Rail pad type bearing device

Abstract

The utility model relates to the technical field of railway wagon bearing, and provides a rail pad type bearing device which is installed below a steel rail, the steel rail extends in the second direction, and the rail pad type bearing device comprises a sensor body, a baffle seat and an elastic strip. Wherein the sensor body comprises a first supporting part, a strain part and second supporting parts, the second supporting parts are located on the two opposite sides of the first supporting part in the first direction and connected with the first supporting part through the strain part, the strain part is provided with a strain gauge, and the first supporting part is used for supporting a steel rail; the two baffle seats are arranged at intervals in the first direction, the steel rail is clamped between the two baffle seats, and at least one of the two baffle seats is detachably connected with the first supporting part; the elastic strip enables the sensor main body to always have a trend of being close to the steel rail in the vertical direction; the first direction and the second direction are perpendicular to the vertical direction in pairs. The steel rail and the sensor main body can be ensured to be tightly fixed, the operation of lifting the steel rail is avoided, and the assembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of railway freight car load-bearing, in particular to a rail pad type load-bearing device. Background Art

[0002] In modern industrial metrology, track scales are used to weigh railway freight cars, and overload and eccentric load detection devices are used to safely detect overload and eccentric loads on railway freight cars. With the development of weighing technology, a track scale and overload detection device product has emerged that uses rails as the load-bearing structure and installs rail pad sensors directly under the rails. At present, in order to control and clamp the rails, the common rail pad sensors are provided with a rail groove with a rail bottom slope and a spring clip fastener retaining groove on the upper surface of the sensor. When replacement is required, it is necessary to remove the rail fixing bolts of at least 4-5 adjacent groups of sensors or sleepers on both sides of the replacement sensor, and use a track lifter to lift the rail out of the rail groove before it can be removed and replaced. The replacement of each sensor requires a long operation time. Due to the busy production of railway lines, there are few opportunities to stop operations for maintenance or replacement and renovation. Generally, only 2-3 hours of maintenance window can be scheduled per day, which to a certain extent affects the maintenance of the product.

[0003] Therefore, a rail pad type load-bearing device is urgently needed to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a rail pad type load-bearing device, which can simplify the assembly process with the rail.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A rail pad type load-bearing device is installed under the rail, and the rail extends along the second direction, comprising:

[0007] A sensor body, the sensor body comprising a first support portion, a strain portion, and a second support portion, the second support portion being located on opposite sides of the first support portion in a first direction and connected to the first support portion via the strain portion, the strain portion being equipped with a strain gauge, and the first support portion being used to support the rail;

[0008] baffle seats, wherein two baffle seats are provided and spaced apart in the first direction, the rail is clamped between the two baffle seats, and at least one of the two baffle seats is detachably connected to the first support portion;

[0009] An elastic bar, wherein the elastic bar causes the sensor body to always have a tendency to be close to the rail in a vertical direction;

[0010] The first direction and the second direction are perpendicular to the vertical direction in pairs.

[0011] As a preferred technical solution of the above-mentioned rail pad type load-bearing device, the above-mentioned baffle seat is slidably connected to the above-mentioned first support part.

[0012] As a preferred technical solution of the above-mentioned rail pad type load-bearing device, the above-mentioned baffle seat and the above-mentioned first support part are locked by threaded fasteners.

[0013] As a preferred technical solution for the above-mentioned rail pad type load-bearing device, the above-mentioned baffle seat is provided with a mounting groove, the length direction of the above-mentioned mounting groove is parallel to the above-mentioned first direction, one active end of the above-mentioned elastic bar is inserted into the above-mentioned mounting groove, and the above-mentioned steel rail is clamped between the other active end of the above-mentioned elastic bar and the above-mentioned first support part in the above-mentioned vertical direction.

[0014] As a preferred technical solution of the above-mentioned rail pad type load-bearing device, the above-mentioned elastic bar and the above-mentioned baffle seat are fixed by threaded fasteners.

[0015] As a preferred technical solution of the above-mentioned rail pad type load-bearing device, the above-mentioned strain parts are each provided with two blind holes arranged opposite to each other along the above-mentioned second direction, and at least one of the above-mentioned strain gauges is pasted in each of the above-mentioned blind holes.

[0016] As a preferred technical solution of the above-mentioned rail pad type load-bearing device, the above-mentioned blind hole is sealed by glue injection, and an end cover is provided at the opening of the above-mentioned blind hole.

