A turnout close track gauge monitoring device based on magnetostriction

Abstract

The utility model discloses a switch closely tracks monitoring device based on magnetostrictive, including magnetostrictive sensor, basic rail magnetic block, frog magnetic block, data acquisition extension and indoor monitoring host computer. Sensor is fixed to the ground through the foot rest, is equipped with the double monitoring range of corresponding basic rail and frog respectively. Basic rail magnetic block is installed to the basic rail bottom through the opposite side card magnetic head, and frog magnetic block is installed to the frog bottom through the single side card magnetic head. Data acquisition extension gathers the pulse signal of sensor output and is transmitted to indoor monitoring host computer, and the closely amount of basic rail transverse shift, frog and basic rail and the track gauge amount are calculated by it. The utility model discloses through the non -contact magnetostrictive sensor, realizes the remote, real -time, high -precision switch state monitoring, and the structure is stable and reliable, and the adaptability is strong, and effectively solve the inconvenient adjustment of existing mechanical type inspection device, the problem of easy misoperation, has promoted the switch operation and maintenance intelligent level and the train operation safety.

Description

Technical Field

[0001] This utility model belongs to the field of rail transit technology, and in particular relates to a turnout close-fitting gauge monitoring device based on magnetostriction. Background Technology

[0002] As a crucial piece of equipment in train operation, the reliability and stability of turnouts are vital for safe and smooth train operation. The switch rail and frog rail, as moving parts of the turnout, play a vital role in changing the direction of train travel. Their operating parameters are crucial for the safe operation of the turnout. Mastering the turnout gauge and adjusting it appropriately can enhance the smoothness and safety of high-speed trains passing through turnouts, reducing incidents of turnout shutdowns due to excessive gauge causing no open signal. This is essential for the safe operation of turnouts and the orderly operation of the line. The turnout gauge refers to the distance between the two rails when the switch rail and the stock rail are in close contact. The accuracy of this distance directly affects the stability and safety of train operation. Any deviation in gauge can cause train swaying and may even lead to serious accidents such as derailment.

[0003] Currently, mechanical contact inspection devices are available in turnout areas. The basic principle of this device is that an indicator rod fixed to the switch rail is connected along the bottom of the track to a contact inspection main unit fixed to the ballast bed. The main unit contains an inspection column, and the indicator rod has an inspection notch. When the turnout is switched into position, the inspection column inside the main unit falls into the inspection notch on the indicator rod, indicating that the contact is satisfactory, and the corresponding turnout indication circuit will be activated. If the contact is insufficient after the turnout is switched into position, the inspection column inside the main unit will not fall into the inspection notch on the indicator rod, and the corresponding turnout indication current will be cut off. This achieves the purpose of preventing the corresponding turnout indication circuit from opening when there is a problem with the contact.

[0004] Existing technologies have drawbacks, including inconvenience in on-site inspection and adjustment, and the potential for contact malfunctions to compromise the safety and reliability of the turnout contact checker. A device is needed on-site that can remotely view and confirm the turnout contact and gauge status, enabling rapid location of faults and their causes, thus reducing maintenance time. Utility Model Content

[0005] The purpose of this invention is to provide a turnout close-fitting gauge monitoring device based on magnetostriction to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the specific technical solution of this utility model for a turnout close-fit gauge monitoring device based on magnetostriction is as follows: A turnout gauge monitoring device based on magnetostriction, comprising: The magnetostrictive sensor is fixed to the ground below the rail by a tripod, with its length direction perpendicular to the rail travel direction. The magnetostrictive sensor has a dual-range structure, including a monitoring range one located below the main rail and a monitoring range two located below the switch rail. The basic rail magnetic block is fixed to the bottom of the basic rail by the edge clamping magnetic head and is located above the first monitoring range; The switch rail magnetic block is fixed to the bottom of the switch rail by a single-sided magnetic head and is located above the second monitoring range; A data acquisition unit is connected to the magnetostrictive sensor and is used to acquire pulse signals; The indoor monitoring host is communicatively connected to the data acquisition sub-unit and is used to receive the pulse signal and calculate the lateral displacement of the base rail, the contact amount between the switch rail and the base rail, and the track gauge.

