A running gear applied to railway turnout and system thereof

Abstract

This utility model discloses a traveling device and system for railway turnouts, belonging to the technical field of railway inspection equipment. Addressing the problems of poor maneuverability and easy jamming / derailment of existing track inspection trolleys in turnout areas, this utility model adopts a T-shaped layout structure. Through the coordinated operation of the longitudinal beam tensioning wheel group, the crossbeam tensioning wheel group, and the controllable retractable measuring wheel, it achieves smooth passage through the harmful spaces of the turnout. The technical solution includes: a T-shaped frame composed of longitudinal and crossbeams; traveling wheels and guide wheel groups mounted on the frame; measuring wheels and spring guide rails controlled by a ratchet mechanism; and horizontal compensation wheels and track gauge compensation wheels. The method includes four stages: normal travel, locking before entering the turnout, passing through the turnout, and resetting. This utility model stabilizes the vehicle's posture through the tensioning wheel group and locks the position of the measuring wheel through the ratchet mechanism, effectively solving the technical problems of wheel collisions, wheel entrapment, and rail climbing in traditional inspection trolleys in turnout areas, significantly improving the efficiency and safety of turnout inspection.

Description

Technical Field

[0001] This utility model relates to a traveling device and system, and more particularly to a traveling device and system for railway turnouts, belonging to the field of railway track equipment applications. Background Technology

[0002] Railway turnouts are key pieces of equipment in railway track systems, used to guide trains from one track to another or to connect tracks at intersections. Their complex structure requires high reliability and safety. Turnouts mainly consist of switch rails, stock rails, frogs, guard rails, slides, and connecting rods. As one of the three weakest sections of the track, turnouts are prone to defects, including exceeding track gauge limits, incorrect track alignment, abnormal switch rail lowering, and exceeding track gauge limits in the frog throat area. Currently, turnout inspection primarily relies on manual measurement. Manual inspection is labor-intensive, inefficient, produces coarse data, and lacks timely feedback. It also suffers from low levels of information management and demands a high level of professional expertise from inspection personnel.

[0003] Currently, the main method for inspecting turnouts is manual measurement, using tools such as track gauges, offset gauges, feeler gauges, and steel rulers to check the geometric and structural parameters of the turnout track. Manual inspection is labor-intensive, inefficient, produces rough inspection data, and results are not provided in a timely manner. It also has a low level of information management and requires a high level of professional competence from the inspectors.

[0004] Currently, most track switches use an "H"-shaped running structure. During operation, four running wheels contact the top surface of the rails. When the track itself is uneven, this layout can easily cause a single running wheel to be suspended in the air during track geometry measurements in the switch area, resulting in inaccurate measurements of rail level and elevation. In addition, the running wheels in the "H"-shaped layout are fixed with a lateral distance smaller than the standard gauge, which can easily cause serpentine movement when passing through the switch area, leading to inaccurate track alignment measurements.

[0005] Currently, the main method for detecting the geometric condition of rails is to use a "T"-type hand-push inspection trolley to dynamically inspect the track geometry and appearance in the turnout area. This method has advantages such as high comprehensive performance, high precision, fast inspection speed, intelligence, and high reliability. However, the "T"-type hand-push track inspection trolley has poor maneuverability in the turnout section. In the frog area, the measuring wheel gets stuck and derails, making it impossible to pass through the harmful space of the turnout smoothly. It can only pass through the harmful space of the frog by using auxiliary tooling to connect and guide it. In addition, derailment is prone to occur in the turnout switch rail section, resulting in missing inspection data and failing to fully and accurately reflect the track condition in the turnout area. Utility Model Content

[0006] To address the technical challenge of existing hand-push track inspection trolleys being unable to effectively pass through turnout areas and frogs, this invention proposes a traveling device for railway turnouts. This device utilizes a T-shaped structure as the overall layout of the trolley and employs measuring wheels, guide wheels, ratchet wheels, and flexible connections to achieve smooth passage through turnout areas.

