Sensor fixing device for track vibration isolator detection

Abstract

The utility model provides a sensor fixing device for track vibration isolator detection, which comprises a base plate, a first sensor support and a second sensor support, the first sensor support and the second sensor support are arranged on the base plate, the base plate is fixed in an outer sleeve of a vibration isolator, and the first sensor support can enable a first distance measuring sensor to be located above the upper end face of an elastic unit. Therefore, the first distance measuring sensor can detect the relative distance between the outer sleeve and the elastic unit; due to the fact that the second sensor support can enable the second distance measuring sensor to be located at the position, corresponding to the gap between the outer sleeve and the elastic unit, in the axial direction of the outer sleeve, the second distance measuring sensor can detect the relative distance between the outer sleeve and the lower foundation on the lower portion through the gap. As mentioned above, through the fixing device, the first distance measuring sensor and the second distance measuring sensor can be installed at ideal preset positions, and therefore more kinds of distance measuring data can be obtained, and the installation condition and the working condition of the vibration isolator can be better detected.

Description

Technical Field

[0001] The utility model belongs to the technical field of track detection devices, and in particular relates to a sensor fixing device for detecting a track vibration isolator. Background Art

[0002] Floating trackbeds have been widely used in subway lines and have achieved excellent track vibration reduction effects. The floating trackbed usually includes a trackbed plate and multiple vibration isolators embedded in the trackbed plate. The vibration isolators generally include an outer sleeve embedded in the trackbed plate and an elastic unit arranged in the lower part of the outer sleeve. The elastic unit generally includes a rubber spring body. The trackbed plate is placed on the lower foundation through multiple vibration isolators. The entire line is formed by multiple trackbed plates arranged in sequence, so there are a lot of vibration isolators. Due to various reasons such as deviations in construction and operating losses, a few vibration isolators may not be stressed, or multiple vibration isolators in a trackbed plate may be unevenly stressed, which affects the vibration reduction effect of the vibration isolator and the stability of line operation. At present, although there are some detection structures related to vibration isolators, these detection structures cannot well detect the phenomenon that the vibration isolator is not stressed or is unevenly stressed.

[0003] For example, CN110552263A discloses a floating plate track vertical displacement measuring device, in which a displacement sensor is installed on the side wall of the inner cylinder (elastic unit), with the detection end of the displacement sensor facing upward, to detect the displacement of the inner cylinder cover, that is, the vertical displacement of the floating plate. This solution cannot detect the situation where the vibration isolator is not subjected to force, and since there is only a small gap between the outer cylinder and the inner cylinder, the installation of the displacement sensor is very inconvenient. Utility Model Content

[0004] The utility model is designed to solve the above problems, and aims to provide a sensor fixing device that can effectively fix more sensors with different functions in a vibration isolator so as to obtain more data. The utility model adopts the following technical solutions:

[0005] The utility model provides a sensor fixing device for detecting a rail vibration isolator, which is used for fixing one or more first ranging sensors and one or more second ranging sensors in the vibration isolator, wherein the vibration isolator has an outer sleeve and an elastic unit arranged at the lower part of the outer sleeve, wherein the elastic unit has an annular upper end face, and a gap is provided between the outer periphery of the elastic unit and the outer sleeve, and the device has the following technical features, comprising: a base plate, which is fixed in the outer sleeve and is located above the elastic unit; one or more first sensor brackets, which are arranged on the base plate and are used for installing the first ranging sensor and making it located above the upper end face; and one or more second sensor brackets, which are arranged on the base plate and are used for installing the second ranging sensor and making it located at a position corresponding to the gap in the axial direction of the outer sleeve.

[0006] The sensor fixing device for detecting rail vibration isolators provided by the utility model may also have such technical features, wherein the first sensor bracket is an L-shaped bracket, one end of which is fixed on the edge of the base plate, and the other end is a first mounting end, the first mounting end is located above the base plate and is used to install the first ranging sensor, the edge of the base plate has one or more clearance notches, which are located next to the corresponding first sensor bracket, and are used to allow the first ranging sensor installed on the first sensor bracket to measure the distance to the upper end surface below through the clearance notch.

[0007] The sensor fixing device for detecting rail vibration isolators provided by the utility model may also have such a technical feature, wherein there are multiple first sensor brackets, which are respectively arranged on the edge of the base plate and evenly distributed along a circle, and the multiple first mounting ends are in the same position in the axial direction of the outer sleeve.

[0008] The sensor fixing device for detecting rail vibration isolators provided by the utility model may also have such technical features, wherein the second sensor bracket is an L-shaped bracket, one end of which is fixed to the edge of the base plate, and the other end is a second mounting end, the second mounting end is located below the base plate and is used to install the second ranging sensor, the second mounting end is in the shape of a flat plate, and its surface direction is perpendicular to the radial direction of the outer sleeve.

