A gauge measurement device and a track inspection instrument

Abstract

The present invention provides a gauge measurement device and a track inspection instrument. The gauge measurement device includes a cross beam, a measurement wheel set and an auxiliary measurement wheel set. A displacement sensor, a connecting guide rod and a connecting component are arranged inside the cross beam. The connecting component includes a connecting seat, a measurement guide rod and a screw probe. The auxiliary measurement wheel set is provided with a universal ball, and the screw probe abuts against the universal ball. By using a displacement sensor on the cross beam to detect the gauge in real time, the present invention can not only reduce the gauge detection error to make the detection result more accurate, but also simplify the structure and reduce the weight. By setting the screw probe to abut against the universal ball for indirect measurement, the cross beam and the auxiliary measurement wheel set can be separately arranged. Since the measurement force is adjustable and does not affect the attitude, the measurement force and the spring force for ensuring the attitude are independent of each other. And the positions between the auxiliary measurement wheels and the auxiliary running wheels in the auxiliary measurement wheel set are relatively fixed, so as to ensure that the measurement point is always located at 16 mm.

Description

Technical Field

[0001] The present invention relates to the technical field of track detection, and particularly relates to a gauge measuring device and a track inspection instrument. Background Art

[0002] With the rapid development of technology and the improvement of people's living standards, high-speed trains, bullet trains and other means of travel have become one of the preferred tools for people to travel. Therefore, people are paying more and more attention to the safety performance of railway tracks.

[0003] The existing gauge measurement principle of the T-type track inspection instrument is as follows: The product uses two sensors (gauge sensor + gauge auxiliary sensor) to measure the gauge changes of two rails respectively, and the measured gauge value is obtained by combining and processing the two measurement signals through software.

[0004] In the prior art, the existing gauge measurement structure requires two sensor signals, and the gauge synthesis calculation increases the measurement uncertainty. Moreover, there is also a problem of synchronous trigger acquisition in the measurement of the two sensors. At the same time, it cannot be guaranteed that the measurement point of the gauge auxiliary measurement wheel is at the true 16 mm, which will further increase the measurement error. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a gauge measuring device and a track inspection instrument to at least solve the deficiencies in the above related technologies.

[0006] The present invention provides a gauge measuring device, including a cross beam, a measurement wheel set provided at one end of the cross beam, and an auxiliary measurement wheel set provided at the other end of the cross beam. A displacement sensor, a connecting guide rod, and a connecting component connecting the connecting guide rod and the auxiliary measurement wheel set are provided inside the cross beam. The displacement sensor is slidably arranged inside the cross beam. The auxiliary measurement wheel set is movably connected to the cross beam through the connecting component. The connecting component includes a connecting seat, a measurement guide rod provided inside the connecting seat, and a screw probe provided at one end of the measurement guide rod away from the connecting guide rod. A universal ball is provided at one end of the auxiliary measurement wheel set facing the screw probe, and the universal ball is correspondingly arranged with the screw probe, and the screw probe abuts against the universal ball.

[0007] Further, the auxiliary measurement wheel set includes an auxiliary measurement wheel seat, and the measurement wheel set includes a measurement wheel seat. An auxiliary measurement wheel and an auxiliary running wheel are fixedly provided on the auxiliary measurement wheel seat, and a measurement wheel and a running wheel are fixedly provided on the measurement wheel seat. The auxiliary running wheel and the running wheel can both be placed on the upper surface of the rail and closely adhere to the upper surface of the rail, and the sides of the auxiliary measurement wheel and the measurement wheel can closely adhere to the inner side surface of the rail.

[0008] Further, the auxiliary measurement wheel set further includes an auxiliary measurement wheel assembly and an auxiliary running wheel assembly disposed on the auxiliary measurement wheel seat. The auxiliary measurement wheel assembly is disposed at one end of the auxiliary running wheel assembly facing the connection assembly. The auxiliary running wheel assembly is provided with a transverse guide rod and a longitudinal guide rod. The auxiliary running wheel assembly is movably disposed on the auxiliary measurement wheel seat through the longitudinal guide rod, and the auxiliary measurement wheel assembly is movably disposed on the auxiliary running wheel assembly through the transverse guide rod.

[0009] Further, a first guide rod, a sensor assembly, and a connecting member connecting the first guide rod and the sensor assembly are further disposed in the cross beam. The first guide rod and the sensor assembly are arranged at different heights.

[0010] Further, the axes of the connecting guide rod, the measuring guide rod, and the sensor assembly are collinear.

[0011] Further, the sensor assembly includes a sensor pull rod disposed at one end of the displacement sensor facing the first guide rod. One end of the displacement sensor is connected to the sensor pull rod, and the other end is connected to the connecting guide rod.

