A device for detecting the rail gauge maintaining ability

Abstract

An embodiment of the present invention provides a detection device for the railway gauge maintaining ability, including: a carrying platform; a force loading component, which is installed on the carrying platform, and the force application end of the force loading component is used to apply a static loading force on one side of the railway track; a force measuring component, which is used to measure the static loading force when the track is in a critical equilibrium state. The present invention realizes the quantitative measurement of the railway gauge maintaining ability, and can thus understand the possible potential faults of the railway track in real time. It not only has a low detection cost and high efficiency, but also can quantify the maintenance quality of the railway inspection line, ensuring the safety and reliability of railway operation.

Description

Technical Field

[0001] The present invention relates to the technical field of railway detection, and particularly to a railway gauge maintaining ability detection device. Background Art

[0002] Track maintenance technology is an important part of the high-speed railway technology system and is a necessary guarantee for ensuring the high reliability, high stability, and high smoothness of railway operation. At present, railway track inspections mainly use integrated inspection trains and flaw detection vehicles to monitor the dynamic geometric state of the track and the damage state of the rail. At the same time, static track irregularity inspections are carried out in combination with track measuring instruments and track inspection instruments.

[0003] Integrated inspection trains mainly use inertial reference platforms equipped with gyroscopes and accelerometers, laser measurement devices, and positioning devices to detect the geometric state of the track and the acceleration of vehicle dynamic response. Flaw detection vehicles mainly use the ultrasonic method to detect rail damage and can detect fatigue defects and welding defects within the rail head and web (including near joints). At the same time, flaw detection vehicles are equipped with automatic recording equipment to record rail damage signals, mileage signals, and line characteristic signals.

[0004] At the same time, track measuring instruments and track inspection instruments mainly consist of a frame, a sensor detection system, and a data acquisition processor. Among them, the frame is composed of a left measuring arm, a right measuring arm, and a measuring spindle to form an "H" shape. The left and right measuring arms are parallel and correspond to the left and right tracks respectively. Walking mechanisms are provided on both the left and right measuring arms, and the measuring spindle is perpendicular to the left and right measuring arms. A gauge sensor and a level sensor are arranged in the measuring spindle to complete the measurement of the gauge and level parameters of the track. High-low and alignment sensors are installed in the middle of both the left and right measuring arms to simultaneously detect the high, low, and alignment of the left and right tracks.

[0005] However, existing track detection devices such as integrated inspection trains, flaw detection vehicles, track measuring instruments, and track inspection instruments can only detect the static geometric parameters of the track and are difficult to detect the gauge maintaining ability of the track. At the same time, due to the occlusion of the corresponding underpad of the track, it is difficult to visually detect the possible reaming of the bolt holes connecting the underpad and the sleeper by the naked eye. When the bolt holes of the sleeper are reamed, the track will not be able to maintain the gauge and is likely to move outward under the action of the train, resulting in derailment of the running train or even a derailment accident. In addition, when the sleeper decays and loses its bearing capacity and the nail holes cannot hold nails due to decay, there will also be significant problems with the gauge maintaining ability of the track, which also poses high requirements for railway track maintenance and repair.

[0006] In the existing public literature, the calculation and analysis of the gauge-holding ability of heavy-haul railway elastic support block ballastless tracks are proposed. It is based on the comparison between the calculation results of a single-node full-scale model of the elastic support block ballastless track structure and the indoor test results, verifying the correctness of the single-node full-scale model. On this basis, a multi-node full-scale model is established to analyze the influence laws of the support block size and the stiffness of track components on the gauge-holding ability of the track, and the relationships between the support block size, the lateral stiffness of the support block boot, and the gauge-holding ability are obtained. However, the solution shown in this literature does not achieve the quantitative measurement of the gauge-holding ability of the track either. Summary of the Invention

[0007] An embodiment of the present invention provides a railway gauge-holding ability detection device to solve the problems that the existing track detection equipment can only detect the static geometric parameters of the track, it is difficult to detect the gauge-holding ability of the track, and it is difficult to quantitatively measure the gauge-holding ability.

[0008] An embodiment of the present invention provides a railway gauge-holding ability detection device, including: a carrying platform; a force loading component, the force loading component is installed on the carrying platform, and the force application end of the force loading component is used to apply a static loading force on one side of the railway track; a force measuring component, the force measuring component is used to measure the static loading force when the track is in a critical equilibrium state.

