Cross shaft drive assembly for train axle end speed sensor speed measurement

Abstract

This utility model discloses a cross-shaft drive assembly for train axle-end speed sensor speed measurement, belonging to the field of train speed measurement technology. It includes: a drive disc and a tongue-shaft plate; the drive disc and the tongue-shaft plate are connected; the drive disc has a mounting groove; the tongue-shaft plate is a cross-shaped plate, and the mounting groove is a cross-shaped groove that matches the tongue-shaft plate; when the tongue-shaft plate is inserted into the mounting groove, the side wall of the tongue-shaft plate is opposite to the inner side wall of the mounting groove; the cross-shaped tongue-shaft plate and the matching cross-shaped mounting groove are used to replace the traditional method of fitting the tongue-shaft with the waist-shaped hole of the drive disc. The transverse width and longitudinal width of the cross-shaped mounting groove are equal, and it precisely matches the thickness of the tongue-shaft plate. By fitting the long side side instead of the short side and the arc, the drive clearance is significantly reduced, effectively avoiding speed sensor output signal errors caused by excessive clearance, and effectively improving speed measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of train speed measurement technology, and in particular to a cross shaft drive assembly for train axle end speed sensor speed measurement. Background Technology

[0002] In the speed measurement drive structure of the train axle end speed sensor, the existing technology generally adopts a drive method that combines a tongue shaft and a drive disc. In this method, the drive tongue shaft and the speed sensor are designed as an integral part, while the drive disc is installed outside the axle pressure plate or is integrally formed with the pressure plate. When the train is moving, the axle rotates, which drives the drive disc to rotate, and then transmits the rotational motion to the speed sensor through the drive tongue shaft to achieve speed measurement.

[0003] However, the existing tongue shaft drive method has significant shortcomings: Firstly, the drive clearance is relatively large, especially in the fit between the short side of the tongue shaft and the arc of the waist-shaped hole in the drive disc. Since the speed sensor relies on the rotational position change of the detection shaft to measure speed, excessive drive clearance will directly affect the accuracy of the output signal, leading to a decrease in speed measurement accuracy. Secondly, after long-term use, the four edges of the tongue shaft are prone to wear, further increasing the clearance between the short side of the tongue shaft and the arc of the waist-shaped hole in the drive disc, making it easy for relative sliding to occur between the drive shaft and the drive disc along the long side. Especially when the train passes through complex sections such as switches, intersections, and curves, the detection signal is prone to fluctuations, which may lead to unstable output signals. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art, and to propose a cross shaft drive assembly for speed measurement of train axle end speed sensors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cross shaft drive assembly for speed measurement using a train axle-end speed sensor includes:

[0007] The drive disc and the tongue plate are connected.

[0008] The drive disk has a mounting slot;

[0009] The tongue plate is a cross plate, and the mounting groove is a cross groove that matches the tongue plate;

[0010] When the tongue plate is inserted into the mounting groove, the side wall of the tongue plate is opposite to the inner side wall of the mounting groove.

[0011] Preferably, a mounting plate is fixedly connected to the tongue shaft plate, and a first mounting hole is provided on the mounting plate.

[0012] Furthermore, a second mounting hole is provided on the drive disk.

[0013] Preferably, the tongue plate has an installation arc surface on its side wall.

[0014] Preferably, the mounting groove has a clearance arc surface.

[0015] Preferably, the thickness of the tongue plate is 6.9-7.1 mm, and the length of the tongue plate is 36.5-38.5 mm.

[0016] Preferably, the thickness of the mounting plate is 3.9-4.1 mm.

[0017] Compared with the prior art, this utility model provides a cross shaft drive assembly for speed measurement of train axle-end speed sensors, which has the following advantages:

[0018] 1. This utility model adopts a cross-shaped tongue plate and a matching cross-shaped mounting groove to replace the traditional method of fitting the tongue shaft with the waist-shaped hole of the drive disc. The horizontal width and vertical width of the cross-shaped mounting groove are equal, and it precisely matches the thickness of the tongue plate. By fitting the long side side, instead of the short side and the arc, the drive clearance is greatly reduced, effectively avoiding the speed sensor output signal error caused by excessive clearance, and effectively improving the speed measurement accuracy.

[0019] 2. In this utility model, after the tongue plate is inserted into the mounting groove, its four side walls contact the inner side wall of the mounting groove, which disperses the contact stress. At the same time, the mounting arc surface of the tongue plate matches the clearance arc surface of the mounting groove, which reduces frictional loss and reduces the degree of wear during long-term operation, thus solving the problem of easy wear on the four edges of the traditional tongue plate.

[0020] 3. Even if the tongue plate or mounting groove of this utility model experiences slight wear after long-term use, the long side of the cross-shaped structure can still maintain stable fitting accuracy, avoiding the problem of sliding along the long side due to wear in traditional structures; especially when trains pass through complex sections such as switches, intersections, and curves, it can effectively reduce the fluctuation of detection signals and ensure stable output signals. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the cross shaft drive assembly for measuring train axle end speed sensors proposed in this utility model.

[0022] Figure 2 This is an exploded view of the cross shaft drive assembly for speed measurement using a train axle-end speed sensor proposed in this utility model.

[0023] Figure 3 This is a top view of the cross shaft drive assembly for measuring train axle end speed sensor proposed in this utility model.

[0024] Figure 4This is a schematic diagram of the tongue plate in the cross shaft drive assembly for speed measurement of the train axle end speed sensor proposed in this utility model.

