An automatic detection device for receiving shoe pressure

Abstract

The present invention discloses an automatic detection device for the pressure of a power shoe, the device comprising a contact rail, a fixed bracket, an insulating bracket, an insulating rail bracket, a protective cover and a detection unit, the fixed bracket is arranged outside the train track, the insulating bracket, the insulating rail bracket and the detection unit are arranged on the fixed bracket, the insulating bracket and the insulating rail bracket are arranged above the protective cover, the insulating bracket and the insulating rail bracket are arranged on the contact rail, the contact rail contacts the train power shoe and generates contact pressure which is monitored in real time by the detection unit, the contact rail is provided with smooth slopes at both ends of the contact rail and the smooth slopes at both ends of the contact rail are symmetrically arranged relative to the central area of ​​the contact rail. The automatic detection device for the pressure of the power shoe of the present invention can quickly obtain the pressure value reflecting the contact pressure between the power shoe and the third rail, and can realize the real-time detection of the contact pressure between the power shoe and the third rail in the running state of the subway vehicle of the third rail power supply system.

Description

Technical Field

[0001] The invention specifically relates to an automatic detection device for receiving shoe pressure, and belongs to the field of subway vehicle operation safety monitoring and detection in a third rail power supply system. Background Art

[0002] Regarding the contact rail (third rail) power supply, because the contact rail is at a low position and has no obvious tall components (such as columns, transverse load-bearing cables, metal trusses, etc.), it is good for the urban landscape and it is easier to take protective measures against electromagnetic pollution. This is also one of the reasons why some urban rail transit in China and abroad adopts the contact rail power supply method. The use of steel-aluminum composite rails as contact rails improves the technical performance of the contact rail current supply form and expands the application scope and prospects of the contact rail current supply method.

[0003] The train power shoe is a core component that ensures the normal operation of the locomotive operating system and electric locomotive accessories such as air conditioning and lighting. The working condition of the power shoe directly determines whether the electric locomotive can operate normally and whether it is safe.

[0004] Since the power shoe and the contact rail of the subway train are in contact with each other, long-term sliding between the two will cause surface wear, so it is necessary to conduct real-time detection and monitoring of the contact pressure between the power shoe and the contact rail to ensure the safety of train operation. Summary of the invention

[0005] The object of the present invention is to provide a device for automatically detecting the pressure of a receiving shoe, so as to solve the problem that the contact pressure between the receiving shoe and the third rail cannot be monitored in real time when a subway vehicle of a third rail power supply system is in operation.

[0006] The technical solution of the present invention is as follows:

[0007] A device for automatically detecting pressure of a power shoe, the device comprising a contact rail, a fixed bracket, an insulating bracket, an insulating rail bracket, a protective cover and a detection unit, wherein the fixed bracket is arranged outside a train track, the insulating bracket, the insulating rail bracket and the detection unit are arranged on the fixed bracket, the protective cover is arranged above the insulating bracket and the insulating rail bracket, the contact rail is arranged on the insulating bracket and the insulating rail bracket, the contact rail contacts the power shoe of the train and generates contact pressure which is monitored in real time by the detection unit, and smooth slopes are arranged at both ends of the contact rail and the smooth slopes at both ends of the contact rail are symmetrically arranged relative to the central area of ​​the contact rail.

[0008] Furthermore, the length of the contact rail is limited by the distance between two power shoes on the train, and only one power shoe can be contacted on the same contact rail during the detection process.

[0009] Furthermore, the portion of the fixing bracket where the detection unit is installed needs to be subjected to structural strengthening strain treatment.

[0010] Further, the detection unit is arranged at the bottom, side or top of the fixing bracket. Further, the detection unit is arranged at the bottom of the fixing bracket.

[0011] Furthermore, one fixed bracket is respectively arranged at the head and tail ends of the contact rail, and the number of fixed brackets arranged in the detection area between the head and tail ends of the third rail is not limited, and can be one or more.

