Track suitable for vehicle bottom inspection robot

Abstract

The invention relates to the field of rail train underbody detection, in particular to a rail suitable for an underbody inspection robot. The guide rails are mounted on the sleepers and are sequentially connected end to end, and the adjacent guide rails are arranged end to end at certain intervals; a telescopic guide hole extending along the length direction of the guide rail is at least formed in the end part of the guide rail; and the telescopic guide pieces are inserted into the telescopic guide holes of the adjacent guide rails. The head and the tail of the adjacent guide rails are arranged at certain intervals, so that buckling deformation of the guide rails caused by thermal expansion and cold contraction is avoided, meanwhile, the telescopic guide pieces are inserted into the telescopic guide holes of the two adjacent guide rails to guide the telescopic direction of the guide rails during thermal expansion and cold contraction, and dislocation between the adjacent guide rails is avoided.

Description

Technical Field

[0001] The invention relates to the field of undercarriage inspection of rail trains, and in particular to a track suitable for undercarriage inspection robots. Background Art

[0002] During the entire life cycle of rail trains, they need to be regularly maintained and inspected. Train inspections and biweekly inspections are the most frequent inspections of trains, and they need to be completed quickly in a short period of time, especially the inspection of the undercarriage equipment.

[0003] For example, Chinese patent CN110231825A discloses a vehicle intelligent inspection system and method, in which a vehicle bottom track is arranged on the sleepers between two rails of the railway track, and a vehicle bottom robot is movably arranged on the vehicle bottom track to detect the bottom of the vehicle and obtain the vehicle bottom data.

[0004] The existing undercarriage tracks suitable for undercarriage robots usually do not take thermal expansion and contraction into consideration. Adjacent undercarriage tracks are directly butt-jointed and installed. However, due to thermal expansion and contraction, there is no gap between adjacent undercarriage tracks, which causes the undercarriage tracks to warp and become misaligned. This causes the path of the undercarriage robot to be bumpy and deviate when it runs on the undercarriage tracks, thus affecting the detection results. Summary of the invention

[0005] In view of this, the present invention provides a track suitable for use by an under-vehicle inspection robot, aiming to prevent the track from affecting the operating stability of the under-vehicle inspection robot due to thermal expansion and contraction.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A track suitable for use by an under-vehicle inspection robot comprises a guide rail and a telescopic guide member; a plurality of guide rails are mounted on a sleeper and connected end to end in sequence, and the ends of adjacent guide rails are spaced a certain distance apart; the guide rail is provided with a telescopic guide hole extending along the length direction of the guide rail at least at its end; the telescopic guide member is inserted into the telescopic guide hole of the adjacent guide rail.

[0008] In some optional embodiments, the end of the guide rail has a mounting interface.

[0009] In some optional embodiments, the assembly docking surface is in a broken line shape or a curved line shape.

[0010] In some optional embodiments, a blocking member is connected to the telescopic guide member, and a portion of the blocking member protrudes from the surface of the telescopic guide member, and the protruding portion cannot enter the telescopic guide hole.

[0011] In some optional embodiments, a notch is formed at a portion of at least one end of the guide rail corresponding to the blocking member.

[0012] In some optional embodiments, the guide rail is provided with a groove for accommodating the wire trough.

[0013] In some optional embodiments, a movable limiting mechanism is further included, which includes a limiting pressure block and a first fastener; the limiting pressure block is installed on the sleeper through the first fastener, and the limiting pressure block is crimped to one side of the guide rail and allows the guide rail to perform telescopic movement relative to the limiting pressure block.

[0014] In some optional embodiments, the edge of the side of the guide rail has a protrusion; and the limiting pressure block has a first groove matched with the protrusion.

[0015] In some optional embodiments, a fixed limiting mechanism is further included, which includes a positioning block and a second fastener; the positioning block is installed on the sleeper through the second fastener; one end of the positioning block has a positioning pin, the positioning block is crimped to one side of the guide rail, and the positioning pin is inserted into a positioning hole provided on one side of the guide rail.

[0016] In some optional embodiments, the edge of the side of the guide rail has a protrusion; and the positioning block has a second groove matched with the protrusion.

[0017] In summary, compared with the prior art, the present invention has the following advantages and beneficial effects: the present invention avoids warping and deformation of the guide rails due to thermal expansion and contraction by setting the ends of adjacent guide rails at a certain distance. At the same time, telescopic guide members are inserted into the telescopic guide holes of two adjacent guide rails to guide the telescopic direction of the guide rails during thermal expansion and contraction, thereby avoiding misalignment between adjacent guide rails.

