CN113109133B - Rail surface hardness measuring device - Google Patents
Rail surface hardness measuring device Download PDFInfo
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- CN113109133B CN113109133B CN202110383322.9A CN202110383322A CN113109133B CN 113109133 B CN113109133 B CN 113109133B CN 202110383322 A CN202110383322 A CN 202110383322A CN 113109133 B CN113109133 B CN 113109133B
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- 238000007542 hardness measurement Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N3/02—Details
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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
- 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
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/48—Investigating hardness or rebound hardness by performing impressions under impulsive load by indentors, e.g. falling ball
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application discloses a rail surface hardness measuring device, which comprises: the sliding assembly and the measuring assembly can move forwards on the track along the track, the measuring assembly comprises a supporting piece, an impact body and a first sensor arranged on the impact body, the supporting piece is connected with the sliding assembly, the supporting piece is provided with a guide inclined plane which is obliquely arranged relative to the rail surface, the distance between the guide inclined plane and the rail surface is gradually increased in the advancing direction of the sliding assembly, when the impact body is placed on the guide inclined plane, the impact body can slide from the supporting piece along the guide inclined plane to impact the rail surface, and the first sensor is used for measuring the impact speed and the rebound speed when the impact body impacts the rail surface. The speed of the impact body sliding along the guide inclined plane can be decomposed into sub-speeds parallel to the rail surface, and the sub-speeds can offset the moving speed of the sliding component in the forward direction, so that the impact body can vertically impact the rail surface to acquire the impact speed and rebound speed of the impact body. The device has simple structure, simple operation and high measurement efficiency.
Description
Technical Field
The application relates to the technical field of rail transit detection, in particular to a rail surface hardness measuring device.
Background
Along with the rapid development of social economy in China, railway industry is greatly developed, and particularly the science and technology level in China is continuously improved, wherein the construction of high-speed railways reaches the world first-class level. To ensure the safety of railway operation, the quality of railway early-stage infrastructure construction is ensured, and the later-stage inspection and maintenance work of railway equipment is performed. At present, along with the increase of the railway operation axle weight and the operation quantity, the problems of steel rail diseases, such as steel rail chipping, wave-shaped abrasion, abrasion and the like, are gradually serious, the hardness of the steel rail is changed due to the occurrence of the diseases, and the hardness of the steel rail needs to be measured in time in order to ensure the track quality and the driving safety. At present, the rail surface hardness is mainly measured in a manual mode, however, the manual detection range is small, and the conditions of complicated operation process and low efficiency exist at the same time.
Disclosure of Invention
In view of the above, it is desirable to provide a rail surface hardness measuring device that has a simple structure and is easy to operate, and that can effectively improve the work efficiency of an operator.
A rail face hardness measuring device comprising: the sliding assembly and the measuring assembly can move forwards on the track along the track, the measuring assembly comprises a supporting piece, an impact body and a first sensor arranged on the impact body, the supporting piece is connected with the sliding assembly, the supporting piece is provided with a guide inclined plane which is obliquely arranged relative to the track surface, in the forward direction of the sliding assembly, the distance between the guide inclined plane and the track surface is gradually increased, when the impact body is placed on the guide inclined plane, the impact body can slide from the supporting piece along the guide inclined plane to impact the track surface, and the first sensor is used for measuring the impact speed and the rebound speed when the impact body impacts the track surface.
In the rail surface hardness measuring device, the measuring assembly is arranged on the sliding assembly and comprises a supporting piece, an impact body and a first sensor. The support piece is provided with the guide inclined plane which is obliquely arranged relative to the rail surface, and the distance between the guide inclined plane and the rail surface is gradually increased in the advancing direction of the sliding assembly. Thus, when the sliding assembly moves forward on the track, the speed of the impact body sliding along the guide inclined plane can be divided into a sub-speed parallel to the rail surface, and the sub-speed can offset the moving speed of the sliding assembly in the forward direction, so that the impact body can vertically impact the rail surface. The first sensor arranged on the impact body can measure the impact speed V of the impact body at a position 1mm away from the rail surface when the impact body impacts the rail surface A And rebound velocity V B Further, the calculation formula hl=1000× (V B /V A ) The rail face hardness value is obtained, wherein HL represents the rillic hardness value. Measurement of the rail surface hardnessThe measuring device is simple in structure and simple in operation process, and can effectively improve measurement efficiency.