[0009] For the railway gauge-holding ability detection device according to an embodiment of the present invention, the force loading component includes a hydraulic cylinder. Correspondingly, the force measuring component includes a pressure gauge, and the pressure gauge is installed on the hydraulic oil path of the hydraulic cylinder.

[0010] For the railway gauge-holding ability detection device according to an embodiment of the present invention, the force measuring component includes a force sensor, and the force sensor is installed at the force application end of the force loading component.

[0011] For the railway gauge-holding ability detection device according to an embodiment of the present invention, the force application direction of the force application end of the force loading component is vertically towards the web of the track.

[0012] For the railway gauge-holding ability detection device according to an embodiment of the present invention, there are two force loading components, which are respectively opposite to the two tracks one by one.

[0013] For the railway gauge-holding ability detection device according to an embodiment of the present invention, the force application directions of the force application ends of the force loading components are arranged in an opposite or back-to-back manner along the same straight line direction.

[0014] For the railway gauge-holding ability detection device according to an embodiment of the present invention, the carrying platform is used to be movably placed on the track.

[0015] A railway gauge maintaining ability detection device according to an embodiment of the present invention, a traveling mechanism and a guiding mechanism for matching with the track are installed on the carrying platform.

[0016] A railway gauge maintaining ability detection device according to an embodiment of the present invention, the carrying platform includes a first longitudinal arm, a second longitudinal arm and a transverse arm, one end of the transverse arm is connected to the first longitudinal arm, and the other end is connected to the second longitudinal arm. The first longitudinal arm and the second longitudinal arm are used to face two tracks respectively. The traveling mechanism and the guiding mechanism are installed on both the first longitudinal arm and the second longitudinal arm, and a force loading component is installed on the transverse arm.

[0017] A railway gauge maintaining ability detection device according to an embodiment of the present invention further includes: a positioning module and a display module, and the force measuring component and the positioning module are respectively communicatively connected to the display module.

[0018] A railway gauge maintaining ability detection device according to an embodiment of the present invention further includes: a data acquisition module, a processing module and a storage module. The force measuring component and the positioning module are respectively communicatively connected to the data acquisition module, the data acquisition module is communicatively connected to the processing module, and the processing module is communicatively connected to the display module and the storage module.

[0019] The railway gauge maintaining ability detection device provided by the embodiment of the present invention provides a stable force application support for the force loading component through the carrying platform, and the force application end of the force loading component can apply a static loading force on one side of the railway track, so that the track gradually changes from the initial state to the critical equilibrium state under the action of the static loading force until it generates a lateral movement. During this process, by measuring the static loading force when the track is in the critical equilibrium state through the force measuring component, the quantitative measurement of the railway gauge maintaining ability can be realized, so as to understand the possible potential faults of the railway track in real time. It not only has low detection cost and high efficiency, but also can quantify the maintenance quality of the railway inspection line, ensuring the safety and reliability of railway operation. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a railway gauge maintaining ability detection device provided by an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the control structure of a railway gauge maintaining ability detection device provided by an embodiment of the present invention.

[0023] In the figure, 1 is a track; 2 is a carrying platform; 21 is a first longitudinal arm; 22 is a second longitudinal arm; 23 is a transverse arm; 3 is a traveling mechanism; 4 is a guiding mechanism; 5 is a force loading component; 6 is a force measuring component; 7 is a positioning module; 8 is a data acquisition module; 9 is a processing module; 10 is a storage module; 11 is a display module. Specific implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] Refer to Figure 1 , this embodiment provides a railway gauge maintaining ability detection device, including: a carrying platform 2; a force loading component 5, the force loading component 5 is mounted on the carrying platform 2, and the force application end of the force loading component 5 is used to apply a static loading force on one side of the railway track 1; a force measuring component 6, the force measuring component 6 is used to measure the static loading force when the track 1 is in a critical equilibrium state.

[0027] Specifically, for the detection device shown in this embodiment, the carrying platform 2 provides a stable force application support for the force loading component 5, so that the force application end of the force loading component 5 can apply a static loading force on one side of the railway track 1, so that the track 1 gradually changes from the initial state to the critical equilibrium state under the action of the static loading force until lateral movement occurs. During this process, by measuring the static loading force when the track 1 is in the critical equilibrium state through the force measuring component 6, the quantitative measurement of the railway gauge maintaining ability can be realized, so as to understand the possible fault hidden dangers of the railway track in real time. It not only has low detection cost and high efficiency, but also can quantify the maintenance quality of the railway maintenance line, ensuring the safety and reliability of railway operation.