[0018] At the same time, the telescopic guide piece is also conducive to the aligned installation of two adjacent guide rails. After one guide rail is installed in place, the telescopic guide piece is inserted into the telescopic guide hole of the guide rail, and then the telescopic guide hole of the other guide rail is aligned with the telescopic guide piece and pushed in, thereby achieving the aligned installation of the two adjacent guide rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention in use state.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the guide rail in the present invention.

[0021] Figure 3 It is a schematic diagram of the connection structure between two adjacent guide rails in the present invention.

[0022] Figure 4 It is a schematic diagram of the assembly relationship between the guide rail, the telescopic guide rod and the wire trough in the present invention.

[0023] Figure 5 It is a schematic diagram of the assembly relationship between the movable limiting mechanism and the guide rail in the present invention.

[0024] Figure 6 The schematic diagram of the assembly relationship between the movable limiting mechanism and the guide rail in the present invention is illustrated from the perspective of a cross-sectional view.

[0025] Figure 7 It is a schematic diagram of the assembly relationship between the fixed limiting mechanism and the guide rail in the present invention.

[0026] Figure 8 The schematic diagram of the assembly relationship between the fixed limiting mechanism and the guide rail in the present invention is illustrated from the perspective of a cross-sectional view.

[0027] The meanings of the numbers in the figure are: sleeper 1, rail 2, guide rail 3, telescopic guide hole 31, groove 32, protrusion 33, notch 34, movable limiting mechanism 4, limiting pressure block 41, first groove 42, first fastener 43, first shock-absorbing pad 44, fixed limiting mechanism 5, positioning pressure block 51, second groove 52, second fastener 53, second shock-absorbing pad 54, positioning pin 55, telescopic guide member 6, blocking member 61, wire groove 7. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there are any descriptions of "first", "second" and the like, they are only used for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] like Figure 1-Figure 4 As shown, a track suitable for use by an under-vehicle inspection robot described in an embodiment of the present application includes a guide rail 3 and a telescopic guide member 6.

[0033] Among them, a plurality of guide rails 3 are installed on the sleeper 1 and connected end to end in sequence, and the end to end of adjacent guide rails 3 are arranged at a certain distance. The length direction of the guide rail 3 generally needs to be arranged parallel to the length direction of the rail 2.

[0034] The guide rail 3 is provided with a telescopic guide hole 31 extending along the length direction of the guide rail 3 at least at its end. The telescopic guide hole 31 can also be set throughout the entire length direction of the guide rail 3, so that the guide rail 3 becomes a hollow structure. The guide rail 3 can be made of, for example, aluminum material through extrusion molding, with an overall light density and sufficient strength to support the underbody inspection robot walking on it.

[0035] The telescopic guide member 6 is inserted into the telescopic guide holes 31 of two adjacent guide rails 3. Each guide rail 3 is provided with at least one telescopic guide hole 31. If one guide rail 3 is provided with more than two telescopic guide holes 31, these telescopic guide holes 31 are arranged side by side along the length direction of the guide rail 3. At this time, a telescopic guide member 6 can be inserted into each telescopic guide hole 31. The telescopic guide member 6 can also be made of, for example, aluminum material through extrusion molding, and can even be made into a hollow tube. The cross-sectional shape of the telescopic guide member 6 is preferably consistent with the cross-sectional shape and size of the telescopic guide hole 31.

[0036] The cross-sectional shape of the guide rail 3 is generally an "I" shape, the top rail head is mainly used to support the walking of the vehicle bottom inspection robot, the bottom rail bottom is mainly used to connect with the sleeper 1, and the telescopic guide hole 31 is mainly installed in the middle rail waist part.

[0037] In the embodiment of the present application, adjacent guide rails 3 are spaced a certain distance apart from each other at their ends to avoid warping of the guide rails 3 due to thermal expansion and contraction. At the same time, telescopic guide members 6 are inserted into the telescopic guide holes 31 of two adjacent guide rails 3 to guide the telescopic direction of the guide rails 3 during thermal expansion and contraction to avoid misalignment between adjacent guide rails 3.