[0017] As an optimal technical solution for the above-mentioned rail pad type load-bearing device, the above-mentioned first support part is provided with a rail sinking groove, the length direction of the above-mentioned rail sinking groove is parallel to the above-mentioned second direction, and the bottom surface of the above-mentioned rail is mounted on the end surfaces on both sides of the opening of the above-mentioned rail sinking groove at both ends of the above-mentioned first direction.

[0018] As a preferred technical solution of the above-mentioned rail pad type load-bearing device, the bottom wall of the above-mentioned rail groove is provided with a slope of 1:40, and a spherical groove is provided at the center position of the above-mentioned first support part.

[0019] As a preferred technical solution of the above-mentioned rail pad type load-bearing device, the above-mentioned second supporting portion is provided with a waist-shaped hole, and the long axis direction of the above-mentioned waist-shaped hole is parallel to the above-mentioned first direction.

[0020] Beneficial effects of the utility model:

[0021] The utility model provides a rail pad-type load-bearing device, which is installed below a steel rail, with the steel rail extending along a second direction, and includes a sensor body, a baffle seat, and an elastic bar. The sensor body includes a first support portion, a strain portion, and a second support portion. The second support portion is located on opposite sides of the first support portion in the first direction and is connected to the first support portion via the strain portion. The strain portion is equipped with a strain gauge. The first support portion is used to support the steel rail. Two baffle seats are provided, spaced apart in the first direction. The steel rail is clamped between the two baffle seats. At least one of the two baffle seats is detachably connected to the first support portion. The elastic bar ensures that the sensor body always has a tendency to approach the steel rail in the vertical direction. The first direction and the second direction are perpendicular to the vertical direction.

[0022] Specifically, the sensor body includes a first support portion located in the middle, which is used to support the rail; second support portions located on either side of the first support portion in a first direction, which are used to be fixed to a support surface, which is generally a sleeper or a steel frame structure; a strain portion connecting the first and second support portions, wherein a strain gauge is affixed to a blind hole in the strain portion. When a load passes over the rail, the first support portion is subjected to increased force, tending to move relative to the second support portion, generating stress in the strain portion, causing the resistance of the strain gauge to change. By obtaining the resistance change value, the gravity of the load on the rail can be inferred. Two baffle seats are provided, at least one of which is detachably connected to the sensor body. The two baffle seats and the first support portion of the sensor body enclose a deep groove in the rail, which is used to limit the relative movement of the rail and the sensor body. During assembly, first place the sensor body under the rail, and make the first support part directly under the rail, and the second support part is fixed to the support surface. On both sides of the first direction of the rail, install two baffle seats on the first support part to form a deep groove for the sunken rail, and the rail is located in the deep groove for the sunken rail. Then, install the elastic bars to make the sensor body and the baffle seat close to the rail.

[0023] In this way, the baffle seat and the first support portion are detachably connected and assembled around the rail, which can ensure that the rail and the sensor body are tightly fixed while avoiding the operation of lifting the rail, thereby facilitating assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the assembly of the rail pad type load-bearing device and the rail provided in an embodiment of the utility model;

[0026] Figure 2 This is a schematic structural diagram of the sensor body provided by an embodiment of the present utility model;

[0027] Figure 3 It is a structural schematic diagram of the baffle seat provided by an embodiment of the utility model.

[0028] In the picture:

[0029] X, first direction; Y, second direction; Z, vertical direction;

[0030] 1. Rail pad type load-bearing device; 2. Steel rail;

[0031] 100, sensor body; 110, first support portion; 111, avoidance groove; 112, spherical groove; 113, slide groove; 114, first connection hole; 120, strain portion; 121, end cap; 130, second support portion; 131, waist-shaped hole;

[0032] 200, baffle seat; 210, sinking rail groove; 220, second connecting hole;

[0033] 300, spring bar; 400, threaded fastener; 500, insulating strip; 600, insulating pad. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0035] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0038] like Figures 1 to 3 As shown, the present invention provides a rail pad-type load-bearing device 1, which is installed below a rail 2, which extends along a second direction Y. The device includes a sensor body 100, a baffle seat 200, and a spring bar 300. The sensor body 100 includes a first support portion 110, a strain portion 120, and a second support portion 130. The second support portion 130 is located on opposite sides of the first support portion 110 in the first direction X and is connected to the first support portion 110 via the strain portion 120. The strain portion 120 is equipped with a strain gauge. The first support portion 110 is used to support the rail 2. Two baffle seats 200 are provided, spaced apart in the first direction X. The rail 2 is sandwiched between the two baffle seats 200. At least one of the two baffle seats 200 is detachably connected to the first support portion 110. The spring bar 300 ensures that the sensor body 100 always has a tendency to approach the rail 2 along the vertical direction Z. The first direction X and the second direction Y are perpendicular to the vertical direction Z.

