CN111998818A - Rail vehicle wheel tread non-roundness measuring mechanism - Google Patents
Rail vehicle wheel tread non-roundness measuring mechanism Download PDFInfo
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- CN111998818A CN111998818A CN202011003201.9A CN202011003201A CN111998818A CN 111998818 A CN111998818 A CN 111998818A CN 202011003201 A CN202011003201 A CN 202011003201A CN 111998818 A CN111998818 A CN 111998818A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 57
- 238000006073 displacement reaction Methods 0.000 claims abstract description 72
- 230000000712 assembly Effects 0.000 claims abstract description 35
- 238000000429 assembly Methods 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 2
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- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 3
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- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
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- 241001669679 Eleotris Species 0.000 description 1
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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
- G01B21/20—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 contours or curvatures, e.g. determining profile
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
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Abstract
The invention relates to a measuring mechanism for measuring out-of-roundness of a wheel tread of a rail vehicle, belonging to a measuring mechanism and aiming at solving the problems that the prior roundness detection equipment usually uses a long rod to continuously measure one circle of a wheel rim, has slower dynamic response speed and lower structural precision and causes low precision of the measured result, the measuring mechanism comprises a fixed plate, at least one group of rail clamping assemblies used for installing the fixed plate and a plurality of displacement measuring assemblies, the rail clamping assemblies are arranged between two adjacent sleepers in a rail, the position of the rail clamping component is adjustably arranged at the bottom of one steel rail in the track, the fixing plate is arranged at the outer side of the steel rail, the fixed plate is detachably mounted at the top of the rail clamping assembly, and the plurality of displacement measuring assemblies are sequentially detachably mounted on the fixed plate along the length extending direction of the steel rail.
Description
Technical Field
The invention belongs to a measuring mechanism, and particularly relates to a measuring mechanism for out-of-roundness of a wheel tread of a railway vehicle.
Background
The wheels are important parts for ensuring the running of the vehicle and bear all static and dynamic loads of the rail vehicle. The wheels continuously rub with the rails during long-term running, abrasion of different degrees can be generated, and diameter parameters of the wheels are further changed. When the vehicle runs, if the coaxial diameter difference, the same frame diameter difference and the same vehicle diameter difference of the wheels exceed a certain range, the phenomena of wheel abrasion, wheel rim eccentric wear, abnormal vehicle body vibration and the like are easily caused, and even accidents such as axle breakage, side turning, derailment and the like of the rail vehicle are caused. Therefore, the out-of-roundness abnormal condition of the wheel can be effectively detected in time, and the method has important significance for guaranteeing the safe operation of the rail vehicle;
when the roundness of the wheel of the railway vehicle is detected, the roundness of the tread is indirectly measured by detecting the height of the wheel rim. The traditional roundness detection equipment usually uses a long rod to continuously measure one circle of the wheel rim, the dynamic response speed is slow, the structure precision is low, and therefore the measurement result precision is not high. In order to improve the measurement accuracy, a modular measuring mechanism for the out-of-roundness of the tread of the rail vehicle is developed.