[0009] The sensor fixing device for detecting rail vibration isolators provided by the utility model may also have such a technical feature, wherein there are multiple second sensor brackets, which are respectively arranged on the edge of the base plate and evenly distributed along a circle, and the multiple second mounting ends are in the same position in the axial direction of the outer sleeve.

[0010] The sensor fixing device for detecting rail vibration isolators provided by the utility model may also have such technical features, which also includes: a fixing component for fixing the base plate in the outer sleeve, wherein the edge portion of the base plate has a plurality of fixing member mounting holes, and the axial extension lines of the fixing member mounting holes pass through the center of the base plate, and the fixing component includes a plurality of fixing members, which are respectively arranged in the plurality of fixing member mounting holes, and the outer ends of the fixing members abut against the inner wall of the outer sleeve.

[0011] The sensor fixing device for detecting the rail vibration isolator provided by the utility model may also have such technical features, which also includes: a positioning component, used to position the relative position of the base plate relative to the elastic unit, wherein the edge portion of the base plate has a plurality of positioning member mounting holes, the axial direction of the positioning member mounting holes is perpendicular to the surface direction of the base plate, the positioning component includes a plurality of positioning members, which are respectively arranged in the plurality of positioning member mounting holes, and the lower end of the positioning member abuts against the upper end surface of the elastic unit.

[0012] The sensor fixing device for detecting rail vibration isolators provided by the utility model may also have such technical features, wherein the inner wall of the outer sleeve has a plurality of mounting grooves, the plurality of mounting grooves are at the same position in the axial direction of the outer sleeve, and the edge of the base plate has a plurality of groups of engaging protrusions, which respectively match the plurality of mounting grooves and are used to engage with the corresponding mounting grooves.

[0013] The sensor fixing device for detecting rail vibration isolators provided by the utility model may also have such technical features, wherein the installation groove is a trapezoidal groove having two relatively inclined side walls, each group of the engaging protrusions includes two engaging protrusions, each of the engaging protrusions is wedge-shaped, the spacing between the two engaging protrusions matches the width of the corresponding installation groove, and the opposite outer side surfaces of the two engaging protrusions in each group are respectively abutted against the two side walls.

[0014] The sensor fixing device for detecting the rail vibration isolator provided by the utility model may also have such technical features, which also includes: a support member, which is arranged in the middle of the upper surface of the base plate; and a support plate, which is arranged at the upper end of the support member, wherein the first sensor bracket is installed on the upper surface of the base plate, and the distance between the support plate and the base plate is greater than the height of the first sensor bracket.

[0015] Function and effect of utility model

[0016] According to the sensor fixing device for detecting the rail vibration isolator of the utility model, it includes a base plate, a first sensor bracket and a second sensor bracket arranged on the base plate. Since the base plate is fixed in the outer sleeve of the vibration isolator, and the first sensor bracket can make the first distance measuring sensor be located above the upper end surface of the elastic unit, the first distance measuring sensor can detect the relative distance between the outer sleeve and the elastic unit; similarly, since the second sensor bracket can make the second distance measuring sensor be located at a position corresponding to the gap between the outer sleeve and the elastic unit in the axial direction of the outer sleeve, the second distance measuring sensor can use the gap to detect the relative distance between the outer sleeve and the lower foundation below. As described above, through the fixing device, the first and second distance measuring sensors can be installed at an ideal predetermined position, so that more distance measuring data can be obtained, so as to better detect the installation condition and working condition of the vibration isolator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the vibration isolator and the detection device in the embodiment of the utility model;

[0018] Figure 2 is a cross-sectional view of a vibration isolator and a detection device in an embodiment of the utility model;

[0019] Figure 3 is a cross-sectional view of the outer sleeve in an embodiment of the utility model;

[0020] Figure 4 It is an orthographic projection diagram of the outer sleeve in the embodiment of the utility model;

[0021] Figure 5 is a three-dimensional diagram of an elastic unit in an embodiment of the utility model;

[0022] Figure 6 It is a three-dimensional diagram of the detection device in the embodiment of the utility model;

[0023] Figure 7 is a side view of the detection device in the embodiment of the utility model;

[0024] Figure 8 is a three-dimensional diagram of a base plate in an embodiment of the utility model;

[0025] Fig. 9 It is an orthographic projection diagram of the base plate in the embodiment of the utility model;

[0026] Fig.10 It is a three-dimensional diagram of the first sensor bracket in the embodiment of the utility model.

