Urban rail transit pantograph-catenary static pressure sensing detection device

Abstract

The utility model discloses an urban rail transit pantograph-catenary static pressure sensing detection device, and relates to the field of mechanical design. Comprising a main body component, a pressure sensor, an induction plate, a top cover, a side baffle, a display assembly and a charging interface, the main body component is a concave integrated piece, a limiting groove is formed in the top of the side face of the main body component and used for installing the pressure sensor, a protruding block is arranged at the bottom of the induction plate and makes contact with an induction area of the pressure sensor, and the top cover is assembled with the top of the main body component. The top cover is provided with a square hole, part of the induction plate penetrates through the square hole, the side baffle is matched with the outer side face of the main body component in shape, the displayer assembly is in telecommunication connection with the pressure sensor and installed through the side baffle, the charging interface is electrically connected to the displayer assembly, and the charging interface is installed at the bottom of the side baffle. According to the utility model, the height of the pantograph is replaced, and the pressure detection device is introduced to obtain the pressure of the contact line on the pantograph when the current pantograph is in a static state.

Description

A static pressure sensing and detection device for urban rail transit pantograph-catenary system Technical Field

[0001] This utility model relates to the field of mechanical design technology, and in particular to a static pressure sensing and detection device for urban rail transit pantograph-catenary system. Background Technology

[0002] In the daily operation and maintenance of the subway system, ensuring that the static pressure between the pantograph and the contact wire is maintained within a suitable range is a crucial step. This parameter plays an indispensable role in evaluating the working efficiency of the pantograph of the subway vehicle, ensuring the smoothness of power transmission, and improving the overall operational safety.

[0003] As a key component for subway vehicles to obtain power from the overhead contact line, the pantograph's working condition directly determines whether the vehicle can receive power stably and efficiently. The static pressure between the pantograph and the contact wire is one of the important indicators for measuring this working condition. Insufficient pressure may lead to poor contact, affecting power transmission efficiency and even posing a risk of power outages; excessive pressure may accelerate wear on the pantograph and contact wire, shorten equipment lifespan, and potentially generate additional mechanical stress, causing potential damage to the vehicle structure.

[0004] Therefore, measuring the static pressure between the pantograph and the contact wire has become an indispensable part of the routine maintenance and repair of subway vehicles. This measurement process not only helps to identify and resolve potential electrical connection problems in a timely manner, but also provides important data support for optimizing pantograph design, adjusting the contact wire height, and developing scientific maintenance plans. Summary of the Invention

[0005] Purpose of the utility model: Based on the problems mentioned in the background art, this invention proposes a static pressure sensing and detection device for pantograph-catenary system in urban rail transit.

[0006] Technical solution: A static pressure sensing and detection device for urban rail transit pantograph-catenary system, comprising:

[0007] The main component is a concave integral part with a first contact area at its bottom; a limiting groove is formed at the top of the side of the main component.

[0008] Two sets of pressure sensors are installed in the limiting groove;

[0009] The sensing plate has a protrusion on its bottom and an inclined surface on its side. The protrusion is in contact with the sensing area of ​​the pressure sensor.

[0010] A top cover is assembled to the top of the main component, and the top cover has a square hole; a portion of the sensing plate passes through the square hole;

[0011] The side baffle is adapted to the shape of the outer side surface of the main component;

[0012] A display assembly is electrically connected to the pressure sensor; the display assembly is mounted via a side panel.

[0013] A charging port is electrically connected to the display assembly; the charging port is mounted on the bottom of the side panel.

[0014] Furthermore, the number of bumps is two; the surface of the bump that contacts the pressure sensor is an arc-shaped surface.

[0015] Furthermore, the number of protrusions is one, and its shape is elongated; the two ends of the protrusion are in contact with two sets of pressure sensors respectively; a semi-circular groove is formed in the middle of the top surface of the protrusion; a spherical component is fixedly installed at the bottom of the sensing plate, and the spherical component is set in the semi-circular groove and rotates.

[0016] Furthermore, a friction layer is provided on the top surface of the first contact area to increase the friction with the surface of the pantograph.

[0017] Furthermore, the two sides of the main component are concave to reduce the mass of the main component.

[0018] Furthermore, the surface of the sensing plate is smoothed.

[0019] Furthermore, raised structures are provided on both sides of the top of the top cover.

[0020] Furthermore, clamping components are respectively installed on the two inner sides of the first contact area, and the clamping components are used to clamp the sides of the carbon skateboard.

[0021] Furthermore, including:

[0022] The first limiting member is connected to the inner side of the first contact area;

[0023] The second limiting member is elastically connected to the inner side of the other side of the first contact area; insulating rubber is installed on the end faces of the first limiting member and the second limiting member.

