Rail insulation resistance on-line testing device calibration device

Abstract

This invention provides a calibration device for an online track insulation resistance testing device. It simulates the actual online operation of a track by setting two simulated tracks, with a gap between them to replicate the structure of a track insulation joint. A resistor box assembly connects the two simulated tracks, providing a specific resistance value between them during calibration. The device acquires the measurement results from the online track insulation resistance testing device through a central control test bench assembly. Based on the measurement results and the resistance value provided by the resistor box assembly, the error value of the online track insulation resistance testing device is analyzed. Calibration is then performed based on this error value. This device offers advantages such as high integration, convenient operation, and resistance to human error, thus solving the technical problems in existing technologies.

Description

Technical Field

[0001] This utility model belongs to the field of track insulation testing technology, specifically relating to a calibration device for an online track insulation resistance testing device. Background Technology

[0002] In railway operations, the testing of track insulation performance is a crucial step in ensuring safe train operation. It is primarily used to test the insulation performance of insulating components in track circuits, ensuring the normal operation of the signaling system and safe train operation. To efficiently and accurately assess the track insulation condition, online track insulation resistance testing devices are commonly used. Track insulation measuring instruments are one of the most common types of online track insulation resistance testing devices designed based on the principle of electromagnetic induction. They are used to directly test the resistance or impedance of key insulating components in track circuits (such as rail end insulation, turnout installation insulation, gauge rod insulation, etc.). Compared to traditional methods (such as multimeters or megohmmeters), their advantage lies in the fact that measurements can be completed without disassembling the equipment, avoiding equipment damage or data distortion caused by disassembly, and significantly improving testing efficiency and accuracy.

[0003] In use, the online track insulation resistance test device applies a high-frequency signal to the insulation section under test and collects the signals at both ends to calculate the impedance value. However, in long-term use, due to factors such as natural aging, temperature changes, and physical stress, the key components (such as amplifiers and sensors) in the online track insulation resistance test device will experience performance drift, resulting in measurement deviation. If the online track insulation resistance test device is not calibrated, the insulation status may be misjudged during use, leading to signal system failure or even train accidents.

[0004] In existing technologies, calibrating online track insulation resistance testing devices typically requires the use of various instruments and equipment, such as signal generators, oscilloscopes, and resistance boxes, to build a calibration platform that simulates the actual operation of the rails. However, due to the large number of instruments and equipment used, the low level of integration, inconvenient operation, and susceptibility to human factors, technical problems such as large calibration errors, low efficiency, and easy damage occur. Utility Model Content

[0005] To address the technical problems in the background art where calibrating an online track insulation resistance testing device requires the use of various instruments and equipment to build a calibration platform to simulate the operation of the rails on-site, the large number of instruments and equipment used, low integration, inconvenient operation, and susceptibility to human factors lead to large calibration errors, low efficiency, and easy damage, this utility model provides a calibration device for an online track insulation resistance testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A calibration device for an online track insulation resistance testing device, comprising: a resistance box assembly, a central control test bench assembly, a power supply installation assembly, and two simulated tracks;

[0008] The two simulated tracks are arranged adjacent to each other with a gap between them, so that the two simulated tracks are in an insulated state;

[0009] The resistor box assembly spans the gap and is electrically connected to the two simulated tracks respectively;

[0010] The power supply installation assembly is positioned close to the simulated track and is used to install the online track insulation resistance testing device to be calibrated;

[0011] The central control test bench assembly is electrically connected to the online track insulation resistance test device to be calibrated.

[0012] Optionally, the resistor box assembly includes a resistor box and two fixing members;

[0013] The fixing components are respectively installed on the bottom of the two simulated tracks;

[0014] The resistor box is installed on the upper end of the fixing member and is electrically connected to the web of the two simulated tracks respectively.

[0015] Optionally, the resistor box is detachably mounted on the fixing member.

[0016] Optionally, the resistor box is a dial-type standard resistor box, and the resistor box includes at least eight resistance levels: 5Ω, 10Ω, 20Ω, 50Ω, 100Ω, 120Ω, 150Ω and 200Ω.

[0017] Optionally, the calibration device for the online track insulation resistance test also includes a cabinet;

[0018] The cabinet is provided with a cavity, and the resistor box assembly, the power supply installation assembly and the two simulated tracks are all arranged in the cavity.