The technical scheme is further described as follows:
in one embodiment, when the impact body is placed on the guiding inclined plane, a surface of the impact body, which is in contact with the guiding inclined plane, is a sliding surface, after the impact body slides from the guiding inclined plane, a surface of the impact body, which is impacted by the rail surface, is an impact surface, the sliding surface is not perpendicular to the impact surface, and an angle between the sliding surface and the impact surface is an obtuse angle.
In one embodiment, the impact body is a rhombohedral structure, and the sliding surface and the impact surface are two adjacent surfaces in the rhombohedral structure.
In one embodiment, the sliding assembly is provided with a driving unit and a second sensor which are electrically connected with each other, the second sensor is used for measuring the moving speed of the sliding assembly, the supporting piece is hinged on the sliding assembly, and the driving unit is connected with the supporting piece and used for driving the supporting piece to rotate relative to the sliding assembly so as to adjust the inclination angle of the guide inclined plane relative to the rail surface.
In one embodiment, the sliding assembly is further provided with a controller, the controller is respectively and electrically connected with the driving unit and the second sensor, and the controller is used for controlling the driving unit to adjust the inclination angle of the guide inclined plane relative to the rail surface according to the movement speed of the sliding assembly detected by the second sensor.
In one embodiment, the sliding assembly is further provided with an automatic recoverer and a connecting rope, the automatic recoverer is electrically connected with the controller, one end of the connecting rope is connected with the automatic recoverer, the other end of the connecting rope is connected with the impact body, and after the impact body impacts the rail surface, the automatic recoverer automatically recovers the connecting rope so that the impact body returns to the guide inclined surface.
In one embodiment, the automatic recoverer comprises a second motor and a second rotating shaft, the second rotating shaft is connected with the output end of the second motor, one end of the connecting rope is connected with the second rotating shaft and can be wound on the second rotating shaft, and the second motor drives the second rotating shaft to recover or lower the connecting rope.
In one embodiment, the display comprises a sliding assembly, a display body, a first inductor, a second inductor, a support rod, a fastening bolt, a controller, a first sensor, a second sensor, a display and a display, wherein the support rod is supported between the sliding assembly and the display body, the display body is electrically connected with the controller, the first sensor and the second sensor, the support rod comprises a fixed section and a telescopic section, at least one end opening accommodating cavity is formed in the fixed section, the telescopic section is inserted into the accommodating cavity, the fastening bolt penetrates through the fixed section, the end of the fastening bolt is in extrusion fit with the telescopic section, the telescopic section is connected with the display body, and the fixed section is connected with the sliding assembly.
In one embodiment, the sliding assembly comprises a first beam, a second beam and a connecting rod, the first beam and the second beam are arranged at intervals, the first beam spans between two rails, one end of the second beam is erected on the rails, one end of the connecting rod is connected with the first beam, the other end of the connecting rod is connected with one end of the second beam away from the rails, walking wheels are arranged at two ends of the first beam, walking wheels are arranged at one end of the second beam erected on the rails, the walking wheels are slidably arranged on the rail surface, the supporting piece is arranged at one end of the second beam erected on the rails, and the supporting piece is arranged on one side of the second beam towards the first beam.