[0039] Specifically, the sensor body 100 includes a first support portion 110 located in the middle, the first support portion 110 is used to support the rail 2, and a second support portion 130 located on both sides of the first support portion 110 in the first direction X. The second support portion 130 is used to be fixed to a support surface, and the support surface is generally a sleeper or a frame structure steel frame. The strain portion 120 connects the first support portion 110 and the second support portion 130, and a strain gauge is pasted in the blind hole of the strain portion 120. When a load passes through the rail 2, the force on the first support portion 110 increases, and it has a tendency to move relative to the second support portion 130. The strain portion 120 generates stress, and the resistance of the strain gauge changes. By obtaining the resistance change value, the gravity of the load on the rail 2 at this time can be inferred.

[0040] Furthermore, when a load passes over the rail 2, the rail 2 will vibrate, causing the rail 2 and the sensor body 100 to be unable to always maintain close contact, thereby causing inaccurate gravity information of the load. To this end, the existing sensor body 100 is provided with a rail-sinking deep groove along the second direction Y, and the rail 2 is inserted into the rail-sinking deep groove. The rail 2 is parallel to the second direction Y. The two side walls of the rail-sinking deep groove in the first direction X can limit the relative shaking of the rail 2 and the sensor body 100 in the first direction X. Then, the spring bar 300 is used to abut the rail 2 at the opening of the rail-sinking deep groove, so that the rail 2 is clamped between the spring bar 300 and the bottom wall of the rail-sinking deep groove in the vertical direction Z, limiting the relative shaking of the rail 2 and the sensor body 100 in the vertical direction Z, thereby achieving that the sensor body 100 and the rail 2 can always maintain a close contact state.

[0041] However, when the existing sensor body 100 is assembled with the rail 2, the rail 2 needs to be lifted to a certain height before the sensor body 100 can be placed under the rail 2 and the rail 2 can fall into the deep groove of the rail, which makes assembly extremely inconvenient.

[0042] To this end, this embodiment further provides a baffle seat 200. The baffle seat 200 is provided with two pieces, at least one of which is detachably connected to the sensor body 100. The two baffle seats 200 and the first support portion 110 of the sensor body 100 enclose the aforementioned deep rail groove, which is used to limit the relative movement of the rail 2 and the sensor body 100. During assembly, the sensor body 100 is first placed under the rail 2, with the first support portion 110 located directly below the rail 2, and the second support portion 130 fixed to the supporting surface. On both sides of the rail 2 in the first direction X, the two baffle seats 200 are installed on the first support portion 110 to form a deep rail groove with the rail 2 located within the groove. Then, the elastic bars 300 are installed to ensure that the sensor body 100 and the baffle seat 200 are in close contact with the rail 2.

[0043] In this way, the baffle seat 200 and the first support portion 110 are detachably connected and assembled around the rail 2, which can ensure that the rail 2 and the sensor body 100 remain tightly fixed while avoiding the operation of lifting the rail 2.

[0044] Furthermore, the first support portion 110 and the baffle seat 200 of the sensor are both insulating parts, or the contact surfaces with the rail 2 are both provided with an insulating layer to prevent electrical connection between the sensor body 100 and the rail 2 .

[0045] In this embodiment, the rail pad type load-bearing device 1 further includes an insulating strip 500 and an insulating pad 600 . The insulating strip 500 is clamped between the baffle seat 200 and the rail 2 , and the insulating pad 600 is clamped between the rail 2 and the first support portion 110 .

[0046] Optionally, the baffle seat 200 is slidably connected to the first support portion 110 .

[0047] In this embodiment, the baffle seat 200 slides relative to the first support portion 110 along the first direction X. Specifically, the first support portion 110 defines a slide groove 113 along the first direction X, and the baffle seat 200 can be inserted into the slide groove 113 and reciprocate relative to the first support portion 110 within the slide groove 113 along the first direction X. Alternatively, the baffle seat 200 defines a slide groove 113 along the first direction X, and the first support portion 110 can be inserted into the slide groove 113 and can slide relative to the first support portion 110. Alternatively, the first support portion 110 is provided with a first slide groove and a first slider, and the baffle seat 200 is provided with a second slide groove and a second slider, the first slide groove being parallel to the second slide groove, the first slider being slidably inserted into the second slide groove, and the second slider being slidably inserted into the first slide groove.