[0019] The central control test bench assembly is mounted on the cabinet outside the accommodating cavity.

[0020] Optionally, the calibration device for the online track insulation resistance test apparatus further includes a robotic arm assembly;

[0021] The robotic arm assembly is disposed in the receiving cavity.

[0022] The robotic arm assembly is electrically connected to the central control test bench assembly and is used to adjust the resistor box to change its output resistance.

[0023] Optionally, the power supply installation assembly includes a power supply base and two measuring connection blocks;

[0024] The two measuring connection blocks are respectively disposed on the tread surface of the simulated track and are electrically connected to the tread surface of the simulated track;

[0025] The power supply base is positioned close to the simulated track and is used to install the online track insulation resistance testing device to be calibrated and to supply power to the online track insulation resistance testing device to be calibrated.

[0026] The online track insulation resistance testing device to be calibrated is electrically connected to the two measuring connection blocks respectively.

[0027] Optionally, a transparent sealing cover is provided on the receiving cavity, and the transparent sealing cover is movably disposed on the top of the receiving cavity for sealing the receiving cavity.

[0028] Optionally, the central control test bench assembly includes a touch screen and an industrial control host;

[0029] The touch display screen is movably mounted on the cabinet and is electrically connected to the industrial control host.

[0030] The industrial control host is at least partially housed in the cabinet and is electrically connected to the robotic arm assembly and the online track insulation resistance testing device to be calibrated. It is used to analyze the calibration results and display them through the touch screen.

[0031] Optionally, an insulating layer is provided on the underside of each of the simulated tracks.

[0032] The beneficial effects of this utility model are:

[0033] This invention provides a calibration device for an online track insulation resistance test apparatus. It uses two simulated tracks to mimic the actual online operation of tracks in the field, with a gap between the simulated tracks to replicate the structure of the track insulation joint. A resistor box assembly connects the two simulated tracks, providing a specific resistance value between them during calibration according to the calibration requirements. The online track insulation resistance test apparatus to be calibrated is installed via a power supply mounting assembly, and the results measured by the online track insulation resistance test apparatus are acquired using a central control test bench assembly. Based on the measured results and the resistance value provided by the resistor box assembly, the error value of the online track insulation resistance test apparatus can be directly analyzed and determined within the central control test bench assembly. This allows the operator to adjust the online track insulation resistance test apparatus based on the error value, completing the calibration operation. This online track insulation resistance test apparatus calibration device has the advantages of high integration, convenient operation, and less susceptibility to human uncertainty, solving the technical problems in existing technologies. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the calibration device for the online testing device for track insulation resistance in this utility model;

[0035] Figure 2 This is a front view of the calibration device of the online track insulation resistance testing device in this utility model;

[0036] Figure 3 This is a schematic diagram of the calibration device cabinet of the online track insulation resistance testing device in this utility model;

[0037] Figure 4 This is a schematic diagram of the cavity accommodating the calibration device of the online track insulation resistance testing device in this utility model;

[0038] Figure 5 This is a schematic diagram of the front of the cavity containing the calibration device of the online track insulation resistance testing device in this utility model;

[0039] Figure 6 This is a schematic diagram of the induction coil of the online track insulation resistance testing device in this utility model.

[0040] The components include: 1. Resistor box assembly; 11. Resistor box; 12. Fixing component; 2. Central control test bench assembly; 21. Touch screen display; 3. Power supply installation assembly; 31. Power supply base; 32. Measurement connection block; 4. Simulated track; 41. Rail base; 42. Rail web; 43. Tread surface; 5. Online track insulation resistance testing device; 51. Induction coil; 52. Measuring instrument body; 6. Cabinet; 61. Receiving cavity; 7. Robotic arm assembly. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0044] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0047] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] See Figures 1 to 5 The diagram shows a schematic of the calibration device for the online track insulation resistance testing device provided in this utility model. The calibration device includes a resistor box assembly 1, a central control test bench assembly 2, a power supply mounting assembly 3, and two simulated tracks 4. The two simulated tracks 4 are arranged adjacent to each other with a gap to ensure that the two simulated tracks 4 are in an insulated state. The resistor box assembly 1 spans the gap and is electrically connected to the two simulated tracks 3 respectively. The power supply mounting assembly 3 is arranged close to the simulated tracks 4 for mounting the online track insulation resistance testing device 5 to be calibrated. The central control test bench assembly 2 is electrically connected to the online track insulation resistance testing device 5 to be calibrated.

