Detection jig for spherical surface of end head of traction rod of locomotive

Abstract

The utility model provides a locomotive draw bar end spherical surface detection tool, comprising a positioning seat and a detection plate, the positioning seat comprises a substrate, one side of the substrate is provided with a U-shaped first opening, and two sides of the first opening naturally form two first vertical plates; a frame is fixedly mounted on the inner side of the first opening; a positioning frame is arranged in the middle of the two first vertical plates and comprises a transverse plate and a vertical plate; the transverse plate is fixedly connected with a frame fixed to the side of the base plate body, and the vertical plate is located in the middle of the two first vertical plates. A U-shaped second opening is formed in one side of the detection plate, second vertical plates are naturally formed on the two sides of the second opening, and the free ends of the second vertical plates are hinged to the frame through pin shafts; the inner side of the detection plate body between the two second vertical plates is provided with an arc-shaped surface which is designed according to the spherical surface profiling of the end of the draw bar. According to the utility model, the influence of human factors on the detection result is eliminated, the detection efficiency is also improved, and the detection precision can also be effectively ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway locomotives, and in particular relates to a detection jig for the spherical surface of a locomotive traction rod end. Background Art

[0002] The locomotive traction rod is a traction coupling device for railway vehicles. It has two ends with a terminal, one of which is connected to the traction equipment and the other is connected to the carriage. For the purpose of steering, the end of the terminal is a spherical structure (see Figure 3 ), a rotating sleeve is provided at one end where the traction equipment and the carriage are connected to the end head, the tail of the end head is embedded in the rotating sleeve and can be flexibly rotated within a certain angle in the rotating sleeve, so that the connection between the traction rod and the traction equipment and the carriage can be flexibly rotated.

[0003] The spherical end not only improves the vehicle's ability to negotiate curves but also enables the coupler to automatically reset. If there are bumps on the end of the end, the flexibility of the swivel sleeve will be reduced, affecting the smoothness of the towing equipment when turning the towing vehicle. Therefore, after the towbar is processed, the spherical end of the end should be inspected to determine if there are any bumps on the surface.

[0004] The current inspection method involves using a go / no-go gauge to measure the dimensions of the sphere's highest point and visually inspecting the surface for bumps. This method has the following drawbacks: it can only measure the dimensions of the highest point of the spherical surface at the end of the drawbar, but cannot measure other dimensions of that portion. Visual inspection requires careful manual observation of the spherical surface, which is not only time-consuming and labor-intensive, but also susceptible to human error. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a detection jig for the spherical surface of the end of a locomotive traction rod to solve the problems raised in the above background technology.

[0006] To this end, the present application provides the following technical solutions: a detection jig for the spherical surface of the end of a locomotive traction rod, comprising a positioning seat and a detection plate, the positioning seat comprising a base plate, a U-shaped first opening being provided on one side of the base plate, and two first vertical plates being naturally formed on both sides of the first opening; a frame being fixedly installed on the inner side of the first opening, and the front and rear sides of the frame extending to the outside of the base plate surface; a positioning frame being provided at a position between the two first vertical plates, the positioning frame comprising a horizontal plate and a vertical plate, and the horizontal plate and the vertical plate being fixedly connected to form a "⊥"-shaped structure; the horizontal plate is fixedly connected to the frame fixed to the side of the base plate body and arranged parallel to the base plate, and the vertical plate is located in the middle of the two first vertical plates; a U-shaped second opening being provided on one side of the detection plate, and second vertical plates being naturally formed on both sides of the second opening, and the free end of the second vertical plate being hingedly connected to the frame via a pin; an arcuate surface designed according to the shape of the spherical surface of the traction rod end is provided on the inner side of the detection plate body between the two second vertical plates, and the center of the arcuate surface is in the same plane as the plate surface of the vertical plate.

[0007] Furthermore, the vertical plate is provided with an inclined surface.

[0008] Furthermore, a strip-shaped hole is provided on the substrate.

[0009] The beneficial effect of the present invention is that the present invention utilizes the hook tail pin hole on the end of the traction rod, and realizes the fast and accurate positioning of the traction rod end by inserting the positioning frame arranged on the positioning seat into the hook tail pin hole; at the same time, an arc surface with a square design of the spherical surface of the traction rod end is provided on the detection plate hinged to the positioning seat. During detection, the arc surface is swept from the spherical surface of the traction rod end by rotating the detection plate. When the spherical surface is higher than the convex point whose protrusion height exceeds the allowable value, the detection plate is blocked and cannot slide over the protrusion, thereby judging whether the spherical surface of the traction rod end meets the requirements, and there is no need for the detection personnel to use the visual detection method. The structure is simple and easy to operate, which not only eliminates the influence of human factors on the detection results, but also improves the detection efficiency and effectively guarantees the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0011] Figure 1 It is a three-dimensional diagram of the present utility model.

