CN215639142U - Tool for measuring spring joist of bogie - Google Patents
Tool for measuring spring joist of bogie Download PDFInfo
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- CN215639142U CN215639142U CN202121910434.7U CN202121910434U CN215639142U CN 215639142 U CN215639142 U CN 215639142U CN 202121910434 U CN202121910434 U CN 202121910434U CN 215639142 U CN215639142 U CN 215639142U
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Abstract
The utility model discloses a bogie spring joist measuring tool, which belongs to the technical field of rail transit vehicle bogie detection and is provided with at least two measuring bodies; one end of the measuring body is provided with a matching part in transition fit with the workpiece mounting hole, and the other end of the measuring body is provided with a measuring structure; the utility model can directly and accurately measure the positioning size of the spring joist hanging shaft mounting hole, has the advantages of simple structure, convenient measurement, improvement on production efficiency, accurate positioning and high measurement precision, and is beneficial to reducing the failure rate of central suspension assembly of a bogie.
Description
Technical Field
The utility model relates to the technical field of rail transit vehicle bogie detection, in particular to a bogie spring joist measurement tool.
Background
The bogie is an important component of a rail transit vehicle, wherein the 209 bogie comprises a spring joist, the projection of the spring joist on the horizontal plane is similar to a cuboid structure, the middle part of the spring joist is provided with an upward convex arc, the mounting surfaces at two ends of the spring joist are lower than the height of the arc, four corners of the cuboid are respectively provided with a hanging shaft mounting hole, the hanging shaft mounting holes are round holes, as shown in figure 1, when the spring joist is inspected, the inspection items mainly comprise A, B items (namely the distance between the hanging shaft mounting holes and the diagonal dimension), wherein the tolerance of the item A is +/-2 mm, and the tolerance of the item B is not more than 2 mm;
at present, due to the particularity of the spring joist structure, in the process of size measurement, the traditional measurement mode is indirect measurement by using detection tools such as a square rule and a steel plate rule, the measurement position cannot be guaranteed to be the center of a hole, the measured data is inaccurate, and the subsequent installation and application performance of the spring joist are affected.
Therefore, in order to solve the problems, the utility model provides the bogie spring joist measuring tool which has the advantages of simple structure, convenience in measurement, accuracy in positioning and high precision, and can directly and accurately measure the distance between the mounting holes of the spring joist hanging shafts and the diagonal dimension in the dimension measuring process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a bogie spring joist measuring tool which is simple in structure, convenient to measure, accurate in positioning and high in precision, and can be used for directly and accurately measuring the distance and the diagonal size of mounting holes of a spring joist hanging shaft in the size measuring process;
in order to achieve the above purpose, the utility model provides the following technical scheme:
the utility model discloses a bogie spring joist measuring tool, which comprises:
at least two measuring bodies;
one end of the measuring body is provided with a matching part in transition fit with the workpiece mounting hole, and the other end of the measuring body is provided with a measuring structure;
the tail end of the measuring structure is provided with a positioning base point coinciding with the circle center of the workpiece mounting hole, and the measuring structure vertically extends upwards so that the positioning base point protrudes out of the outline of the workpiece.
Further, the measuring structure includes a body and a measuring portion formed at a distal end of the body;
the measuring part is of a cone structure, the vertex of the cone structure coincides with the axis of the body, and the vertex is the positioning base point.
Further, the measuring body is a cylindrical pin;
the cylindrical pin comprises the matching part and the measuring structure which is coaxial with the matching part;
a transition section is formed between the mating portion and the measurement structure.
Further, the transition section has a diameter larger than the mating portion.
Furthermore, the transition section is far away from the measuring structure end and is provided with a positioning surface perpendicular to the central axis of the workpiece mounting hole, an extension section extending towards the workpiece mounting hole is formed on the positioning surface, and the extension section is the matching part.
Further, the measuring bodies include four.