In one embodiment, both ends of the first beam are provided with side wheels, and/or one end of the second beam, which is close to the track, is provided with the side wheels, the tread of the side wheels are in butt joint with the inner side wall of the track head, the central axis of the side wheels is perpendicular to the central axis of the travelling wheel, and the sliding direction of the side wheels is consistent with the sliding direction of the travelling wheel.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Moreover, the figures are not drawn to a 1:1 scale, and the relative sizes of various elements are merely exemplary in the figures, and are not necessarily drawn to true scale. In the drawings:
FIG. 1 is a schematic view showing a structure of an impact body in a rail surface hardness measuring device according to an embodiment of the present application when the impact body is placed on a support member;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1 at circle A;
FIG. 3 is a schematic view of the structure of an impact body in a rail surface hardness measuring device according to an embodiment of the present application when the impact body hits the rail surface;
FIG. 4 is an enlarged schematic view of the structure at circle B in FIG. 3;
FIG. 5 is a schematic view showing the structure of an impact body in a rail surface hardness measuring device according to an embodiment of the present application;
FIG. 6 is a top view of a rail surface hardness measuring device according to an embodiment of the present application.
The elements in the figures are labeled as follows:
10. a rail surface hardness measuring device; 11. a glide assembly; 111. a first cross beam; 112. a second cross beam; 113. a connecting rod; 114. a walking wheel; 115. a side wheel; 12. a measurement assembly; 121. a support; 1211. a guide slope; 122. an impact body; 1221. a sliding surface; 1222. an impact surface; 1223. a connection surface; 123. a connecting rope; 13. a display; 14. a support rod; 141. a fixed section; 142. a telescoping section; 15. a fastening bolt; 16. a push rod; 20. a track; 21. rail surface.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
Referring to fig. 1-4, in one embodiment, a rail surface hardness measurement device 10 is provided, comprising: a skid assembly 11 and a measurement assembly 12. The skid assembly 11 is capable of advancing along the track 20 on the track 20. The measuring assembly 12 comprises a support 121, an impact body 122 and a first sensor (not shown) provided on the impact body 122. The support 121 is connected to the runner assembly 11, and the support 121 is provided with a guide slope 1211 provided obliquely with respect to the rail surface 21 of the rail 20. As shown in fig. 2, the distance between the guide inclined surface 1211 and the rail surface 21 gradually increases in the forward direction of the slide assembly 11. When the impact body 122 is placed on the guide slope 1211, the impact body 122 can slide off the support 121 along the guide slope 1211 to strike the rail surface 21. The first sensor is used to measure the impact and rebound velocity of the impact body 122 as it strikes the rail surface 21.
In the above rail surface hardness measuring device 10, since the measuring assembly 12 is provided on the runner assembly 11, the measuring assembly 12 includes the support 121, the impact body 122, and the first sensor (not shown in the drawings). Wherein the support 121 is provided with a guide slope 1211 provided obliquely to the rail surface 21, and a distance between the guide slope 1211 and the rail surface 21 gradually increases in the forward direction of the slide assembly 11. Thus, as the runner assembly 11 travels on the rail 20, the velocity of the impact body 122 as it slides down the guide ramp 1211 breaks down the component velocity parallel to the rail surface 21 and this component velocity counteracts the velocity of the runner assembly 11 in the forward direction, allowing the impact body 122 to strike the rail surface 21 vertically. When the impact body 122 impacts the rail surface 21, the impact body is arranged on the impactThe first sensor on the impact body 122 is capable of measuring the impact velocity V of the impact body 122 at 1mm from the rail surface A And rebound velocity V B Further, the calculation formula hl=1000× (V B /V A ) The rail face hardness value is obtained, wherein HL represents the rillic hardness value. The rail surface hardness measuring device 10 is simple in structure and simple in operation process, and can effectively improve the measuring efficiency.