[0024] Beneficial effects:

[0025] 1. This utility model obtains the pressure of the contact wire on the pantograph when the pantograph is stationary by changing the height of the pantograph and introducing a pressure detection device.

[0026] 2. This utility model has a wide working range. Through friction and clamping components, it can effectively keep the pantograph stationary. Thus, by observing the pantograph, the pressure data of the contact wire on the pantograph over a certain distance can be obtained, which is beneficial for statistical analysis.

[0027] 3. This utility model optimizes the protrusion to reduce the contact area between the protrusion and the pressure sensor, making the data obtained by the pressure sensor more accurate. Attached Figure Description

[0028] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0029] Figure 2 is a structural diagram of the internal components of this utility model.

[0030] Figure 3 is a schematic diagram of the sensing plate and protrusion structure of this utility model.

[0031] Figure 4 is a schematic diagram of the first optimized bump structure of this utility model.

[0032] Figure 5 is a schematic diagram of the optimized second type of bump structure of this utility model.

[0033] Figure 6 is a bottom view of this utility model.

[0034] Figure 7 is a schematic diagram of the top cover structure of this utility model.

[0035] The labels in Figures 1 to 7 are as follows: main component 1, pressure sensor 2, sensing plate 3, top cover 4, side baffle 5, display assembly 6, charging interface 7, first limiting component 81, second limiting component 82, protrusion 9, semi-circular groove 91, spherical component 10, limiting groove 11, first contact area 12, square hole 41, and raised structure 42. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] Example 1

[0038] Based on the problems mentioned in the background art, the present application aims to solve the problem of measuring the pressure between the pantograph and the contact wire. Compared with the traditional pressure measurement method, since the pantograph is located on top of the high-speed rail, the first solution is to raise the measuring device so that the sensing surface of the measuring device is on the same horizontal line as the surface of the pantograph.

[0039] This embodiment includes: a main component 1, two sets of pressure sensors 2, a sensing plate 3, a side baffle 5, a display assembly 6, and a charging interface 7. As shown in Figure 1, the main component 1 is a concave integral part with a first contact area 12 at its bottom and a limiting groove 11 on the top of its side for mounting the pressure sensor 2. The pressure sensor 2 in this embodiment includes a support block and a sensing sheet fixed on the support block. The upper surface of the sensing plate 3 is smooth and insulated. A protrusion 9 is provided at the bottom of the sensing plate 3, and the protrusion 9 contacts the sensing area of ​​the pressure sensor 2. To enhance the contact effect, a hole is provided at the bottom of the protrusion 9 for mounting a knurled nut. The knurled nut presses against the sensing sheet. The outer layer of the sensing sheet is roughened or has a rough layer to increase the friction of the protrusion 9. The top cover 4 is assembled with the top of the main component 1 to restrict the spatial position of the sensing plate 3, that is, to restrict the sensing plate 3 between the main component 1 and the top cover 4. Part of the sensing plate 3 passes through the square hole 41 to bear the pressure of the contact wire. The side baffle 5 is fitted to the shape of the outer side of the main component 1 for fixed installation. An installation area is provided on the side of the side baffle 5 for installing the display assembly 6, which is electrically connected to the pressure sensor 2. The charging interface 7 is electrically connected to the display assembly 6 and is installed at the bottom of the side baffle 5.

[0040] In this embodiment, there are two protrusions 9, which contact the sensor respectively. An optimization is made here: the surface of the protrusion 9 that contacts the pressure sensor 2 is an arc-shaped surface, increasing the pressure exerted by the protrusion 9 on the pressure sensor 2.

[0041] The top cover 4 has raised structures 42 on both sides of the top to limit the position of the contact line. The side of the sensing plate 3 is inclined and part of the sensing plate 3 passes through the square hole 41.

[0042] The working principle of this embodiment is as follows: the measuring device is attached to the pantograph, and the height of the pantograph is lowered. The height value is the same as the thickness of the measuring device itself. At this time, the sensing plate 3 is subjected to the pressure of the contact wire, and the reading is displayed through the display component 6. This pressure value is the pressure value of the pantograph subjected to the contact wire when it is static.

[0043] Meanwhile, in this embodiment, a friction layer is provided on the top surface of the first contact area 12 to increase the friction with the pantograph surface. The surface of the sensing plate 3 is smoothed. When the pantograph is moved a certain distance, the pressure data from the contact wire on the carbon sliding plate can be obtained on that section of the line. By analyzing the data, the pressure between the pantograph and the contact wire can be adjusted to ensure the reliability of power transmission and reduce the corresponding wear.