[0025] In the figure: 1. Drive plate; 101. Second mounting hole; 102. Mounting groove; 1021. Relief arc surface; 2. Tongue plate; 201. Mounting plate; 2011. First mounting hole; 202. Mounting arc surface. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example:

[0028] Reference Figures 1-4 A cross shaft drive assembly for speed measurement using a train axle-end speed sensor includes:

[0029] Drive disk 1 and tongue shaft plate 2; drive disk 1 and tongue shaft plate 2 are connected;

[0030] The drive disk 1 has an installation slot 102;

[0031] The tongue plate 2 is a cross plate, and the mounting groove 102 is a cross groove that matches the tongue plate 2;

[0032] When the tongue plate 2 is inserted into the mounting groove 102, the side wall of the tongue plate 2 is opposite to the inner side wall of the mounting groove 102.

[0033] Reference Figure 2 , Figure 3 The horizontal width of the cross mounting groove 102 is equal to its vertical width.

[0034] A mounting plate 201 is fixedly connected to the tongue plate 2, and a first mounting hole 2011 is provided on the mounting plate 201.

[0035] The drive disk 1 has a second mounting hole 101.

[0036] An installation arc surface 202 is provided on the side wall of the tongue plate 2.

[0037] The mounting slot 102 has a clearance arc surface 1021.

[0038] Reference Figures 1-3During installation and use, the drive plate 1 is fixed to the outside of the train axle pressure plate through the second mounting hole 101, ensuring that the drive plate 1 is securely installed, with its central cross-shaped mounting groove 102 facing the speed sensor side. The tongue plate 2 is fixedly connected to the rotating shaft of the speed sensor through the first mounting hole 2011 on the mounting plate 201, making the tongue plate 2 and the speed sensor an integral unit, ensuring that the cross structure axis of the tongue plate 2 is aligned with the rotating shaft axis of the speed sensor. The tongue plate 2 with the speed sensor assembled is aligned with the cross-shaped mounting groove 102 of the drive plate 1 and inserted axially into the mounting groove 102, ensuring that the side wall of the tongue plate 2 is opposite to the inner side wall of the mounting groove 102, and that the mounting arc surface 202 on the tongue plate 2 corresponds to the clearance arc surface 1021 on the mounting groove 102. After adjusting the position of the speed sensor and confirming that the tongue plate 2 is not loose in the mounting groove 102, its position is fixed by the speed sensor's own mounting structure, completing the overall assembly.

[0039] This invention replaces the traditional method of using a cross-shaped tongue plate 2 and a cross-shaped mounting groove 102 to fit together, and the cross-shaped mounting groove 102 has the same horizontal and vertical width, which precisely matches the thickness of the tongue plate 2. By using the side of the long side to fit together instead of the short side to fit the arc, the drive clearance is greatly reduced, avoiding the speed sensor output signal error caused by excessive clearance, and effectively improving the speed measurement accuracy.

[0040] Meanwhile, after the tongue plate 2 of this utility model is inserted into the mounting groove 102, its four side walls contact the inner side wall of the mounting groove 102, dispersing the contact stress. At the same time, the mounting arc surface 202 of the tongue plate 2 and the clearance arc surface 1021 of the mounting groove 102 reduce frictional loss and reduce the degree of wear during long-term operation, solving the problem of easy wear on the four edges of the traditional tongue plate. Even if the tongue plate 2 or the mounting groove 102 shows slight wear after long-term use, the mating characteristics of the long side of the cross-shaped structure can still maintain the mating accuracy, avoiding the problem of sliding along the long side due to wear in the traditional structure. Especially when the train passes through complex sections such as turnouts, intersections, and curves, it can effectively reduce the fluctuation of detection signals and ensure the stability of the output signal.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cross shaft drive assembly for speed measurement using a train axle-end speed sensor, characterized in that, include: A drive disc (1) and a tongue plate (2); the drive disc (1) and the tongue plate (2) are connected; The drive disk (1) has an installation slot (102); The tongue plate (2) is a cross plate, and the mounting groove (102) is a cross groove that matches the tongue plate (2); When the tongue plate (2) is inserted into the mounting groove (102), the side wall of the tongue plate (2) is opposite to the inner side wall of the mounting groove (102).

2. The cross shaft drive assembly for speed measurement of train axle-end speed sensor according to claim 1, characterized in that, A mounting plate (201) is fixedly connected to the tongue plate (2), and a first mounting hole (2011) is provided on the mounting plate (201).

3. The cross shaft drive assembly for speed measurement of train axle-end speed sensor according to claim 1, characterized in that, The drive disk (1) has a second mounting hole (101).

4. The cross shaft drive assembly for speed measurement of train axle end speed sensor according to claim 1, characterized in that, The tongue plate (2) has an installation arc surface (202) on its side wall.

5. The cross shaft drive assembly for speed measurement of train axle-end speed sensor according to claim 1, characterized in that... The mounting groove (102) is provided with a clearance arc surface (1021).

6. The cross shaft drive assembly for speed measurement of train axle-end speed sensor according to claim 1, characterized in that, The thickness of the tongue plate (2) is 6.9-7.1 mm, and the length of the tongue plate (2) is 36.5-38.5 mm.

7. The cross shaft drive assembly for speed measurement of train axle-end speed sensor according to claim 2, characterized in that, The thickness of the mounting plate (201) is 3.9-4.1 mm.

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