[0007] A running gear for railway turnouts includes: a T-shaped main frame rigidly connected by longitudinal beams and transverse beams; characterized in that it further includes:

[0008] The longitudinal beam traveling wheels are installed at the bottom of the longitudinal beam;

[0009] Crossbeam travel wheels are installed at the bottom of the crossbeam;

[0010] A guide wheel assembly for the longitudinal beam is installed at the end of the longitudinal beam;

[0011] The longitudinal beam tensioning wheel assembly is fixed to the longitudinal beam;

[0012] A beam tensioning wheel assembly is installed on the beam;

[0013] The measuring wheel is connected to the crossbeam via a spring guide rail;

[0014] The locking mechanism includes a wrench, a locking wheel axle, a steel wire rope, and a ratchet. The steel wire rope connects the locking wheel axle to the spring guide rail. The wrench drives the ratchet to rotate, which in turn causes the locking wheel axle to tighten the steel wire rope, thereby controlling the extension and retraction of the spring guide rail.

[0015] Horizontal compensation wheels and gauge compensation wheels are installed on the crossbeam or the longitudinal beam.

[0016] Preferably, the longitudinal beam and the transverse beam are connected by flange bolts, the longitudinal beam is a 60×80mm rectangular steel pipe, the transverse beam is a 50×70mm rectangular steel pipe, and the overall structural stiffness is ≥500N / mm.

[0017] Preferably, a laser indicator is provided on the outer side of the crossbeam tensioning wheel assembly and / or the longitudinal beam tensioning wheel assembly.

[0018] Preferably, the spring guide rail has a built-in preload spring and is rigidly connected to the measuring wheel by bolts.

[0019] Preferably, the longitudinal beam guide wheel assembly includes at least two pairs of guide wheels, symmetrically distributed on both sides of the end of the longitudinal beam.

[0020] The present invention also discloses a railway turnout detection system, characterized in that it includes the above-mentioned traveling device, and: a control unit, which is connected to the horizontal compensation wheel, the track gauge compensation wheel and the measuring wheel via a CAN bus; the horizontal compensation wheel is used to detect longitudinal track tilt, the track gauge compensation wheel is used to detect lateral track gauge deviation, and the measuring wheel is used for dynamic track gauge tracking.

[0021] Preferably, the CAN bus adopts the CAN2.0B protocol, with a transmission rate of 250kbps and a data update frequency of 1kHz.

[0022] Preferably, the control unit fuses the data from the horizontal compensation wheel, the track gauge compensation wheel, and the measuring wheel using Kalman filtering to output a comprehensive track gauge deviation value.

[0023] Preferably, the locking force of the crossbeam tensioning wheel group or the longitudinal beam tensioning wheel group is ≥100N, and the locking sequence is crossbeam tensioning wheel group → longitudinal beam tensioning wheel group → measuring wheel.

[0024] Preferably, the reset time of the spring guide rail is 1.5 ± 0.3 seconds, and the reset position repeatability is ± 0.2 mm. This utility model also discloses a railway turnout as a railway track system, which includes the above-mentioned traveling device that can pass through the railway turnout.

[0025] Beneficial effects

[0026] By leveraging the synergistic effect of the tensioning wheel assembly and the controllable measuring wheel, the problems of jamming and derailment of traditional inspection trolleys in the turnout area are effectively avoided.

[0027] It adopts a mechanical locking mechanism (ratchet + wire rope), which is simple and reliable to operate and can meet the needs of on-site operations.

[0028] The measuring wheel can automatically reset, ensuring the reliability, continuity, and accuracy of track gauge detection.

[0029] The use of tensioning rollers and controllable retraction measuring rollers ensures the smooth passage of the "T"-shaped trolley through hazardous spaces in the turnout area. This allows the "T"-shaped trolley to pass through the turnout area more conveniently and quickly, avoiding disruptions to track inspection data in the turnout area. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model.

[0031] Among them, 1 is the longitudinal beam tensioning wheel assembly; 2 is the longitudinal beam traveling wheel; 3 is the longitudinal beam guide wheel assembly; 4 is the longitudinal beam; 5 is the horizontal compensation wheel; 6 is the track gauge compensation wheel; 7 is the crossbeam; 8 is the wrench; 9 is the locking wheel axle; 10 is the spring guide rail; 11 is the measuring wheel; 12 is the traveling wheel; 13 is the crossbeam tensioning wheel assembly; 14 is the wire rope; and 15 is the ratchet. Detailed Implementation

[0032] Example 1

[0033] A traveling device that can pass through a railway turnout includes a longitudinal beam tensioning wheel assembly, longitudinal beam traveling wheels, longitudinal beam guide wheel assembly, longitudinal beam, horizontal compensation wheel, gauge compensation wheel, crossbeam, wrench, locking wheel axle, spring guide rail, measuring wheel, traveling wheels, crossbeam tensioning wheel assembly, wire rope, and ratchet. The longitudinal beam and crossbeam are arranged in a "T" shape, forming the main frame of the traveling device to support all components, ensuring structural stability and adapting to the complex track layout of the turnout section.