Referring to fig. 2, 4 and 5, when the impact body 122 is disposed on the guiding inclined surface 1211, the surface of the impact body 122 contacting the guiding inclined surface 1211 is a sliding surface 1221. After the impact body 122 slides down the guide slope 1211, the surface of the impact body 122 that impacts the rail surface is the impact surface 1222. The sliding surface 1221 is non-perpendicular to the impact surface 1222, and the angle between the sliding surface 1221 and the impact surface 1222 is an obtuse angle. In this way, when the impact body 122 slides off the guide inclined surface 1211 and hits the rail surface 21, the impact body 122 can hit the rail surface 21 vertically, and the impact surface 1222 can completely abut against the rail surface 21 to hit.
Referring specifically to fig. 5, further to the above embodiment, in an embodiment, the impact body 122 has a rhombohedral structure, and the sliding surface 1221 and the impact surface 1222 have two adjacent surfaces in the rhombohedral structure.
Alternatively, the shape of the impact body 122 is not particularly limited, as long as the angle between the sliding surface 1221 and the impact surface 1222 and the sliding surface 1221 and the impact surface 1222 is ensured to be an obtuse angle. For example, the impact body may be an irregular polyhedral structure, wherein the sliding surface 1221 and the impact surface 1222 are two surfaces of the irregular polyhedral structure, respectively.
On the basis of the above embodiment, in one embodiment, the sliding assembly 11 is provided with a driving unit (not shown) and a second sensor (not shown) which are electrically connected to each other. The second sensor is used to measure the moving speed of the skid assembly 11, and the support 121 is hinged to the skid assembly 11. The driving unit is connected to the support 121 for driving the support 121 to rotate relative to the runner assembly 11 to adjust the angle of inclination of the guide inclined surface 1211 relative to the rail surface 21. Therefore, the second sensor can be used to know the moving speed of the sliding assembly 11, and the driving unit can be used to adjust the inclination angle of the supporting member 121 and/or the guiding inclined surface 1211 relative to the rail surface 21 on the premise of keeping the moving speed at a constant speed, so that when the sliding assembly 11 moves forward on the track 20, the speed of the impact body 122 can be decomposed into a component speed parallel to the rail surface 21 when the impact body 122 slides down along the guiding inclined surface 1211, and the component speed can offset the moving speed of the sliding assembly 11 in the forward direction, thereby achieving the purpose that the impact body 122 vertically impacts the rail surface, and the measuring result is more accurate and reliable.
Specifically, the driving unit may be a first motor and a first rotating shaft, the first rotating shaft is connected to an output end of the first motor, and the supporting member 121 is fixedly connected to the first rotating shaft. When the first motor is started, the first motor drives the first rotating shaft to rotate around the central axis, so that the first rotating shaft drives the supporting piece 121 to rotate around the first rotating shaft, and the inclined angle of the supporting piece 121 relative to the rail surface 21 is adjusted.
Further, in one embodiment, the skid assembly 11 is also provided with a controller (not shown). The controller is electrically connected to the driving unit and the second sensor, and the controller is used for controlling the driving unit to adjust the inclination angle of the guiding inclined surface 1211 relative to the rail surface 21 according to the movement speed of the sliding assembly 11 detected by the second sensor. In this way, the velocity of the impact body 122 during the falling process can be resolved into a component velocity parallel to the rail surface 21, and the component velocity can offset the moving velocity of the runner 11 in the forward direction, so that the impact body 122 impacts the rail surface vertically.
Further, referring to fig. 5, the sliding assembly 11 is provided with a connecting rope 123, one end of the connecting rope 123 is connected to the sliding assembly 11, and the other end of the connecting rope 123 is connected to the impact body 122. The surface of the connecting rope 123 connected to the impact body 122 is a connecting surface 1223. The connection surface 1223 is disposed opposite the impact surface 1222, the connection surface 1223 being adjacent to and non-perpendicular to the sliding surface 1221, and the angle between the connection surface 1223 and the sliding surface 1221 being acute. In this way, the impact body 122 is connected with the sliding assembly 11 through the connecting rope 123, so that the phenomenon of loss or loss after the impact body 122 impacts the rail surface 21 to rebound is avoided, and the service life of the whole rail surface hardness measuring device 10 is prolonged.