Disclosure of Invention
The invention provides a measuring mechanism for the out-of-roundness of the wheel tread of a railway vehicle, aiming at solving the problems that the existing roundness detection equipment usually uses a long rod to continuously measure one circle of the wheel rim, the dynamic response speed is slow, the structure precision is low, and the measurement result precision is low;
a measuring mechanism for out-of-roundness of a wheel tread of a railway vehicle comprises two measuring units, wherein each measuring unit comprises an installation part and a plurality of displacement measuring assemblies, the installation part in each measuring unit is adjustably installed at the bottom of one steel rail in a railway, the plurality of displacement measuring assemblies in each measuring unit are arranged on the inner side of the corresponding steel rail, the plurality of displacement measuring assemblies are sequentially and detachably installed on the installation part along the length extending direction of the steel rail, the wheel tread of the railway vehicle is in contact with the displacement measuring assemblies during movement, and the out-of-roundness of the wheel tread of the railway vehicle is judged through the displacement variation of each displacement measuring assembly;
the mounting part comprises a fixing plate and at least one group of rail clamping assemblies for mounting the fixing plate, the rail clamping assemblies are arranged between two adjacent sleepers in the track, the position of each rail clamping assembly is adjustable and mounted at the bottom of one steel rail in the track, the fixing plate is arranged on the inner side of the steel rail and is detachably mounted at the top of each rail clamping assembly, and the displacement measuring assemblies are sequentially detachably mounted on the fixing plate along the length extending direction of the steel rail;
further, the number of the clamping rail assemblies is two;
the clamping rail assembly comprises an inner clamping rail and an outer clamping rail;
the inner clamping rail and the outer clamping rail are oppositely arranged on two sides of the steel rail, and are detachably connected through a bolt-nut mechanism which is arranged below the steel rail;
a first connecting through hole is processed at the lower part of the inner clamping rail, a second connecting through hole is processed at the lower part of the outer clamping rail, the first connecting through hole and the second connecting through hole are coaxially and oppositely arranged, the threaded end of a bolt in the bolt-nut mechanism sequentially penetrates through the first connecting through hole and the second connecting through hole and is arranged in a nut in the bolt-nut mechanism, and the nut is in threaded fastening connection with the bolt;
further, the displacement measuring assembly comprises a contact plate, a sliding sleeve, an elastic reset piece, a displacement sensor, a bottom fixing plate and a waterproof plug;
the bottom fixing plate is detachably mounted on the upper surface of the fixing plate, a sliding bearing is vertically and fixedly connected to the upper surface of the bottom fixing plate, an elastic resetting piece is arranged in the sliding bearing, one end of the elastic resetting piece is fixedly connected with the upper surface of the bottom fixing plate, the bottom of a sliding sleeve is sleeved at the top of the elastic resetting piece and slides up and down in the sliding bearing, a contact plate is arranged above the sliding bearing, the bottom of the contact plate is fixedly connected with the top of the sliding sleeve, a sensor fixing seat is arranged in the elastic resetting piece in the vertical direction, a displacement sensor is mounted in the sensor fixing seat, a signal input end of the displacement sensor penetrates through the sliding sleeve to be connected with the contact plate, a waterproof plug is arranged outside the circumference of the sliding bearing, and a signal output end of the;
further, the top surface of the contact plate is slightly lower than the top of the rail, and the distance from the top of the rail is not more than half of the minimum difference between the diameter of the wheel rim of the rail vehicle and the diameter of the tread;
further, the side gap of the contact plate of the adjacent displacement measurement assembly on the fixed plate does not exceed 1 mm;
furthermore, a strip-shaped groove is processed on the upper surface of the bottom fixing plate, the central line of the strip-shaped groove in the width direction is superposed with the central line of the fixing plate in the width direction, and the signal output end of the displacement sensor is connected with the waterproof plug through a wire arranged in the strip-shaped groove;
furthermore, the bottom of the outer circumferential side wall of the sliding bearing is provided with a limiting flange along the circumferential direction, the upper part of the outer circumferential side wall of the sliding bearing is sleeved with a bearing fixing seat, the bearing fixing seat is arranged at the upper end of the limiting flange, and two sides of the bearing fixing seat extend downwards and are fixedly connected with the upper surface of the bottom fixing plate;