[0049] In this embodiment, two simulated tracks 4 are used to simulate the actual online operation of the track. A gap is set between the simulated tracks 4 to reproduce the structure of the track insulation joint. A resistor box assembly 1 connects the two simulated tracks 4 to provide a specific resistance value between them according to the calibration requirements during the calibration test. The track insulation resistance online testing device 5 to be calibrated is installed through the power supply mounting assembly 3, and the measurement results of the track insulation resistance online testing device 5 are obtained using the central control test bench assembly 2. Based on the measurement results of the track insulation resistance online testing device 5 and the resistance value provided by the resistor box assembly 1, the error value of the track insulation resistance online testing device 5 can be directly analyzed and obtained in the central control test bench assembly 2. This allows the operator to adjust the track insulation resistance online testing device 5 based on the error value and complete the calibration operation. The track insulation resistance online testing device calibration device of this utility model has the advantages of high integration, convenient operation, and less susceptibility to human uncertainty, solving the technical problems in the prior art.

[0050] Further reference Figure 5 and Figure 6 In this embodiment, the online track insulation resistance testing device 5 to be calibrated includes at least an induction coil 51 and a measuring instrument body 52. ​​During the calibration process, the induction coil 51 is fixed at the gap between two simulated tracks 4, and the measuring instrument body 52 is installed on the power supply mounting assembly 3 and electrically connected to the central control test bench assembly 2. During the calibration test, the measured resistance data is output to the central control test bench assembly 2. The central control test bench assembly 2 compares the measured resistance data with the actual resistance value provided by the resistance box assembly 1 to directly obtain the error value of the online track insulation resistance testing device 5 to be calibrated. The operator then calibrates the online track insulation resistance testing device 5 to be calibrated based on this error value.

[0051] Optionally, refer to Figures 2 to 4 The resistor box assembly 1 in this utility model includes a resistor box 11 and two fixing members 12; the fixing members 12 are respectively set on the bottom 41 of the two simulated tracks 4; the resistor box 11 is installed on the upper end of the fixing member 12 and is electrically connected to the waist 42 of the two simulated tracks 4 respectively.

[0052] In this embodiment, the resistor box 11 is mounted on the rail base 41 by the fastener 12 and electrically connected to the rail web 42 to provide a defined resistance value between the two simulated rails 4. At the same time, the fastener 12 is used to fix the resistor box 11. During use, the fastener 12 can also absorb mechanical shocks. For example, when adjusting the resistance value of the resistor box 11, it can prevent the resistance value from drifting due to mechanical shocks and improve the accuracy of calibration tests.

[0053] Furthermore, the fastener 12 can be selected as a clamping mechanism and has a cushioning pad.

[0054] Optionally, the resistor box 11 in this invention can be detachably mounted on the fixing member 12.

[0055] In this embodiment, the resistor box 11 is detachably mounted on the fixing member 12. During use, different resistor boxes can be adapted according to different calibration requirements. When the resistor box 11 ages or fails, it can be quickly disassembled and replaced, which has good expansion flexibility and maintenance convenience.

[0056] Furthermore, the detachable connection method between the resistor box 11 and the fixing member 12 can be specifically selected as a snap-fit ​​connection, a bolt connection, a slider self-locking connection, or other detachable connection methods known to those skilled in the art.

[0057] Optionally, the resistor box 11 in this utility model is a dial-type standard resistor box, and the resistor box includes at least eight resistance levels: 5Ω, 10Ω, 20Ω, 50Ω, 100Ω, 120Ω, 150Ω and 200Ω.

[0058] In this embodiment, the resistor box 11 is set as a toggle-type standard resistor box. During use, the characteristics of toggle switching, multiple positions, and high precision can quickly and accurately provide the required calibration resistance value. Its operating efficiency, stability, and accuracy are far superior to those of conventional rotary switch type resistor boxes.

