CN115406353B - Mobile inspection device for detecting abnormal structural rigidity layering of railway track - Google Patents
Mobile inspection device for detecting abnormal structural rigidity layering of railway track Download PDFInfo
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- CN115406353B CN115406353B CN202211056439.7A CN202211056439A CN115406353B CN 115406353 B CN115406353 B CN 115406353B CN 202211056439 A CN202211056439 A CN 202211056439A CN 115406353 B CN115406353 B CN 115406353B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The invention relates to a movable inspection device for detecting abnormal structural rigidity layering of a railway track, which comprises a power movable frame, wherein a group of loading wheel pairs and two groups of running wheel pairs are arranged below the power movable frame; a counter-force frame is fixedly arranged above the power moving frame, and a vertical pressing device is arranged between the counter-force frame and the loading wheel set wheel shaft; a rail holding wheel set is arranged below the power moving frame and provides counter force for vertical downward pressure applied by the vertical pressing device; the data processing system receives data acquired by the axle counter, the ranging sensor, the wheel force sensor and the structural light sensor, and carries out layering identification of rubber pad failure under the rail, fastener dislocation and sleeper empty hanging. The invention fills the blank of lack of track structure rigidity rapid inspection and rigidity layering identification technology and equipment in railway daily work detection operation, and is suitable for high-efficiency and flexible mobile track structure rigidity abnormal layering detection in a short skylight period.
Description
Technical Field
The invention relates to a mobile inspection device for detecting abnormal structural rigidity layering of a railway track.
Background
For common-speed and high-speed railway lines, the structural rigidity of the rail has direct influence on the running performance of the vehicle, wherein the most direct influence factors include the loss, looseness and dislocation of fasteners, failure of rubber pads under the rail, empty hanging of sleeper and the like. Therefore, the method has obvious engineering significance in developing daily movable inspection of the layered rigidity of the railway track structure.
At present, railway track rigidity detection is mainly divided into local in-situ detection and dynamic detection based on a large loading vehicle. The rubber pad, fastener, sleeper under the rail on the railway line are discrete and numerous in space, and the local normal position detection through fixed reaction frame can only be used for rigidity detection at a limited number of points on the line, and the distribution condition of the structural rigidity of the rail on the line can not be obtained. The rapid detection of the integral rigidity of the local section of the railway subgrade can be realized based on the large-scale mobile loading vehicle, but the layered identification of the abnormal rigidity caused by the failure of the rubber pad under the lower rail of the rail, the lack of the fastener, the empty hanging of the sleeper and the like cannot be realized. The large-scale loading vehicles are small in number and long in detection period interval (often once in half a year), the daily temporary or emergency work detection requirement of the station section on the line rigidity cannot be met, and the work requirement of the line operation and maintenance management department on the daily detection of the layered rigidity state of the track structure of the station section long-distance line is difficult to meet. In addition, the two detection modes can only detect the abnormal rigidity of the whole cross section of the line, and the rigidity and abnormal rigidity of each layer are difficult to accurately detect and identify in a layering manner.
Therefore, the design of the rapid movement detection device suitable for realizing the layered rigidity daily inspection of the long and large railway track structure in a short skylight period has great engineering value and practical significance. The daily detection method and equipment technology research of the layered rigidity of the railway track structure under the condition of rapid movement at home and abroad are still in a blank stage.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a movable inspection device for detecting abnormal structural rigidity layering of a railway track, which can realize rapid inspection and abnormal rigidity layering identification of the structural rigidity of the track such as non-contact type rubber pad failure under the railway track, abnormal fasteners, empty sleeper hanging and the like under the condition of rapid movement, and is suitable for railway lines with the characteristics of heavy transportation tasks and short skylight period, in particular to ballastless and ballastless track structural rigidity daily rapid inspection of high-speed railway lines. Compared with the manual work detection mode, the detection efficiency and the intelligent degree are obviously improved, the labor cost and the subjective factor interference are reduced, and the method has practical engineering application value.