furthermore, a through groove is processed on one side of the bearing fixing seat, the through groove and the strip-shaped groove form a waterproof plug fixing area, a waterproof plug fixing seat is arranged in the fixing area, the waterproof plug fixing seat is fixedly connected with the bearing fixing seat and the bottom fixing plate, a waterproof plug is fixedly connected to the waterproof plug fixing seat, and a signal output end of the displacement sensor is connected with the waterproof plug through a wire;
furthermore, be equipped with the spacing ring between sensor fixing base and the slip cap, the lower part of spacing ring rigid coupling circumference lateral wall in the slip cap, sensor fixing base is equipped with annular bulge on the outer disc of one end of keeping away from the bottom fixed plate, the spacing ring sets up the bellied lower part of annular in the sensor fixing base, the vertical end cartridge of sensor fixing base is in the spacing ring, and the outer circumference lateral wall of the vertical end of sensor fixing base and the interior circumference lateral wall sliding connection of spacing ring, the elasticity piece that resets sets up between spacing ring and bottom fixed plate, the one end of elasticity piece that resets and the bottom fixed connection of spacing ring, the other end of elasticity piece that resets and the upper surface fixed connection of bottom fixed plate.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a measuring mechanism for the out-of-roundness of a wheel tread of a rail vehicle, which can measure the out-of-roundness information of the wheel tread of the rail vehicle, and compared with the mode of continuously measuring one circle of a wheel rim by using a long rod in the existing measuring mechanism, the mechanism utilizes a plurality of displacement measuring devices to monitor the roundness of the wheel in real time, and can judge the out-of-roundness of the wheel more accurately according to the information fed back by each displacement measuring device after the wheel moves on the plurality of displacement measuring devices.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the displacement measuring assembly of the present invention;
FIG. 3 is a schematic view of the present invention installed on a track;
FIG. 4 is a schematic view of the present invention in position when installed on a track;
FIG. 5 is a schematic view of the distribution of a plurality of displacement measuring assemblies of the present invention
The displacement measuring device comprises a displacement measuring assembly 1, a contact plate 11, a sliding sleeve 12, an elastic resetting piece 13, a displacement sensor 14, a bottom fixing plate 15, a waterproof plug 16, a sliding bearing 17, a sensor fixing seat 18, a lead 19, a strip-shaped groove 110, a bearing fixing seat 111, a waterproof plug fixing seat 112, a limiting ring 113, a limiting flange 171, a fixing plate 2, a rail clamping assembly 3, an inner clamping rail 31, an outer clamping rail 32, a sleeper 4, a nail 5, an elastic strip 6 and a steel rail 7.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 5, and the embodiment provides a wheel tread out-of-roundness measuring mechanism for a railway vehicle, the measuring mechanism comprises two measuring units, each measuring unit comprises an installation part and a plurality of displacement measuring assemblies 1, the installation part in each measuring unit is adjustably installed at the bottom of one steel rail 7 in a railway, the plurality of displacement measuring assemblies 1 in each measuring unit are all arranged on the inner side of the corresponding steel rail 7, the plurality of displacement measuring assemblies 1 are sequentially and detachably installed on the installation part along the length extending direction of the steel rail 7, the wheel tread of the railway vehicle is in contact with the displacement measuring assemblies 1 when the railway vehicle moves, and the out-of-roundness of the wheel tread of the railway vehicle is judged through the displacement variation of each displacement measuring assembly 1.
The invention provides a measuring mechanism for the out-of-roundness of a wheel tread of a rail vehicle, which can measure the out-of-roundness information of the wheel tread of the rail vehicle, and compared with the mode that a long rod is used for continuously measuring one circle of a wheel rim in the existing measuring mechanism, the mechanism utilizes a plurality of displacement measuring devices to monitor the roundness of the wheel in real time, and after the wheel moves on the plurality of displacement measuring devices, the out-of-roundness of the wheel can be more accurately judged according to the information fed back by each displacement measuring device;
the mechanism is fixed on the inner side of a steel rail 7, and each set of mechanism is arranged between two adjacent sleepers 4 and is fixed on the steel rail 7 through a rail clamping assembly 3. The fixed plate 2 is above the elastic strip 6, while the two ends of the fixed plate 2 are shorter than the contact plate 11 of the measuring assembly 1 to avoid the spike 5, the waterproof plug 16 facing the inside of the rail;
the gap between the side surfaces of the contact plates of adjacent displacement measuring assemblies 1 on the fixed plate 2 does not exceed 1 mm.
