Displacement sensor for switch machine turnout gap monitoring system

Abstract

The utility model provides a displacement sensor for a switch gap monitoring system of a switch machine, which comprises a sensor shell and two magnetic scales, the two magnetic scales are respectively fixed on an actuating rod and an indicating rod of the switch machine, two read heads are arranged below the sensor shell side by side, a cover plate is arranged above the sensor shell, and the two read heads are fixed on the sensor shell. The cover plate is fixed on the shell through bolts, and two mounting holes are formed in one end of the cover plate; when the action rod and the indication rod of the switch machine move, the two magnetic rulers are respectively driven to move together, the two magnetic reading heads respectively read the moving distances of the magnetic rulers on the action rod and the indication rod at the moment, and the distances are equal to the moving distances of the action rod and the indication rod respectively, so that the real-time positions of the action rod and the indication rod are obtained. The device is used for detecting the displacement strokes of the action rod and the indication rod on line in the turnout switching process of the switch machine, monitoring the working condition of a turnout gap system of the switch machine in real time, and ensuring safe track changing and running of a train track.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway signal equipment technical field especially, and relates to a displacement sensor for switch machine turnout gap monitoring system. BACKGROUND

[0002] With switch machine is the core equipment of railway turnout conversion, its action lever and indicating rod displacement stroke directly influences the accurate positioning of turnout. The traditional monitoring sensor cannot detect the displacement of the action lever and the indicating rod at the same time, thereby affecting the safety of train track switching and driving.

[0003] Therefore, a displacement sensor for switch machine turnout gap monitoring system is needed to improve monitoring reliability and adaptability. SUMMARY

[0004] In view of this, the utility model proposes a displacement sensor for switch machine turnout gap monitoring system,

[0005] A displacement sensor for switch machine turnout gap monitoring system, comprising a sensor housing and two magnetic scales, two magnetic scales are fixed on the action lever and indicating rod of switch machine respectively, two magnetic heads are arranged side by side below the sensor housing, a cover plate is arranged above the sensor housing, the cover plate is fixed on the housing by bolts, one end of the cover plate is provided with two mounting holes;

[0006] The sensor housing is internally filled with glue to seal the signal processing circuit board, the circuit board is connected to the wire, the wire extends from the top of the housing, and the signals collected by the two magnetic heads are output to the external collection extension after passing through the signal processing circuit board.

[0007] Further, the two magnetic heads are side by side at the same end, the sensor is installed in the switch machine through the two mounting holes on the cover plate, and the one end of the magnetic head is close to the two magnetic scales when the sensor is installed.

[0008] Further, the two magnetic scales are first fixed on the stainless steel bottom plate to ensure the straightness and levelness of the magnetic scale, and then are fixed on the action lever and indicating rod respectively to provide the fixing strength of the magnetic scale.

[0009] The above technical scheme has the following beneficial effects:

[0010] The action lever and the indicating lever of the switch machine are driven to move together, two magnetic heads read the moving distance of the magnetic scale on the action lever and the indicating lever respectively, the distance is equivalent to the distance of the action lever and the indicating lever, and the real-time position of the action lever and the indicating lever is obtained. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 A narrow side view of the displacement sensor of the switch machine turnout gap monitoring system of the utility model;

[0012] Figure 2 A shell wide side view of the displacement sensor of the switch machine turnout gap monitoring system of the utility model;

[0013] Figure 3 A top structure schematic view of the outgoing line end of the displacement sensor of the switch machine turnout gap monitoring system of the utility model;

[0014] Figure 4 A shell read magnetic head end bottom view of the displacement sensor of the switch machine turnout gap monitoring system of the utility model;

[0015] In the figure: 1 - shell; 2 - read magnetic head; 3 - magnetic scale; 4 - signal processing circuit board; 5 - mounting hole; 6 - cover plate; 7 - wire; 8 - cover plate bolt. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0017] Referring to Figures 1-4The displacement sensor for the turnout gap monitoring system of a switch machine comprises a sensor shell 1 and two magnetic scales 3. The two magnetic scales 3 are fixed on the action lever and the indicating lever of the switch machine respectively. Two magnetic head readers 2 are integrated at the lower part of the sensor shell 1 and arranged side by side at the same end. The sensor is installed in the switch machine through two mounting holes 5 on the cover plate 6. When the sensor is installed, one end of the magnetic head reader 2 is close to the two magnetic scales 3. The signal processing circuit board 4 is sealed by glue in the sensor shell 1. The circuit board is connected to the wire 7 which extends from the top of the shell 1. The signals collected by the two magnetic head readers 2 are output to the external collection extension after being processed by the signal processing circuit board 4 through the wire 7.