[0059] Optionally, refer to Figures 3 to 5 The calibration device for the online track insulation resistance test device of this utility model also includes a cabinet 6; the cabinet 6 is provided with a cavity 61, the resistor box assembly 1, the power supply installation assembly 3 and the two simulated tracks 4 are all set in the cavity 61; the central control test bench assembly 2 is set on the cabinet 6 outside the cavity 61.

[0060] In this embodiment, the resistor box assembly 1, the power supply mounting assembly 3, and the two simulation tracks 4 are housed in the cabinet 6 and the accommodating cavity 61, which avoids the interference from temperature, vibration and other surrounding environmental factors when calibrating externally; at the same time, the central control test bench assembly 2 is set on the cabinet 6, which facilitates the operator to perform relevant adjustment operations.

[0061] Optionally, refer to Figure 4 and Figure 5 The calibration device for the online track insulation resistance testing device of this utility model also includes a robotic arm assembly 7; the robotic arm assembly 7 is disposed in the accommodating cavity 61; the robotic arm assembly 7 is electrically connected to the central control test bench assembly 2 and is used to adjust the resistance box 11 to change the output resistance of the resistance box 11.

[0062] In this embodiment, the robotic arm assembly 7 is controlled by the central control test bench assembly 2, or the robotic arm assembly 7 is controlled by the central control test bench assembly 2 with a predetermined program, to adjust the resistance box 11 by switching gears, so as to perform automated resistance value adjustment, avoid the accuracy error caused by manual intervention, and shorten the operation time of switching resistance values.

[0063] Furthermore, in this embodiment, the robotic arm assembly 7 is at least a three-axis linear module robotic arm.

[0064] Specifically, the robotic arm component 7 in this embodiment can be the RM65 model.

[0065] Optionally, refer to Figure 5 The power supply installation assembly 3 of this utility model includes a power supply base 31 and two measuring connection blocks 32; the two measuring connection blocks 32 are respectively disposed on the tread surface 43 of the simulated track 4 and electrically connected to the tread surface 43 of the simulated track 4; the power supply base 31 is disposed close to the simulated track 4 and is used to install the online track insulation resistance test device 5 to be calibrated, and the power supply base 31 provides power to the online track insulation resistance test device 5 to be calibrated; the online track insulation resistance test device 5 to be calibrated is electrically connected to the two measuring connection blocks 32 respectively.

[0066] In this embodiment, two measuring connection blocks 32 are respectively welded to the tread surface 43 of the simulated track 4 and respectively connected to the measuring instrument body 52 to input the test electrical signal into the simulated track 4, and measure the resistance in conjunction with the induction coil 51.

[0067] Optionally, the cavity 61 of this invention is provided with a transparent sealing cover, which is movably disposed on the top of the cavity 61 for sealing the cavity 61.

[0068] In this embodiment, a transparent sealing cover is movably provided on the top of the cavity 61 to seal the cavity 61 during the calibration process. This prevents external temperature, airflow, etc. from disturbing the resistor box 11, while also allowing the operator to observe the status of the robotic arm assembly 7 and the resistor box 11 in the cavity 61 in real time, so as to perform corresponding operations.

[0069] Furthermore, the transparent sealing cover in this embodiment can be made of pressure plate material.

[0070] Optionally, refer to Figures 3 to 5 The central control test bench assembly 2 of this utility model includes a touch screen display 21 and an industrial control host; the touch screen display 21 is movably mounted on the cabinet 6 and electrically connected to the industrial control host; the industrial control host is at least partially mounted in the cabinet 6 and electrically connected to the robotic arm assembly 7 and the online track insulation resistance test device 5 to be calibrated, for analyzing calibration results and displaying them through the touch screen display 21.

[0071] In this embodiment, the calibration resistance output by the resistor box 11 can be directly input via the touch display 21 in conjunction with the industrial control host, while the robotic arm assembly 7 is controlled to adjust the resistance box 11. After the industrial control host analyzes the error of the online track insulation resistance testing device 5, the error value can be displayed intuitively.

[0072] Specifically, the industrial control host in this embodiment may include an Intel Celeron J6412 processor and a built-in error analysis algorithm, which calculates the resistance error value using the formula: resistance error value = (test resistance value - actual resistance value) / actual resistance value × 100%.