The technical scheme for solving the problems is as follows: the mobile inspection device for detecting abnormal structural rigidity of railway track in a layered manner is characterized in that,
The system comprises a power moving frame, a wheel force sensor, a distance measuring sensor, a structure light sensor, a shaft counter and a data processing system;
A loading wheel pair and two groups of running wheel pairs are arranged below the power moving frame, and the loading wheel pair is positioned between the two groups of running wheel pairs;
a counter-force frame is fixedly arranged above the power moving frame, and a vertical pressing device is arranged between the counter-force frame and the loading wheel set wheel shaft; the rail holding wheel pair is arranged below the power moving frame and connected with the chassis of the moving frame through a rigid rod piece, and the rail holding wheel pair provides counter force for vertical downward pressure applied by the vertical pressing device;
The wheel force sensor is used for acquiring the real-time vertical wheel rail force of any wheel in the loading wheel set and the running wheel set in real time;
the distance measuring sensor is used for respectively acquiring the vertical displacement of the upper surface of the rail bottom of the steel rail relative to the upper surface of the rail bearing table or the sleeper when the travelling wheel set and the loading wheel set pass through the steel rail above the rubber pad under the rail;
The structural light sensor is used for acquiring the spatial form and position characteristics of the fastener of the ballastless track line section and the upper surface of the rail bearing shoulder, and the spatial form and position characteristics of the fastener of the ballastless track line section, the sleeper shoulder and the upper surface of the railway ballast nearby the sleeper shoulder;
the axle counter acquires moving mileage data;
The data processing system receives data acquired by the axle counter, the ranging sensor, the wheel force sensor and the structural light sensor, and comprises a wheel force value, a relative vertical displacement value and three-dimensional spatial position characteristics of a fastener when a walking wheel and a loading wheel pass through a rail-ballastless track bearing platform (ballastless track sleeper) -ballasted track ballasted surface layer, calculates the rigidity of an under-rail rubber cushion, and performs layered identification of abnormal rigidity such as failure of the under-rail rubber cushion, abnormal fastener position, empty sleeper suspension and the like.
Further, the vertical pressing device is used for connecting the rigid loading wheel set and the power moving frame, and applying vertical downward pressure to the loading wheel set and transmitting the vertical downward pressure to the two steel rails; the lower end of the vertical pressing device is embedded into integrated vertical limiting grooves symmetrically arranged on the wheel shaft, the circumferential translational degree of freedom is limited, the loading wheel and the wheel shaft realize relative rotation, the upper end of the vertical pressing device is limited by the counter-force frame, the rigid counter-force frame provides vertical displacement constraint for the upper end of the vertical pressing device, and the protruding annular structure at the upper end of the vertical pressing device prevents the upper end of the vertical pressing device from slipping from the counter-force frame.
Further, the rail holding wheel pair provides counter force for vertical downward pressure applied to the steel rail in the moving and loading process; the rail holding wheel is connected with the chassis of the power moving frame through a rigid rod, and the rigid rod has a rotation freedom degree along the rod axis direction. The rim of the rail holding wheel pair is in rolling contact with the lower edge surface of the rail head of the steel rail.
Further, the rail holding wheel pairs are symmetrically arranged along the left side and the right side of the chassis, and the loading wheel pairs are longitudinally and longitudinally arranged in a front-back symmetrical mode.
Further, the wheel force sensors are respectively installed at the wheel axle center positions of the running wheel set and the loading wheel set.
Further, the number of the ranging sensors is two, the two ranging sensors are arranged on the lower surfaces of two sides of the chassis of the movable frame, and the two ranging sensors are respectively aligned with the loading wheel set and the traveling wheel set in the same cross section.
Further, the axle counter is arranged on the wheel axle of the running wheel set.
Furthermore, the optical sensor with the structure is symmetrically arranged at two sides of the lower surface of the chassis of the movable frame and is positioned at the same section with the loading wheel pair.
Further, the data processing system is a vehicle-mounted microcomputer, which can be fixed on the power moving frame.
Furthermore, the data processing system realizes the transmission and storage of data of the axle counter, the ranging sensor and the wheel force sensor in a wireless or wired mode.
