tuning screw, which is used to fine-tune the position of the movable measuring claw auxiliary scale.

[0014] Furthermore, the fixed measuring claw is located between the fixed support and the fine-tuning ruler frame.

[0015] Furthermore, both the fixed support and the support rod are provided with support plates at their bottoms. The bottom surface of the support plate is a support positioning surface, which is used to support the outer surface of the graphite-type cast steel urban rail wheel rim.

[0016] Furthermore, the fixed measuring jaw and the main scale are an integral structure, the lower left part of the fixed measuring jaw is the knife edge measuring part, and the lower right part of the movable measuring jaw auxiliary scale is the knife edge measuring part.

[0017] Furthermore, the knife-edge measuring part has a triangular prism structure, and the side edge of the knife-edge measuring part is used to abut against the outer inner diameter surface of the wheel rim.

[0018] Furthermore, the first locking part, the second locking part, and the third locking part are each equipped with locking bolts.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This application provides a graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler. When measuring the outer inner diameter of the wheel rim, it is first supported on the outer surface of the wheel rim by a support mechanism for stability. Then, the knife-edge measuring part of one side of the fixed measuring claw is gently placed into and touches the outer inner diameter surface of the wheel rim to form contact. The movable measuring claw auxiliary ruler is moved laterally so that its knife-edge measuring part also gently touches the other side of the outer inner diameter surface of the wheel rim. In this way, the knife-edge measuring parts on the fixed measuring claw and the knife-edge measuring parts on the movable measuring claw auxiliary ruler are respectively pressed against the opposite sides of the outer inner diameter surface of the wheel rim. Then, the movable measuring claw auxiliary ruler is locked and fixed by the first locking part. The reading can then be taken from the scale line on the main ruler to measure the outer inner diameter of the wheel rim, ensuring the accuracy of the measurement result. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an axonometric drawing of the graphite-type cast steel urban rail wheel rim outer inner diameter measuring ruler of this utility model.

[0023] Figure 2 This is a front view of the graphite-type cast steel urban rail wheel rim outer inner diameter measuring ruler of this utility model.

[0024] Figure 3 This is a partial structural schematic diagram of the measuring ruler for the outer inner diameter of the wheel rim of this utility model (with enlarged partial views of points I, II, and III).

[0025] Figure 4 This is a partial structural diagram of the knife-edge measuring part on the movable measuring claw auxiliary scale of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the wheel rim outer inner diameter measuring ruler of this utility model when measuring the outer inner diameter of the wheel rim.

[0027] In the picture:

[0028] 1 - Main scale; 101 - Scale line;

[0029] 2-Moving support unit; 201-Support rod;

[0030] 202 - First frame; 203 - Second locking part;

[0031] 3- Fine-tuning frame; 4- Third locking part;

[0032] 5-Fixed measuring jaws;

[0033] 6-Modular measuring jaw auxiliary scale; 601-Second frame; 602-First locking part;

[0034] 7-Fixed support; 8-Fine-adjusting screw; 9-Knife-edge measuring part;

[0035] 10 - Support plate; 1001 - Support positioning surface. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] Example 1

[0044] Reference Figures 1-5 (All dimensions in the figure are in millimeters), a graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler, comprising:

[0045] Main scale 1 is horizontally set, and scale lines 101 are set on the main scale 1 along its length. The scale lines 101 on the main scale 1 are horizontal scale lines 101, which are used to take readings when measuring the top diameter of the noise reduction tank.

[0046] A support mechanism, mounted on the main scale 1, is used for positioning and supporting on the outer surface of the graphite-type cast steel urban rail vehicle wheel rim.

[0047] The fine-adjustment frame 3 is fitted onto the main ruler 1 without any gap between them. The fine-adjustment frame 3 is slidably connected to the main ruler 1 and can move laterally along the main ruler 1. Since there is no gap between them, it is ensured that the fine-adjustment frame 3 will not wobble when it moves laterally. The fine-adjustment frame 3 is provided with a third locking part 4 for locking and fixing the fine-adjustment frame 3 to the main ruler 1.