The number of displacement measuring assemblies 1 on the fixed plate 2 is determined by the dimension of the displacement measuring mechanism 1 in the rail length direction and the distance between adjacent sleepers 4.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 5, and is further limited to the mounting part described in the first embodiment, in the present embodiment, the mounting part includes a fixing plate 2 and at least one set of rail clamping assemblies 3 for mounting the fixing plate 2, the rail clamping assemblies 3 are disposed between two adjacent sleepers 4 in the track, the rail clamping assemblies 3 are adjustably mounted at the bottom of one rail 7 in the track, the fixing plate 2 is disposed at the inner side of the rail 7, the fixing plate 2 is detachably mounted at the top of the rail clamping assemblies 3, and a plurality of displacement measuring assemblies 1 are sequentially detachably mounted on the fixing plate 2 along the length extension direction of the rail 7. Other components and connection modes are the same as those of the first embodiment.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 5, and the present embodiment further defines the rail clamping assemblies 3 according to the second embodiment, and in the present embodiment, there are two rail clamping assemblies 3;
the clamping rail assembly 3 comprises an inner clamping rail 31 and an outer clamping rail 32;
the inner clamping rail 31 and the outer clamping rail 32 are oppositely arranged on two sides of the steel rail 7, the inner clamping rail 31 and the outer clamping rail 32 are detachably connected through a bolt-nut mechanism, and the bolt-nut mechanism is arranged below the steel rail 7;
the lower part of the inner clamping rail 31 is provided with a first connecting through hole, the lower part of the outer clamping rail 32 is provided with a second connecting through hole, the first connecting through hole and the second connecting through hole are coaxially and oppositely arranged, the threaded end of a bolt in the bolt-nut mechanism sequentially penetrates through the first connecting through hole and the second connecting through hole and is arranged in a nut in the bolt-nut mechanism, and the nut is in threaded fastening connection with the bolt. The other components and the connection mode are the same as those of the second embodiment.
In the embodiment, the inner clamping rail 31 and the outer clamping rail 32 are clamped on the steel rail from two sides of the steel rail, so that the stability of supporting the fixing plate 2 is ensured, and the fixing plate 2 is supported by two clamping rail assemblies 3, so that the problem that when a single clamping rail assembly 3 is supported, the clamping rail assembly 3 is difficult to support in the middle of the fixing plate 2, so that a slight height difference is generated at two ends of the fixing plate 2, and the accuracy of measuring the out-of-roundness of the wheel is influenced is avoided;
fastening connection is carried out to inboard card rail 31 and outside card rail 32 through bolt nut mechanism, and through adjusting bolt's connection length, can adjust the distance between inboard card rail 31 and the outside card rail 32, be convenient for generally in the rail of multiple width, through the installation of bolt nut mechanism convenient to detach, produce the damage as the part and can in time replace simultaneously.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 5, and the present embodiment further defines the displacement measuring assembly 1 according to the third embodiment, in the present embodiment, the displacement measuring assembly 1 includes a contact plate 11, a sliding sleeve 12, an elastic reset piece 13, a displacement sensor 14, a bottom fixing plate 15, a waterproof plug 16, a sliding bearing 17, a sensor fixing seat 18 and a lead 19;
the bottom fixing plate 15 is detachably arranged on the upper surface of the fixing plate 2, a sliding bearing 17 is vertically and fixedly connected with the upper surface of the bottom fixing plate 15, the elastic resetting piece 13 is arranged in the sliding bearing 17, one end of the elastic resetting piece 13 is fixedly connected with the upper surface of the bottom fixing plate 15, the bottom of the sliding sleeve 12 is sleeved on the top of the elastic resetting piece 13, and the sliding sleeve 12 slides up and down in the sliding bearing 17, the contact plate 11 is arranged above the sliding bearing 17, and the bottom of the contact plate 11 is fixedly connected with the top of the sliding sleeve 12, the sensor fixing seat 18 is arranged in the elastic reset piece 13 along the vertical direction, the displacement sensor 14 is mounted in a sensor holder 18, a signal input terminal of the displacement sensor 14 is connected to the contact plate 11 through the sliding sleeve 12, a waterproof plug 16 is provided outside the circumferential side of the sliding bearing 17, and the signal output end of the displacement sensor 14 is connected with the waterproof plug 16 through a lead 19;
the fixed plate 2 is arranged above the spring strip 6, while the two ends of the fixed plate 2 are shorter than the contact plates 11 of the measuring assembly 1 to avoid the spikes 5, the watertight plug 16 facing the inside of the track. Other components and connection modes are the same as those of the third embodiment.