Referring to fig. 1 to 4, in addition to the above embodiment, in one embodiment, the sliding assembly 11 is further provided with an automatic recoverer (not shown). The automatic recoverer is electrically connected with the controller, one end of the connecting rope 123 is connected with the automatic recoverer, and the other end of the connecting rope 123 is connected with the impact body 122.
Further, since one end of the connecting string 123 is connected to the automatic retriever and the other end is connected to the connecting surface 1223, when the impact body 122 hits the rail surface 21, the impact body 122 can be returned to the initial position on the guide inclined surface 1211 again for the next hitting operation under the mutual cooperation of the automatic retriever and the connecting string 123 after the impact speed and the rebound speed are acquired by the first sensor. It can be seen that the automatic retriever enables the impact body 122 to automatically and continuously strike the rail surface to continuously measure the hardness value of each point on the rail surface, enabling the apparatus to perform long-distance rail surface hardness measurement.
Based on the above embodiments, in one embodiment, the automatic recoverer includes a second motor (not shown) and a second rotating shaft (not shown). The second rotation shaft is connected with the output end of the second motor, one end of the connection rope 123 is connected with the second rotation shaft and can be wound on the second rotation shaft, and the second motor drives the second rotation shaft to recover or lower the connection rope.
Specifically, when the impact body 122 starts to slide downward from the guide slope 1211, the second motor is started and drives the second rotation shaft to rotate to release the connection rope 123 wound around the second rotation shaft, and at this time, the length of the second rotation shaft releasing connection rope 123 is longer than the sliding distance of the impact body 122 on the guide slope 1211 at the same time; meanwhile, when the impact body 122 is separated from the guide slope 1211, the length of the second rotation shaft release connection string 123 is greater than the falling height of the impact body 122 at the same time. In this way, the impact body 122 can effectively avoid the influence of the connecting rope 123 on the speed of the impact body 122 during sliding and falling in the sliding and falling process, and avoid the influence on the measurement precision. When the impact body 122 hits the rail surface 21 and the impact velocity V1 mm from the rail surface is measured A And rebound velocity V B In the time-course of which the first and second contact surfaces,the second motor drives the second rotation shaft to rotate, and at this time, the rotation direction of the second rotation shaft is opposite to the rotation direction when the connecting rope 123 is lowered, so that the connecting rope 123 can be rewound on the second rotation shaft to achieve the purpose of recovering the connecting rope 123, and the impact body 122 can be rewound on the guide inclined surface 1211 to prepare for the next impact operation.
Optionally, the automatic retriever comprises a first electromagnet and a second electromagnet. Wherein, the first electromagnet is arranged on the supporting piece 121, the second electromagnet is arranged on the impact body 122, and the first electromagnet and the second electromagnet are electrically connected with the controller. In this way, the first electromagnet can absorb and release the impact body 122 provided with the second electromagnet by means of power on and power off. Specifically, when the skid assembly 11 is advanced, the first electromagnet and the second electromagnet are not energized, and the impact body 122 slides down the guide slope until striking the rail surface 21. When the impact body 122 hits the ground, the first sensor measures the impact velocity V of the impact body 122 at 1mm from the rail surface A And rebound velocity V B After that, the controller energizes the first electromagnet and the second electromagnet, so that the first electromagnet sucks the impact body 122 provided with the second electromagnet, and the impact body 122 is returned to the guide slope. When the next impact operation is needed, the first electromagnet and the second electromagnet are disconnected.
Referring to fig. 1 and 3, in one embodiment, the rail surface hardness measuring device 10 further includes a display 13. The display 13 is electrically connected to the controller, the first sensor and the second sensor. Thus, the display 13 can intuitively reflect the forward speed of the sliding assembly 11, so that an operator can conveniently control and maintain the forward speed of the sliding assembly 11; meanwhile, the display 13 may also display the inclination angle of the support 121, the impact speed and rebound speed of the impact body 122 at 1mm from the rail surface.