[0018] The two magnetic head readers 2 are arranged side by side at the same end. The sensor is installed in the switch machine through two mounting holes 5 on the cover plate 6. When the sensor is installed, one end of the magnetic head reader 2 is close to the two magnetic scales 3. The two magnetic scales 3 are first fixed on the stainless steel base plate to ensure the straightness and levelness of the magnetic scales 3, and then fixed on the action lever and the indicating lever respectively to provide the fixing strength of the magnetic scales 3.

[0019] In this embodiment, the cover plate 6 is integrally processed and formed, including a cover plate bolt 8 hole and a sensor body mounting hole 5, saving installation space. The sensor shell 1 is integrally processed and formed, one end of which is integrated with two magnetic head readers 2 arranged side by side, which can detect the movement of the action lever and the indicating lever at the same time. The other end is connected with the cover plate 6 and fixed and sealed by the cover plate bolt 8. The sensor is directly fixed in the switch machine through the mounting hole 5 of the cover plate 6. The signal processing circuit board 4 and the magnetic head reader 2 are sealed by glue in the sensor shell 1, which provides the protection performance of the sensor body. The signals collected by the two magnetic head readers 2 are transmitted to the signal processing circuit at the same time. After being processed by the circuit, a variety of standard signals are formed, which are output to the external collection extension through the wire 7, meeting the needs of different specifications of the collection extension. The two magnetic scales 3 are first fixed on the stainless steel base plate to ensure the straightness and levelness of the magnetic scales 3. Then they are fixed on the action lever and the indicating lever respectively to provide the fixing strength of the magnetic scales 3.

[0020] The displacement sensor for the turnout gap monitoring system of a switch machine is used for online detection of the displacement stroke of the action lever and the indicating lever of the switch machine during the turnout conversion process, real-time monitoring of the working condition of the turnout gap system of the switch machine, and ensuring the safe switching and driving of the train track. When the action lever and the indicating lever of the switch machine move, they drive the two magnetic scales 3 to move together. At this time, the two magnetic head readers 2 read the moving distance of the magnetic scales 3 on the action lever and the indicating lever respectively. This distance is equivalent to the distance of the movement of the action lever and the indicating lever respectively, so as to obtain the real-time position of the moving lever and the indicating lever.

[0021] The basic principle and main characteristics of the present application are described above, and those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A displacement sensor for a switch machine turnout gap monitoring system, characterized in that, The sensor housing is provided with two magnetic scales fixed on the action lever and the indicating lever of the switch machine respectively, two reading magnetic heads are arranged side by side below the sensor housing, a cover plate is arranged above the sensor housing, the cover plate is fixed on the housing by bolts, one end of the cover plate is provided with two mounting holes; The sensor housing is internally filled with glue to seal the signal processing circuit board, the circuit board is connected to wires, the wires extend from the top of the housing, and the signals collected by the two reading magnetic heads are output to the external collection extension after passing through the signal processing circuit board.

2. The displacement sensor for monitoring a gap of a switch machine turnout according to claim 1, wherein The two reading magnetic heads are arranged side by side at the same end, the sensor is installed in the switch machine through the two mounting holes on the cover plate, and the reading magnetic head is close to the two magnetic scales during installation of the sensor.

3. The displacement sensor for monitoring a gap of a switch machine turnout according to claim 1, wherein The two magnetic scales are first fixed on the stainless steel bottom plate to ensure the straightness and levelness of the magnetic scale, and then are fixed on the action lever and the indicating lever respectively to provide the fixing strength of the magnetic scale.

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