In this embodiment, the contact plate 11 is located above the sliding sleeve 12 and horizontally arranged, the elastic reset piece 13 is installed below the sliding piece 12, the displacement sensor 14 is installed inside the elastic reset piece 13, the bottom of the elastic reset piece 13 and the displacement sensor 14 is provided with a bottom fixing plate 15, and the displacement sensor 14 is fixed on the bottom fixing plate 15, the displacement sensor 14 can be a contact type or a non-contact type, one side end surface of the sliding plate 11 is close to the side surface of the top of the rail, the top surface of the sliding plate 11 is slightly lower than the top of the rail, the distance from the top of the rail is not more than half of the minimum difference value between the diameter of the wheel rim and the diameter of the tread of the rail vehicle, the wheel rim is in contact with the displacement measuring component, the roundness of the wheel is monitored in real time through the plurality of displacement measuring assemblies, and after the wheel moves on the plurality of displacement measuring devices, the out-of-roundness of the wheel can be judged more accurately according to the information fed back by each displacement measuring assembly.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 5, and the present embodiment further defines the contact plate 11 according to the fourth embodiment, in the present embodiment, the top surface of the contact plate 11 is slightly lower than the top of the rail, and the distance from the top of the rail is not more than half of the minimum difference between the diameter of the rim and the diameter of the tread of the rail vehicle. The other components and the connection mode are the same as those of the fourth embodiment.
In this embodiment, the middle of the lower end surface of the contact plate 11 is provided with a limit circular groove, the upper end of the sliding sleeve 12 is fixedly connected in the limit circular groove, and the annular protrusion at the top of the sliding sleeve 12 is used for matching with the limit circular groove to ensure the connection tightness.
The sixth specific implementation mode: the present embodiment is described with reference to fig. 1 to 5, and the present embodiment further defines the fixed plate 2 according to the fifth embodiment, and in the present embodiment, the gap between the side surfaces of the contact plates of the adjacent displacement measurement units 1 on the fixed plate 2 does not exceed 1 mm. The other components and the connection mode are the same as the fifth embodiment mode.
The seventh embodiment: referring to fig. 1 to 5, this embodiment is described, and the present embodiment further defines the bottom fixing plate 15 according to the sixth embodiment, in this embodiment, a strip-shaped groove 110 is formed on the upper surface of the bottom fixing plate 15, a center line of the strip-shaped groove 110 in the width direction is overlapped with a center line of the fixing plate 2 in the width direction, and a signal output end of the displacement sensor 14 is connected to the waterproof plug 16 through a wire 19 disposed in the strip-shaped groove. Other components and connection modes are the same as those of the sixth embodiment.
In this embodiment, the strip-shaped groove 110 facilitates the placement of the wires between the displacement sensor 14 and the waterproof plug 16.
The specific implementation mode is eight: referring to fig. 1 to 5, this embodiment is described, and the sliding bearing 17 is further limited to the seventh embodiment, in this embodiment, a limit flange 171 is provided at the bottom of the outer circumferential sidewall of the sliding bearing 17 along the circumferential direction, a bearing fixing seat 111 is sleeved on the upper portion of the outer circumferential sidewall of the sliding bearing, the bearing fixing seat 111 is provided at the upper end of the limit flange 171, and both sides of the bearing fixing seat 111 extend downward to be fixed to the upper surface of the bottom fixing plate 15. The other components and the connection mode are the same as those of the seventh embodiment.