[0012] Further, a first bearing fixing seat is further fixedly disposed in the cross beam. Linear bearings are symmetrically fixedly disposed at both ends inside the first bearing fixing seat. Both ends of the first guide rod can pass through the linear bearings and are respectively connected to the measurement wheel seat and the connecting member.

[0013] Further, a plurality of second bearing fixing seats are further fixedly disposed in the cross beam. Plastic bearings are symmetrically fixedly disposed at both ends inside the second bearing fixing seats. Both ends of the connecting guide rod can pass through the plastic bearings and are respectively connected to the displacement sensor and the measuring guide rod.

[0014] Further, a compression spring is further disposed in the connecting seat. The compression spring is sleeved on the measuring guide rod.

[0015] The present invention further provides a track inspection instrument, including the above-mentioned track gauge measuring device.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By using a displacement sensor on the cross beam to detect the track gauge in real time, not only can the track gauge detection error be reduced to make the detection result more accurate, but also the structure can be simplified and the weight can be reduced; specifically, by setting the screw tip to press against the universal ball for indirect measurement, the cross beam and the auxiliary measurement wheel set can be separately arranged; at the same time, since the measuring force is adjustable and does not affect the attitude, the measuring force and the spring force for ensuring the attitude are independent of each other; and the positions between the auxiliary measurement wheels and the auxiliary running wheels in the auxiliary measurement wheel set are relatively fixed, so as to ensure that the measurement point is always located at 16 mm in real time. Description of the Drawings

[0017] Figure 1 This is the overall structure diagram of the gauge measurement device in the first embodiment of the present invention;

[0018] Figure 2 This is the internal structure diagram of the crossbeam in the first embodiment of the present invention;

[0019] Figure 3 This is the overall structure diagram of the connection component in the first embodiment of the present invention;

[0020] Figure 4 This is the overall structure diagram of the sensor component in the first embodiment of the present invention;

[0021] Figure 5 This is the schematic diagram of the cooperation between the measurement wheel set and the rail in the first embodiment of the present invention;

[0022] Figure 6 This is the schematic diagram of the cooperation between the auxiliary measurement wheel set and the rail in the first embodiment of the present invention;

[0023] Figure 7 This is the partial exploded view of the auxiliary measurement wheel set in the first embodiment of the present invention;

[0024] Figure 8 This is the overall structure diagram of the track inspection instrument in the second embodiment of the present invention.

[0025] Description of main component symbols:

[0026]

[0027]

[0028] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific Embodiments

[0029] For ease of understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] Please refer to Figures 1 to 7 which shows a gauge measurement device in the first embodiment of the present invention, including a cross beam 100, a measurement wheel set 200 provided at one end of the cross beam 100, and an auxiliary measurement wheel set 300 provided at the other end of the cross beam 100. A displacement sensor 151, a connecting guide rod 170, and a connecting assembly 120 connecting the connecting guide rod 170 and the auxiliary measurement wheel set 300 are provided in the cross beam 100. The displacement sensor 151 is slidably disposed in the cross beam 100, and the auxiliary measurement wheel set 300 is movably connected to the cross beam 100 through the connecting assembly 120.

[0033] It can be understood that the auxiliary measurement wheel set 300 is movably connected to the cross beam 100 through the connecting assembly 120, so that the auxiliary measurement wheel set 300 and the cross beam 100 can be separately arranged, which not only meets the gauge measurement accuracy of 16 mm below the rail surface, but also further improves the overall portability and practicality.

[0034] In this application, the measurement wheel set 200 includes a measurement wheel seat 210, on which a measurement wheel 230 and a running wheel 220 are fixedly provided. The running wheel 220 can be placed on the upper surface of the rail 400 and can float up and down closely against the rail. The side surface of the measurement wheel 230 can be closely attached to the inner side surface of the rail 400.

[0035] It can be understood that a measurement wheel seat 210 is slidably installed at one end of the cross beam 100. A running wheel 220 is rotatably connected to the bottom of the measurement wheel seat 210 through a rotating shaft. The running wheel 220 is an insulating ceramic wheel and can be placed on the upper surface of the rail 400. A measurement wheel 230 is fixedly installed on the inner side of the measurement wheel seat 210 through bolts, guide shafts, and linear bearings. The measurement wheel 230 can be closely attached to the inner side surface of the rail 400 by spring force. The relative positions of the measurement wheel 230 and the running wheel 220 are fixed to ensure that the measurement wheel 230 measures at 16 millimeters below the upper surface of the rail 400.