[0044] In this embodiment, there are two sets of pressure sensors 2. This embodiment provides a specific usage scheme for the two sets of pressure sensors 2:

[0045] 1. Hardware preparation: Ensure that the specifications and ranges of the two pressure sensors 2 are consistent so that accurate measurement and comparison can be performed.

[0046] Junction box for connecting two pressure sensors 2 and a display instrument.

[0047] The display instrument is capable of receiving and processing signals from two sensors and displaying a combined reading.

[0048] 2. Connection and configuration: Connect the output signals of the two pressure sensors 2 to the corresponding input terminals of the junction box.

[0049] Configure the junction box and, according to the junction box's instruction manual, combine or add the signals from the two sensors to output a single total signal.

[0050] Connect the display instrument by connecting the output signal of the junction box to the input terminal of the display instrument.

[0051] Example 2

[0052] Based on Embodiment 1, there is often a difference in the pressure detected by the two sets of pressure sensors 2. In practice, the pressure data is often obtained by processing the data through a display instrument or display assembly 6. In order to reduce the pressure difference between the two sets of pressure sensors, this embodiment optimizes the protrusion 9 by extending the protrusion 9 to a single length and modifying its shape to a long strip, with both ends simultaneously contacting the two sets of pressure sensors 2. A semi-circular groove 91 is formed in the middle of the top surface of the protrusion 9. A spherical component 10 is fixedly installed at the bottom of the sensing plate 3 and rotates within the semi-circular groove 91. Through the above optimization, the pressure on the sensing plate 3 is transmitted through the spherical component 10 and evenly distributed to both ends of the protrusion 9. This improvement, especially in Embodiment 1, makes the pressure data measured on a line more accurate and reduces the impact of contact line slippage.

[0053] Example 3

[0054] Based on Embodiment 1, in order to further enhance the relative fixation between the measuring device and the pantograph, this embodiment installs clamping components on the two inner sides of the first contact area 12 to clamp the sides of the carbon slide plate. Specifically, a first limiting member 81 is installed on the inner side of the first contact area 12, and a second limiting member 82 is elastically installed on the other inner side of the first contact area 12. Insulating rubber is installed on the end faces of the two limiting members to achieve clamping of the carbon slide plate.

[0055] The above are merely preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A static pressure sensing and detection device for pantograph-catenary system in urban rail transit, characterized in that, include: The main component is a concave integral part with a first contact area at its bottom. A limiting groove is formed on the top of the side of the main component. Two pressure sensors are installed in the limiting groove. A sensing plate has a protrusion at its bottom and an inclined side. The protrusion contacts the sensing area of ​​the pressure sensor. A top cover is assembled with the top of the main component and has a square hole. A portion of the sensing plate passes through the square hole. A side baffle is adapted to the shape of the outer side of the main component. A display assembly is electrically connected to the pressure sensor and is mounted through the side baffle. A charging interface is electrically connected to the display assembly and is installed at the bottom of the side baffle.

2. The urban rail transit pantograph-catenary static pressure sensing and detection device as described in claim 1, characterized in that, The number of bumps is two; the surface of the bumps that contacts the pressure sensor is an arc-shaped surface.

3. The urban rail transit pantograph-catenary static pressure sensing and detection device as described in claim 1, characterized in that, The number of protrusions is one, and its shape is long and narrow; the two ends of the protrusions are in contact with two sets of pressure sensors respectively; a semi-circular groove is formed in the middle of the top surface of the protrusion; a spherical component is fixedly installed at the bottom of the sensing plate, and the spherical component is set in the semi-circular groove and rotates.

4. The urban rail transit pantograph-catenary static pressure sensing and detection device as described in claim 1, characterized in that, A friction layer is provided on the top surface of the first contact area to increase the friction with the surface of the pantograph.

5. The urban rail transit pantograph-catenary static pressure sensing and detection device as described in claim 1, characterized in that, The two sides of the main component are concave to reduce the mass of the main component.

6. The urban rail transit pantograph-catenary static pressure sensing and detection device as described in claim 1, characterized in that, The surface of the induction plate is smoothed.

7. The urban rail transit pantograph-catenary static pressure sensing and detection device as described in claim 1, characterized in that, The top of the top cover has raised structures on both sides.

8. The urban rail transit pantograph-catenary static pressure sensing and detection device as described in claim 1, characterized in that, Clamping components are installed on the two inner sides of the first contact area, and the clamping components are used to clamp the sides of the carbon slide plate.

9. The urban rail transit pantograph-catenary static pressure sensing and detection device as described in claim 8, characterized in that, include: The first limiting member is connected to the inner side of the first contact area; The second limiting member is elastically connected to the inner side of the other side of the first contact area; Insulating rubber is installed on the end faces of the first and second limiting members.

Images