[0038] At the same time, the telescopic guide member 6 is also conducive to the aligned installation of two adjacent guide rails 3. After one guide rail 3 is installed in place, the telescopic guide member 6 is inserted into the telescopic guide hole 31 of the guide rail 3, and then the telescopic guide hole 31 of the other guide rail 3 is aligned with the telescopic guide member 6 and pushed in, so that the aligned installation of the two adjacent guide rails 3 can be achieved.

[0039] In addition, in the embodiment of the present application, the guide rail 3 is installed on the sleeper 1 between the two rails 2, preferably installed in the middle recess of the sleeper 1, so that the space on both sides of the guide rail 3 is larger and will not affect other engineering operations such as tamping construction.

[0040] Since two adjacent guide rails 3 are arranged at a certain distance from each other, that is, there is a certain gap between the two adjacent guide rails 3, in order to reduce the bumpy feeling of the undercar inspection robot when it travels on the guide rail 3 through the gap, Figure 3 and Figure 4 As shown, assembly docking surfaces may be designed at the ends of the guide rails 3 , and the shapes of these assembly docking surfaces may be broken line or curved.

[0041] Here, the assembly docking surface is taken as a broken line to further illustrate its technical effect: Figure 3 As shown, assuming that the left side of the end of the guide rail 3 has a depression, so that the right side of the end of the guide rail 3 has a protrusion, the depressions and protrusions at the ends of two adjacent guide rails 3 cooperate with each other, and the distance of the depression or protrusion is greater than the distance between the ends of the two adjacent guide rails 3. In this way, the assembly docking surface can make the gap between the ends of the two adjacent guide rails 3 discontinuous, so that a complete cross-sectional gap cannot be formed, and then the wheels of the undercarriage inspection robot will not be completely sunk into the gap when passing through the gap, but a part of the wheels are located on the surface of the guide rail 3, and the other part of the wheels will not be sunk into the gap because the other parts are supported on the surface of the guide rail 3, so that the undercarriage inspection robot is not prone to bumps when passing through the gap, and the driving is more stable and smooth.

[0042] In order to prevent the guide rail 3 from causing the telescopic guide member 6 to creep out of position due to thermal expansion and contraction, thereby losing its guiding function, Figure 3 and Figure 4 As shown, a blocking member 61 may be connected to the telescopic guide member 6, and a portion of the blocking member 61 protrudes from the surface of the telescopic guide member 6, and the protruding portion cannot enter the telescopic guide hole 31. The blocking member 61 may be a part such as a pin, a rivet or a screw, and the blocking member 61 may be connected to the middle position of the telescopic guide member 6 to prevent the telescopic guide member 6 from completely entering the telescopic guide hole 31 of one of the guide rails 3 during creeping.

[0043] In addition, although the ends of adjacent guide rails 3 are arranged at a certain distance, when heated, the guide rails 3 will extend, or the extension is too large, and may squeeze and collide with the blocking member 61, thereby causing the blocking member 61 to fall off. To avoid this situation, Figure 3 and Figure 4As shown, a notch 34 can be provided at a portion corresponding to the blocking member 61 at at least one end of the guide rail 3. In this way, even if the ends of adjacent guide rails 3 are elongated due to heat and abut against each other, the blocking member 61 can enter the notch 34 at the end of the guide rail 3, thereby avoiding being squeezed and dropped by the guide rail 3.

[0044] A groove 32 for accommodating the wire trough 7 is also provided on the guide rail 3. Figure 2 As shown, the groove 32 can be provided at the bottom of the guide rail 3 and extend along the length direction of the guide rail 3. Electrical circuits can be installed in the wire groove 7. Figure 6 or Figure 8 As shown, the cross-sectional shape of the wire trough 7 is generally U-shaped, and the two sides may be slightly inclined inward. Correspondingly, the cross-sectional shape of the groove 32 is generally rectangular or trapezoidal, so that the groove 32 fits tightly with the wire trough 7 to avoid a gap between the two, thereby preventing insects or other debris from entering. Placing the electrical line in the wire trough 7 and in the groove 32 can prevent the electrical line from being exposed to the outside and affected by rain or gravel, and can also prevent damage by animals biting, thereby ensuring the stability of power or signal transmission.

[0045] To control the expansion and contraction direction of the guide rail 3 during thermal expansion and contraction, Figure 1 , Figure 5 and Figure 6 As shown, the track described in the embodiment of the present application may also include a movable limiting mechanism 4, and the movable limiting mechanism 4 may include a limiting pressure block 41 and a first fastener 43. The limiting pressure block 41 is installed on the sleeper 1 through the first fastener 43, and the first fastener 43 may be, for example, a bolt, preferably a chemical bolt, so as to be tightly combined with the mounting hole opened on the sleeper 1. In addition, the limiting pressure block 41 is pressed against one side of the rail bottom of the guide rail 3 so that the guide rail 3 can perform telescopic movement relative to the limiting pressure block 41.