[0034] Traveling wheels (longitudinal beam traveling wheels 2 and 12): Longitudinal beam traveling wheels 2 are installed at the bottom of longitudinal beam 4, and traveling wheels 12 are installed at the bottom of crossbeam 7. These traveling wheels are used to bear the weight of the traveling device and move on the track, providing basic travel capability. Longitudinal beam 4 is made of 60×80mm rectangular steel pipe with a length of 1200mm; crossbeam 7 is made of 50×70mm rectangular steel pipe with a length of 800mm. The two are connected by flange bolts, and the overall structural rigidity is ≥500N / mm.

[0035] The guide wheel assembly (longitudinal beam guide wheel assembly 3) is installed at the beam end of the longitudinal beam 4 to guide the traveling device to move along the track direction and prevent derailment or deviation.

[0036] Tensioner sets (longitudinal beam tensioner set 1, crossbeam tensioner set 13): Longitudinal beam tensioner set 1 is fixed to longitudinal beam 4, and crossbeam tensioner set 13 is installed on crossbeam 7. When passing through a turnout, the tensioner set is manually locked on one side of the main rail to stabilize the car body posture and prevent tilting.

[0037] The crossbeam tensioning wheel assembly is tightened to the base rail by manually tightening the bolts. After locking, the wheel assembly fits tightly against the rail. A laser indicator is provided on the outside of the crossbeam tensioning wheel assembly 13. When the red light coincides with the outer edge of the rail, it indicates the correct positioning of the base rail.

[0038] Measuring wheel 11 and spring guide rail 10 are fixedly connected by bolts. The spring guide rail 10 is telescopic. Before passing through the harmful space of the turnout, the position is locked by a ratchet mechanism to prevent rebound. It dynamically adapts to changes in track gauge. The spring guide rail 10 uses a stainless steel helical spring.

[0039] Ratchet mechanism (wrench 8, locking wheel shaft 9, wire rope 14, ratchet 15): Wrench 8 drives ratchet 15 to rotate, which in turn drives locking wheel shaft 9 to tighten wire rope 14, controlling the extension and retraction of spring guide rail 10. Based on the manual control of the retraction and reset of measuring wheel 11, it ensures smooth passage through hazardous spaces and automatically resumes the detection state. Spring guide rail 10 has a built-in preloaded spring providing reset power.

[0040] Compensation wheels (horizontal compensation wheel 5, gauge compensation wheel 6): installed in auxiliary positions on the crossbeam 7 or longitudinal beam 4. The compensation wheels compensate for deviations in track level and gauge, further ensuring the stability and accuracy of track geometry data during operation; the horizontal compensation wheel 5 is used to correct the longitudinal tilt of the track, and the gauge compensation wheel 6 and the measuring wheel 11 work together to control the lateral gauge, with the data of the three linked together.

[0041] Horizontal compensation wheel 5 is used to detect longitudinal track tilt, track gauge compensation wheel 6 detects lateral track gauge deviation, and measuring wheel 11 is responsible for dynamic track gauge tracking. These three sets of data are transmitted to the control unit via a CAN bus. A Kalman filter algorithm is used to fuse the three sets of data, outputting a comprehensive track gauge deviation value. The CAN bus transmission uses the CAN2.0B protocol, with a transmission rate of 250kbps and a data update frequency of 1kHz.

[0042] Example 2

[0043] The traveling method of this utility model is based on a "T"-shaped layout. By coordinating the control of the longitudinal beam tensioning wheel group 1, the crossbeam tensioning wheel group 13, and the controllable shrinkage measuring wheel 11, the device ensures smooth passage through the hazardous space of a railway turnout. The specific steps are as follows:

[0044] (1) Normal walking phase

[0045] The longitudinal beam traveling wheels 2 and 12 roll along the track, providing the foundation with mobility.