[0012] Figure 2It is a three-dimensional diagram of the present invention from another angle.

[0013] Figure 3 It is a three-dimensional diagram of the locomotive traction bar.

[0014] Figure 4 This is a state demonstration diagram of the utility model when detecting the end of the traction rod.

[0015] In the figure: 1, positioning seat; 2, detection plate; 3, pin shaft; 1-3, detection fixture; 4, traction rod; 11, base plate; 12, frame; 13, positioning frame; 21, second vertical plate; 22, second opening; 23, arc-shaped surface; 41, end; 42, hook tail pin hole; 111, strip hole; 112, first vertical plate; 113, first opening; 131, inclined surface. DETAILED DESCRIPTION

[0016] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0019] The utility model provides a detection fixture 1-3 for the spherical surface of the end of a locomotive traction rod, such as Figure 1 、 2 As shown, it consists of two parts: a positioning seat 1 and a detection plate 2. The detection plate is hingedly connected to the positioning seat through a pin 3 in a rotatable manner. The specific structure is as follows:

[0020] The positioning seat includes a base plate 11 made of square steel plate, and a U-shaped first opening 113 is provided on one side of the base plate, and two first vertical plates 112 are naturally formed on both sides of the first opening. In order to improve the rigidity of the base plate and prevent it from being deformed during long-term use and affecting the detection accuracy, a frame 12 made of steel plate is welded and installed on the inner side of the first opening. The front and rear ends of the frame extend to the outside of the base plate surface. A positioning frame 13 is set at a position between the two first vertical plates. The positioning frame includes a horizontal plate and a vertical plate. The horizontal plate and the vertical plate are welded to form a "⊥"-shaped structure; the horizontal plate is fixedly connected to the frame fixed on the side of the base plate body and is arranged parallel to the base plate, and the vertical plate is located in the middle of the two first vertical plates.

[0021] The inspection plate is also made of a square steel plate. A U-shaped second opening 22 is defined on one side of the plate, with second vertical panels 21 formed on either side. The free ends of the second vertical panels are hingedly connected to the frame via pins. A curved surface 23 is located in the center of the inner side of the inspection plate between the two second vertical panels. This curved surface is designed to mimic the spherical surface of the end 41 of the drawbar 4, with its center aligned with the surface of the vertical panel.

[0022] When using, Figure 4 As shown, the traction rod is placed horizontally, and the positioning frame of the detection fixture is inserted into the hook tail pin hole 42 of the traction rod end. At the same time, the horizontal surface of the detection fixture frame is against the upper plane of the traction rod hook tail pin hole; then the detection plate is rotated, and the arc surface slides over the spherical surface of the end (Note: the line connecting the two pin shafts must pass through the axis of the hook tail pin hole; at the same time, in order to ensure that the center of the ball of the simulated rotation of the detection fixture can be more closely aligned with the center of the spherical surface of the traction rod end within the tolerance range, the horizontal dimension of the cross plate is set to The diameter of the hook tail pin hole is set to be 0.04-0.12mm smaller than the diameter of the hook tail pin hole, and the height from the upper end surface of the vertical plate to the center of the horizontal plate is less than the radius of the hook tail pin hole by 0.04-0.08mm. In this way, when the positioning frame is inserted into the hook tail pin hole, it can be effectively guaranteed that when the arc surface slides over the spherical surface of the end head, the distance between the arc surface and the spherical surface is always consistent). When there are raised bumps blocking the rotation of the detection plate, it means that there are bumps on the spherical surface that exceed the allowable value, and the traction rod can be judged as an unqualified product.

[0023] As a preferred embodiment, in order to prevent the contact area between the vertical plate and the wall of the hook tail pin hole from being too large and affecting the fitting accuracy, an inclined surface 131 is provided on the vertical plate.

[0024] As a preferred embodiment, a strip hole 111 is provided on the base plate for easy picking up. When the detection fixture needs to be moved, the detection plate is rotated to one side of the strip hole and fitted with the base plate. Then, the finger is passed through the strip hole and the second opening to pick up the fixture.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A jig for detecting the spherical surface of a locomotive traction rod end, characterized by: The cam is connected to the frame at the bottom of the frame, and the cam is connected to the frame at the bottom of the frame by a screw thread, so that the cam can be connected to the frame at the bottom of the frame by a screw thread, so that the cam can be connected to the frame at the bottom of the frame by a screw thread.

2. The spherical surface detection jig for the end of a locomotive drawbar according to claim 1, characterized in that: The vertical plate is provided with an inclined surface.

3. The spherical surface detection jig for the end of a locomotive drawbar according to claim 1, characterized in that: A strip-shaped hole is provided on the substrate.

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