A traction beam center pin sleeve positioning and marking tool

Abstract

The utility model relates to the technical field of urban rail vehicle maintenance, and specifically to a traction beam center pin sleeve positioning and marking tool, comprising a base, the base is provided with a groove matching the outer diameter of the center pin sleeve, the depth of the groove is 1 / 2 of the outer diameter of the center pin sleeve, one end of the base is provided with an end plate for abutting against the end face of the center pin sleeve, and the inner side surface of the end plate is provided with a pair of positioning pins located on the same horizontal plane and used to match with two positioning pin holes on the end face of the center pin sleeve. The tool helps to ensure that the two positioning pin holes of the center pin sleeve are on the same horizontal plane, reduce manual measurement, improve efficiency and reduce measurement and calculation errors.

Description

Technical Field

[0001] The utility model relates to the technical field of urban rail vehicle maintenance, in particular to a traction beam center pin sleeve positioning and marking tool. Background Art

[0002] Metro vehicle frame overhaul is for metro vehicles. After running for 5 years or 600,000 kilometers, their performance stability gradually begins to decline and the failure rate gradually increases, affecting the vehicle's online rate and operating reliability. The maintenance manual provided by the supplier clearly stipulates that relevant parts must be replaced after running for 5 years or 600,000 kilometers. It is necessary to disassemble, clean, inspect, detect defects, and repair important parts of the vehicle, and conduct comprehensive inspection, debugging and testing of the vehicle to restore the comprehensive performance and reliability of the vehicle to meet the requirements of the regulations and quality acceptance standards.

[0003] During the production process of subway vehicle frame overhaul, the old traction beam center pin sleeve needs to be removed and then the new traction beam center pin sleeve needs to be press-fitted. In order to ensure accurate positioning of the new center pin sleeve during press-fitting, the center line of the new center pin sleeve needs to be engraved.

[0004] At present, during the maintenance process, the center pin sleeve is placed on a V-shaped frame to limit the downward freedom of the center pin sleeve, and then measured and calculated by a height vernier caliper, taking 1 / 2 of the outer diameter of the center pin sleeve. This is prone to measurement and calculation errors, low efficiency, and cannot ensure that the two positioning pin holes of the center pin sleeve are on the same horizontal plane. Therefore, it is particularly important to design a traction beam center pin sleeve positioning and marking tooling. Utility Model Content

[0005] The utility model aims to provide a traction beam center pin sleeve positioning and marking tool, which helps to ensure that two positioning pin holes of the center pin sleeve are in the same horizontal plane, reduces manual measurement and improves efficiency.

[0006] The technical solution of the utility model is: a traction beam center pin sleeve positioning and marking tool, including a base, the base is provided with a groove matching the outer diameter size of the center pin sleeve, the depth of the groove is 1 / 2 of the outer diameter of the center pin sleeve, one end of the base is provided with an end plate for abutting the end face of the center pin sleeve, and the inner side surface of the end plate is provided with a pair of positioning pins located in the same horizontal plane and used to cooperate with two positioning pin holes on the end face of the center pin sleeve.

[0007] Furthermore, the groove is an arc-shaped groove with a semicircular radial cross section, and the arc opening width of the arc-shaped groove is slightly greater than or equal to the outer diameter of the center pin sleeve.

[0008] Furthermore, recesses are provided on the outside of both sides of the base.

[0009] Furthermore, the end plate protrudes upward and is higher than the base, and a hollow portion is provided on the end plate.

[0010] Furthermore, the base and the end plate are made of metal material.

[0011] Furthermore, a scribing needle is also provided.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The tooling uses locating pins for quick positioning to ensure that the two locating pin holes are on the same horizontal plane. The center pin sleeve is directly placed on the tooling. Once the locating pin is positioned, the center line can be obtained, replacing manual height vernier caliper measurement, improving efficiency and reducing measurement and calculation errors. The positioning is more accurate and the positioning accuracy is high.