[0027] Reference numerals:

[0028] Detection device 100; sensor fixing device 10 for detecting rail vibration isolator; base plate 11; flat plate portion 111; first support tube mounting hole 1111; clearance notch 1112; first bracket mounting hole 1113; second bracket mounting hole 1114; positioning member mounting hole 1115; fitting protrusion 112; outer side surface 1121; fixing protrusion 113; fixing member mounting hole 1131; first sensor bracket 121; first fixing plate portion 1211; bracket fixing hole 12111; first mounting plate portion 1212; sensor mounting hole 12121; second sensor bracket 122; second fixing plate portion 1221; second mounting plate portion 12 22; positioning assembly 13; positioning member 131; support tube 14; support plate 15; second support tube mounting hole 151; first distance measuring sensor 21; second distance measuring sensor 22; vibration isolator 200; outer sleeve 210; first tube portion 211; second tube portion 212; flange portion 213; support protrusion 214; fixing groove 2141; side wall 21411; gap 216; elastic unit 220; unit support plate 221; upper end surface 221a; support sheet portion 2211; upper shell 222; cover-like body 2221; support end portion 2222; lower shell 223; rubber spring 224; unit limit column 230; upper cover plate 240. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the sensor fixing device for detecting rail vibration isolators of the present invention is specifically described below in conjunction with embodiments and drawings.

[0030] <Example>

[0031] This embodiment provides a sensor fixing device for detecting track vibration isolators (hereinafter referred to as the fixing device), which is a part of the detection equipment arranged in the vibration isolator of the floating track bed, and is used to fix multiple sensors in the vibration isolator. The floating track bed includes a track bed plate and two rows of vibration isolators embedded in the track bed plate. The track bed plate is arranged on the lower foundation through multiple vibration isolators, and there is a certain gap between the track bed plate and the lower foundation. The detection equipment is used to detect the installation status and working status of the vibration isolator.

[0032] The fixing device is based on the structural design of the vibration isolator, so the structure of the vibration isolator will be briefly described below.

[0033] Figure 1 is a three-dimensional diagram of the vibration isolator and the detection equipment in this embodiment, Figure 2 is a cross-sectional view of the vibration isolator and the detection device in this embodiment.

[0034] like Figure 1 and Figure 2As shown, the vibration isolator 200 includes an outer sleeve 210 , an elastic unit 220 , a unit limiting column 230 and an upper cover plate 240 .

[0035] The outer sleeve 210 is a metal sleeve. When the concrete ballast plate is cast, the outer sleeve 210 is embedded in the metal sleeve and integrated with the concrete ballast plate.

[0036] Figure 3 : is a cross-sectional view of the outer sleeve in this embodiment, Figure 4 It is an orthographic projection diagram of the outer sleeve in this embodiment.

[0037] like Figures 1 to 4 As shown, the outer sleeve 210 includes a first sleeve portion 211 , a second sleeve portion 212 , a plurality of support protrusions 214 and a flange portion 213 that are integrally formed and coaxial.

[0038] The cross section of the first barrel portion 211 is irregularly shaped, and one end of the first barrel portion 211 is connected to one end of the second barrel portion 212. The cross section of the second barrel portion 212 is annular, and a plurality of support protrusions 214 are formed on the inner surface of the second barrel portion 212 and are located at the same height in the axial direction of the outer sleeve 210. There is a certain interval between two adjacent support protrusions 214, so that the shape of the inner wall of the second barrel portion 212 with the support protrusions 214 is consistent with the shape of the inner wall of the first barrel portion 211. In this embodiment, there are three support protrusions 214, which are evenly distributed along the circumference of the second barrel portion 211.

[0039] From the axial direction of the outer sleeve 210 (i.e. Figure 4 ), the second barrel 212 has a plurality of fixing grooves 2141 on the inner wall of the supporting protrusion 214, the fixing grooves 2141 are generally trapezoidal grooves, the width of the groove opening is greater than the width of the groove bottom, and the cross section of the fixing grooves 2141 in the axial direction of the outer sleeve 210 is a trapezoid with rounded corners and slightly curved edges. The fixing grooves 2141 have two facing side walls 21411, and the two side walls 21411 are inclined relative to each other.

[0040] The flange portion 213 extends from the other end of the second cylinder portion 212 , and the flange portion 213 is in a circular ring shape, and is used to enhance the bonding between the outer sleeve 210 and the track bed plate.

[0041] The upper cover plate 240 is a metal plate whose shape matches the cross-sectional shape of the first barrel portion 211 . The upper cover plate 240 is arranged at the upper end of the first barrel portion 211 , thereby closing the upper end of the outer sleeve 210 and protecting the elastic unit 220 .

[0042] Figure 5 is a three-dimensional diagram of the elastic unit in this embodiment.

[0043] like Figure 5As shown, the elastic unit 220 includes a unit support plate 221 , an upper shell 222 , a lower shell 223 and a rubber spring 224 .

[0044] The upper shell 222 and the lower shell 223 are interlocked and can move relative to each other within a certain range. The rubber spring 224 is accommodated inside the upper shell 222 and the lower shell 223, one end of which is fixed on the inner top surface of the upper shell 222, and the other end is fixed on the inner bottom surface of the lower shell 223. The elasticity of the rubber spring 224 realizes the vibration isolation and vibration reduction effects of the track.