[0036] Further, the auxiliary measurement wheel set 300 includes an auxiliary measurement wheel seat 310. An auxiliary measurement wheel 331 and an auxiliary running wheel 321 are fixedly provided on the auxiliary measurement wheel seat 310. The auxiliary running wheel 321 can be placed on the upper surface of the rail 400 and can float up and down closely against the rail. The side surface of the auxiliary measurement wheel 331 can closely adhere to the inner side surface of the rail 400.

[0037] Specifically, the auxiliary measurement wheel set 300 further includes an auxiliary measurement wheel assembly 330 and an auxiliary running wheel assembly 320 provided on the auxiliary measurement wheel seat 310. The auxiliary measurement wheel assembly 330 is arranged at one end of the auxiliary running wheel assembly 320 facing the connecting assembly 120. A longitudinal guide rod 340 and an installation structure 350 connecting the auxiliary running wheel assembly 320 and the auxiliary measurement wheel assembly 330 are provided on the auxiliary running wheel assembly 320. The auxiliary running wheel assembly 320 is movably arranged on the auxiliary measurement wheel seat 310 through the longitudinal guide rod 340. The installation structure 350 includes an installation part 351 and transverse guide rods 352 respectively arranged on both sides of the installation part 351. The auxiliary measurement wheel assembly 330 is movably arranged on the auxiliary running wheel assembly 320 through the transverse guide rods 352.

[0038] It can be understood that an auxiliary measurement wheel seat 310 is installed at the other end of the cross beam 100. An auxiliary running wheel assembly 320 is provided at the bottom of the auxiliary measurement wheel seat 310. An auxiliary running wheel 321 is also rotatably connected to the bottom of the auxiliary running wheel assembly 320 through a rotating shaft. The auxiliary running wheel 321 can also be placed on the upper surface of the rail 400 and can float up and down closely against the surface of the rail 400. An auxiliary measurement wheel assembly 330 is provided inside the auxiliary measurement wheel seat 310. An auxiliary measurement wheel 331 can also be fixedly installed on the auxiliary measurement wheel assembly 330 through bolts, a rotating shaft and bearings. The side surface of the auxiliary measurement wheel 331 can closely adhere to the inner side surface of another rail 400. The relative positions of the auxiliary measurement wheel 331 and the auxiliary running wheel 321 are fixed, ensuring that the auxiliary measurement wheel 331 measures at 16 millimeters below the upper surface of the rail 400, that is, the measurement wheel 230 and the auxiliary measurement wheel 331 can respectively closely adhere to the inner side surfaces of the two rails 400 for measuring the gauge.

[0039] Further, the auxiliary measurement wheel seat 310 and the auxiliary running wheel assembly 320 are connected by a longitudinal guide rod 340. The auxiliary running wheel 321 on the auxiliary measurement wheel seat 310 and the auxiliary running wheel assembly 320 can always closely adhere to the rail surface of the rail 400. The auxiliary measurement wheel assembly 330 and the auxiliary running wheel assembly 320 are connected by a transverse guide rod 352. The auxiliary measurement wheel assembly 330 can follow the movement of the auxiliary running wheel assembly 320, that is, the universal ball can follow the movement of the auxiliary running wheel 321.

[0040] The universal ball is connected to the mounting structure 350, thus realizing the connection between the universal ball and the auxiliary measuring wheel assembly 330. The mounting member 351 is connected to the transverse guide rod 352. The auxiliary measuring wheel assembly 330 is connected to the mounting structure 350, and the auxiliary measuring wheel assembly 330 is also connected to the transverse guide rod 352, so that the auxiliary measuring wheel assembly 330 is always in close contact with the rail surface of the rail 400, that is, the universal ball can follow the movement of the auxiliary measuring wheel assembly 330.

[0041] Preferably, the connection assembly 120 includes a connection seat 121, a measuring guide rod 110 disposed within the connection seat 121, and a screw probe 123 disposed at one end of the measuring guide rod 110 away from the connection guide rod 170. A universal ball is provided at one end of the auxiliary measuring wheel set 300 facing the screw probe 123. The universal ball is disposed corresponding to the screw probe 123, and the screw probe 123 abuts against the universal ball.

[0042] Further, a compression spring 124 is also disposed within the connection seat 121, and the compression spring 124 is sleeved on the measuring guide rod 110.