[0046] Both sides of the rail bottom of the guide rail 3 can be installed with movable limiting mechanisms 4. The movable limiting mechanisms 4 can be installed on both sides of a position at the same time, or multiple movable limiting mechanisms 4 can be installed on both sides of the guide rail 3 one by one along the length direction of the guide rail 3. The movable limiting mechanisms 4 can make both sides of the guide rail 3 limited by the limiting pressing blocks 41 and unable to move to the left and right sides. Since the limiting pressing blocks 41 are pressed on the guide rail 3, the guide rail 3 can be extended and retracted along the length direction of the guide rail 3 itself when it expands and contracts due to heat, thereby preventing the guide rail 3 from moving in other directions when it expands and contracts due to heat.

[0047] As an optional implementation, in order to strictly prevent the guide rail 3 from moving to the sides, a protrusion 33 may be designed on the edge of the side of the guide rail 3, and the limiting pressing block 41 may have a first groove 42 that is snap-fitted with the protrusion 33. In this way, through the snap-fitting of the protrusion 33 and the first groove 42, the guide rail 3 is strictly restricted by the limiting pressing block 41 and cannot move to the left or right sides. At the same time, the first groove 42 can make the guide rail 3 freely telescopic along its own length direction.

[0048] The movable limiting mechanism 4 may further include a first shock absorbing pad 44 , which is disposed between the limiting pressure block 41 and the sleeper 1 . Meanwhile, the first shock absorbing pad 44 is also located between the guide rail 3 and the sleeper 1 to provide a certain buffering and shock absorbing effect for the limiting pressure block 41 and the guide rail 3 .

[0049] To control the expansion and contraction direction and distance of the guide rail 3 during thermal expansion and contraction, Figure 1 , Figure 7 and Figure 8 As shown, the track described in the embodiment of the present application may also include a fixed limiting mechanism 5, and the fixed limiting mechanism 5 may include a positioning block 51 and a second fastener 53. The positioning block 51 is installed on the sleeper 1 through the second fastener 53, and the second fastener 53 may also be, for example, a bolt, preferably a chemical bolt, so as to be tightly combined with the mounting hole opened on the sleeper 1. One end of the positioning block 51 (the end close to the guide rail 3) has a positioning pin 55, and the positioning block 51 is crimped to one side of the bottom of the guide rail 3, and the positioning pin 55 is inserted into a positioning hole provided on one side of the bottom of the guide rail 3.

[0050] A fixed limiting mechanism 5 can be installed on both sides of the rail bottom of the guide rail 3. It is best to install the fixed limiting mechanism 5 on the left and right sides of the same position. If multiple fixed limiting mechanisms 5 are not installed at the same position, it is best to install these fixed limiting mechanisms 5 as close to each other as possible. The fixed limiting mechanism 5 can prevent the guide rail 3 from moving to the left and right sides at the fixed limiting mechanism 5, and it cannot telescope along its own length direction. In this way, the guide rail 3 has a certain installation position on the sleeper 1, and the telescopic movement of the guide rail 3 due to thermal expansion and contraction occurs on both sides of the fixed limiting mechanism 5. For example, if the fixed limiting mechanism 5 is installed in the middle of the guide rail 3, both ends of the guide rail 3 will telescope due to thermal expansion and contraction; if the fixed limiting mechanism 5 is installed at one end of the guide rail 3, the telescopic movement of this end due to thermal expansion and contraction is small, and the telescopic movement of the other end due to thermal expansion and contraction is large, so that the direction and distance of the telescopic movement of the guide rail 3 due to thermal expansion and contraction can be controlled to a certain extent.

[0051] As an optional embodiment, correspondingly, in order to strictly prevent the guide rail 3 from moving to both sides, a protrusion 33 may be designed on the edge of the side of the guide rail 3, and the positioning block 51 may have a second groove 52 that is snap-fitted with the protrusion 33. In this way, through the snap-fitting of the protrusion 33 and the second groove 52, the guide rail 3 is strictly restricted by the limiting block 41 and cannot move to the left or right sides. At the same time, the positioning pin 55 prevents the guide rail 3 from freely telescopically moving along its own length direction, thereby completely restricting the guide rail 3 and preventing it from moving at the fixed limiting mechanism 5.