Further, in one embodiment, the rail surface hardness measuring device 10 further includes a support rod 14. The support bar 14 is supported between the skid assembly 11 and the display 13. The support pole 14 includes a fixed section 141 and a telescoping section 142. The fixing section 141 is provided with a receiving cavity with at least one opening, and the telescopic section 142 is inserted into the receiving cavity. The fastening bolt 15 is inserted through the fixing section 141, and an end of the fastening bolt 15 is in press fit with the telescopic section 142. The telescoping section 142 is connected to the display 13 and the stationary section 141 is connected to the skid assembly 11. The height of the supporting rod 14 is adjustable, so that the display 13 can be placed at a height position more convenient for an operator to watch, the applicability of the display 13 is improved, and the whole rail surface hardness measuring device 10 is more convenient to use.
Referring to fig. 1, 3 and 6, in one embodiment, the sliding assembly 11 includes a first beam 111, a second beam 112 and a connecting rod 113. The first beam 111 and the second beam 112 are arranged at intervals, the first beam 111 spans between the two tracks 20, one end of the second beam 112 is erected on the tracks 20, one end of the connecting rod 113 is connected with the first beam 111, and the other end of the connecting rod 113 is connected with one end, far away from the tracks 20, of the second beam 112. The two ends of the first beam 111 are provided with travelling wheels 114, one end of the second beam 112, which is erected on the track, is provided with the travelling wheels 114, and the travelling wheels 114 are slidably arranged on the rail surface 21. In this way, by providing the first beam 111, the second beam 112 and the connecting rod 113, the stability of the sliding assembly 11 when traveling on the track can be enhanced, and the sliding assembly 11 can be effectively prevented from tilting back and forth when the impact body 122 hits the rail surface 21.
Specifically, the second beam 112 and the connecting rod 113 are integrally formed on the first beam 111. In this way, the connection strength of the runner assembly 11 is increased, the service life of the rail surface hardness measuring device 10 is improved, and at the same time, the assembly time is saved.
Alternatively, the second beam 112 is detachably connected to the connecting rod 113, and the connecting rod 113 is detachably disposed on the first beam 111. For example, the second beam 112 is connected to the connecting rod 113 by means of a snap-fit or screw-connection, and the connecting rod 113 is also mounted to the first beam 111 by means of a snap-fit or screw-connection. In this way, when the device is not in use or needs to be carried, the first beam 111, the second beam 112 and the connecting rod 113 can be disassembled, so as to reduce the volume of the sliding assembly 11, and the sliding assembly is convenient to carry or store.
Further, in order to allow the impact body 122 to strike the rail surface 21 during the forward travel of the skid assembly 11, the support member 121 is disposed at one end of the second beam 112 that is erected on the rail 20, and the support member 121 is disposed at a side of the second beam 112 that faces the first beam 111. Wherein the skid assembly 11 is advanced in the direction of the second beam 112 when the operator pushes the first beam 111.
Specifically, the first beam 111, the second beam 112, the connecting rod 113 and the supporting member 121 are all made of aluminum alloy materials, so that the whole rail surface hardness measuring device 10 is lighter in weight, convenient to process and manufacture, and convenient to carry, and the practicability of the rail surface hardness measuring device 10 is improved.
Alternatively, the materials of the first beam 111, the second beam 112, the connection rod 113, and the support 121 are not particularly limited. For example, the first beam 111, the second beam 112, the connecting rod 113 and the supporting member 121 may be made of plastic, thus further reducing the weight of the rail surface hardness measuring device 10 and facilitating portability. For another example, the first beam 111, the second beam 112, the connecting rod 113 and the supporting member 121 may be made of other metal materials, thus increasing the structural strength of the sliding assembly 11.