[0028] It should be noted here that the force loading component 5 shown in this embodiment can be an electric push rod, a cylinder, a hydraulic cylinder, etc. Since the hydraulic cylinder can load a large force load and apply force stably, the force loading component 5 in this embodiment is preferably a hydraulic cylinder. One side of the track 1 shown in this embodiment can be understood as the left or right side along the length direction of the track 1, which is not specifically limited here. At the same time, the critical equilibrium state shown in this embodiment can be understood as the static state of the track 1 at the moment before it starts to move laterally. In the critical equilibrium state, the static loading force applied to the track reaches the maximum value.

[0029] In addition, it should also be pointed out that in the prior art, track detection equipment such as comprehensive inspection trains, flaw detection vehicles, track measuring instruments, and track inspection instruments are usually used to detect the static geometric parameters of the track, and there is rarely a quantitative detection of the gauge holding ability of the track. The reason is that existing technicians have cognitive misunderstandings and research blind spots in the research on the gauge holding ability. The main research direction is to determine the influencing factors of the gauge holding ability to enhance the gauge holding ability of the railway. For example, in the patent document with the patent application number 201721274133.3, it is disclosed that the gauge holding ability is improved by setting fasteners that limit the swing of the rail; in the railway construction journal, "Calculation and Analysis of the Gauge Holding Ability of Elastic Support Block Ballast Tracks for Heavy Haul Railways" is published, which mainly studies the influence of the lateral stiffness of the support blocks and support block boots of the track on the gauge holding ability. It is precisely because of the cognitive misunderstandings and research blind spots of existing technicians that the quantitative measurement of the gauge holding ability of the railway has not been realized, and it has not been further thought to improve the maintenance and repair specifications of the railway line and the quality standard of the railway line through quantitative measurement methods to avoid unnecessary safety accidents caused by reasons such as the decay of the sleeper losing its bearing capacity and the decay of the nail holes unable to hold nails.

[0030] Preferably, in this embodiment, the carrying platform 2 is used to be movably placed on the track 1. Thus, based on the movable function of the carrying platform 2, long-distance measurement operations can be carried out on the railway track 1.

[0031] Specifically, a traveling mechanism 3 and a guiding mechanism 4 for matching with the track 1 are installed on the carrying platform 2 shown in this embodiment. Among them, the traveling mechanism 3 includes a traveling drive motor and traveling wheels. The output end of the traveling drive motor is connected to the traveling wheels, and the traveling wheels are placed on the track 1. The rotation state of the traveling drive motor can be controlled by remote control. The guiding mechanism 4 can be a roller guide shoe adapted to the track 1, or a guiding groove or guiding block adapted to the outer shape of the track 1, etc. In this way, based on the driving force provided by the traveling mechanism 3 and the guiding function of the guiding mechanism 4, the carrying platform 2 can walk stably along the railway track 1 by itself, so as to measure the gauge holding ability at various positions along the track 1.

[0032] Meanwhile, based on the guiding mechanism 4, the carrying platform 2 can also be stably placed on the track 1, ensuring the stability of the carrying platform 2 during the measurement process, and preventing the inaccurate measurement of the gauge maintaining ability of the track 1 due to the instability of the carrying platform 2.

[0033] In a further preferred embodiment, in order to miniaturize and make the carrying platform 2 portable, the carrying platform 2 shown in this embodiment includes a first longitudinal arm 21, a second longitudinal arm 22, and a transverse arm 23. One end of the transverse arm 23 is connected to the first longitudinal arm 21, and the other end is connected to the second longitudinal arm 22. The first longitudinal arm 21 and the second longitudinal arm 22 are used to face the two tracks 1 one by one. Travel mechanisms 3 and guiding mechanisms 4 are installed on both the first longitudinal arm 21 and the second longitudinal arm 22, and a force loading component 5 is installed on the transverse arm 23. Among them, the first longitudinal arm 21, the second longitudinal arm 22, and the transverse arm 23 can be specifically arranged in an "H" shape. Also, a handrail can be provided on the transverse arm 23 to facilitate the staff to temporarily manually push the carrying platform 2 to move along the track 1 through the handrail.