The specific implementation method nine: referring to fig. 1 to 5, this embodiment is described, and this embodiment further defines the bearing fixing base 111 according to the eight specific embodiments, in this embodiment, a through groove is processed on one side of the bearing fixing base 111, the through groove and the strip-shaped groove 110 form a waterproof plug fixing area, a waterproof plug fixing base 112 is disposed in the fixing area, the waterproof plug fixing base 112, the bearing fixing base 111 and the bottom fixing plate 15 are all fixedly connected, a waterproof plug 16 is fixedly connected to the waterproof plug fixing base 112, and a signal output end of the displacement sensor 14 is connected to the waterproof plug 16 through a wire 19. The other components and the connection mode are the same as those of the eighth embodiment.
In this embodiment, waterproof plug fixing base is favorable to fixed waterproof plug 16, avoids 16 drops of waterproof plug when the mechanism during operation, influences signal transmission.
The detailed implementation mode is ten: the present embodiment is described with reference to fig. 1 to 5, and the present embodiment further defines the sensor fixing base 18 and the sliding sleeve 12 according to the ninth embodiment, and in the present embodiment, a limiting ring 113 is arranged between the sensor fixing seat 18 and the sliding sleeve 12, the limiting ring 113 is fixedly connected with the lower part of the inner circumferential side wall of the sliding sleeve 12, an annular bulge is arranged on the outer circular surface of one end of the sensor fixing seat 18 far away from the bottom fixing plate 15, the limiting ring 113 is arranged at the lower part of the annular bulge in the sensor fixing seat, the vertical end of the sensor fixing seat 18 is inserted in the limiting ring 113, and the outer circumferential side wall of the vertical end of the sensor fixing seat 18 is connected with the inner circumferential side wall of the limit ring 113 in a sliding manner, the elastic reset piece 13 is arranged between the limit ring 113 and the bottom fixing plate 15, one end of the elastic reset piece 13 is fixedly connected with the bottom of the limit ring 113, and the other end of the elastic reset piece 13 is fixedly connected with the upper surface of the bottom fixing plate 15. The other components and the connection mode are the same as those of the ninth embodiment.
In this embodiment, the retainer ring 113 is fixed to the lowest portion of the inner cylindrical surface of the sliding sleeve 12 by screws, and the upper end surface of the retainer ring 113 is in contact with the lower end surface of the large diameter portion of the sensor holder.
The inner side and the outer side of the limiting ring 113 are provided with plane structures, and the surfaces of the sliding sleeve 12 and the sensor fixing seat 18, which are contacted with the limiting ring 113, are also provided with plane structures matched with the plane structures, so that the contact plate 1 and the sliding sleeve 12 are prevented from rotating.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents, and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Principle of operation
When the railway vehicle runs, the wheels of the railway vehicle are pressed from 1(a) to 1(e) in sequence (or vice versa), when the wheel rim is just contacted with the contact plate 11 of one displacement measuring assembly 1, the contact plate 11 starts to move downwards, and after the lowest point of the wheel rim is contacted with the contact plate 11, the contact plate 11 keeps the current position and does not move downwards; when the lowest point of the wheel rim is separated from the contact plate 11, the contact plate 11 starts to move upward, and when the wheel rim is completely separated from the contact plate 11, the contact plate 11 is restored to the original position (highest point). When a wheel passes through the mechanism, a plurality of displacement measuring mechanisms 1 are simultaneously pressed, and the center of the wheel is positioned right above the lowest point of the rim of the wheel, so that the center of the wheel is considered to be positioned above the lowest contact plate 11; the out-of-roundness and the position of the wheel tread in the circumferential range are judged by measuring the height of the wheel rim and according to the change condition of the wheel rim height in the measurement result.