The invention has the advantages that:
The invention provides a movable inspection device for detecting abnormal structural rigidity layering of a railway track, which has the advantages of simple structural form, wide detection range, light weight and flexibility, and can realize the detection and synchronous layering identification of the structural rigidity of ballastless and ballastless tracks, such as failure of rubber pads under the tracks, abnormal fasteners, empty hanging of sleepers and the like. The detection device utilizes the ranging sensor and the wheel force sensor to obtain the rigidity of the rubber cushion by obtaining the relative vertical compression amount of the steel rail and the wheel rail force when the running wheel and the loading wheel pass through the steel rail above the rubber cushion under the rail in a moving state, and the structured light can obtain abnormal states such as the missing and the abnormal position of the fasteners at the two sides of the rubber cushion under the steel rail and the rail. When the railway track structure layering rigidity calculated value is abnormal, a three-dimensional scanning result is called to judge the abnormality of the fastener. The detection process can not pollute and destroy the track structure and the surrounding environment, and has obvious positive significance for improving the inspection efficiency and the intelligent degree and reducing the labor cost.
Drawings
FIG. 1 is a schematic perspective view of a layered stiffness mobile inspection device for a railway track structure;
FIG. 2 is a cross-sectional view of the vertical loading architecture in the mobile condition shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the rail wheel set and rail member of FIG. 1;
fig. 4 is a schematic perspective view of the ranging sensor shown in fig. 1;
FIG. 5 is a schematic perspective view of the structured light sensor shown in FIG. 1;
fig. 6 is a left side view of fig. 1.
In the figure: 1. the device comprises a power moving frame, a loading wheel set, a wheel force sensor, a vertical pressing device, a counterforce frame, a rail holding wheel set, a ranging sensor, a structural light sensor, a traveling wheel set, a shaft counter, a rail under-rail rubber cushion, a fastener, a data processing system and a rail bearing platform or sleeper.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Referring to fig. 1-6, the invention provides a mobile inspection device for detecting abnormal structural rigidity layering of a railway track, which comprises a power mobile frame 1, a loading wheel set 2, a wheel force sensor 3, a vertical pressing device 4, a counter-force frame 5, a rail holding wheel set 6, a ranging sensor 7, a structural light sensor 8, a running wheel set 9, a shaft counter 10 and a data processing system 14.
The power moving frame 1 is coupled and moved with the surface of the steel rail 12 through the traveling wheel set 9. A loading wheel set 2 is arranged below the middle part of the movable frame 1, and a reaction frame 5 is welded above the platform. A vertical pressing device 4 is arranged between the counter-force frame 5 and the wheel shaft of the loading wheel set 2, a wheel force sensor 3 is arranged at the wheel shaft of the running wheel set 9 and the wheel shaft of the loading wheel set 2, the lower surface of the movable frame 1 is in rolling contact with the lower edge surface of the rail head through a rail holding wheel set 6 connected with a rigid rod, distance measuring sensors 7 are arranged at the same vertical section positions of the lower surfaces of the two sides of the movable frame 1, the loading wheel set 2 and the running wheel set 9, and a structural light sensor 8 is arranged outside the distance measuring sensors 7. In the moving process of the platform, the vertical pressing device 4 enables the loading wheel set 2 to apply vertical downward pressure to the steel rail, the distance measuring sensor 7 obtains the relative vertical compression difference between the running wheel set and the loading wheel set 2 when the loading wheel set passes through the upper part of the rubber cushion, and the rigidity of the rubber cushion under the rail is calculated by combining the wheel force. Meanwhile, the structural light sensor 9 acquires the shape and the position characteristics of the upper surface of the fastener 13 and the ballasted track sleeper-railway ballast, and realizes the layered identification of the failure of the rubber cushion under the track, the dislocation of the fastener and the empty sleeper by combining the calculation of the rigidity of the rubber cushion 12 under the track.
As a preferred embodiment of the invention, the chassis of the power moving frame 1 is made of rigid materials, the power moving frame 1 is in coupling contact with steel rails through a running wheel set 9 and moves along the railway line direction, the moving frame 1 is driven by electric power in the railway track structure layered rigidity moving inspection process, and the deformation of the chassis of the power moving frame 1 during moving and loading is negligible.