[0045] The upper shell 222 includes a cover-shaped body 2221 and a plurality of support ends 2222. The cover-shaped body 2221 is in a circular cover shape, and the support ends 2222 extend from the upper end of the cover-shaped body 2221 in the axial direction along the radial direction of the cover-shaped body 2221. The support ends 2222 are in an arc-shaped block shape with rounded corners, and the diameter of the upper shell 222 at the plurality of support ends 2222 is close to the inner diameter of the second cylinder 212 where the support protrusion 214 is not provided.

[0046] The unit support plate 221 is a metal flat plate, and its outer contour shape is basically consistent with the outer contour shape of the upper end of the upper shell 222. Its edge portion has a plurality of support pieces 2211, and its middle portion has a circular clearance hole and a plurality of round bottom notches for installing screws connected to the clearance hole. The unit support plate 221 is fixed on the upper surface of the upper shell 222, and the support piece 2211 is aligned with the support end 2222 respectively. The upper surface of the unit support plate 221 is the upper end surface 221a of the entire elastic unit 220, and the upper end surface 221a is an annular plane.

[0047] like Figure 2 As shown, the elastic unit 220 is disposed in the lower part of the outer sleeve 210, and is partially located outside the lower part of the outer sleeve 210. The upper end of the elastic unit 220, the support sheet 2211 of the unit support plate 221 and the support end 2222 of the upper shell 222 abut against the lower surface of the corresponding support protrusion 214 in the outer sleeve 210. The lower end of the elastic unit 220 abuts against the lower foundation and is laterally limited by the unit limiting column 230.

[0048] The diameter at the support end 2222 of the elastic unit 220 is close to the inner diameter of the second cylinder portion 212 of the outer sleeve 210, so a gap 216 is formed between two adjacent support ends 2222 of the elastic unit 220 and the inner wall of the outer sleeve 210, and between the cover-shaped body 2221 of the elastic unit 220 and the inner wall of the outer sleeve 210. At two adjacent support ends 2222, the gap 216 penetrates along the axial direction of the outer sleeve 210.

[0049] The detection device 100 is disposed in the outer sleeve 210 and is located above the elastic unit 220 .

[0050] Figure 6 is a three-dimensional diagram of the detection device in this embodiment, Figure 7 is a side view of the detection device in this embodiment.

[0051] like Figure 6 and Figure 7 As shown, the detection device 100 includes a fixing device 10, a plurality of first distance measuring sensors 21, a plurality of second distance measuring sensors 22 and a data acquisition device (not shown in the figure).

[0052] The fixing device 10 includes a base plate 11 , a plurality of first sensor brackets 121 , a plurality of second sensor brackets 122 , a fixing assembly (not shown in the figure), a positioning assembly 13 , a support member 14 and a support plate 15 .

[0053] The base plate 11 is used to be fixed in the outer sleeve 210 to provide support for other components.

[0054] Figure 8 is a three-dimensional diagram of the base plate in this embodiment, Fig. 9 It is an orthographic projection of the base plate in this embodiment.

[0055] like Figure 8 and Fig. 9 As shown, the base plate 11 includes an integrally formed flat plate portion 111 , a plurality of engaging protrusions 112 , and a plurality of fixing protrusions 113 .

[0056] The flat plate portion 111 is in the shape of an irregular flat plate, and its overall shape is close to a disc shape. A first support tube mounting hole 1111 is provided at the center of the flat plate portion 111, and a threaded groove is provided on the inner wall of the first support tube mounting hole 1111. A plurality of clearance notches 1112 are provided at the edge of the flat plate portion 111, and the plurality of clearance notches 1112 are evenly distributed along a circle. The clearance notches 1112 are rectangular notches with rounded corners, and their opening direction is slightly inclined relative to the radial direction of the base plate 11, and the length of the clearance notches 1112 is approximately half of the maximum diameter of the flat plate portion 111. The edge of the flat plate portion 111 at the clearance notch 1112 is in an arc shape that matches the curvature of the inner wall of the second cylinder portion 212 (the inner wall without the support protrusion 2121).

[0057] A plurality of engaging protrusions 112 are respectively formed on the edge of the flat plate portion 111. Each engaging protrusion 112 is wedge-shaped and has a tip facing outward. Every two engaging protrusions 112 form a group. A group of engaging protrusions 112 is arranged between two adjacent clearance notches 1112. The length direction of the two engaging protrusions 112 in a group is inclined relative to the radial direction of the flat plate portion 111, so that the two opposite outer side surfaces 1121 of the two engaging protrusions 112 can respectively abut against the two side walls 21411 of a fixing groove 2141, thereby fixing the base plate 11 in the outer sleeve 210. In addition, the edge of the flat plate portion 111 between the two engaging protrusions 112 in a group is straight, and the portion where the edge and the engaging protrusion 112 meet has a rounded corner.