Referring to fig. 1 and 3, in one embodiment, both ends of the first beam 111 are provided with side wheels 115, and/or one end of the second beam 112, which is close to the rail 20, is provided with side wheels 115. The tread of the side wheel 115 is abutted against the inner side wall of the rail head of the rail 20, the central axis of the side wheel 115 is perpendicular to the central axis of the travelling wheel 114, and the sliding direction of the side wheel 115 is consistent with the sliding direction of the travelling wheel 114. In this way, the side wheels 115 can drive the travelling wheels 114 along the rail surface 21 of the rail 20, so as to avoid the travelling wheels 114 from shifting during the forward movement.
It should be noted that "the two ends of the first beam 111 are provided with the side wheels 115, and/or the one end of the second beam 112 near the track 20 is provided with the side wheels 115" includes three embodiments in which the two ends of the first beam 111 are provided with the side wheels 115, or the one end of the second beam 112 near the track 20 is provided with the side wheels 115, or the two ends of the first beam 111 are provided with the side wheels 115, and the one end of the second beam 112 near the track 20 is provided with the side wheels 115.
When the first beam 111 is provided with side wheels 115 at both ends and the second beam 112 is provided with side wheels 115 at an end near the track 20, stability during running of the skid assembly 11 can be further increased.
Specifically, in this embodiment, the road wheels 114 and/or the side wheels 115 are made of nylon material. In this manner, the road wheels 114 and/or the side wheels 115 may be provided with good insulation and wear resistance.
Referring to fig. 1 and 3, the rail surface hardness measuring device 10 further includes a push rod 16. The push rod 16 is mounted in the middle of the first cross member 111, and the push rod 16 extends in a direction away from the track. The push rod 16 is arranged to facilitate the operator to push the sliding assembly 11, so that the sliding assembly 11 can keep moving forward at a constant speed; in addition, the provision of the pushing point in the middle of the first cross member 111 also allows the operator to remain stationary during pushing of the skid assembly 11.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. A rail face hardness measuring device, comprising: the sliding assembly and the measuring assembly can move forwards along the track on the track, the measuring assembly comprises a supporting piece, an impact body and a first sensor arranged on the impact body, the supporting piece is connected with the sliding assembly, the supporting piece is provided with a guide inclined plane which is obliquely arranged relative to the track surface, in the forward direction of the sliding assembly, the distance between the guide inclined plane and the track surface is gradually increased, when the impact body is placed on the guide inclined plane, the impact body can slide off the supporting piece along the guide inclined plane to impact the track surface, and the first sensor is used for measuring the impact speed and the rebound speed when the impact body impacts the track surface; when the impact body is arranged on the guide inclined plane, the surface, which is contacted with the guide inclined plane, of the impact body is a sliding surface, after the impact body slides from the guide inclined plane, the surface, which is impacted by the rail surface, of the impact body is an impact surface, the sliding surface is not perpendicular to the impact surface, and an angle clamped between the sliding surface and the impact surface is an obtuse angle; the impact body is of an oblique parallelepiped structure, and the sliding surface and the impact surface are two adjacent surfaces in the oblique parallelepiped structure; the sliding assembly is provided with a driving unit and a second sensor which are electrically connected with each other, the second sensor is used for measuring the moving speed of the sliding assembly, the supporting piece is hinged on the sliding assembly, and the driving unit is connected with the supporting piece and used for driving the supporting piece to rotate relative to the sliding assembly so as to adjust the inclination angle of the guide inclined plane relative to the rail surface; the sliding assembly is further provided with a controller, the controller is respectively and electrically connected with the driving unit and the second sensor, and the controller is used for controlling the driving unit to adjust the inclination angle of the guide inclined plane relative to the rail surface according to the movement speed of the sliding assembly detected by the second sensor; the sliding assembly is further provided with an automatic recoverer and a connecting rope, the automatic recoverer is electrically connected with the controller, one end of the connecting rope is connected with the automatic recoverer, the other end of the connecting rope is connected with the impact body, and after the impact body impacts the rail surface, the automatic recoverer automatically recovers the connecting rope to enable the impact body to return to the guide inclined plane; the sliding assembly comprises a first beam, a second beam and a connecting rod, wherein the first beam and the second beam are arranged at intervals, the first beam spans between two rails, one end of the second beam is erected on the rails, one end of the connecting rod is connected with the first beam, the other end of the connecting rod is far away from one end of the rails, walking wheels are arranged at two ends of the first beam, one end of the second beam erected on the rails is also provided with walking wheels, the walking wheels are slidably arranged on the rail surface, the supporting piece is arranged at one end of the second beam erected on the rails, and the supporting piece is arranged on one side of the second beam facing the first beam.