[0073] Optionally, each simulated track 4 in this invention has an insulating layer placed on its underside.

[0074] In this embodiment, an insulating layer is provided under the simulated track 4 to block the conductivity of the cabinet 6 or other load-bearing objects, thus ensuring the purity of the calibration test.

[0075] Furthermore, the insulation layer can be set as an epoxy glass cloth laminate.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0077] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A calibration device for an on-line track insulation resistance testing device, characterized in that, The calibration device for the online track insulation resistance test includes a resistance box assembly (1), a central control test bench assembly (2), a power supply installation assembly (3), and two simulated tracks (4); The two simulated tracks (4) are arranged adjacent to each other with a gap, so that the two simulated tracks (4) are in an insulating state; The resistor box assembly (1) spans the gap and is electrically connected to the two simulated tracks (4) respectively; The power supply installation assembly (3) is positioned close to the simulated track (4) for installing the online track insulation resistance test device (5) to be calibrated; The central control test bench assembly (2) is electrically connected to the online track insulation resistance test device (5) to be calibrated.

2. The on-line track insulation resistance testing device calibration apparatus according to claim 1, wherein, The resistor box assembly (1) includes a resistor box (11) and two fasteners (12); The fixing element (12) is respectively set on the bottom (41) of the two simulated tracks (4); The resistor box (11) is installed on the upper end of the fixing member (12) and is electrically connected to the rail web (42) of the two simulated tracks (4) respectively.

3. The on-line track insulation resistance testing device calibration apparatus of claim 2, wherein, The resistor box (11) is detachably mounted on the fastener (12).

4. The on-line track insulation resistance testing device calibration apparatus of claim 2, wherein, The resistor box (11) is a standard resistor box with adjustable ranges, and the resistor box includes at least eight resistance ranges: 5Ω, 10Ω, 20Ω, 50Ω, 100Ω, 120Ω, 150Ω and 200Ω.

5. The on-line track insulation resistance testing device calibration apparatus of claim 4, wherein, The calibration device for the online track insulation resistance test also includes a cabinet (6); The cabinet (6) is provided with a cavity (62), and the resistor box assembly (1), the power supply installation assembly (3) and the two simulated tracks (4) are all located in the cavity (62); The central control test bench assembly (2) is located on the cabinet (6) outside the accommodating cavity (62).

6. The on-line track insulation resistance testing device calibration apparatus of claim 5, wherein, The calibration device for the online track insulation resistance test also includes a robotic arm assembly (7); The robotic arm assembly (7) is disposed in the receiving cavity (62); The robotic arm assembly (7) is electrically connected to the central control test bench assembly (2) and is used to adjust the resistor box (11) to change the output resistance of the resistor box (11).

7. The on-line track insulation resistance testing device calibration apparatus of claim 6, wherein, The power supply installation assembly (3) includes a power supply base (31) and two measuring connection blocks (32); The two measuring connection blocks (32) are respectively disposed on the tread (43) of the simulated track (4) and are electrically connected to the tread (43) of the simulated track (4); The power supply base (31) is positioned close to the simulated track (4) for mounting the online track insulation resistance test device (5) to be calibrated and for supplying power to the online track insulation resistance test device (5). The online track insulation resistance test device (5) to be calibrated is electrically connected to the two measuring connection blocks (32) respectively.

8. The on-line track insulation resistance testing device calibration apparatus of claim 5, wherein, A transparent sealing cover is provided on the receiving cavity (62), and the transparent sealing cover is movably disposed on the top of the receiving cavity (62) for sealing the receiving cavity (62).

9. The on-line track insulation resistance testing device calibration apparatus of claim 6, wherein, The central control test bench assembly (2) includes a touch screen (21) and an industrial control host; The touch display screen (21) is movably mounted on the cabinet (6) and electrically connected to the industrial control host; The industrial control host is at least partially housed in the cabinet (6) and is electrically connected to the robotic arm assembly (7) and the online track insulation resistance testing device (5) to be calibrated. It is used to analyze the calibration results and display them through the touch screen (21).

10. The track insulation resistance on-line testing device calibration device according to any one of claims 1 to 9, characterized in that, An insulating layer is provided on the underside of each of the simulated tracks (4).

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