[0058] A plurality of fixing protrusions 113 are respectively formed on the edge of the flat plate portion 111, each fixing protrusion 113 is in the shape of a strip block with a certain curvature, and a through fixing member installation hole 1131 is opened on the fixing protrusion 113. The axial direction of the fixing member installation hole 1131 is consistent with the radial direction of the flat plate portion 111. In this embodiment, the fixing protrusion 113 is formed integrally with one of the interlocking protrusions 112 in a group.

[0059] The edge of the flat plate portion 111 is also distributed with a plurality of through first bracket mounting holes 1113, a plurality of through second bracket mounting holes 1114, and a plurality of through positioning member mounting holes 1115, wherein the aperture of the positioning member mounting hole 1115 is relatively large. Among them, the plurality of first bracket mounting holes 1113 are respectively arranged on one side of the width direction of each clearance notch 1112, and are evenly distributed along a circumference. The second bracket mounting hole 1114 is arranged between a group of two interlocking protrusions 112, and the plurality of second bracket mounting holes 1114 are evenly distributed along a circumference. The positioning member mounting hole 1115 is arranged next to the fixing protrusion 113, and is staggered with the fixing member mounting hole 1131 in the radial direction of the flat plate portion 111, and the plurality of positioning member mounting holes 1115 are evenly distributed along a circumference.

[0060] In this embodiment, the base plate 11 is integrally formed of hard plastic, the maximum diameter of the base plate 11 is 260 mm, and the thickness of the flat plate portion 111 is 8 mm. The aperture of the first support tube mounting hole 1111 in the middle of the base plate 11 is 56 mm. There are three clearance notches 1112 on the base plate 11, and there are three first bracket mounting holes 1113, second bracket mounting holes 1114, and positioning member mounting holes 1115, respectively, which are arranged in a 120° circle and are all bolt holes. The aperture of the first bracket mounting hole 1113 and the second bracket mounting hole 1114 is 6 mm, and the aperture of the positioning member mounting hole 1115 is 8 to 10 mm.

[0061] The fixing assembly includes a plurality of fixing members, which are respectively arranged in each fixing member installation hole 1131. The installation position of the fixing member in the fixing member installation hole 1131 is adjustable, and is adjusted until the outer end of each fixing member is respectively pressed against the inner wall of the second cylinder 212, thereby further fixing the base plate 11 in the outer sleeve 210. In this embodiment, the fixing member is a fastening bolt, which is 30 mm in length and has a diameter that matches the fixing member installation hole 1131.

[0062] The positioning assembly 13 includes a plurality of positioning members 131, which are respectively arranged in each positioning member mounting hole 1115. The mounting position of the positioning member 131 in the positioning member mounting hole 1115 is adjustable, and the size specifications of the plurality of positioning members 131 are the same. When installing the base plate 11, the plurality of positioning members 131 can be used to keep the surface direction of the base plate 11 perpendicular to the axial direction of the outer sleeve 210, that is, by making the lower ends of the plurality of positioning members 131 contact with the upper end surface of the elastic unit 220, the surface direction of the base plate 11 is maintained, and the base plate 11 can be further leveled by adjusting one or more positioning members 131. In this embodiment, the positioning member 131 is a support bolt, the length of which is 80 mm, and the diameter is adapted to the positioning member mounting hole 1115.

[0063] Fig.10 4 is a three-dimensional diagram of the first sensor bracket in this embodiment.

[0064] like Fig.10 As shown, the first sensor bracket 121 is L-shaped as a whole, and has a first fixing plate portion 1211 and a first mounting plate portion 1212 that are perpendicular to each other. The first fixing plate portion 1211 is shorter in length, is a trapezoidal plate with rounded corners, and has a bracket fixing hole 12111. The first mounting plate portion 1212 is a rectangular plate, and has four sensor mounting holes 12121 at its outer end, and the four sensor mounting holes 12121 are arranged at the four vertices of a rectangle.

[0065] One end of the first sensor bracket 121 (i.e., the first fixed plate portion 1211) is mounted at the first bracket mounting hole 1113 on the base plate 11 through corresponding fasteners, and is mounted on the upper surface of the base plate 11, and the length direction of the second bracket plate portion 1212 is perpendicular to the surface direction of the flat plate portion 111, and the surface direction of the second bracket plate portion 1212 is perpendicular to the circumferential direction of the flat plate portion 111. The other end of the first sensor bracket 121 (i.e., the end with four sensor mounting holes) is the first mounting end, which is used to mount the first distance measuring sensor 21. The distance from the first sensor bracket 121 to the center of the base plate 11 is less than the radius of the upper end surface of the elastic unit 220.