As a preferred embodiment of the invention, the vertical pressing device 4 is used for connecting the rigid loading wheel pair and the power moving frame 1, and applying vertical downward pressure to the loading wheel pair and transmitting the vertical downward pressure to two steel rails. The lower end of the vertical pressing device 4 is embedded into integrated vertical limiting grooves symmetrically arranged on the wheel shaft, the circumferential translational degree of freedom is limited, the loading wheel and the wheel shaft realize relative rotation, the upper end of the vertical pressing device 4 is limited by the counterforce frame 5, the rigid counterforce frame 5 provides vertical displacement constraint for the upper end of the vertical pressing device 4, and the protruding circular ring structure at the upper end of the vertical pressing device 4 prevents the upper end of the vertical pressing device from slipping from the counterforce frame 5.
As a preferred embodiment of the invention, the rail holding wheel set 6 provides a counter force for the vertical downward pressure exerted on the rails during the moving loading process. The rail holding wheel is connected with the chassis of the power moving frame 1 through a rigid rod, and the rigid rod has a rotation freedom degree along the rod axis direction. The rim of the rail holding wheel pair is in rolling contact with the lower edge surfaces of rail heads on two sides of a steel rail.
As a preferred embodiment of the present invention, the distance measuring sensor 7 is installed on the lower surfaces of two sides of the chassis of the moving frame 1, the laser points are beaten down on the track component and the rail bearing table or the sleeper shoulder, the laser points are arranged linearly, and the formed laser line and the pair of rail holding wheels and the pair of running wheels are respectively located on the same cross section. And respectively acquiring the vertical displacement variation of the steel rail relative to the rail bearing table or the sleeper shoulder when the travelling wheel and the loading wheel pass through the steel rail above the rubber pad under the same rail in the moving and loading process. In the moving process, the laser can count the rail bearing table or sleeper shoulder through the remarkable vertical displacement difference before and after the rail bearing table or sleeper 15 shoulder, namely the mileage coarse positioning.
As a preferred embodiment of the present invention, the wheel force sensor 3 is installed at the center of the running wheel and the loading wheel, obtains the real-time vertical wheel rail force of the running wheel and the loading wheel during the moving and loading process, and combines the rail bearing table or sleeper shoulder counting function of the ranging sensor 7 to obtain the relative difference value of the absolute value and the force of the vertical wheel rail force when the running wheel and the loading wheel pass through the steel rail above the rubber pad under the same rail.
As a preferred embodiment of the present invention, the structural light sensors 8 are installed at both sides of the lower surface of the chassis of the moving frame 1, and are in the same cross section with the loading wheel set and the running wheel set. In the moving process, the structured light scans to obtain the three-dimensional space form of the lower side of the steel rail, the fastener, the upper surface of the rail bearing table or the sleeper shoulder, and the upper surface of the railway ballast near the sleeper shoulder.
As a preferred embodiment of the present invention, the data processing system 14 may be operated by an on-board microcomputer or a remote off-line data analysis platform, which on-board microcomputer may be fixed to the manned area desktop of the power mobile frame 1. The mobile loading process realizes the transmission and storage of data of the wheel force sensor, the ranging sensor and the structure light sensor in a wireless or wired mode. And when the abnormal result appears, the corresponding structure light scanning result is called to judge fastener missing, ectopic and loosening, and in addition, the sleeper shoulder and the height difference variable quantity of the upper surface of the ballast layer nearby can be used for carrying out sleeper space-crane layering identification according to the shape wheel and the loading wheel when passing above the sleeper.
Examples
The railway track structure layered rigidity mobile inspection device comprises a power mobile frame 1, a loading wheel set 2, a wheel force sensor 3, a vertical pressing device 4, a counter-force frame 5, a rail holding wheel set 6, a distance measuring sensor 7, a structure light sensor 8, a running wheel set 9, a shaft counter 10 and a data processing system 14.