[0046] The longitudinal beam guide wheel group 3 guides the direction and prevents deviation or derailment.

[0047] The measuring wheel 11 dynamically adapts to changes in track gauge under the action of the spring guide rail 10, ensuring smooth travel.

[0048] (2) Preparations before entering the hazardous space of the turnout

[0049] Manually lock the tensioner assembly:

[0050] The operator manually adjusts the crossbeam tensioning wheel assembly 13 to ensure it is tightly fitted against the base rail, preventing lateral displacement of the traveling device. The crossbeam tensioning wheel assembly 13 uses a manually rotated bolt to drive the clamping mechanism, ensuring a tight fit between the tensioning wheel and the base rail. Once locked, it provides a lateral support force ≥100N to prevent body tilting. The locking sequence should be: ① Crossbeam tensioning wheel assembly 13 → ② Longitudinal beam tensioning wheel assembly 1 → ③ Measuring wheel 11; the unlocking sequence is the reverse. After unlocking the ratchet, the spring guide rail completes its reset within 1.5±0.3 seconds, with a reset position repeatability of ±0.2mm.

[0051] The longitudinal beam tensioning wheel assembly 1 applies tension synchronously to stabilize the vehicle body posture.

[0052] Locking measuring wheel 11:

[0053] Rotate the wrench 8 to drive the ratchet 15 to drive the locking wheel shaft 9 to tighten the wire rope 14, so that the spring guide rail 10 and the measuring wheel 11 are kept in a fixed position to prevent rebound or jamming.

[0054] (3) Harmful space through turnout

[0055] After observing the turnout marker (an RFID reader is installed at the front end of the longitudinal beam to identify the turnout positioning tag), the operator stops advancing 0.2m away from the hazardous space, and sequentially locks the tensioning wheel set (first the crossbeam 13, then the longitudinal beam 1) and the measuring wheel 11. After confirming the locking status, the operator passes through at a constant speed and immediately unlocks the wheel after passing through. Under the combined action of the tensioning wheel set and the locking measuring wheel, the traveling device maintains a stable posture, avoiding bumps or derailment caused by track gaps.

[0056] The horizontal compensation wheel 5 and the track gauge compensation wheel 6 assist in the adjustment, further reducing vibration and deviation.

[0057] (4) Resetting after passing through the turnout.

[0058] Unlocking ratchet 15 loosens wire rope 14, and spring guide rail 10 pushes measuring wheel 11 to automatically reset, restoring dynamic detection function. Spring guide rail 10 uses stainless steel helical springs and is rigidly connected to measuring wheel 11 by bolts. When the track gauge changes, spring guide rail compresses or extends, keeping measuring wheel in contact with the track. Before passing the turnout, ratchet 15 locks wire rope 14, fixing the length of spring guide rail.

[0059] Loosen the crossbeam tension wheel assembly 13 to restore it to its free state, and the traveling device will continue to travel normally.

[0060] Tests have shown that the device can stably pass through standard turnouts such as No. 9, No. 12, and No. 18, with a passing speed of up to 1 m / s and a track gauge detection error of <0.3 mm.

[0061] Comparative tests show that the pass rate of traditional cars is only 65%, while the pass rate of this solution reaches 98%, and the data integrity rate is increased from 72% to 95%.

[0062] This invention features a crossbeam, longitudinal beam, and traveling wheels to ensure the traveling device can move on the track. The longitudinal beam guide wheel assembly guides the direction of the traveling device, and the guide wheels are installed at the ends of the longitudinal beam. The spring guide rail and measuring wheel are bolted together to ensure smooth movement of the traveling device when the track gauge changes. The longitudinal beam tension wheel assembly is fixedly connected to the longitudinal beam. When passing through a turnout section, the tension wheel on one side of the main rail can be manually locked to maintain the vehicle's traveling posture. Before the traveling device passes through the hazardous space of the turnout, rotating the wrench activates the ratchet, which drives the locking wheel axle to tighten the wire rope, preventing the spring guide rail and measuring wheel from springing back, ensuring the traveling device smoothly passes through the hazardous space of the turnout area. After passing through the hazardous space, unlocking the ratchet automatically resets the measuring wheel, allowing the traveling device to smoothly pass through the turnout area.