[0066] The first distance measuring sensor 21 is in the shape of a rectangular block with missing corners, and mounting holes are respectively provided on two diagonal portions thereof, so that it can be fixed on two diagonal sensor mounting holes 12121 by two corresponding fasteners. The first distance measuring sensor 21 is installed on one side of the second bracket plate portion 1212, and is located on both sides of the second mounting plate portion 1212 with the first fixing plate portion 1211, and is located above a clearance notch 1112. The first distance measuring sensor 21 is a laser distance measuring sensor, and its detection end faces downward. The emission direction of the laser emitted from the detection end is consistent with the axial direction of the outer sleeve 210. The laser is projected onto the upper end surface 221a of the elastic unit 220 below (on the support sheet portion 2211) through the clearance notch 1112, so that the relative distance between the outer sleeve 210 and the elastic unit 220 can be detected.

[0067] The structure of the second sensor bracket 122 is substantially the same as that of the first sensor bracket 121 , and includes a second fixing plate portion 1221 and a second mounting plate portion 1222 that are perpendicular to each other.

[0068] One end of the second sensor bracket 122 is fixed to the second bracket mounting hole 1114 of the base plate 11, and is mounted on the lower surface of the base plate 11. The length direction of the second mounting plate portion 1222 is perpendicular to the surface direction of the flat plate portion 111, the surface direction of the second mounting plate portion 1222 is substantially perpendicular to the radial direction of the base plate 11, and the distance from the second mounting plate portion 1222 to the center of the base plate 11 is substantially equal to or slightly less than the radius of the upper end surface 221a.

[0069] The structure of the second distance measuring sensor 22 is the same as that of the first distance measuring sensor 21. The second distance measuring sensor 22 is mounted on the outer end of the second sensor bracket 122 and is located between the second mounting plate portion 1222 and the inner wall of the outer sleeve 210. The second distance measuring sensor 22 is also a laser distance measuring sensor, with its detection end facing downward, and the emission direction of the laser is also consistent with the axial direction of the outer sleeve 210. The laser is projected onto the lower foundation below through the gap 216, so that the relative distance between the outer sleeve 210 and the lower foundation can be detected. Since the track bed plate is fixed to the outer sleeve 210, the relative distance between the track bed plate and the lower foundation can also be detected.

[0070] Furthermore, based on the structure of the elastic unit 220, the first distance measuring sensor 21 and the second distance measuring sensor 22 are staggered in the axial direction (vertical direction) of the outer sleeve 210. The first distance measuring sensor 21 is located above the support end 2222 of the elastic unit 220, and the second distance measuring sensor 22 is located between two adjacent support ends 2222. In this way, the multiple second distance measuring sensors 22 below will not block the laser emitted by the first distance measuring sensor 21. Even when there are a large number of sensors, such a design idea can prevent the sensors below from blocking the sensors above.

[0071] In this embodiment, there are three first sensor brackets 121 and three second sensor brackets 122, and they are all the same components. There are also three first distance measuring sensors 21 and three second distance measuring sensors 22, and they are all the same components.

[0072] The support member 14 is in a circular cylindrical shape, and has external threads at both ends thereof.

[0073] The support plate 15 is in the shape of a circular plate, and has a second support tube mounting hole 151 in the middle thereof, and the second support tube mounting hole 151 has an internal thread. The support plate 15 is used to support components such as a data acquisition instrument.

[0074] The dimensions of the two ends of the support member 14 match the first support tube mounting hole 1111 and the second support tube mounting hole 151 respectively, so that one end of the support member 14 can be installed in the middle of the flat plate portion 111, and the other end can be installed in the middle of the support plate 15, thereby installing the support plate 15 above the flat plate portion 111 and making the support plate 15 parallel to the flat plate portion 111.

[0075] The length of the middle section of the support member 14 except the two ends with threads is greater than the length of the first mounting plate portion 1212 of the first sensor bracket 121 , so that the first sensor bracket 121 can be installed between the base plate 11 and the support plate 15 without being affected.

[0076] In this embodiment, the support member 14 and the support plate 15 are also made of hard plastic.

[0077] The support member 14 has a height of 77 mm, an inner diameter of 51 mm, an outer diameter of 59 mm, and a threaded protrusion with a length of 5 mm at each end.

[0078] The support plate 15 has a diameter of 225 mm and a thickness of 4 mm, and the diameter of the second support tube mounting hole 151 in the middle is 56 mm.

[0079] The overall height of the detection device 100 is less than half of the distance between the upper cover plate 240 and the upper end surface 221a of the elastic unit 220. Therefore, after the detection device 100 is installed in the outer sleeve 210, there is still sufficient space between the upper cover plate 240 and the detection device 100 to install other components such as a data acquisition instrument. After the upper cover plate 240 is installed, the overall external structure and appearance of the track bed plate are the same as when the detection device 100 is not installed.