In the technical scheme, compared with the prior art, the bogie spring joist measuring tool provided by the utility model has the advantages that the measuring body is provided with the matching part and the measuring structure, the matching part is in transition fit with the workpiece hanging shaft mounting hole, and the positioning base point of the measuring structure is used for leading the circle center of the workpiece hanging shaft mounting hole out of the outline of the workpiece, so that the sizes of two adjacent positioning base points are directly measured on a space plane higher than the vertex of the workpiece to obtain the positioning sizes of the two mounting holes of the workpiece, and the tool has the beneficial effects;
1) the structure is simple, the measurement is convenient, and the production efficiency is improved;
2) the positioning is accurate, and the measurement precision is high;
3) the positioning size of the mounting hole of the suspension shaft of the spring joist is effectively ensured through the tool, so that the mounting requirement of the suspension shaft is met, the failure rate of central suspension assembly of the bogie is reduced, and the running safety of a vehicle is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic diagram of a prior art spring joist;
FIG. 2 is an axonometric view of the measurement state of the bogie spring joist measurement tool disclosed by the utility model;
FIG. 3 is a front view of the bogie spring joist measurement tool disclosed by the utility model in a measurement state;
FIG. 4 is an isometric view of a truck spring joist measurement tool measurement body of the present disclosure;
fig. 5 is a front view of the bogie spring joist measurement tool measuring body disclosed by the utility model.
Description of reference numerals:
10. a measuring body; 11. a fitting portion; 12. a transition section; 13. a measurement structure; 14. a measuring section; 15. positioning a base point; 16. positioning the surface;
100. and (5) a workpiece.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 2-3;
utility model bogie spring joist measures frock, include:
at least two measuring bodies 10;
one end of the measuring body 10 is provided with a matching part 11 which is in transition fit with the mounting hole of the workpiece 100;
the other end of the measuring body 10 is provided with a measuring structure 13;
the end of the measuring structure 13 is formed with a positioning base point 15 coinciding with the center of the mounting hole of the workpiece 100, and the measuring structure 13 extends vertically upwards so that the positioning base point 15 protrudes outside the outline of the outer shape of the workpiece 100.
Specifically, the workpiece 100 measured by the measuring body 10 is a spring joist in the prior art, and certainly, a plurality of measuring bodies 10 can be used in combination to measure a workpiece with a structure similar to that of the workpiece 100, in this embodiment, in order to improve the measurement efficiency, preferably, the number of the measuring bodies 10 is four, and is matched with the number of the hanging shaft mounting holes of the workpiece 100, and the measuring bodies 10 are placed in each hanging shaft mounting hole of the workpiece 100;
referring to fig. 4-5, one end of the measuring body 10 is provided with a matching part 11, the other end is provided with a measuring structure 13, during measurement, the measuring body 10 is inserted into a workpiece mounting hole through the matching part 11, the matching part 11 is in transition fit with the workpiece 100 mounting hole, and the structure ensures the coaxiality of the measuring body 10 and the workpiece 100 mounting hole through the matching part 11;
the positioning base point 15 formed at the tail end of the measuring structure 13 is coincided with the circle center of the mounting hole of the workpiece 100, the measuring structure 13 vertically extends upwards, the positioning base point 15 is sent to the position protruding out of the outline of the shape of the workpiece 100 through the measuring structure 13, namely, the circle center of the mounting hole of the workpiece 100 is led out to the positioning base point 15, so that the sizes of the two adjacent positioning base points 15 are directly measured on a space plane higher than the top point of the workpiece 100 to obtain the positioning sizes of the two mounting holes of the workpiece 100, the structure is simple, the measurement is convenient, the positioning is accurate, and the measurement accuracy is greatly improved;
referring to fig. 4, in order to ensure that the positioning base point 15 is overlapped on the vertical central axis of the matching part 11 and ensure accurate positioning, it is preferable that the measuring structure 13 comprises a body and a measuring part 14 formed at the end of the body; the measuring part 14 is in a cone structure, and the vertex of the cone structure coincides with the axis of the body, and the vertex is a positioning base point 15.