[0048] Furthermore, the chute 113 is formed on opposite side end surfaces of the first support portion 110 in the second direction Y. The depth direction of the chute 113 intersects the vertical direction Z. Sliders are provided on both sides of the baffle seat 200 in the second direction Y. The slides can be inserted into the chute 113 and slide relative to the first support portion 110 in the first direction X. The slides can abut against the sidewalls of the chute 113 to prevent the baffle seat 200 from separating from the first support portion 110 in the vertical direction Z. Preferably, the depth direction of the chute 113 is parallel to the second direction Y.

[0049] In other embodiments, the baffle seat 200 slides along the second direction Y relative to the first support portion 110. For example, the first support portion 110 is provided with a sliding groove 113 along the second direction Y, and the baffle seat 200 is inserted into the sliding groove 113 and can slide in the second direction Y relative to the first support portion 110.

[0050] Optionally, the baffle seat 200 and the first support portion 110 are locked by a threaded fastener 400 .

[0051] Specifically, the first support portion 110 defines a first connection hole 114, which is a threaded hole. The baffle seat 200 defines a second connection hole 220. The threaded fastener 400 passes through the second connection hole 220 and is threadedly connected to the first connection hole 114. The baffle seat 200 is sandwiched between the nut of the threaded fastener 400 and the first support portion 110. In this way, the threaded fastener 400 is simultaneously inserted into the baffle seat 200 and the first support portion 110 to limit the relative movement of the baffle seat 200 and the first support seat within a plane determined by the radial direction of the threaded fastener 400. The threaded connection between the threaded fastener 400 and the first support portion 110 limits the movement between the baffle seat 200 and the first support portion 110 along the axial direction of the threaded fastener 400.

[0052] Optionally, the baffle seat 200 defines a mounting slot 210, the length of which is parallel to the first direction X. One active end of the spring bar 300 is inserted into the mounting slot 210, and the rail 2 is clamped between the other active end of the spring bar 300 and the first support portion 110 in the vertical direction Z. In this way, the sidewall of the mounting slot 210 away from the rail 2 can abut against the active end of the spring bar 300, allowing the spring bar 300 to maintain its arched shape. The other end of the spring bar 300 can abut against the rail 2, thereby bringing the sensor body 100 into close contact with the rail 2.

[0053] Optionally, the spring bar 300 and the baffle seat 200 are secured via threaded fasteners 400. The threaded fasteners 400 can maintain a fixed position relative to the spring bar 300, the rail 2, and the baffle seat 200. Furthermore, the threaded fasteners 400 used to connect the spring bar 300 to the baffle seat 200 and the threaded fasteners 400 used to connect the baffle seat 200 to the sensor body 100 can be the same threaded fasteners 400. The specific connection method is well known in the art and will not be described in detail here.

[0054] Optionally, each strain gauge portion 120 defines two blind holes disposed opposite each other along the second direction Y, with at least one strain gauge affixed to each blind hole. Specifically, a strain gauge is a component composed of a sensitive grid and other components for measuring strain. The strain gauge is installed in the strain gauge portion 120 of the sensor body 100. When the strain gauge portion 120 is subjected to force, strain occurs at the measuring point, and the sensitive grid also deforms, causing its resistance to change. The resistance change is then measured by a dedicated instrument and converted into a strain value at the measuring point.

[0055] Optionally, the blind hole is sealed by glue injection, and an end cover 121 is provided at the opening of the blind hole.

[0056] Due to the slope of the bottom of the rail 2 , the rail 2 and the sensor body 100 may not be able to maintain a close fit.

[0057] Optionally, the first support portion 110 is provided with a rail-sinking groove 111, the length direction of which is parallel to the second direction Y. The lower end surface of the rail 2 is mounted on the end surfaces on both sides of the opening of the rail-sinking groove 111 at both ends in the first direction X. In this way, by providing the rail-sinking groove 111, the rail 2 is clamped on the end surfaces on both sides of the opening of the rail-sinking groove 111 at both ends in the first direction X, so that the bottom slope of the rail 2 is located in the rail-sinking groove 111, thereby maintaining the stable placement of the rail 2 and the sensor.

[0058] Furthermore, a flexible insulating pad is laid in the rail groove 111 to prevent the rail 2 from being electrically connected to the sensor body 100. Moreover, the flexible insulating pad can fill the gap between the inner wall of the rail groove 111 and the rail 2, so that the rail 2 and the first support part 110 are stably placed.