[0034] In one preferred embodiment, the force loading component 5 shown in this embodiment includes a hydraulic cylinder. Correspondingly, the force measuring component 6 includes a pressure gauge, and the pressure gauge is installed on the hydraulic oil circuit of the hydraulic cylinder; and / or, the force application direction of the force application end of the force loading component 5 is used to vertically face the web of the track 1. The force application end of the force loading component 5 can be specifically connected to one end of a transfer beam, and the other end of the transfer beam vertically faces the web of the track 1 along the force application direction.

[0035] Specifically, when the force loading component 5 shown in this embodiment is preferably a hydraulic cylinder, based on the well-known hydraulic force measuring principle in the art, through the pressure gauge installed on the hydraulic oil circuit of the hydraulic cylinder, the static loading force exerted by the hydraulic cylinder on the track 1 can be accurately measured. Among them, during hydraulic force measurement, since the hydraulic cylinder exerts a static loading force on the track 1 through its piston rod, the track 1 gives an equal-sized reaction force to the piston rod of the hydraulic cylinder. The piston of the hydraulic cylinder evenly transmits the reaction force to the hydraulic oil in the sealed cylinder, and the force received per unit area by the hydraulic oil is reflected on the pressure gauge, thereby realizing the quantitative display of the railway gauge maintaining ability.

[0036] In a further preferred embodiment, in order to simultaneously realize the quantitative measurement of the gauge maintaining abilities of the two tracks 1, two hydraulic cylinders are specifically provided in this embodiment. The two hydraulic cylinders face the two tracks 1 one by one. Among them, for the arrangement of the two hydraulic cylinders relative to their corresponding tracks 1, the orientations of the telescopic ends (force application ends) of the hydraulic cylinders can be either the same or opposite, and no specific limitation is made here.

[0037] In a further preferred embodiment, in order to prevent the carrying platform 2 from being unstable due to unidirectional force or unable to maintain a stable state due to uneven force when quantitatively measuring the railway gauge maintaining ability, two hydraulic cylinders as shown in this embodiment may be specifically provided, and the directions of the telescopic ends of the two hydraulic cylinders may be specifically set to be arranged in opposite or back-to-back directions along the same straight line, so as to ensure that the carrying platform 2 remains stable during measurement.

[0038] In another preferred embodiment, the force measuring component 6 shown in this embodiment may adopt a force sensor well-known in the art, and the force sensor is installed at the force applying end of the force loading component 5. Thus, when the force loading component 5 applies a static loading force to one side of the track 1, the force sensor will be clamped between the force applying end of the force loading component 5 and the track 1, so that the static loading force applied by the force loading component 5 to the track 1 can be directly reflected by the force sensor.

[0039] As Figure 2 shown, based on the improvement of the above embodiment, this embodiment further includes: a positioning module 7 and a display module 11, and the force measuring component 6 and the positioning module 7 are respectively communicatively connected to the display module 11.

[0040] Specifically, the positioning module 7 shown in this embodiment may be a GPS positioning module or a Beidou positioning module well-known in the art, and the geographical location information of the current detection of the track 1 can be obtained based on the positioning module 7. The display module 11 shown in this embodiment may be a liquid crystal display well-known in the art, and the corresponding measurement data of the gauge maintaining ability and the current position coordinates can be synchronously displayed based on the display module 11, and the current detection position can be displayed in a map form based on the information collected by the positioning module 7.

[0041] As Figure 2 shown, in a further preferred embodiment, this embodiment further includes: a data acquisition module 8, a processing module 9 and a storage module 10. The force measuring component 6 and the positioning module 7 are respectively communicatively connected to the data acquisition module 8, the data acquisition module 8 is communicatively connected to the processing module 9, and the processing module 9 is communicatively connected to the display module 11 and the storage module 10.

[0042] Specifically, the data acquisition module 8 shown in this embodiment can be an analog quantity acquisition module well-known in the art. The data acquisition module 8 respectively receives the data collected by the force measuring component 6 and the positioning module 7, and performs analog-to-digital conversion on the corresponding analog quantity data. The data acquisition module 8 can be communicatively connected to the processing module 9 through an RS485 interface. The processing module 9 can be a single-chip microcomputer or a PLC controller well-known in the art. The storage module 10 can be an SD card or a USB flash drive well-known in the art. The processing module 9 is communicatively connected to the SD card through an SD card slot, or communicatively connected to the USB flash drive through a USB socket, and is communicatively connected to the display module 11 through a serial port. Here, the processing module 9 synchronously displays the processed measurement data representing the gauge maintaining ability through the display module 11, and can perform corresponding data storage through the storage module 10.