[0043] It can be understood that the universal ball can follow the movement of the auxiliary running wheel assembly 320, and at the same time, the universal ball can also follow the movement of the auxiliary measuring wheel assembly 330. The auxiliary running wheel assembly 320 is in close contact with the top surface of the rail 400, and the auxiliary measuring wheel assembly 330 is in close contact with the side surface of the rail 400. Since the relative positions of the auxiliary measuring wheel assembly 330 and the auxiliary running wheel assembly 320 are fixed, the measurement at 16 mm can still be maintained when the auxiliary measuring wheel assembly 330 and the auxiliary running wheel assembly 320 are in a dynamic state.

[0044] In addition, the screw probe 123 constantly presses against the universal ball through the compression spring 124, and at the same time, it is ensured that the end face of the screw probe 123 has sufficient area to press against the universal ball when the universal ball is moving. That is, the screw probe 123 can move in a telescopic manner along with the universal ball, which can drive the displacement sensor 151 on the other side to move, thereby triggering a displacement signal.

[0045] Since the relative positions of the measuring wheel 230 and the running wheel 220 are fixed, the measurement at 16 mm can still be ensured when the running wheel 220 and the measuring wheel 230 are in a dynamic state. The sensor pull rod 152 is connected to the measuring wheel 230 in a staggered manner, and when the measuring wheel 230 moves in close contact with the side surface of the rail 400, it drives the sensor pull rod 152 to move, triggering a displacement signal.

[0046] It should be noted that the connecting seat 121 is fixedly installed at one end of the cross beam 100 facing the auxiliary measuring wheel set 300 through bolts. When the gauge becomes larger, the measuring wheel seat 210 and the auxiliary measuring wheel seat 310 will squeeze the compression spring 124, so that the compression spring 124 pushes the screw probe 123 to continuously press against the universal ball, so that the side surfaces of the measuring wheel 230 and the auxiliary measuring wheel assembly 330 are closely attached to the inner side surfaces of the two steel rails 400, realizing real-time and accurate detection of the gauge; when the gauge becomes smaller, the measuring wheel seat 210 and the auxiliary measuring wheel seat 310 will stretch the compression spring 124, and the compression spring 124 can also make the screw probe 123 press against the universal ball, so that the entire gauge measuring device adapts to the reduction of the gauge and detects the gauge.

[0047] In the present application, a first guide rod 140, a sensor assembly 150, and a connecting member 160 connecting the first guide rod 140 and the sensor assembly 150 are further provided in the cross beam 100. The first guide rod 140 and the sensor assembly 150 are arranged at different heights; the axes of the connecting guide rod 170, the measuring guide rod 110, and the sensor assembly 150 are collinear.

[0048] It can be understood that the first guide rod 140 and the sensor assembly 150 are arranged at different heights, which can reduce the forces on the first guide rod 140 and the sensor assembly 150 when the gauge measuring device moves. On the one hand, it can improve the overall structural strength, and on the other hand, it can avoid the problems of bending and unsmooth sliding of a long rod, increasing the overall stability; and the collinearity of the axes of the connecting guide rod 170, the measuring guide rod 110, and the sensor assembly 150 enables the overall cross beam 100 to move along with the movement of the measuring wheel set 200 and the auxiliary measuring wheel set 300, avoiding measurement deviation.

[0049] Specifically, the sensor assembly 150 is provided with a sensor pull rod 152 at one end of the displacement sensor 151 facing the first guide rod 170. One end of the displacement sensor 151 is connected to the sensor pull rod 152, and the other end is connected to the connecting guide rod 170.

[0050] Preferably, the displacement sensor 151 adopts a pull rod type linear displacement sensor. The housing of the displacement sensor 151 can be fixedly connected to the auxiliary measuring wheel seat 310, and the sensor pull rod 152 can be fixedly connected to the measuring wheel seat 210. In this way, when measuring, the sensor pull rod 152 and the housing of the displacement sensor 151 move linearly along the two ends of the gauge measurement respectively, and the gauge can be detected in real time and accurately through a pull rod type linear displacement sensor.

[0051] In the present application, a first bearing fixing seat 180 is further fixedly arranged inside the cross beam 100. Linear bearings are symmetrically and fixedly arranged at both ends inside the first bearing fixing seat 180. Both ends of the first guide rod 140 can penetrate through the linear bearings and are respectively connected to the measuring wheel seat 210 and the connecting member 160.

[0052] Furthermore, a plurality of second bearing fixing seats 190 are further fixedly arranged inside the cross beam 100. Plastic bearings are symmetrically and fixedly arranged at both ends inside the second bearing fixing seat 190. Both ends of the connecting guide rod 170 can penetrate through the plastic bearings and are respectively connected to the displacement sensor 151 and the measuring guide rod 110.