[0048] Fixed measuring claw 5 is fixedly connected to the main scale 1, and the fixed measuring claw 5 is located between the movable support part 2 and the fine adjustment scale frame 3 at the left end. The fixed measuring claw 5 is provided with a knife edge measuring part 9, which is used to abut against the outer inner diameter surface of the wheel rim.

[0049] The movable measuring claw auxiliary ruler 6 is mounted on the main ruler 1 via a second frame 601. There is no gap between the second frame 601 and the main ruler 1. The second frame 601 is slidably connected to the main ruler 1 and can move laterally along the main ruler 1. Since there is no gap, the second frame 601 will not wobble when moving laterally. The second frame 601 is provided with a first locking part 602 for locking the movable measuring claw auxiliary ruler 6 and the main ruler 1. The movable measuring claw auxiliary ruler 6 is located between the fine-tuning ruler frame 3 and the movable support part 2 at the right end. The movable measuring claw auxiliary ruler 6 is also provided with a knife-edge measuring part 9. The knife-edge measuring part 9 on the movable measuring claw auxiliary ruler 6 is arranged opposite to the knife-edge measuring part 9 on the fixed measuring claw 5 so as to abut against the opposite sides of the inner diameter surface of the outer side of the wheel rim.

[0050] A fine-tuning screw 8 is connected between the movable measuring claw scale 6 and the fine-tuning frame 3. The two frames are threadedly connected to the fine-tuning screw 8. The fine-tuning screw 8 is used to fine-tune the position of the movable measuring claw scale 6.

[0051] In this embodiment, the support mechanism includes a fixed support part 7 and a movable support part 2, which are respectively disposed at the left and right ends of the main scale 1. The movable support part 2 includes a support rod 201 and a first frame 202 connected to each other. The first frame 202 is sleeved on the outside of the main scale 1 without any gap. The first frame 202 is slidably connected to the main scale 1 and can move laterally along the main scale 1. Since there is no gap, the first frame 202 will not shake when it moves laterally. A second locking part 203 is provided on the first frame 202, which is used to lock and fix the main scale 1 to the first frame 202. The bottom of the fixed support part 7 and the bottom of the support rod 201 are used to jointly support the outer surface of the graphite cast steel urban rail wheel rim to play a role in stable support and positioning.

[0052] Preferably, a support plate 10 is provided at the bottom of the fixed support part 7 and the bottom of the support rod 201. The bottom surface of the support plate 10 is the support positioning surface 1001. These two support plates 10 are used to stably position the outer surface of the wheel rim to ensure that the entire measuring ruler will not slide or deviate.

[0053] The fixed measuring claw 5 and the main scale 1 are integrally formed. The lower left part of the fixed measuring claw 5 is the knife edge measuring part 9, and the lower right part of the movable measuring claw auxiliary scale 6 is the knife edge measuring part 9.

[0054] Preferably, the bottom of both the fixed measuring claw 5 and the bottom of the movable measuring claw scale 6 are pointed structures, facilitating insertion into the inner side of the wheel rim. Furthermore, the knife-edge measuring part 9 is a triangular prism structure, with one side of the triangular prism structure integrated with the movable measuring claw scale 6 to form a single unit, exposing only one side edge of the triangular prism structure. This side edge is used to abut against the outer inner diameter surface of the wheel rim. Figure 4 As shown.

[0055] In this embodiment, the first locking part 602, the second locking part 203, and the third locking part 4 are all made of locking bolts, and bolt holes matching the first locking part 602 are opened on the outside of the first frame 202, bolt holes matching the second locking part 203 are opened on the outside of the fine adjustment frame 3, and bolt holes matching the third locking part 4 are opened on the second frame 601.

[0056] The operating steps for measuring the inner diameter of the outer side of the wheel rim are as follows:

[0057] 1. The support plate 10 of the fixed support part 7 and the support plate 10 of the movable support part 2 are placed flat on the outer surface of the wheel rim to provide stability.

