Corner type speed sensor for rail transit vehicle

Abstract

The utility model relates to the technical field of sensors, and discloses a corner-type speed sensor for a rail transit vehicle, which comprises a corner-type speed sensor probe body consisting of a flange-type shell, a middle metal piece, a corner piece, a tail-end metal piece and a cable, a middle metal part is arranged between the flange type shell and the corner part, the corner part is installed on the middle metal part in a pressing connection mode, the tail end of the corner part is provided with a tail end metal part through threads, and the corner speed sensor probe passes through a 90-degree corner of the middle metal part. A signal cable in a probe of the speed sensor can be led out in parallel to a flange mounting plane of the probe of the speed sensor, so that the speed sensor can be conveniently mounted in a narrow space position of a rail transit vehicle, and the corner piece can rotate by 360 degrees along the cylindrical center line of the flange type shell during crimping mounting. The crimping angle of the corner piece is set according to the requirement of a corresponding installation environment, and the wide requirement of rail transit vehicles for speed sensor installation is met.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a corner speed sensor for rail transit vehicles. Background Art

[0002] When subway vehicles are in operation, speed sensors are often used to monitor motor speed for better speed control. Sensors play a crucial role in vehicle operation control. Speed sensors are installed on the motor shaft end caps of subway vehicles to detect shaft speed. They are non-contact sensors, aligned with the gear being measured. The pulse frequency signal they generate is proportional to the speed, making it easy to calculate the motor shaft speed and, therefore, the train's operating speed.

[0003] The existing corner velocity sensor probe cannot achieve rotational positioning, and the crimping angle of the corner piece cannot be set according to the requirements of the corresponding installation environment to meet the wide range of needs for speed sensor installation in rail transit vehicles. Utility Model Content

[0004] The existing corner velocity sensor probe cannot achieve rotational positioning, and the crimping angle of the corner piece cannot be set according to the requirements of the corresponding installation environment, so as to meet the wide demand for speed sensor installation in rail transit vehicles.

[0005] The utility model provides a corner velocity sensor for rail transit vehicles, comprising a corner velocity sensor probe body, wherein the corner velocity sensor probe body is composed of a flange housing, an intermediate metal part, a corner part, a tail end metal part and a cable, wherein an intermediate metal part is provided between the flange housing and the corner part, and the corner part is a tubular metal part with a right-angled shape and a corner angle of 90°, which is mounted on the intermediate metal part by crimping, and the tail end of the corner part is threadedly mounted with the tail end metal part.

[0006] As a further solution of the present invention: the flange-type housing accommodates electronic components inside, and is fixed on the motor shaft end cover of the rail transit vehicle through two mounting holes on the flange and positioned and installed through the bottom locating pins.

[0007] As a further solution of the present invention: the upper end of the intermediate metal piece is connected to the corner piece by interference fit.

[0008] As a further solution of the present invention: the lower end of the intermediate metal piece is connected to the flange-type housing via threads.

[0009] The utility model provides a corner speed sensor for rail transit vehicles, which has the following beneficial effects:

[0010] The corner velocity sensor probe has a 90° corner through the intermediate metal component, which allows the signal cable in the speed sensor probe to be led out parallel to the flange mounting plane of the speed sensor probe, making it easy to install the speed sensor in the narrow space of a rail transit vehicle. Moreover, during crimping installation, the corner piece can be rotated 360° along the cylindrical centerline of the flange housing. The crimping angle of the corner piece can be set according to the requirements of the corresponding installation environment, meeting the wide range of speed sensor installation needs of rail transit vehicles. At the same time, the crimping installation method has high interference fit precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of the utility model.

[0012] In the figure: 10, corner velocity sensor probe body; 101, flange housing; 102, middle metal part; 103, corner part; 104, tail end metal part; 105, cable. DETAILED DESCRIPTION

[0013] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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.

[0014] See also Figure 1The utility model provides a technical solution: a corner velocity sensor for rail transit vehicles, including a corner velocity sensor probe body 10, the corner velocity sensor probe body 10 is composed of a flange shell 101, an intermediate metal part 102, a corner part 103, a tail end metal part 104 and a cable 105. The flange shell 101 contains electronic components inside, and is fixed to the motor shaft end cover of the rail transit vehicle through two mounting holes on the flange and positioned and installed through the bottom locating pin. An intermediate metal part 102 is provided between the flange shell 101 and the corner part 103. The lower end of the intermediate metal part 102 is connected to the flange shell 101 by a thread, and the upper end of the intermediate metal part 102 is connected to the corner part 10 3 are connected by interference fit. The corner piece 103 is a tubular metal part with a right-angled shape and a corner angle of 90°. It is installed on the intermediate metal part 102 by crimping. This installation method can adjust the direction of the wire outlet hole of the corner piece 103 to control the direction of the cable. When crimped, the corner piece 103 can rotate 360° along the cylindrical center line of the flange housing 101. The crimping angle of the corner piece can be set according to the requirements of the corresponding installation environment to meet the wide range of speed sensor installation needs of rail transit vehicles. The tail end of the corner piece 103 is threadedly installed with a tail end metal piece 104. The tail end metal piece 104 locks the cable 105 of the speed sensor and completes the sealing of the speed sensor probe at the same time.

[0015] The corner velocity sensor probe has a 90° corner through the intermediate metal component, which allows the signal cable in the speed sensor probe to be led out parallel to the flange mounting plane of the speed sensor probe, making it easy to install the speed sensor in the narrow space of a rail transit vehicle. Moreover, during crimping installation, the corner piece can be rotated 360° along the cylindrical centerline of the flange housing. The crimping angle of the corner piece can be set according to the requirements of the corresponding installation environment, meeting the wide range of speed sensor installation needs of rail transit vehicles. At the same time, the crimping installation method has high interference fit precision.

[0016] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corner velocity sensor for a rail transit vehicle, comprising a corner velocity sensor probe body (10), characterized in that: The angular velocity sensor probe body (10) is composed of a flange housing (101), an intermediate metal part (102), a corner part (103), a tail metal part (104) and a cable (105). An intermediate metal part (102) is provided between the flange housing (101) and the corner part (103). The corner part (103) is a tubular metal part with a right-angled shape and a corner angle of 90°. It is installed on the intermediate metal part (102) by crimping. The tail end of the corner part (103) is screwed with the tail metal part (104).

2. A corner velocity sensor for rail transit vehicles according to claim 1, characterized in that: The flange-type housing (101) contains electronic components inside and is fixed to the motor shaft end cover of the rail transit vehicle through two mounting holes on the flange and positioned and installed through the bottom positioning pin.

3. The corner velocity sensor for rail transit vehicles according to claim 1, characterized in that: The upper end of the intermediate metal piece (102) and the corner piece (103) are connected via interference fit.

4. The corner velocity sensor for rail transit vehicles according to claim 1, characterized in that: The lower end of the intermediate metal part (102) is connected to the flange-type housing (101) via a thread.

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