The power moving frame 1 is coupled with the surface of the steel rail 12 through the traveling wheel set 9 and travels. A loading wheel set 2 is arranged below the middle part of the power moving frame 1, and a reaction frame 5 is welded above the platform. A vertical pressing device 4 is arranged between the counterforce frame 5 and the wheel shaft of the loading wheel set, a wheel force sensor 3 is arranged at the wheel shaft of the running wheel set 9 and the wheel shaft of the loading wheel set 2, the lower surface of the power moving frame 1 is in rolling contact with the lower edge surface of the rail head through a rail holding wheel set 6 connected with a rigid rod, distance measuring sensors 7 are arranged at the same vertical section positions of the lower surfaces of the two sides of the power moving frame 1, the loading wheel set 2 and the running wheel set 9, and a structural light sensor 8 is arranged on the lower surface of the chassis of the power moving frame 1 with a loading section. In the moving process of the platform, the vertical pressing device 4 enables the loading wheel set 2 to apply vertical downward pressure to the steel rail, the distance measuring sensor obtains 7 relative vertical compression difference when the running wheel set 9 and the loading wheel set 2 pass through the upper portion of the rubber cushion, and the rigidity of the rubber cushion under the rail is calculated by combining the wheel force. Meanwhile, the structural light sensor 9 acquires the spatial form and the position characteristic of the fastener, and realizes layered identification of abnormal structural rigidity of the rail such as failure of the rubber cushion under the rail, abnormal position of the fastener, empty hanging of the sleeper and the like by combining the rigidity calculation result of the rubber cushion.
Specifically, as shown in fig. 1, the chassis, the running wheel set 9 and the loading wheel set2 of the power moving frame 1 are all made of rigid materials, the wheelbase of the rigid wheel set is adjustable, and the wheelbase has a shaking degree of freedom so as to be matched with the track gauge and the railway line type on site better, and the length, the width and the thickness of the chassis are 3m multiplied by 1.8m multiplied by 0.05m. A set of loading wheel sets 2 is arranged at the middle section of the moving frame 1. The power moving frame 1 is driven by electricity to realize moving loading travelling on steel rails. The detachable support on the power moving frame 1 is used for fixing a microcomputer, and real-time transmission and processing of detection data are performed in a wireless mode.
Referring to fig. 2, the vertical pressing device 4 is 3 hydraulic jacks, symmetrically distributed along the center line of the cross section of the movable frame 1, and is connected with the loading wheel set 2 and the movable frame 1. The upper end of the hydraulic jack is restrained from vertical displacement by a counterforce frame 5. Under the condition of moving the frame, 3 hydraulic jacks can provide a downward pressing force range which is 1-15 t for the loading wheel set, and the downward pressing force range is transmitted to the rubber pad under the rail, the fastener and the lower rail structure through the steel rail. Wheel force sensors are installed at the centers of the running and loading wheels to acquire real-time vertical wheel rail forces of the two wheels in real time.
Referring to fig. 3, the rail holding wheel set 6 is rigidly connected to the moving frame 1 through a rigid rod, and provides a reaction force for the downward pressure of the loading wheel set 2. The left side and the right side of the chassis of the movable frame 1 are respectively provided with 2 groups of rail holding wheel pairs 6, each group of wheel pairs is respectively provided with 1 rigid rail holding wheel on the left side and the right side of the same steel rail, and the longitudinal distance between each group of rail holding wheel pairs 6 and the loading wheel pair 2 is about 0.5m. The wheel rim of the rail holding wheel is in rolling contact with the lower edge surface of the rail head of the steel rail.
Referring to fig. 1 and 4,4 line laser ranging sensors 7 are respectively arranged at the left side and the right side of the lower surface of a chassis of a movable frame 1 and the same section positions of a loading wheel pair 2 and a front travelling wheel pair 9, measuring points are beaten on the upper surface of a track plate in a linear manner, when the movable frame moves above a rail bearing table or a sleeper shoulder, laser simultaneously acquires vertical distance values of the sensors from the upper surface of a rail bottom of a rail, a fastener and the upper surface of the rail bearing table or the sleeper shoulder, so that the loading wheel and the travelling wheel cause relative vertical compression quantity of a rubber pad under the rail and the rail bearing table or the sleeper shoulder when passing the rail bearing table or the sleeper shoulder. The simple calculation of the rigidity of the rubber cushion under the rail can be realized by respectively combining the real-time vertical wheel rail force of the shape-moving wheel and the loading wheel at the same moment.