[0014] 2. The tooling can limit the front, bottom, left and right freedom of the center pin sleeve, quickly position it, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the center pin sleeve;

[0016] Figure 2 This is a schematic diagram of the structure of the center pin sleeve positioning and marking tooling for the traction beam of the utility model;

[0017] Figure 3 It is a schematic diagram of the cooperation between the center pin sleeve positioning and marking tooling of the traction beam of the utility model and the center pin sleeve;

[0018] Figure 4 This is a cross-sectional view of the traction beam center pin sleeve positioning and marking tooling of the utility model Figure 1 ;

[0019] Figure 5 This is a cross-sectional view of the traction beam center pin sleeve positioning and marking tooling of the utility model Figure 2 ;

[0020] In the figure: 1-center pin sleeve 1a-positioning pin hole 10-base 11-groove 12-end plate 13-positioning pin 14-recess 15-hollow portion 20-scratching needle. DETAILED DESCRIPTION

[0021] In order to make the above features and advantages of the present invention more understandable, embodiments are given below with reference to the accompanying drawings for detailed description, but the present invention is not limited thereto.

[0022] refer to Figures 1 to 5

[0023] A tool for positioning and marking the center pin sleeve of a traction beam comprises a base 10, on which a groove 11 matching the outer diameter of the center pin sleeve is arranged, and the depth of the groove is 1 / 2 of the outer diameter of the center pin sleeve, and one end of the base is provided with an end plate 12 for abutting against the end face of the center pin sleeve 1, and the inner side surface of the end plate is provided with a pair of positioning pins 13 located on the same horizontal plane and used to match with two positioning pin holes 1a on the end face of the center pin sleeve 1. The tool is also equipped with a marking needle 20.

[0024] In this embodiment, in order to better cooperate with the center pin sleeve, the groove is an arc-shaped groove with a semicircular radial cross-section, and the arc opening width of the arc-shaped groove is slightly greater than or equal to the outer diameter of the center pin sleeve.

[0025] In this embodiment, recesses 14 are provided on the outside of both sides of the base, so that tooling can be carried out through the grooves on both sides.

[0026] In this embodiment, the end plate protrudes upward and is higher than the base, and a hollow portion 15 is provided on the end plate to reduce the mass of the end plate.

[0027] In this embodiment, the diameters of the pair of positioning pins are equal, and the center lines are located on the same horizontal plane.

[0028] In this embodiment, the base, positioning pins and end plates are made of metal materials.

[0029] When marking, place the center pin sleeve 1 in the groove 11 of the base 10, and match the positioning pin hole 1a of the center pin sleeve 1 with the positioning pin 13 of the tooling, and use a marking needle to mark the junction between the upper end of the base 10 and the center pin sleeve 1. The marked line is the center line. Figure 3 as shown in .

[0030] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the fixed connection to each other can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except where it is obviously impossible to use an one-piece molding process).

[0031] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.

[0032] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.

[0033] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A traction beam center pin sleeve positioning and marking tool, comprising a base, characterized in that: The base is provided with a groove matching the outer diameter of the center pin sleeve, and the depth of the groove is 1 / 2 of the outer diameter of the center pin sleeve. One end of the base is provided with an end plate for abutting against the end face of the center pin sleeve, and the inner side surface of the end plate is provided with a pair of locating pins located on the same horizontal plane and used to cooperate with the two locating pin holes on the end face of the center pin sleeve.

2. A traction beam center pin sleeve positioning and marking tool according to claim 1, characterized in that: The groove is an arc-shaped groove with a semicircular radial cross section, and the arc opening width of the arc-shaped groove is greater than or equal to the outer diameter of the center pin sleeve.

3. A traction beam center pin sleeve positioning and marking tool according to claim 1 or 2, characterized in that: Concave parts are arranged outside both sides of the base.

4. A traction beam center pin sleeve positioning and marking tool according to claim 1 or 2, characterized in that: The end plate protrudes upward and is higher than the base, and a hollow portion is arranged on the end plate.

5. The traction beam center pin sleeve positioning and marking tool according to claim 1, characterized in that: The base and the end plate are made of metal material.

6. The traction beam center pin sleeve positioning and marking tool according to claim 1, characterized in that: A scribing needle is also provided.

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