[0007] Furthermore, the opposite edge magnetic head includes a clamping bracket one, a clamping bracket two, an external hexagonal bolt, and a fastening mechanism. The clamping bracket one and the clamping bracket two are connected by the external hexagonal bolt, and the end of the external hexagonal bolt is fastened by the fastening mechanism. A magnetic block fixing part is provided below the clamping bracket one, and the basic rail magnetic block is fixed to the magnetic block fixing part.

[0008] Furthermore, the fastening mechanism includes a flat washer, a spring washer, a hexagonal nut, a lock nut, and a cotter pin, used to prevent the external hexagonal bolt from loosening.

[0009] Furthermore, the single-sided magnetic head includes a single-sided clamping bracket, an upper pressure plate, a lower pressure plate, a backstop valve, and a backstop pin. The upper pressure plate and the lower pressure plate are respectively fixed to the upper and lower sides of the opening of the single-sided clamping bracket. The backstop valve is threaded to the upper end of the single-sided clamping bracket and is used to adjust the distance between the upper pressure plate and the lower pressure plate to clamp the bottom of the tip rail. The backstop pin engages with the outer circumferential gear ring of the backstop valve through an elastic element to prevent it from retracting.

[0010] Furthermore, the surfaces of the upper pressure plate and the lower pressure plate are provided with interlocking teeth.

[0011] Furthermore, the magnetostrictive sensor is a magnetostrictive displacement sensor.

[0012] Furthermore, the data acquisition unit and the indoor monitoring host are connected via wired or wireless communication.

[0013] The turnout gauge monitoring device based on magnetostriction of this invention has the following advantages: 1. Enable remote, real-time monitoring: Through magnetostrictive sensors and data acquisition systems, the turnout contact and track gauge status can be viewed remotely and in real-time from an indoor host, eliminating the need for frequent on-site inspections by personnel.

[0014] 2. High measurement accuracy and quantitative results: Based on the principle of magnetostriction, displacement is measured, and the basic rail lateral displacement, contact amount and gauge can be calculated accurately and digitally, avoiding the fuzzy judgment and contact malfunction of mechanical inspection devices.

[0015] 3. Highly adaptable to installation and reliably fixed: To address the differences in the bottom structure of the basic rail and the switch rail, opposite-side locking heads and single-side locking heads were designed respectively, which can be firmly and stably installed on the bottom of different rail types.

[0016] The magnetic head for the side-mounted card uses an anti-loosening fastening mechanism, while the magnetic head for the single-side-mounted card uses a backstop valve with a backstop mechanism and a pressure plate with biting teeth, which effectively prevents the magnetic block from loosening or falling off due to train vibration, ensuring the stability of long-term monitoring.

[0017] 4. Relatively simple structure and high reliability: The core sensor is a non-contact measurement, which avoids complex mechanical linkage parts, reduces wear and failure points, and improves the overall safety and reliability of the system.

[0018] In summary, this device solves the problems of inconvenience in viewing and adjusting existing mechanical inspection devices and susceptibility to malfunction. It achieves high-precision, digital, remote real-time monitoring and early warning of key turnout status parameters (tight fit, track gauge), thereby improving the intelligent level of turnout operation and maintenance and the ability to ensure traffic safety. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall installation structure of this utility model; Figure 2 This is a schematic diagram of the structure of the magnetic head on the opposite side. Figure 3 This is a schematic diagram of the structure of a single-sided card magnetic head; Figure 4 Schematic diagram of the anti-retraction mechanism; Figure 5 This is a system structure diagram. Detailed Implementation

[0020] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a turnout gauge monitoring device based on magnetostriction.