Referring to fig. 1, 5 and 6, 8 structural light sensors 8 are mounted on the inner side and the outer side of the steel rail on the lower surface of the chassis of the loading section of the movable frame 1, and space point cloud information of the fastener, the bearing table or the sleeper shoulder and the upper surface of the railway ballast near the sleeper shoulder can be obtained when the bearing table or the sleeper shoulder passes through the bearing table or the sleeper shoulder, and when the rigidity calculation of the rubber mat under the rail is abnormal, three-dimensional point cloud information of the fastener is called, so that the judgment of loosening, dislocation and missing of the fastener is further realized. And identifying the sleeper empty crane according to the relative height variation calculated by the three-dimensional point cloud of the upper surface of the railway ballast layer near the sleeper shoulder when the loading wheel and the shape-moving wheel pass over the same sleeper successively.
The mobile inspection device for detecting abnormal railway track structural rigidity in a layered manner fills the blank of the technology and equipment for daily and rapid inspection and rigidity layered identification of the railway track structural rigidity, realizes high-efficiency and flexible mobile detection in a short skylight period, improves the intelligent degree of the engineering inspection, and has a certain research and engineering value for timely grasping the layered rigidity state of the railway track structure in a railway operation and maintenance department and improving the maintenance efficiency.
The foregoing description is only exemplary embodiments of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention, or direct or indirect application in other related system fields are included in the scope of the present invention.
Claims (10)
1. The utility model provides a device is patrolled and examined in removal that unusual layering of railway track structure rigidity detected which characterized in that:
the device comprises a power moving frame (1), a wheel force sensor (3), a distance measuring sensor (7), a structure light sensor (8), a shaft counter (10) and a data processing system (14);
a loading wheel pair (2) and two groups of running wheel pairs (9) are arranged below the power moving frame (1), and the loading wheel pair (2) is positioned between the two groups of running wheel pairs (9);
a counterforce frame (5) is fixedly arranged above the power moving frame (1), and a vertical pressing device (4) is arranged between the counterforce frame (5) and the wheel shaft of the loading wheel set (2); a rail holding wheel pair (6) is arranged below the power moving frame (1), the rail holding wheel pair (6) is connected with the chassis of the moving frame (1) through a rigid rod piece, and the rail holding wheel pair (6) provides counter force for vertical downward pressure applied by the vertical pressing device (4);
the wheel force sensor (3) is used for acquiring the real-time vertical wheel rail force of any wheel in the loading wheel set (2) and the running wheel set (9) in real time;
The ranging sensor (7) is used for respectively acquiring the vertical displacement of the upper surface of the rail bottom of the steel rail (11) relative to the upper surface of the rail bearing table or sleeper when the running wheel set (9) and the loading wheel set (2) pass through the steel rail above the rail lower rubber pad (12);
The structural light sensor (8) is used for acquiring the space shape and position characteristics of the fastener (13) of the ballastless track line section and the upper surface of the shoulder of the bearing rail platform, and the space shape and position characteristics of the fastener of the ballastless track line section, the sleeper shoulder and the upper surface of the ballasts nearby the sleeper shoulder are provided;
The axle counter (10) acquires moving mileage data;
The data processing system (14) receives data acquired by the axle counter (10), the ranging sensor (7) and the wheel force sensor (3), calculates the rigidity of the rubber pad under the rail, and performs layering identification of failure of the rubber pad under the rail, abnormal fastener placement and abnormal sleeper empty hanging rigidity.
2. The mobile inspection device for detecting abnormal structural rigidity layering of a railway track according to claim 1, wherein the mobile inspection device comprises:
The vertical pressing device (4) is used for connecting the rigid loading wheel set (2) and the power moving frame (1), and applying vertical downward pressure to the loading wheel set and transmitting the vertical downward pressure to two steel rails; the lower end of the vertical pressing device (4) is embedded into integrated vertical limiting grooves symmetrically arranged on the wheel shaft, the circumferential translational degree of freedom is limited, the loading wheel and the wheel shaft realize relative rotation, the upper end of the vertical pressing device (4) is limited by the counter-force frame (5), the rigid counter-force frame (5) provides vertical displacement constraint for the upper end of the vertical pressing device (4), and the protruding circular ring structure at the upper end of the vertical pressing device (4) prevents the upper end of the vertical pressing device from slipping from the counter-force frame (5).