[0058] 2. Gently place the knife-edge measuring part 9 of the fixed measuring claw 5 into the outer inner diameter surface of the wheel rim.

[0059] 3. Move the movable measuring claw so that its knife-edge measuring part 9 also gently touches the other side of the outer inner diameter surface of the wheel rim.

[0060] 4. After both sides of the knife-edge measuring part 9 are tightened, the position of the movable measuring claw is further adjusted by tightening the fine-tuning screw 8 to achieve further tightening and ensure the accuracy of the measurement result. At this time, the maximum reading position is found, and then the fine-tuning scale frame 3 is tightened by the third locking part 4.

[0061] 5. Read the reading on scale line 101 to complete the measurement of the inner diameter of the outer side of the wheel rim.

[0062] Technical advantages:

[0063] High stability: The design of the fixed support part 7 and the movable support part 2 avoids the instability problem caused by the small support surface of ordinary vernier calipers.

[0064] High measurement accuracy: The combination of the fine-tuning frame 3 and the fine-tuning screw 8 can achieve very fine adjustments, ensuring that the measured values ​​meet strict tolerance requirements.

[0065] Easy to operate: The overall design is simple and clear, easy to use, and suitable for promotion and application in actual production.

[0066] Application scenarios:

[0067] This measuring ruler is particularly suitable for quality inspection of graphite cast steel urban rail wheels in the rail transit industry. Especially when high-precision measurement is required, it not only improves measurement efficiency but also significantly enhances the reliability of measurement results.

[0068] In this embodiment, the measuring range of the measuring ruler is designed to be φ695mm~φ725mm.

[0069] Example 2

[0070] This embodiment provides a graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler, which differs from the technical solution of Embodiment 1 in that:

[0071] In this embodiment, the fixed support part 7 adopts a support rod 201, which is an integral structure with the main scale 1, and the support rod 201 has the same structure as the support rod 201 of the movable support part 2, as detailed below:

[0072] The support rod 201 includes:

[0073] The top of the pole is fixedly connected to the first frame 202, and the bottom of the pole has an upward lifting groove.

[0074] The lifting rod is located in the lifting groove and can move up and down along the lifting groove. The lifting rod is provided with scale lines 101 from top to bottom. The scale lines 101 are longitudinal scale lines 101, which are used to observe the adjustment height of the lifting rod.

[0075] A support plate 10 is disposed at the bottom of the lifting rod. The bottom surface of the support plate 10 is a support positioning surface 1001, which is used to support the graphite cast steel urban rail wheel rim.

[0076] A fourth locking part is provided on the rod body, which is used to lock the lifting rod and the rod body.

[0077] In this embodiment, the fourth locking nut can be a locking bolt. A bolt hole matching the fourth locking part is provided on the outer side of the rod body, and the bolt hole communicates with the lifting groove. The fourth locking part is threaded into the bolt hole. A longitudinal observation groove for observing the scale line 101 on the lifting rod is provided on the side of the rod body. When the lifting rod is raised to a suitable position, the lifting rod can be locked and fixed by tightening the fourth locking part and pressing it against the lifting rod. At this time, the lifting height of the lifting rod can also be measured by observing the reading of the scale line 101 on the lifting rod. With this design, the support rod 201 can realize the adjustment of the longitudinal support height, which is more flexible.

[0078] The beneficial effects of the technical solution of this utility model are:

[0079] This application provides a graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler. When measuring the outer inner diameter of the wheel rim, it is first supported on the outer surface of the wheel rim by a support mechanism to achieve stability. Then, the knife-edge measuring part 9 on one side of the fixed measuring claw 5 is gently placed and touches the outer inner diameter surface of the wheel rim to form a contact. The movable measuring claw auxiliary ruler 6 is moved laterally so that its knife-edge measuring part 9 also gently touches the other side of the outer inner diameter surface of the wheel rim. In this way, the knife-edge measuring part 9 on the fixed measuring claw 5 and the knife-edge measuring part 9 on the movable measuring claw auxiliary ruler 6 respectively abut against the opposite sides of the outer inner diameter surface of the wheel rim. Then, the movable measuring claw auxiliary ruler 6 is locked and fixed by the first locking part 602. The reading can be made on the scale line 101 on the main ruler 1 to measure the outer inner diameter of the wheel rim, ensuring the accuracy of the measurement result.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