[0012] Furthermore, the contact position between the power shoe and the contact rail is set to a bottom contact type, a top contact type or a side contact type.

[0013] Furthermore, the fixing bracket is connected to the insulating bracket and the insulating rail bracket by bolts.

[0014] Furthermore, the detection unit is configured as a high-precision strain sensor.

[0015] The beneficial effects of the present invention are as follows:

[0016] First, the automatic detection device for the pressure of the contact shoe of the present invention can quickly obtain the pressure value reflecting the contact pressure between the contact shoe and the third rail, and can realize the real-time detection of the contact pressure between the contact shoe and the third rail when the subway vehicle of the third rail power supply system is in operation, which effectively ensures the driving safety of the train and provides favorable guarantees for the application and promotion of contact rail (third rail) detection technology in urban rail transit.

[0017] Second, the automatic detection device for the power shoe pressure of the present invention has a simple structure, is easy to operate, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a side view of the device of the present invention;

[0019] Figure 2 A top view of the device of the present invention;

[0020] Figure 3 is a cross-sectional view of the device of the present invention;

[0021] Among them, 1-power shoe, 2-contact rail, 4-fixed bracket, 5-insulating bracket, 6-insulating rail bracket, 7-detection unit, 8-protective cover, 9-ground foundation, 10-rail. DETAILED DESCRIPTION

[0022] The structure of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Reference Figures 1 to 3As shown, the automatic detection device for the power shoe pressure of this embodiment includes a contact rail 2 (third rail), a fixed bracket 4, an insulating bracket 5, an insulating rail bracket 6, a protective cover 8 and a detection unit 7, wherein the fixed bracket 4 is vertically arranged on the outside of the train rail 10, and the insulating bracket 5 and the insulating rail bracket 6 are provided on the fixed bracket 4 (preferably, the fixed bracket 4 is connected to the insulating bracket 5 and the insulating rail bracket 6 by bolts), and a protective cover 8 is provided above the insulating bracket 5 and the insulating rail bracket 6, and the contact rail 2 is provided on the insulating bracket 5 and the insulating rail bracket 6;

[0024] The contact rail 2 contacts the power shoe 1 on the train and generates contact pressure. Regarding the contact rail 2, its multi-section guide slope is symmetrically arranged based on the stable contact pressure section between the power shoe 1 and the third rail, which can achieve a smooth transition between the power shoe 1 and the third rail under the set pressure state, avoid accelerated wear of the carbon slide plate of the power shoe 1 and the third rail, and pass through the stable contact pressure section between the power shoe 1 and the third rail, so as to achieve one or more detections of the contact pressure.

[0025] That is, the contact rail 2 is provided with smooth slopes at both ends to facilitate smooth transition and contact between the power shoe and the contact rail 2. In addition, the smooth slopes at both ends of the contact rail 2 are symmetrically arranged relative to the center area of ​​the contact rail, so that both ends of the contact rail 2 can stably pass and contact with the power shoe 1 on the train without being restricted by the forward or backward direction of the train, so that bidirectional detection can be achieved.

[0026] The contact mode or position between the power shoe 1 and the third rail can be changed by changing the form of the fixing bracket 4, such as setting the contact position between the power shoe 1 and the third rail to the bottom contact type (such as Figure 3 as shown), top contact type or side contact type, etc.

[0027] The number of power shoes that can be contacted on the same third rail is required as follows: The length of the third rail is limited by the spacing between the power shoes 1 on the train, and it is required that only one on-board power shoe 1 can be contacted on the same third rail in the device during the train's forward movement. The length of the third rail is set to 6.9m.

[0028] Multiple fixed brackets 4 can be provided on the same third rail, and the requirements for the provision are: one fixed bracket is provided at each end of the third rail, and the number of fixed brackets provided in the detection area between the ends of the third rail is not limited, and can be one or more. The fixed bracket 4 is made of metal.