[0021] like Figure 1 Figure 5 As shown, this utility model discloses a turnout close-fitting gauge monitoring device based on magnetostriction, which includes a magnetostrictive sensor 1, a base rail magnetic block 2, a side rail magnetic head 3, a switch rail magnetic block 4, a single-side rail magnetic head 5, a data acquisition unit 6, and an indoor monitoring host 7.

[0022] The magnetostrictive sensor 1 is fixed to the ground below the rail 100 by a stand 11. The magnetostrictive sensor 1 adopts a dual-range structure, including a monitoring range one and a monitoring range two. The monitoring range one is located below the bottom of the main rail 200, and the monitoring range two is located below the bottom of the switch rail 300. The length direction of the magnetostrictive sensor 1 is perpendicular to the rail travel direction. Preferably, the magnetostrictive sensor 1 is a magnetostrictive displacement sensor.

[0023] The base rail magnetic block 2 is fixed to the bottom of the base rail 200 by the opposite side clamping magnetic head 3 and is placed above the first monitoring range of the magnetostrictive sensor 1; the switch rail magnetic block 4 is fixed to the bottom of the switch rail 300 by the single side clamping magnetic head 5 and is placed above the second monitoring range of the magnetostrictive sensor 1.

[0024] like Figure 2 As shown, based on the shape of the bottom of the base rail 200, there are clamping parts on both sides. Therefore, the opposite-side clamping magnetic head 3 can be fixed to the bottom of the base rail 200 through the two-sided encircling clamping structure. The opposite-side clamping magnetic head 3 includes a clamping bracket 1 31, a clamping bracket 2 32, an external hexagonal bolt 33, and a fastening mechanism 34. The clamping bracket 1 31 and the clamping bracket 2 32 are connected by the external hexagonal bolt 33. One end of the external hexagonal bolt 33 is fixed by a nut, and the other end is fastened by the fastening mechanism 34. The clamping bracket 1 31 and the clamping bracket 2 32 have grooves on opposite sides for clamping the bottom of the base rail 200 and locking them by the fastening mechanism 34. The clamping bracket 1 31 has a magnetic block fixing part below it. The base rail magnetic block 2 is fixedly installed in the magnetic block fixing part below the clamping bracket 1 31 by fasteners, preferably bolts. The fastening mechanism 34 includes a flat washer 341, a spring washer 342, a hexagonal nut 343, a lock nut 344, and a cotter pin 345. An external hexagonal bolt 33 protrudes from the end of the clamping bracket 31 and is fixed in sequence by the flat washer 341, the spring washer 342, the hexagonal nut 343, the lock nut 344, and the cotter pin 345 to prevent loosening.

[0025] like Figure 3 As shown, based on the shape of the bottom of the switch rail 300, since there is no clamping part on one side, the single-sided clamping magnetic head 5 is fixed to one side of the bottom of the switch rail 300 using a single-sided clamping fixing method. The single-sided clamping magnetic head 5 includes a single-sided clamping bracket 51, an upper pressure plate 52, a lower pressure plate 53, a stop valve 54, and a stop pin 55. The upper pressure plate 52 and the lower pressure plate 53 are fixed to the upper and lower surfaces of the opening of the single-sided clamping bracket 51, respectively. The upper end of the single-sided clamping bracket 51 is threadedly connected to the stop valve 54, and the lower end of the stop valve 54 is fixed to the upper end of the upper pressure plate 52. By rotating the stop valve 54, the distance between the upper pressure plate 52 and the lower pressure plate 53 can be adjusted, thereby clamping one end of the bottom of the switch rail 300. The upper and lower pressure plates are provided with interlocking teeth to enhance the clamping force. Figure 4As shown, the check valve 54 has a toothed ring on its outer periphery, and the check needle 55 engages with the toothed ring through an elastic element, thereby preventing the check valve 54 from retracting and preventing the clamp from loosening. The switch rail magnet 4 is fixedly installed below the single-sided clamping bracket 51 by fasteners, preferably bolts.