[0081] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler, characterized in that, include: Main scale (1), with scale lines (101) provided on the main scale (1) along its length direction; Fixed measuring claw (5), the fixed measuring claw (5) is fixedly connected to the main scale (1), and the fixed measuring claw (5) is provided with a knife edge measuring part (9), the knife edge measuring part (9) is used to abut against the inner diameter surface of the outer side of the wheel rim; A support mechanism is provided on the main scale (1) for positioning and supporting on the outer surface of the graphite-type cast steel urban rail wheel rim; The movable measuring claw auxiliary ruler (6) is mounted on the main ruler (1) via a second frame (601). The second frame (601) is provided with a first locking part (602) for locking the movable measuring claw auxiliary ruler (6) and the main ruler (1). The movable measuring claw auxiliary ruler (6) is also provided with a knife edge measuring part (9), and the knife edge measuring part (9) on the movable measuring claw auxiliary ruler (6) and the knife edge measuring part (9) on the fixed measuring claw (5) are arranged opposite to each other to abut against the opposite sides of the inner diameter surface of the outer side of the wheel rim.

2. The graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler according to claim 1, characterized in that, The support mechanism includes a fixed support part (7) and a movable support part (2), which are respectively located at the left and right ends of the main ruler (1); The movable support part (2) includes a support rod (201) and a first frame (202) connected to each other. The first frame (202) is sleeved on the outside of the main ruler (1) and can move along the main ruler (1). A second locking part (203) is provided on the first frame (202). The locking part is used to lock the main ruler (1) and the first frame (202) together. The bottom of the fixed support part (7) and the bottom of the support rod (201) are used to support the outer surface of the graphite cast steel urban rail wheel rim.

3. The graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler according to claim 2, characterized in that, It also includes a fine-tuning frame (3), which is fitted on the outside of the main ruler (1) and can move along the main ruler (1). The fine-tuning frame (3) is provided with a third locking part (4) for locking the fine-tuning frame (3) and the main ruler (1) together. The movable measuring claw auxiliary scale (6) is located between the fine-tuning scale frame (3) and the movable support part (2) at the right end; A fine-tuning screw (8) is connected between the movable measuring claw scale (6) and the fine-tuning frame (3). The two frames are threadedly connected to the fine-tuning screw (8), which is used to fine-tune the position of the movable measuring claw scale (6).

4. The graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler according to claim 3, characterized in that, The fixed measuring claw (5) is located between the fixed support part (7) and the fine-tuning frame (3).

5. The graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler according to claim 2, characterized in that, Both the fixed support part (7) and the support rod (201) are provided with a support plate (10). The bottom surface of the support plate (10) is a support positioning surface (1001). The support positioning surface (1001) is used to support the outer surface of the graphite cast steel urban rail wheel rim.

6. The graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler according to claim 1, characterized in that, The fixed measuring claw (5) and the main scale (1) are an integral structure. The lower left part of the fixed measuring claw (5) is the knife edge measuring part (9), and the lower right part of the movable measuring claw auxiliary scale (6) is the knife edge measuring part (9).

7. The graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler according to claim 6, characterized in that, The knife edge measuring part (9) has a triangular prism structure, and the side edge of the knife edge measuring part (9) is used to abut against the outer inner diameter surface of the wheel rim.

8. The graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler according to claim 1, characterized in that, The first locking part (602) uses a locking bolt.

9. The graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler according to claim 2, characterized in that, The second locking part (203) uses a locking bolt.

10. The graphite-type cast steel urban rail vehicle wheel rim outer inner diameter measuring ruler according to claim 3, characterized in that, The third locking part (4) is a locking bolt.

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