2. The rail surface hardness measuring device according to claim 1, wherein the automatic retriever includes a second motor and a second rotating shaft, the second rotating shaft is connected to an output end of the second motor, one end of the connecting rope is connected to the second rotating shaft and can be wound around the second rotating shaft, and the second motor drives the second rotating shaft to retrieve or lower the connecting rope.
3. The rail surface hardness measuring device according to claim 1, further comprising a display and a support rod, wherein the support rod is supported between the sliding assembly and the display, the display is electrically connected with the controller, the first sensor and the second sensor, the support rod comprises a fixing section and a telescopic section, a containing cavity with at least one opening is formed in the fixing section, the telescopic section is inserted into the containing cavity, a fastening bolt penetrates through the fixing section, the end portion of the fastening bolt is in press fit with the telescopic section, the telescopic section is connected with the display, and the fixing section is connected with the sliding assembly.
4. The rail surface hardness measuring device according to claim 1, wherein side wheels are arranged at both ends of the first cross beam, the tread of each side wheel is abutted against the inner side wall of the rail head, the central axis of each side wheel is perpendicular to the central axis of the travelling wheel, and the sliding direction of each side wheel is consistent with the sliding direction of the travelling wheel.
5. The rail surface hardness measuring device according to claim 1, wherein a side wheel is arranged at one end of the second cross beam, which is close to the rail, a tread of the side wheel is abutted against an inner side wall of the rail head, a central axis of the side wheel is perpendicular to a central axis of the travelling wheel, and a sliding direction of the side wheel is consistent with a sliding direction of the travelling wheel.
6. The rail surface hardness measuring device according to claim 1, wherein side wheels are arranged at two ends of the first cross beam, side wheels are arranged at one end, close to the rail, of the second cross beam, the tread of each side wheel is abutted against the inner side wall of the rail head of the rail, the central axis of each side wheel is perpendicular to the central axis of each travelling wheel, and the sliding direction of each side wheel is consistent with the sliding direction of each travelling wheel.
7. The rail surface hardness measuring device according to claim 1, wherein the driving unit includes a first motor and a first rotating shaft, the first rotating shaft being connected to an output end of the first motor, the support being fixedly connected to the first rotating shaft.
8. The rail face hardness measurement device according to claim 1, wherein the automatic retriever comprises a first electromagnet and a second electromagnet, wherein the first electromagnet is disposed on the support, the second electromagnet is disposed on the impact body, and the first electromagnet and the second electromagnet are both electrically connected to a controller.
9. The rail face hardness measuring device according to claim 1, wherein the second cross member and the connecting rod are integrally formed on the first cross member.
10. The rail face hardness measuring device according to claim 1, wherein the second cross member is detachably connected to the connecting rod, and the connecting rod is detachably placed on the first cross member.
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| CN202110383322.9A CN113109133B (en) | 2021-04-09 | 2021-04-09 | Rail surface hardness measuring device |
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| CN202110383322.9A CN113109133B (en) | 2021-04-09 | 2021-04-09 | Rail surface hardness measuring device |
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| CN113109133B true CN113109133B (en) | 2023-11-10 |
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