[0052] The fixed limiting mechanism 5 may further include a second shock absorbing pad 54 , which is disposed between the positioning block 51 and the sleeper 1 . Meanwhile, the second shock absorbing pad 54 is also located between the guide rail 3 and the sleeper 1 to provide a certain buffering and shock absorbing effect for the positioning block 51 and the guide rail 3 .

[0053] In the embodiment of the present application, the movable limiting mechanism 4 and the fixed limiting mechanism 5 can be used in combination, wherein at least one movable limiting mechanism 4 can be provided, that is, at least one movable limiting mechanism 4 can be provided on the left and right sides of the guide rail 3 respectively, so that the guide rail 3 can be telescopically moved along the length direction while being unable to move left and right. It is best to provide only one fixed limiting mechanism 5, that is, it is best to provide only one fixed limiting mechanism 5 on the left and right sides of the guide rail 3 to fix the position of the guide rail 3 at that location, so as to facilitate the other parts of the guide rail 3 to be able to telescopically move in the specified direction.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above preferred embodiments shall not be regarded as limiting the present invention, and the protection scope of the present invention shall be subject to the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications shall also be regarded as the protection scope of the present invention.

Claims

1. A track suitable for use by a vehicle undercarriage inspection robot, characterized in that: It comprises a guide rail (3) and a telescopic guide member (6); A plurality of guide rails (3) are installed on the sleeper (1) and are connected end to end in sequence, and the end to end of adjacent guide rails (3) are arranged at a certain distance; The guide rail (3) is provided with a telescopic guide hole (31) extending along the length direction of the guide rail (3) at least at its end; The telescopic guide member (6) is inserted into the telescopic guide hole (31) of the adjacent guide rail (3).

2. A track suitable for use by a vehicle undercarriage inspection robot as claimed in claim 1, characterized in that: The end of the guide rail (3) has a mounting butt joint surface.

3. A track suitable for use by a vehicle undercarriage inspection robot as claimed in claim 2, characterized in that: The assembly docking surface is in a folded line shape or a curved line shape.

4. A track suitable for use by a vehicle undercarriage inspection robot as claimed in claim 1, characterized in that: The telescopic guide member (6) is connected to a blocking member (61), a portion of the blocking member (61) protrudes from the surface of the telescopic guide member (6), and the protruding portion cannot enter the telescopic guide hole (31).

5. A track suitable for use by a vehicle undercarriage inspection robot as claimed in claim 4, characterized in that: A notch (34) is provided at a portion of at least one end of the guide rail (3) corresponding to the blocking member (61).

6. A track suitable for use by a vehicle undercar inspection robot as claimed in claim 1, characterized in that: The guide rail (3) is provided with a groove (32) for accommodating the wire trough (7).

7. A track suitable for use by a vehicle underbody inspection robot as claimed in claim 1, characterized in that: It also comprises a movable limiting mechanism (4), the movable limiting mechanism (4) comprising a limiting pressure block (41) and a first fastener (43); the limiting pressure block (41) is mounted on the sleeper (1) via the first fastener (43), and the limiting pressure block (41) is pressed against one side of the guide rail (3) so that the guide rail (3) can perform telescopic movement relative to the limiting pressure block (41).

8. A track suitable for use by a vehicle undercarriage inspection robot as claimed in claim 7, characterized in that: The edge of the side of the guide rail (3) has a protrusion (33); the limiting pressure block (41) has a first groove (42) matched with the protrusion (33).

9. A track suitable for use by a vehicle underbody inspection robot as claimed in claim 1, characterized in that: The invention also comprises a fixed limiting mechanism (5), wherein the fixed limiting mechanism (5) comprises a positioning pressing block (51) and a second fastener (53); the positioning pressing block (51) is installed on the rail sleeper (1) via the second fastener (53); one end of the positioning pressing block (51) has a positioning pin (55), the positioning pressing block (51) is pressed onto one side of the guide rail (3), and the positioning pin (55) is inserted into a positioning hole provided on one side of the guide rail (3).

10. A track suitable for use by a vehicle underbody inspection robot as claimed in claim 9, characterized in that: The edge of the side of the guide rail (3) has a protrusion (33); the positioning pressing block (51) has a second groove (52) matched with the protrusion (33).

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