[0029] Regarding the detection unit 7, a high-sensitivity detection unit 7 is installed on the fixed bracket 4. The detection unit 7 is not limited to the setting position on the fixed bracket 4. Preferably, the detection unit 7 can be set at the bottom of the fixed bracket 4. The detection unit 7 adopts a high-precision strain sensor.

[0030] The detection unit 7 is arranged on the fixed bracket 4. It is necessary to adjust the material structure of the corresponding contact position on the fixed bracket 4, increase the strain change of the material at the contact position, and perform aging treatment on the material stress at the contact position. When the detection unit 7 is arranged at the bottom of the fixed bracket 4, the folded steel plate extending from the bottom of the fixed bracket 4 is planarized (structural adjustment, such as removing the material folding edge, or removing the material reinforcement rib, etc.).

[0031] The on-board power shoe 1 of the train moves along with the train, and enters the power shoe pressure automatic detection device of this embodiment through the smooth slope of the multi-section guide opening of the third rail, and the detection device collects data.

[0032] Specifically, the power shoe 1 contacts the contact rail 2 and generates a relatively stable pressure. The fixed bracket 4 is equipped with a detection unit 7 to collect the contact pressure value between the power shoe 1 and the third rail (contact rail 2). After the train passes completely, the data collection is stopped. The power shoe pressure automatic detection device of this embodiment can monitor the pressure between the power shoe and the contact rail in real time.

[0033] The multi-section guide slopes of the contact rail 2 are symmetrically arranged based on the stable contact pressure section between the power shoe 1 and the third rail, which can achieve a smooth transition between the power shoe 1 and the third rail under a set pressure state, avoid accelerated wear of the carbon slide plate of the power shoe 1, and realize one or more detections of the contact pressure through the detection unit 7 in the stable contact pressure section between the power shoe 1 and the third rail.

[0034] The above description is only a preferred embodiment of the present invention and does not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An automatic detection device for power shoe pressure, characterized in that: The device comprises a contact rail, a fixed bracket, an insulating bracket, an insulating rail bracket, a protective cover and a detection unit, wherein the fixed bracket is arranged outside the train track, the insulating bracket, the insulating rail bracket and the detection unit are arranged on the fixed bracket, the insulating bracket and the insulating rail bracket are arranged above the protective cover, the insulating bracket and the insulating rail bracket are arranged on the contact rail, the contact rail contacts with the train power receiving shoe and generates contact pressure which is monitored in real time by the detection unit, and smooth slopes are arranged at both ends of the contact rail and the smooth slopes at both ends of the contact rail are arranged symmetrically with respect to the central area of ​​the contact rail; The detection unit is arranged at the bottom, side or top of the fixed bracket; A fixed bracket is respectively arranged at the head and tail ends of the contact rail, and the number of fixed brackets arranged in the detection area between the head and tail ends of the third rail is not limited, and can be one or more.

2. The automatic detection device for the pressure of the power shoe according to claim 1, characterized in that: The length of the contact rail is limited by the distance between two power receiving shoes on the train, and during the detection process, only one power receiving shoe can be contacted on the same contact rail.

3. An automatic detection device for the pressure of a power shoe as claimed in claim 1 or 2, characterized in that: The portion of the fixed bracket where the detection unit is installed needs to be subjected to structural strengthening strain treatment.

4. The automatic detection device for the pressure of the power shoe according to claim 1, characterized in that: The detection unit is arranged at the bottom of the fixing bracket.

5. The automatic detection device for the pressure of the power shoe according to claim 3, characterized in that: The contact position between the current receiving shoe and the contact rail is set to a bottom contact type, a top contact type or a side contact type.

6. The automatic detection device for the pressure of the power shoe according to claim 3, characterized in that: The fixing bracket is connected with the insulating bracket and the insulating rail bracket by bolts.

7. The automatic detection device for the pressure of the power shoe according to claim 3, characterized in that: The detection unit is configured as a high-precision strain sensor.

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