Claims (10)
1. The utility model provides a rail vehicle wheel tread out-of-roundness measuring mechanism which characterized in that: the measuring mechanism comprises two measuring units, each measuring unit comprises an installation part and a plurality of displacement measuring assemblies (1), the bottom of one steel rail (7) in the track is installed at the position of the installation part in each measuring unit in an adjustable mode, the inner sides of the corresponding steel rails (7) are all arranged in the plurality of displacement measuring assemblies (1) in each measuring unit, the plurality of displacement measuring assemblies (1) are sequentially detachably installed on the installation part along the length extending direction of the steel rails (7), wheel treads are in contact with the displacement measuring assemblies (1) when the rail vehicle moves, and the out-of-roundness of the wheel treads of the rail vehicle is judged through the displacement variation of the displacement measuring assemblies (1).
2. The mechanism of claim 1, wherein the mechanism is configured to measure out-of-roundness of a wheel tread of the rail vehicle: the installation department includes fixed plate (2) and at least a set of card rail set spare (3) that are used for installing fixed plate (2), card rail set spare (3) set up in the track between two adjacent sleepers (4), and the bottom of installing in the track a rail (7) of card rail set spare (3) position adjustable, fixed plate (2) set up the inboard in rail (7), and fixed plate (2) demountable installation is at the top of card rail set spare (3), and a plurality of displacement measuring component (1) are along the length extending direction of rail (7) demountable installation in proper order on fixed plate (2).
3. The mechanism of claim 2, wherein the mechanism is configured to measure out-of-roundness of a wheel tread of the rail vehicle: the number of the clamping rail assemblies (3) is two;
the clamping rail assembly (3) comprises an inner clamping rail (31) and an outer clamping rail (32);
the inner clamping rail (31) and the outer clamping rail (32) are oppositely arranged on two sides of the steel rail (7), the inner clamping rail (31) and the outer clamping rail (32) are detachably connected through a bolt-nut mechanism, and the bolt-nut mechanism is arranged below the steel rail (7);
the lower part of the inner clamping rail (31) is provided with a first connecting through hole, the lower part of the outer clamping rail (32) is provided with a second connecting through hole, the first connecting through hole and the second connecting through hole are coaxially and oppositely arranged, the threaded end of a bolt in the bolt-nut mechanism sequentially penetrates through the first connecting through hole and the second connecting through hole and is arranged in a nut in the bolt-nut mechanism, and the nut is in threaded fastening connection with the bolt.
4. The mechanism of claim 1, wherein the mechanism is configured to measure out-of-roundness of a wheel tread of the rail vehicle: the displacement measurement assembly (1) comprises a contact plate (11), a sliding sleeve (12), an elastic reset piece (13), a displacement sensor (14), a bottom fixing plate (15), a waterproof plug (16), a sliding bearing (17), a sensor fixing seat (18) and a lead (19);
the bottom fixing plate (15) is detachably mounted on the upper surface of the fixing plate (2), a sliding bearing (17) is fixedly connected to the upper surface of the bottom fixing plate (15) in a vertical mode, an elastic reset piece (13) is arranged in the sliding bearing (17), one end of the elastic reset piece (13) is fixedly connected with the upper surface of the bottom fixing plate (15), the bottom of a sliding sleeve (12) is sleeved at the top of the elastic reset piece (13), the sliding sleeve (12) slides up and down in the sliding bearing (17), a contact plate (11) is arranged above the sliding bearing (17), the bottom of the contact plate (11) is fixedly connected with the top of the sliding sleeve (12), a sensor fixing seat (18) is arranged in the elastic reset piece (13) in the vertical direction, a displacement sensor (14) is mounted in the sensor fixing seat (18), and the signal input end of the displacement sensor (14) penetrates through the sliding sleeve (12) to be connected with the contact plate (11), the waterproof plug (16) is arranged outside the circumference of the sliding bearing (17), and the signal output end of the displacement sensor (14) is connected with the waterproof plug (16) through a lead (19);
the fixed plate (2) is arranged above the elastic strip (6), and the two ends of the fixed plate (2) are shorter than the contact plate (11) of the measuring component (1) so as to avoid the spike (5), and the waterproof plug (16) faces the inner side of the track.