[0063] This invention addresses the problem that existing track inspection trolleys cannot effectively pass through turnouts by innovating a technology that utilizes a tension wheel and a ratchet to controllably retract the measuring wheel. This ensures that the "T"-shaped trolley can smoothly pass through the harmful space in the turnout area, guaranteeing the reliability and continuity of track geometry measurement in the turnout area and preventing wheel collisions, wheel entrapment, and track climbing that can occur during the measurement process of traditional track inspection trolleys.

[0064] This utility model can serve as a carrier for turnout inspection equipment, effectively solving the problem that existing track inspection trolleys cannot detect the track condition in turnout areas, thus ensuring rapid detection of track geometric and structural parameters in turnout areas. The basic principles, main features, and advantages of this utility model have been shown and described above. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A traveling device for railway turnouts, comprising: The T-shaped main frame is formed by the rigid connection of the longitudinal beams (4) and the transverse beams (7); characterized in that it further includes: The longitudinal beam traveling wheel (2) is installed at the bottom of the longitudinal beam (4); Crossbeam travel wheels (12) are installed at the bottom of the crossbeam (7); The longitudinal beam guide wheel assembly (3) is installed at the end of the longitudinal beam (4); The longitudinal beam tensioning wheel assembly (1) is fixed to the longitudinal beam (4); A crossbeam tensioning wheel assembly (13) is installed on the crossbeam (7); The measuring wheel (11) is connected to the crossbeam (7) via a spring guide rail (10); The locking mechanism includes a wrench (8), a locking wheel shaft (9), a steel wire rope (14), and a ratchet (15). The steel wire rope (14) connects the locking wheel shaft (9) to the spring guide rail (10). The wrench (8) drives the ratchet (15) to rotate, thereby causing the locking wheel shaft (9) to tighten the steel wire rope (14) and control the extension and retraction of the spring guide rail (10). The horizontal compensation wheel (5) and the track gauge compensation wheel (6) are installed on the crossbeam (7) or the longitudinal beam (4).

2. The traveling device according to claim 1, characterized in that, The longitudinal beam (4) and the transverse beam (7) are connected by flange bolts. The longitudinal beam (4) is a 60×80mm rectangular steel pipe, and the transverse beam (7) is a 50×70mm rectangular steel pipe. The overall structural stiffness is ≥500N / mm.

3. The traveling device according to claim 1, characterized in that, Laser indicators are provided on the outer side of the crossbeam tensioning wheel assembly (13) and / or the longitudinal beam tensioning wheel assembly (1).

4. The traveling device according to claim 1, characterized in that, The spring guide rail (10) has a built-in preloaded spring and is rigidly connected to the measuring wheel (11) by bolts.

5. The traveling device according to claim 1, characterized in that, The longitudinal beam guide wheel assembly (3) includes at least two pairs of guide wheels, symmetrically distributed on both sides of the end of the longitudinal beam (4).

6. A railway turnout detection system, characterized in that, Includes the traveling device according to any one of claims 1-5, and: The control unit is connected to the horizontal compensation wheel (5), the track gauge compensation wheel (6) and the measuring wheel (11) via a CAN bus; The horizontal compensation wheel (5) is used to detect longitudinal track tilt, the track gauge compensation wheel (6) is used to detect lateral track gauge deviation, and the measuring wheel (11) is used for dynamic track gauge tracking.

7. The system according to claim 6, characterized in that, The CAN bus adopts the CAN2.0B protocol, with a transmission rate of 250kbps and a data update frequency of 1kHz.

8. The system according to claim 6, characterized in that, The control unit fuses the data from the horizontal compensation wheel (5), the gauge compensation wheel (6), and the measuring wheel (11) through Kalman filtering, and outputs a comprehensive gauge deviation value.

9. The system according to claim 6, characterized in that, The locking force of the crossbeam tensioning wheel group (13) or the longitudinal beam tensioning wheel group (1) is ≥100N, and the locking sequence is crossbeam tensioning wheel group (13) → longitudinal beam tensioning wheel group (1) → measuring wheel (11).

10. The system according to claim 6, characterized in that, The reset time of the spring guide rail (10) is 1.5 ± 0.3 seconds, and the reset position repeatability is ± 0.2 mm.

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