3. The mobile inspection device for detecting abnormal structural rigidity layering of railway tracks according to claim 2, wherein the mobile inspection device is characterized in that:
The rail holding wheel pair (6) provides counter force for vertical downward pressure applied to the steel rail in the moving and loading process; the rail holding wheel is connected with the chassis of the power moving frame (1) through a rigid rod, the rigid rod has a rotation freedom degree along the rod axis direction, and the rim of the rail holding wheel pair is in rolling contact with the lower edge surface of the rail head.
4. A mobile inspection device for detecting abnormal structural rigidity layering of railway track according to claim 3, wherein:
the rail holding wheel sets (6) are symmetrically distributed along the left side and the right side of the chassis, and the rail holding wheel sets (6) are longitudinally and longitudinally symmetrically arranged on the loading wheel sets (2).
5. The mobile inspection device for detecting abnormal structural rigidity layering of a railway track according to claim 4, wherein the mobile inspection device comprises:
the wheel force sensor (3) is respectively arranged at the wheel axle center positions of the running wheel pair (9) and the loading wheel pair (2).
6. The mobile inspection device for detecting abnormal structural rigidity layering of a railway track according to claim 5, wherein the mobile inspection device comprises:
the number of the distance measuring sensors (7) is two, the distance measuring sensors are arranged on the lower surfaces of two sides of the chassis of the movable frame (1), and the two distance measuring sensors (7) are respectively positioned on the same cross section with the loading wheel set (2) and the running wheel set (9).
7. The mobile inspection device for detecting abnormal structural rigidity layering of a railway track according to claim 1, wherein the mobile inspection device comprises:
The axle counter (10) is arranged on the wheel axle of the running wheel set (9).
8. The mobile inspection device for detecting abnormal structural rigidity layering of a railway track according to claim 5, wherein the mobile inspection device comprises:
The structural light sensors (8) are symmetrically arranged on the left side and the right side of the lower surface of the chassis of the movable frame (1) and are positioned on the same cross section with the loading wheel pair (2).
9. The mobile inspection device for detecting abnormal structural rigidity layering of a railway track according to claim 6, wherein the mobile inspection device comprises:
the data processing system (14) is an onboard microcomputer which can be fixed on the power moving frame (1).
10. The mobile inspection device for detecting abnormal structural rigidity layering of railway tracks according to claim 7, wherein the mobile inspection device comprises:
The data processing system (14) realizes the transmission and storage of data of the axle counter (10), the ranging sensor (7) and the wheel force sensor (3) in a wireless or wired mode.
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| CN101660958A (en) * | 2009-09-22 | 2010-03-03 | 华东交通大学 | Longitudinal force measuring method of seamless track steel rail |
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| CN102108656B (en) * | 2010-12-18 | 2012-05-09 | 浙江大学 | System for kinetic model test of ballastless track subgrade of high-speed railway |
| KR101275916B1 (en) * | 2011-08-10 | 2013-06-17 | 한밭대학교 산학협력단 | Inspection apparatus for railroad |
| FR3078160B1 (en) * | 2018-02-22 | 2020-09-18 | Alstom Transp Tech | RAIL VEHICLE SUB-CHASSIS INSPECTION DEVICE AND CORRESPONDING INSPECTION PROCEDURE |
| KR102277633B1 (en) * | 2020-11-03 | 2021-07-15 | 주식회사 혜성안전기술원 | Automatic robot measuring system for transit tunnel safety inspection |
| CN114323511B (en) * | 2021-12-09 | 2023-08-25 | 川南城际铁路有限责任公司 | Accurate testing device and method for railway track supporting rigidity |
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| CN101660958A (en) * | 2009-09-22 | 2010-03-03 | 华东交通大学 | Longitudinal force measuring method of seamless track steel rail |
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| 基于脉冲激励下钢轨振动响应的扣件失效识别方法;侯博文 等;《工程力学》;20210228;第38卷(第2期);全文 * |
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