[0053] It can be understood that the first guide rod 140 is connected to the cross beam 100 through the first bearing fixing seat 180, providing a support point for the first guide rod 140, further avoiding the problems of bending and unsmooth sliding caused by the excessive length of the first guide rod 140, and improving the stability of the overall structure. Similarly, the connecting guide rod 170 can also be connected to the cross beam 100 through the second bearing fixing seat 190, and can also avoid the problems of bending and unsmooth sliding caused by the excessive length of the connecting guide rod 170.

[0054] Please refer to Figure 8 , which shows the track inspection instrument in the second embodiment of the present invention. The track inspection instrument includes the above-mentioned track gauge measuring device, and the auxiliary measuring wheel seat 310 is connected to the side wall 500.

[0055] In summary, for the track gauge measuring device and the track inspection instrument in the above embodiments of the present invention, by using a displacement sensor on the cross beam to detect the track gauge in real time, not only can the track gauge detection error be reduced to make the detection result more accurate, but also the structure can be simplified and the weight can be reduced. Specifically, by setting the screw tip to press against the universal wave beads for indirect measurement, the cross beam and the auxiliary measuring wheel set can be separately arranged. At the same time, since the measuring force is adjustable and does not affect the attitude, the measuring force and the spring force for ensuring the attitude are independent of each other. And the positions of the auxiliary measuring wheels and the auxiliary running wheels in the auxiliary measuring wheel set are relatively fixed, thereby ensuring that the measuring point is always located at 16 mm exactly.

[0056] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A gauge measurement device, characterized in that, It includes a cross beam, a measuring wheel set provided at one end of the cross beam, and an auxiliary measuring wheel set provided at the other end of the cross beam. A displacement sensor, a connecting guide rod, and a connecting component connecting the connecting guide rod and the auxiliary measuring wheel set are provided inside the cross beam. The displacement sensor is slidably arranged inside the cross beam. The auxiliary measuring wheel set is movably connected to the cross beam through the connecting component. The connecting component includes a connecting seat, a measuring guide rod provided inside the connecting seat, and a screw measuring head provided at one end of the measuring guide rod away from the connecting guide rod. A universal ball is provided at one end of the auxiliary measuring wheel set facing the screw measuring head. The universal ball is arranged corresponding to the screw measuring head, and the screw measuring head abuts against the universal ball. The auxiliary measuring wheel set includes an auxiliary measuring wheel seat, and the measuring wheel set includes a measuring wheel seat. An auxiliary measuring wheel and an auxiliary running wheel are fixedly provided on the auxiliary measuring wheel seat. A measuring wheel and a running wheel are fixedly provided on the measuring wheel seat. The auxiliary running wheel and the running wheel are both placed on the upper surface of the rail and closely attached to the upper surface of the rail. The sides of the auxiliary measuring wheel and the measuring wheel are closely attached to the inner side surface of the rail. A first guide rod, a sensor component, and a connecting piece connecting the first guide rod and the sensor component are further provided inside the cross beam. The first guide rod and the sensor component are arranged at different heights. The sensor component includes a sensor pull rod provided at one end of the displacement sensor facing the first guide rod. One end of the displacement sensor is connected to the sensor pull rod, and the other end is connected to the connecting guide rod. A plurality of second bearing fixing seats are further fixedly provided inside the cross beam. Plastic bearings are symmetrically fixedly provided at both ends inside the second bearing fixing seats. Both ends of the connecting guide rod penetrate through the plastic bearings and are respectively connected to the displacement sensor and the measuring guide rod. A compression spring is further provided inside the connecting seat. The compression spring is sleeved on the measuring guide rod. The axes of the connecting guide rod, the measuring guide rod, and the sensor component are collinear.

2. The gauge measurement device according to claim 1, characterized in that, The auxiliary measuring wheel set further includes an auxiliary measuring wheel component and an auxiliary running wheel component provided on the auxiliary measuring wheel seat. The auxiliary measuring wheel component is provided at one end of the auxiliary running wheel component facing the connecting component. A transverse guide rod and a longitudinal guide rod are provided on the auxiliary running wheel component. The auxiliary running wheel component is movably arranged on the auxiliary measuring wheel seat through the longitudinal guide rod. The auxiliary measuring wheel component is movably arranged on the auxiliary running wheel component through the transverse guide rod.

3. The gauge measuring device according to claim 1, characterized in that, A first bearing fixing seat is further fixedly provided inside the cross beam. Linear bearings are symmetrically fixedly provided at both ends inside the first bearing fixing seats. Both ends of the first guide rod penetrate through the linear bearings and are respectively connected to the measuring wheel seat and the connecting piece.

4. A track inspection instrument, characterized in that, It includes the gauge measuring device according to any one of claims 1-3.

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