[0043] Meanwhile, the processing module 9 also performs analysis and processing based on the stress state of the track 1, and conducts hierarchical alarms through the display module 11. It is set that when the track 1 is in a critical equilibrium state, the static loading force applied to the track 1 by the force loading component 5 is represented as F. When F < 4 KN, it indicates that the gauge maintaining ability of the track 1 is poor, and at this time, a red alarm warning is given through the display module 11; when 4 KN ≤ F < 10 KN, it indicates that the gauge maintaining ability of the track 1 will show an adverse development trend, and at this time, a yellow alarm prompt is given through the display module 11; when 10 KN ≤ F ≤ 16 KN, it indicates that the gauge maintaining ability of the track 1 is in the normal range, and at this time, a blue prompt is given through the display module 11; when F > 16 KN, it indicates that the gauge maintaining ability of the track 1 is good, and at this time, a green prompt is given through the display module 11.

[0044] To sum up, the detection device shown in this embodiment can realize the automatic quantitative detection of the gauge maintaining ability of railway tracks, can be applicable to large-scale and long-distance detection operations, has strong adaptability, and can be applicable to extreme detection environments such as low temperature, strong light, and strong wind. The specific applicable environmental temperature range is -40° - 70°, and the humidity is 10% - 90%. The detection accuracy is not affected. At the same time, it has high working stability, can work continuously without obstacles for 24 hours throughout the year, greatly improves the automation and intelligent level of railway line maintenance, avoids the influence of factors such as fatigue and experience of maintenance personnel on the maintenance quality, saves a large amount of labor resources, reduces the maintenance cost, improves the maintenance efficiency, and can play an important role in the field of high-speed railway maintenance, providing a strong guarantee for ensuring the safety, reliability, comfort, and punctuality of railway operation.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A railway gauge maintaining ability detection device, characterized in that, Comprising: A carrying platform, which is used to be movably placed on the track, and a traveling mechanism and a guiding mechanism that match the track are installed on the carrying platform; A force loading component, which is installed on the carrying platform, and the force application end of the force loading component is used to apply a static loading force on one side of the railway track; A force measuring component, which is used to measure the static loading force when the track is in a critical equilibrium state, so as to realize the quantitative measurement of the railway gauge maintaining ability; The force application direction of the force application end of the force loading component is vertically oriented towards the web of the track; there are two force loading components, which are respectively opposite to the two tracks; the force application directions of the force application ends of the force loading components are arranged in an opposite or facing direction along the same straight line direction; The critical equilibrium state refers to the static state of the track at the moment before it starts to move laterally. In the critical equilibrium state, the static loading force applied to the track reaches the maximum.

2. The railway gauge holding capacity detection device according to claim 1, wherein The force loading component includes a hydraulic cylinder. Correspondingly, the force measuring component includes a pressure gauge, and the pressure gauge is installed on the hydraulic oil circuit of the hydraulic cylinder.

3. The railway gauge holding capacity detection device according to claim 1, characterized in that The carrying platform includes a first longitudinal arm, a second longitudinal arm and a transverse arm. One end of the transverse arm is connected to the first longitudinal arm, and the other end is connected to the second longitudinal arm. The first longitudinal arm and the second longitudinal arm are used to be respectively opposite to the two tracks. The traveling mechanism and the guiding mechanism are installed on both the first longitudinal arm and the second longitudinal arm, and the force loading component is installed on the transverse arm.

4. The railway gauge maintaining ability detection device according to any one of claims 1 to 3, characterized in that, Also comprising: A positioning module and a display module, and the force measuring component and the positioning module are respectively communicatively connected to the display module.

5. The railway gauge holding capacity detection device according to claim 4, characterized in that Also comprising: A data acquisition module, a processing module and a storage module. The force measuring component and the positioning module are respectively communicatively connected to the data acquisition module. The data acquisition module is communicatively connected to the processing module. The processing module is communicatively connected to the display module and the storage module.

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