[0080] Functions and Effects of the Embodiments

[0081] According to the sensor fixing device for detecting the rail vibration isolator provided in this embodiment, it includes a base plate, a first sensor bracket and a second sensor bracket arranged on the base plate. Since the base plate is fixed in the outer sleeve of the vibration isolator, and the first sensor bracket can make the first distance measuring sensor located above the upper end surface of the elastic unit, the first distance measuring sensor can detect the relative distance between the outer sleeve and the elastic unit; similarly, since the second sensor bracket can make the second distance measuring sensor located at a position corresponding to the gap between the outer sleeve and the elastic unit in the axial direction of the outer sleeve, the second distance measuring sensor can use the gap to detect the relative distance between the outer sleeve and the lower foundation below. As described above, through the fixing device, the first and second distance measuring sensors can be installed at an ideal predetermined position, so that more distance measuring data can be obtained, so as to better detect the installation condition and working condition of the vibration isolator.

[0082] In the embodiment, the first and second sensor brackets are both L-shaped brackets, and the outer ends have four sensor mounting holes, so that the distance measuring sensor with diagonal holes can be easily installed, so that the detection end is oriented and the laser emitted by the detection end is not blocked. In addition, in the embodiment, the first and second sensors use the same components, and the first and second distance measuring sensors also use the same components, which can relatively reduce the equipment cost and make installation and debugging more convenient.

[0083] Furthermore, a clearance notch is provided on the edge of the base plate and beside the first sensor bracket, so that the laser emitted by the first distance measuring sensor can be projected onto the upper surface of the elastic unit below without obstruction.

[0084] Furthermore, a second ranging sensor is installed between the outer end of the second sensor bracket and the outer sleeve, and the gap between two adjacent supporting ends of the elastic unit and the gap between the outer periphery of the elastic unit and the outer sleeve are used to detect the lower foundation below, so that the laser emitted by the second ranging sensor can be projected onto the lower foundation without obstruction.

[0085] Furthermore, through the installation positions of multiple sensor brackets, multiple first ranging sensors and multiple second ranging sensors are staggered in the surface direction perpendicular to the axial direction of the outer sleeve. Therefore, the multiple second ranging sensors below will not block the lasers emitted by the first ranging sensors above. Even when the number of sensors is further increased, it can be ensured that the sensors above are not affected.

[0086] Furthermore, the edge of the base plate has a plurality of fixing holes horizontally arranged along the radial direction thereof, so that the base plate can be tightened in the outer sleeve by means of a plurality of fixings (fastening bolts). In addition, the edge of the base plate has a plurality of sets of engaging protrusions, which can respectively engage with the mounting grooves inside the outer sleeve, thereby further firmly fixing the base plate in the outer sleeve and preventing the base plate from rotating relative to the outer sleeve.

[0087] Furthermore, the edge of the base plate also has a plurality of vertically arranged positioning member mounting holes, so the base plate can be leveled by the plurality of positioning members to keep it perpendicular to the axial direction of the outer sleeve. When installing the detection device in the outer sleeve, before fixing the base plate by tightening the screws, the plurality of positioning members can also be used to support the base plate in the outer sleeve and maintain its surface direction, without having to manually hold the base plate, thereby making the installation and positioning of the base plate more convenient and quick, and its positioning in the outer sleeve is also more accurate, which is conducive to improving the detection accuracy.

[0088] Furthermore, since there are support members and support plates, the support plates and the space above the support plates in the outer sleeve can be used to install other components such as data acquisition instruments, and the size design of the support members and support plates ensures that they will not affect the installation and operation of the sensor.

[0089] The above embodiments are only used to illustrate the specific implementation of the utility model, and the utility model is not limited to the description scope of the above embodiments. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

[0090] For example, in the above embodiment, based on the structure of the elastic unit, three clearance gaps, three first bracket mounting holes, and three second bracket mounting holes are provided on the base plate, which are evenly distributed along the circumference of the edge of the base plate (i.e., arranged at 120°). In alternative schemes, the position and quantity of the above structures can also be adjusted accordingly according to the structure of different elastic units.

[0091] In the above embodiment, the first sensor bracket and the second sensor bracket are the same component, and the first ranging sensor and the second ranging sensor are the same component. In an alternative solution, different components may be used according to actual detection needs. For example, the overall length of the second sensor bracket is longer than the overall length of the first sensor bracket, the model of the second ranging sensor is different from the model of the first ranging sensor, and the ranging accuracy is higher.

[0092] In the above embodiment, the first sensor bracket and the second sensor bracket are both L-shaped plates. In alternative solutions, they may also adopt other shapes as long as they do not block the distance measuring sensor installed thereon in the vertical direction.

[0093] In the above embodiment, the base plate, the support member and the support plate are all made of hard plastic. In an alternative solution, they may also be made of other feasible materials, such as metal materials.

[0094] In the above embodiment, the support member is cylindrical and the support plate is a circular flat plate. In an alternative solution, other shapes may be used as long as the installation of the first sensor bracket is not affected and the upper surface of the support plate is roughly flat.