Referring to fig. 4 and 5, preferably, the measuring body 10 is a cylindrical pin; specifically, the cylindrical pin is a pin shaft with a stepped structure, and comprises a matching part 11 and a measuring structure 13 which is coaxial with the matching part 11; a transition 12 is formed between the mating portion 11 and the measuring structure 13. Preferably, the height of the matching part 11 is not less than 20mm, and the diameter of the transition section 12 is larger than that of the matching part 11;
referring to fig. 5, in order to ensure that the plurality of measuring bodies 10 are consistent in height, the plurality of positioning base points 15 are located in the same spatial plane, preferably, the end of the transition section 12 away from the measuring structure 13 is provided with a positioning surface 16 perpendicular to the central axis of the mounting hole of the workpiece 100, and the positioning surface 16 is formed with an extension section extending towards the mounting hole of the workpiece 100, wherein the extension section is the matching part 11. The structure is attached to the upper surface of the mounting hole of the workpiece 100 through the positioning surface 16, during measurement, the matching part 11 extends into the mounting hole of the workpiece 100, the positioning surface 16 is in surface contact with the workpiece 100, and therefore the positioning base points 15 of the plurality of measuring bodies 10 are ensured to be at the same height by taking the upper surface of the mounting hole of the workpiece 100 as a reference, and the measurement precision of the measurement work is further improved;
in the technical scheme, the bogie spring joist measuring tool provided by the utility model is provided;
the measuring method comprises the following steps: placing the measuring bodies 10 in the mounting holes of the workpiece 100, and directly obtaining the positioning size of the mounting holes of the workpiece 100 by measuring data between the positioning base points 15 of the plurality of measuring bodies 10;
in the technical scheme, compared with the prior art, the bogie spring joist measuring tool provided by the utility model has the advantages that the measuring body is provided with the matching part and the measuring structure, the matching part is in transition fit with the workpiece hanging shaft mounting hole, and the positioning base point of the measuring structure is used for leading the circle center of the workpiece hanging shaft mounting hole out of the outline of the workpiece, so that the sizes of two adjacent positioning base points are directly measured on a space plane higher than the vertex of the workpiece to obtain the positioning sizes of the two mounting holes of the workpiece, and the tool has the beneficial effects;
1) the structure is simple, the measurement is convenient, and the production efficiency is improved;
2) the positioning is accurate, and the measurement precision is high;
3) the positioning size of the mounting hole of the suspension shaft of the spring joist is effectively ensured through the tool, so that the mounting requirement of the suspension shaft is met, the failure rate of central suspension assembly of the bogie is reduced, and the running safety of a vehicle is improved.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.
Claims (6)
1. Frock is measured to bogie spring joist, its characterized in that includes:
at least two measuring bodies (10);
one end of the measuring body (10) is provided with a matching part (11) which is in transition fit with the mounting hole of the workpiece (100);
the other end of the measuring body (10) is provided with a measuring structure (13);
the tail end of the measuring structure (13) is provided with a positioning base point (15) coinciding with the center of a mounting hole of the workpiece (100), and the measuring structure (13) vertically extends upwards so that the positioning base point (15) protrudes out of the outline of the outer shape of the workpiece (100).
2. The bogie spring joist measurement tool of claim 1, wherein;
the measuring structure (13) comprises a body and a measuring part (14) formed at the end of the body;
the measuring part (14) is of a cone structure, the vertex of the cone structure coincides with the axis of the body, and the vertex is the positioning base point (15).
3. The bogie spring joist measurement tool of claim 2, wherein;
the measuring body (10) is a cylindrical pin;
the cylindrical pin comprises the fitting portion (11) and the measuring structure (13) coaxial with the fitting portion (11);
a transition section (12) is formed between the fitting section (11) and the measuring structure (13).
4. The bogie spring joist measurement tool of claim 3, wherein;
the diameter of the transition section (12) is larger than the fitting part (11).
5. The bogie spring joist measurement tool of claim 4, wherein;
the end, far away from the measuring structure (13), of the transition section (12) is provided with a positioning surface (16) perpendicular to the central axis of the mounting hole of the workpiece (100), an extension section extending towards the mounting hole of the workpiece (100) is formed on the positioning surface (16), and the extension section is the matching part (11).
6. The bogie spring joist measurement tool according to any one of claims 1 to 5, wherein;
the measuring body (10) comprises four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121910434.7U CN215639142U (en) | 2021-08-16 | 2021-08-16 | Tool for measuring spring joist of bogie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121910434.7U CN215639142U (en) | 2021-08-16 | 2021-08-16 | Tool for measuring spring joist of bogie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215639142U true CN215639142U (en) | 2022-01-25 |
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ID=79898171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121910434.7U Active CN215639142U (en) | 2021-08-16 | 2021-08-16 | Tool for measuring spring joist of bogie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215639142U (en) |
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2021
- 2021-08-16 CN CN202121910434.7U patent/CN215639142U/en active Active
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