5. The mechanism of claim 4, wherein the mechanism is further configured to measure out-of-roundness of the wheel tread of the rail vehicle: the top surface of the contact plate (11) is lower than the top of the rail, and the distance from the top of the rail is not more than half of the minimum difference between the diameter of the wheel rim and the diameter of the tread of the rail vehicle.
6. The mechanism of claim 5, wherein the mechanism is further configured to measure out-of-roundness of the wheel tread of the rail vehicle: the gap between the side surfaces of the contact plates of the adjacent displacement measurement assemblies (1) on the fixed plate (2) is not more than 1 mm.
7. The mechanism of claim 6, wherein the mechanism is further configured to measure out-of-roundness of the wheel tread of the rail vehicle: the upper surface processing of bottom fixed plate (15) has bar groove (110), and bar groove (110) set up along width direction's central line and fixed plate (2) along width direction's central line coincidence, and the signal output part of displacement sensor (14) links to each other with waterproof plug (16) through wire (19) that set up in the bar groove.
8. The mechanism of claim 7, wherein the mechanism is configured to measure out-of-roundness of a wheel tread of the rail vehicle: the bottom of the outer circumferential side wall of the sliding bearing (17) is provided with a limiting flange (171) along the circumferential direction, the upper part of the outer circumferential side wall of the sliding bearing is sleeved with a bearing fixing seat (111), the bearing fixing seat (111) is arranged at the upper end of the limiting flange (171), and two sides of the bearing fixing seat (111) extend downwards to be fixedly connected with the upper surface of the bottom fixing plate (15).
9. The mechanism of claim 8, wherein the mechanism is configured to measure out-of-roundness of a wheel tread of the rail vehicle: one side processing of bearing fixing base (111) has logical groove, leads to groove and constitutes waterproof plug fixed area with bar groove (110), is equipped with waterproof plug fixing base (112) in the fixed area, and waterproof plug fixing base (112) are fixed connection with bearing fixing base (111) and bottom fixed plate (15), and the rigid coupling has waterproof plug (16) on waterproof plug fixing base (112), and the signal output part of displacement sensor (14) passes through wire (19) and links to each other with waterproof plug (16).
10. The mechanism of claim 8, wherein the mechanism is configured to measure out-of-roundness of a wheel tread of the rail vehicle: a limiting ring (113) is arranged between the sensor fixing seat (18) and the sliding sleeve (12), the limiting ring (113) is fixedly connected with the lower part of the inner circumferential side wall of the sliding sleeve (12), an annular bulge is arranged on the outer circular surface of one end of the sensor fixing seat (18) far away from the bottom fixing plate (15), the limiting ring (113) is arranged at the lower part of the annular bulge in the sensor fixing seat, the vertical end of the sensor fixing seat (18) is inserted in the limiting ring (113), and the outer circumferential side wall of the vertical end of the sensor fixing seat (18) is in sliding connection with the inner circumferential side wall of the limit ring (113), the elastic reset piece (13) is arranged between the limit ring (113) and the bottom fixing plate (15), one end of the elastic reset piece (13) is fixedly connected with the bottom of the limit ring (113), and the other end of the elastic reset piece (13) is fixedly connected with the upper surface of the bottom fixing plate (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011003201.9A CN111998818A (en) | 2020-09-22 | 2020-09-22 | Rail vehicle wheel tread non-roundness measuring mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011003201.9A CN111998818A (en) | 2020-09-22 | 2020-09-22 | Rail vehicle wheel tread non-roundness measuring mechanism |
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| CN111998818A true CN111998818A (en) | 2020-11-27 |
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| CN116495026A (en) * | 2023-06-19 | 2023-07-28 | 成都铁安科技有限责任公司 | Method and system for adjusting wheel set damage detection rod |
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