[0026] The data acquisition unit 6 is connected to the magnetostrictive sensor 1 via a cable, and is used to collect pulse signals and upload them to the indoor monitoring host 7 via wired or wireless communication.

[0027] The indoor monitoring host 7 is used to receive pulse signal data and calculate the lateral displacement of the main rail, the amount of contact between the switch rail and the main rail, and the gauge, so as to realize the real-time evaluation and early warning of the turnout operation status.

[0028] When the turnout switches, the switch rail 300 shifts relative to the stock rail 200, causing a change in the relative position between the switch rail magnetic block 4 and the second monitoring range of the magnetostrictive sensor 1, generating a strain pulse signal. Similarly, if the stock rail 200 shifts laterally, a signal change will occur between the stock rail magnetic block 2 and the first monitoring range of the magnetostrictive sensor 1. These signals are uploaded to the indoor monitoring host 7 via the data acquisition unit 6. Through time difference calculation and coordinate transformation, the contact amount and gauge can be accurately determined, enabling real-time monitoring and safety assessment of the turnout status.

[0029] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A turnout gauge monitoring device based on magnetostriction, characterized in that, include: The magnetostrictive sensor (1) is fixed to the ground below the rail by a stand (11), and its length direction is perpendicular to the rail travel direction. The magnetostrictive sensor (1) has a dual-range structure, including a monitoring range one located below the base rail (200) and a monitoring range two located below the switch rail (300). The basic rail magnetic block (2) is fixed to the bottom of the basic rail (200) by the opposite side clamp magnetic head (3) and is located above the monitoring range one; The switch rail magnetic block (4) is fixed to the bottom of the switch rail (300) by a single-sided magnetic head (5) and is located above the second monitoring range; The data acquisition unit (6) is connected to the magnetostrictive sensor (1) and is used to acquire pulse signals; The indoor monitoring host (7) is connected in communication with the data acquisition sub-unit (6) to receive the pulse signal and calculate the lateral displacement of the base rail, the close contact between the switch rail and the base rail, and the track gauge.

2. The apparatus according to claim 1, characterized in that, The opposite side magnetic head (3) includes a clamping bracket one (31), a clamping bracket two (32), an external hexagonal bolt (33) and a fastening mechanism (34). The clamping bracket one (31) and the clamping bracket two (32) are connected by the external hexagonal bolt (33). The end of the external hexagonal bolt (33) is fastened by the fastening mechanism (34). A magnetic block fixing part is provided below the clamping bracket one (31), and the basic rail magnetic block (2) is fixed to the magnetic block fixing part.

3. The apparatus according to claim 2, characterized in that, The fastening mechanism (34) includes a flat washer (341), a spring washer (342), a hexagonal nut (343), a lock nut (344), and a cotter pin (345) to prevent the external hexagonal bolt (33) from loosening.

4. The apparatus according to claim 1, characterized in that, The single-sided magnetic head (5) includes a single-sided clamping bracket (51), an upper pressure plate (52), a lower pressure plate (53), a backstop valve (54), and a backstop pin (55). The upper pressure plate (52) and the lower pressure plate (53) are respectively fixed to the upper and lower sides of the opening of the single-sided clamping bracket (51). The backstop valve (54) is threaded to the upper end of the single-sided clamping bracket (51) and is used to adjust the distance between the upper pressure plate (52) and the lower pressure plate (53) to clamp the bottom of the tip rail (300). The backstop pin (55) engages with the outer circumferential gear ring of the backstop valve (54) through an elastic element to prevent it from retracting.

5. The apparatus according to claim 4, characterized in that, The upper pressure plate (52) and the lower pressure plate (53) are provided with interlocking teeth on their surfaces.

6. The apparatus according to claim 1, characterized in that, The magnetostrictive sensor (1) is a magnetostrictive displacement sensor.

7. The apparatus according to claim 1, characterized in that, The data acquisition unit (6) and the indoor monitoring host (7) are connected by wired or wireless communication.

Images