Motor train traction motor sensor signal cable lock connector and traction motor sensor

Abstract

The patent application is bullet train traction motor sensor signal cable lock connector and traction motor sensor, wherein the bullet train traction motor sensor signal cable lock connector, wherein the connecting nut includes an outer connecting nut and an inner connecting nut, the outer connecting nut is bolted with the probe pipe, and the outer connecting nut is locked with the main lock washer between the probe pipe and the end face of the outer connecting nut; the inner connecting nut is sleeved on the rear side pipe body of the connecting pipe locking boss, is matched with the rear inner thread of the outer connecting nut, and the inner end face is matched with the locking boss to lock the connecting pipe. The traction motor sensor comprises a sensing probe, a sensing signal cable, a metal pipe and the bullet train traction motor sensor signal cable lock connector. The technical scheme solves the technical problem that the lock washer cannot be considered after being added, the metal connecting pipe is fastened, and the lock washer is locked and assembled, and completely meets the strict technical requirements of CHR5A bullet train set on the installation of the traction motor sensor.

Description

Technical Field

[0001] This patent application relates to an encapsulated sensor, and particularly to a sealing protection device for connecting and leading out a sensing probe and a sensing signal wire. Background Art

[0002] Taking the lead-out setting structure of the bearing and stator winding temperature sensors of the CHR5A EMU train as an example, the two bearing sensors need to pass through the hollow area from top to bottom of the motor end cover to reach the temperature measurement point. The technical requirement is that the part of the sensor signal cable passing through the hollow area must be sealed and protected by a metal protective tube made of stainless steel. This metal protective tube also plays the role of sealing connection with the rubber outer sheath of the signal cable and is connected to the probe protective tube of the sensing probe, achieving the functions of sealing protection and fixing the sensing probe.

[0003] The sealing connection between the probe protective tube of the sensing probe and the metal protective tube is completed by a connecting nut. As Figure 1 shown, the connecting tube of the metal protective tube, the front side tube body sealing sleeve of the locking boss is inserted into the bolt cavity of the probe protective tube. The connecting nut cooperates with the probe protective tube bolt. The locking platform of the connecting nut and the locking boss 11 of the connecting tube are locked and matched with each other, sealing and locking the probe protective tube and the connecting tube to complete the assembly. However, in the field of high-speed rail transit, the requirement for anti-loosening in the "eight-proofs" of equipment is extremely high, and it is required that anti-loosening measures must be added to all bolt parts in the assembly structure of the equipment. For the structure of this sensing assembly connection link, an anti-loosening washer 4 should be installed between the connecting nut A and the end face of the probe protective tube bolt 1. But after installation, as Figure 2 shown, although the thickness value of the anti-loosening washer is accurately considered based on the original process fitting structure, as a standard part, each washer has different thickness tolerances. In actual assembly applications, it will be difficult to lock the connecting tube when pressing the anti-loosening washer tightly. On the contrary, if the locking fit of the connecting tube is satisfied, it will be difficult to ensure the pressing fit of the anti-loosening washer. To solve this technical problem, only the metal components and the anti-loosening washer thickness in the composition need to have processing accuracy meeting the fitting requirements, but in reality, it is almost impossible to achieve. Even if there is, the probability is extremely low and it cannot be applied to mass production on a large scale. Moreover, as a detection device installed in the traction motor of the EMU train, there are strict technical requirements in this field, and the original metal connecting tube and the external dimensions of the sensing probe cannot be modified, which adds great technical difficulties to this technical research topic again. Summary of the Invention

[0004] The patent application aims to solve the technical problem that the actual cooperation can meet the technical requirements of the fastening of the metal protective tube connecting pipe and the locking of the lock washer after the lock washer is added under the technical requirements of not changing the structure and external size of the core component, including the structure and external size of the connecting pipe of the probe protective tube bolt and the metal protective tube.

[0005] The technical scheme of the motor train traction motor sensor signal cable protective tube lock connector provided by the patent application is as follows: a motor train traction motor sensor signal cable protective tube lock connector, comprising a probe protective tube bolt, a sensor signal cable metal protective tube, and a connecting nut, wherein the connecting nut comprises an outer connecting nut and an inner connecting nut, the metal protective tube is inserted into the cavity of the probe protective tube bolt and is in sealing cooperation with the front side pipe body of the locking boss of the connecting pipe, the front inner thread of the outer connecting nut is matched with the probe protective tube bolt to lock the main lock washer between the probe protective tube bolt and the end face of the outer connecting nut, the inner connecting nut is matched with the rear inner thread of the outer connecting nut, and the inner end face of the inner connecting nut is matched with the locking boss to lock the connecting pipe.

[0006] One preferred technical means of the above-mentioned overall technical scheme is that an inner lock washer is locked between the inner end face of the inner connecting nut and the locking boss of the connecting pipe.

[0007] One preferred technical means of the above-mentioned overall technical scheme is that the main lock washer is a disc-shaped lock washer.

[0008] One preferred technical means of the above-mentioned overall technical scheme is that the inner lock washer is a disc-shaped lock washer.

[0009] The patent application also provides a traction motor sensor with the above-mentioned motor train traction motor sensor signal cable protective tube lock connector, which comprises a sensing probe, a sensor signal cable, a metal protective tube of the sensor signal cable, and a motor train traction motor sensor signal cable protective tube lock connector for fixing and assembling the sensing probe on the metal protective tube.