[0095] In the above embodiment, the detection device is used in a vibration isolator structure in which rubber springs are arranged in the upper and lower shells. In an alternative solution, the detection device can also be used in other vibration isolators of similar structures, such as vibration isolators in which rubber springs are directly placed outside.

Claims

1. A sensor fixing device for detecting a rail vibration isolator, used for fixing one or more first distance measuring sensors and one or more second distance measuring sensors in a vibration isolator, wherein the vibration isolator has an outer sleeve and an elastic unit arranged at the lower part of the outer sleeve, wherein the elastic unit has an annular upper end surface, and a gap is formed between the outer periphery of the elastic unit and the outer sleeve, characterized in that: include: A base plate, fixed in the outer sleeve and located above the elastic unit; One or more first sensor brackets, arranged on the base plate, for mounting the first distance measuring sensor and making it located above the upper end surface; as well as One or more second sensor brackets are arranged on the base plate and are used to install the second distance measuring sensor and locate it at a position corresponding to the gap in the axial direction of the outer sleeve.

2. The sensor fixing device for detecting rail vibration isolators according to claim 1 is characterized in that: in, The first sensor bracket is an L-shaped bracket, one end of which is fixed to the edge of the base plate, and the other end is a first mounting end, the first mounting end is located above the base plate and is used to mount the first distance measuring sensor. The edge of the base plate has one or more clearance notches, which are located next to the corresponding first sensor bracket, and are used to allow the first distance measuring sensor installed on the first sensor bracket to measure the distance of the upper end surface below through the clearance notches.

3. The sensor fixing device for detecting rail vibration isolators according to claim 2, characterized in that: in, There are multiple first sensor brackets, which are respectively arranged on the edge of the base plate and evenly distributed along a circumference. The positions of the plurality of first mounting ends in the axial direction of the outer sleeve are the same.

4. The sensor fixing device for detecting rail vibration isolators according to claim 3 is characterized in that: in, The second sensor bracket is an L-shaped bracket, one end of which is fixed to the edge of the base plate, and the other end is a second mounting end, the second mounting end is located below the base plate and is used to mount the second distance measuring sensor. The second mounting end is in the shape of a flat plate, and a surface direction thereof is perpendicular to the radial direction of the outer sleeve.

5. The sensor fixing device for detecting rail vibration isolators according to claim 4, characterized in that: in, There are multiple second sensor brackets, which are respectively arranged on the edge of the base plate and evenly distributed along a circumference. The positions of the plurality of second mounting ends in the axial direction of the outer sleeve are the same, The plurality of second mounting ends are staggered with the plurality of first mounting ends in the axial direction of the outer sleeve.

6. The sensor fixing device for detecting rail vibration isolators according to claim 1, characterized in that: Also includes: A fixing assembly, used to fix the base plate in the outer sleeve, The edge of the base plate has a plurality of fixing member installation holes, and the axial extension lines of the fixing member installation holes pass through the center of the base plate. The fixing assembly includes a plurality of fixing members, which are respectively arranged in the plurality of fixing member installation holes, and the outer ends of the fixing members are in contact with the inner wall of the outer sleeve.

7. The sensor fixing device for detecting rail vibration isolators according to claim 1, characterized in that: Also includes: a positioning assembly, used to position the relative position of the base plate with respect to the elastic unit when the base plate is installed, The edge of the base plate has a plurality of positioning member mounting holes, and the axial direction of the positioning member mounting holes is perpendicular to the surface direction of the base plate. The positioning assembly includes a plurality of positioning members, which are respectively arranged in the plurality of positioning member mounting holes, and the lower ends of the positioning members are in contact with the upper end surfaces of the elastic units during installation.

8. The sensor fixing device for detecting rail vibration isolators according to claim 1, characterized in that: in, The inner wall of the outer sleeve has a plurality of mounting grooves. The plurality of mounting grooves are located at the same position in the axial direction of the outer sleeve. The edge of the base plate has a plurality of groups of engaging protrusions, which respectively match the plurality of mounting grooves and are used for engaging with the corresponding mounting grooves.

9. The sensor fixing device for detecting rail vibration isolators according to claim 8, characterized in that: in, The installation groove is a trapezoidal groove having two relatively inclined side walls. Each group of the embedding protrusions includes two embedding protrusions, each of the embedding protrusions is wedge-shaped, and the distance between the two embedding protrusions matches the width of the corresponding installation groove. The opposite outer sides of the two engaging protrusions in each group are respectively in contact with the two side walls.

10. The sensor fixing device for detecting rail vibration isolators according to claim 1, characterized in that: Also includes: A support member is disposed at the middle of the upper surface of the base plate; and A support plate is arranged at the upper end of the support member, Wherein, the first sensor bracket is mounted on the upper surface of the base plate, The distance between the support plate and the base plate is greater than the height of the first sensor bracket.

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