[0059] Optionally, the bottom wall of the rail sinking groove 111 is provided with a slope of 1:40, and a spherical groove 112 is provided at the center position of the first support portion 110 .

[0060] According to the requirements of the "Railway Technical Management Regulations", the bottom wall of the rail groove 111 is designed to have a slope of 1:40 to ensure that the rail 2 and the sensor body 100 are in close contact and meet the installation requirements of the railway line. Since the bottom wall of the rail groove 111 has a certain slope, the spherical detection probe of the sensor body 100 will always slide in the rail groove 111 during loading and testing during factory inspection. Therefore, it is necessary to install additional tooling to overcome the slope of the rail groove and ensure that the spherical detection probe does not slide. In this embodiment, by opening a spherical groove 112 and placing the spherical detection probe in the spherical groove 112, the spherical detection probe can be limited.

[0061] Optionally, the second supporting portion 130 defines a waist-shaped hole 131 , and the long axis direction of the waist-shaped hole 131 is parallel to the first direction X.

[0062] Specifically, the second support portion 130 is used to be fixed to the support surface, which is generally fixed to the ground. The support surface is provided with a third connecting hole, which is a threaded hole. The second support portion 130 is connected to the support surface through a threaded fastener. The threaded fastener passes through the waist-shaped hole 131 and is threadedly connected to the support surface through the third connecting hole. The second support portion 130 is clamped between the nut of the threaded fastener and the support surface. The threaded fastener can slide along the long axis direction of the waist-shaped hole 131 to adjust the relative position of the sensor body 100 and the rail 2 so that the first support portion 110 is located directly below the rail 2.

[0063] Furthermore, the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A rail pad type load-bearing device, installed below a rail (2), wherein the rail (2) extends along a second direction (Y), characterized in that: include: A sensor body (100), the sensor body (100) comprising a first support portion (110), a strain portion (120) and a second support portion (130), the second support portion (130) being located on opposite sides of the first support portion (110) in a first direction (X) and connected to the first support portion (110) via the strain portion (120), the strain portion (120) being equipped with a strain gauge, and the first support portion (110) being used to support the rail (2); baffle seats (200), two baffle seats (200) are provided and spaced apart in the first direction (X), the rail (2) is clamped between the two baffle seats (200), and at least one of the two baffle seats (200) is detachably connected to the first support portion (110); An elastic bar (300), wherein the elastic bar (300) causes the sensor body (100) to always have a tendency to be close to the rail (2) along a vertical direction (Z); The first direction (X), the second direction (Y) and the vertical direction (Z) are perpendicular to each other.

2. The rail pad type load-bearing device according to claim 1, characterized in that: The baffle seat (200) is slidably connected to the first supporting portion (110).

3. The rail pad type load-bearing device according to claim 2, characterized in that: The baffle seat (200) and the first support portion (110) are locked via a threaded fastener (400).

4. The rail pad type load-bearing device according to claim 1, characterized in that: The baffle seat (200) is provided with a mounting groove (210), the length direction of the mounting groove (210) is parallel to the first direction (X), one active end of the elastic bar (300) is inserted into the mounting groove (210), and the rail (2) is clamped between the other active end of the elastic bar (300) and the first support portion (110) in the vertical direction (Z).

5. The rail pad type load-bearing device according to claim 4, characterized in that: The elastic bar (300) and the baffle seat (200) are fixed via a threaded fastener (400).

6. The rail pad type load-bearing device according to claim 1, characterized in that: The strain portion (120) is provided with two blind holes disposed opposite to each other along the second direction (Y), and at least one strain gauge is pasted into each blind hole.

7. The rail pad type load-bearing device according to claim 6, characterized in that: The blind hole is sealed by glue injection, and an end cover (121) is provided at the opening of the blind hole.

8. The rail pad type load-bearing device according to claim 1, characterized in that: The first support portion (110) is provided with a rail sinking groove (111), the length direction of the rail sinking groove (111) is parallel to the second direction (Y), and the bottom surface of the rail (2) is mounted on the end surfaces on both sides of the opening of the rail sinking groove (111) at both ends of the first direction (X).

9. The rail pad type load-bearing device according to claim 8, characterized in that: The bottom wall of the rail sinking groove (111) is provided with a slope of 1:40, and a spherical groove (112) is provided at the center of the first supporting portion (110).

10. The rail pad type load-bearing device according to any one of claims 1 to 9, characterized in that: The second supporting portion (130) is provided with a waist-shaped hole (131), and the long axis direction of the waist-shaped hole (131) is parallel to the first direction (X).

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