[0010] The technical scheme of the motor train traction motor sensor signal cable protective tube lock connector and the traction motor sensor disclosed by the patent application solves the technical problem that the actual cooperation can meet the technical requirements of the fastening of the metal protective tube connecting pipe and the locking of the lock washer after the lock washer is added under the technical requirements of not changing the structure and external size of the core component, including the structure and external size of the connecting pipe of the probe protective tube bolt and the metal protective tube, and meets the strict technical requirements of the CHR5A motor train set train on the sealing and lock of the traction motor sensor. The structure can be applied to various tolerance precision lock washer standard parts, and meets the requirements of large-scale industrial production. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a sectional view of the existing structure.

[0012] Figure 2 is an assembly view of the existing structure directly added with the anti-loose washer.

[0013] Figure 3 is a sectional view of the assembly structure of an embodiment of the present patent application. DETAILED DESCRIPTION

[0014] The technical solutions of the present patent application will be described in detail below with specific embodiments.

[0015] The sensor for traction motor of the present patent application with the core structure of the anti-loose connector for the sensor signal cable of the motor car traction motor, is a temperature sensor applied to the bearings at both ends of the traction motor of the CHR5A motor car train and the stator winding. The temperature sensor of the two bearings can reach the bearing temperature measuring point by passing through the hollow area from the motor end cover downward, and the sensor signal cable 9 needs to be protected by the metal pipe 2 made of stainless steel, so the connector is needed for the sealed fixed connection of the metal pipe 2 of the sensor signal cable 9 and the sensor probe 10.

[0016] The sensor for traction motor of the present patent application, which consists of the sensor probe 10, the sensor signal cable 9 and its metal pipe 2, and the anti-loose connector for the sensor signal cable of the motor car traction motor for fixedly assembling the sensor probe 10 on the metal pipe 2.

[0017] Figure 3 A typical embodiment structure of the anti-loose connector for the sensor signal cable of the motor car traction motor of the present patent application is given.

[0018] The anti-loose connector for the sensor signal cable of the motor car traction motor is used for the fixed connection and sealed assembly of the metal pipe 2 of the sensor signal cable 9 and the sensor probe 10.

[0019] The anti-loose connector for the sensor signal cable of the motor car traction motor includes the probe pipe bolt 1, the metal pipe 2 of the sensor signal cable 9 and the connecting nut, wherein the connecting nut includes the outer connecting nut 6 and the inner connecting nut 7.

[0020] The metal protective pipe 2 is inserted into the pipe cavity of the probe protective pipe bolt 1 from the front side pipe body 21 of the locking boss 11 of the connecting pipe 3, and the outer surface is provided with a sealing ring 8 which is in sealing cooperation with the inner wall of the pipe cavity of the probe protective pipe bolt 1. The outer connecting nut 6 is in threaded cooperation with the probe protective pipe bolt 1 through the inner thread 6a of the front section, and the main anti-loose washer 4 is additionally arranged between the end surface of the probe protective pipe bolt 1 and the outer connecting nut 6. The inner connecting nut 7 is sleeved on the rear side pipe body of the locking boss 11 of the connecting pipe 3, and is screwed into the rear section inner thread 6b of the outer connecting nut 6 until the inner end surface of the inner connecting nut 7 is tightly locked on the locking boss 11, and is in cooperation with the outer connecting nut 6 to tightly lock the connecting pipe 3, so that the locking and fastening of the two connecting links of the main anti-loose washer 4 and the connecting pipe 3 of the metal protective pipe 2 are completed, and the sealed and fastening connection of the metal protective pipe 3 and the sensing probe 10 is realized.

[0021] In order to further improve the anti-loose technical effect and avoid the screwing off of the inner and outer connecting nuts due to high speed and strong vibration operation, the other inner anti-loose washer 5 is additionally arranged between the inner end surface of the inner connecting nut 7 and the locking boss 11 of the connecting pipe 3. On the basis of realizing the locking of the main anti-loose washer 4 and the fastening of the connecting pipe 3 of the metal protective pipe 2, the inner connecting nut 7 is ensured not to be loosened, and the sealed and fastening connection strength of the metal protective pipe 3 and the sensing probe 10 is strengthened.

[0022] In actual production, the main anti-loose washer 4 and the inner anti-loose washer 5 can be selected as disc-shaped anti-loose washers.

Claims

1. A bullet train traction motor sensor signal cable tube anti-loose connector, comprising a probe tube bolt (1), a sensor signal cable metal tube (2) and a connecting nut, the metal tube (2) is inserted into the lumen of the probe tube bolt (1) with the locking boss (11) of the connecting tube (3) in front of the tube body, and the two are sealed and matched. Characterized in that, the connecting nut comprises an outer connecting nut (6) and an inner connecting nut (7), the outer connecting nut (6) is matched with the probe tube bolt (1) through the inner thread (6a) in the front section, and the main anti-loose washer (4) between the probe tube bolt (1) and the end face of the outer connecting nut (6) is locked; the inner connecting nut (7) is sleeved on the rear tube body of the connecting tube locking boss (11) and is matched with the rear inner thread (6b) of the outer connecting nut (6), the inner end face of the inner connecting nut (7) acts on the locking boss (11) to lock the connecting tube (3); an inner anti-loose washer (5) is locked between the inner end face of the inner connecting nut (7) and the locking boss (11) of the connecting tube (3).

2. The motor vehicle traction motor sensor signal cable gland lock connector of claim 1, wherein, The main anti-loose washer (6) is a disc-shaped anti-loose washer.

3. The motor vehicle traction motor sensor signal cable gland lock connector of claim 1, wherein, The inner anti-loose washer (7) is a disc-shaped anti-loose washer.

4. A sensor for a traction motor having a traction motor sensor signal cable lock connector as claimed in any one of claims 1 to 3, characterised in that, It consists of a sensor probe (10), a sensor signal cable (9), a metal tube (2) thereof and a bullet train traction motor sensor signal cable tube anti-loose connector for fixing and assembling the sensor probe (10) on the metal tube (2).

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