Track expansion joint device and track beam assembly

Abstract

The utility model relates to the technical field of track beams, in particular to a track expansion joint device and a track beam assembly. The embodiment of the utility model provides a track expansion joint device. The track expansion joint device comprises a first mounting plate, a second mounting plate, a sliding block assembly and a sliding groove assembly. The first mounting plate and the second mounting plate are oppositely arranged in an expansion joint between every two adjacent track beams in the expansion direction of the track beams, and the first mounting plate and the second mounting plate are fixedly connected with the track beams on the same side. The sliding block assembly and the sliding groove assembly are oppositely arranged, the sliding groove assembly is arranged on the side portion of the first mounting plate, the sliding block assembly is arranged on the side portion of the second mounting plate, the sliding block assembly and the sliding groove assembly can be in sliding fit in the telescopic direction of the track beam, and the sliding groove assembly and the sliding block assembly are flush with the walking face or the guiding face of the track beam.

Description

Technical Field

[0001] The utility model relates to the technical field of track beams, in particular to a track expansion joint device and a track beam assembly. Background Art

[0002] The intelligent sky-rail collection and distribution system solves the problems of plane traffic congestion through aerial rail three-dimensional transportation. The intelligent sky-rail collection and distribution system has the characteristics of unmanned driving, energy saving and environmental protection. Due to the influence of temperature rise and fall, there is usually a certain gap between two adjacent track beams, that is, the expansion joint. In order to ensure that the train passes smoothly through the gap, a telescopic device is generally provided.

[0003] However, the several expansion joint solutions currently in common use are not ideal. For example, the fork-tooth expansion joint solution has the function of expanding and contracting the track beam in the longitudinal direction. However, when the EMU passes through the expansion joint, the two adjacent sections of the track beam are subjected to large differences in vertical load (running wheels), lateral load (guide wheels) and running impact, resulting in large vertical and lateral misalignment between the two adjacent beams. When the EMU passes, the running wheels and guide wheels will be subjected to large concentrated stress, causing micro cracks in the running wheels and guide wheels, affecting the normal operation of the system. Utility Model Content

[0004] The present application provides a track expansion joint device and a track beam assembly, which improves the technical problem in the related art that when a motor vehicle passes through an expansion joint, the running wheels and guide wheels are subjected to relatively large concentrated stress, causing micro cracks to form on the running wheels and guide wheels, thus affecting the normal operation of the system.

[0005] In a first aspect, an embodiment of the present application provides a rail expansion joint device, comprising:

[0006] A first mounting plate and a second mounting plate are relatively arranged in the expansion joint between two adjacent track beams along the expansion direction of the track beam, and the first mounting plate and the second mounting plate are both fixedly connected to the track beam on the same side;

[0007] The slider assembly and the slide groove assembly are arranged opposite to each other, the slide groove assembly is arranged on the side of the first mounting plate, and the slider assembly is arranged on the side of the second mounting plate. The slider assembly and the slide groove assembly can slide together along the telescopic direction of the track beam, and the slide groove assembly and the slider assembly are flush with the running surface or guide surface of the track beam.

[0008] In some embodiments, the slide assembly includes a first fixed plate and a plurality of movable blocks, the first fixed plate is arranged on the side of the first mounting plate, and the plurality of movable blocks are arranged on the first fixed plate at intervals, and a slide is formed between each adjacent two movable blocks and the first fixed plate; the slider assembly includes a second fixed plate and a plurality of sliders arranged on the second fixed plate, the second fixed plate is arranged on the side of the second mounting plate, the plurality of sliders are arranged in a one-to-one correspondence with the plurality of slides, and the sliders slide in cooperation with the corresponding slides.

[0009] In some embodiments, the number of the movable blocks is odd, the plurality of movable blocks are arranged at equal intervals, and among the plurality of movable blocks, the width of the movable block located in the middle is greater than the width of the movable blocks located on both sides.

[0010] In some embodiments, the side of the slider has a first abutment surface and a first guide slope set at an angle, the groove wall of the slide groove has a second abutment surface and a second guide slope, the first guide slope and the second guide slope are both inclined toward the inner side of the slide groove, the first abutment surface is attached to the second abutment surface, and the first guide slope is attached to the second guide slope.

[0011] In some embodiments, the side of the slider also has an avoidance surface, which is arranged on the side of the first guide slope away from the first abutment surface, and the avoidance surface is arranged at an angle to the first guide slope; the groove wall of the slide groove is also provided with an avoidance groove, the avoidance surface is arranged in the avoidance groove, and the avoidance surface is spaced apart from the bottom surface of the avoidance groove.

[0012] In some embodiments, the slide groove further includes two overlapping portions, the two overlapping portions are spaced apart and arranged on the bottom wall of the slide groove, and the sliding block is arranged on the two overlapping portions.

[0013] In some embodiments, the device further comprises a rib plate disposed between the first fixing plate and the first mounting plate.

[0014] In some embodiments, a contact length between the slider assembly and the slide slot assembly has a first minimum value, and a distance between the slider assembly and the slide slot assembly has a second minimum value.

[0015] In some embodiments, the first minimum value and the second minimum value are both 30 mm to 45 mm.

[0016] In a second aspect, an embodiment of the present application provides a track beam assembly, including multiple track beams and the track expansion joint device described above.

[0017] The beneficial effects of this application are as follows:

[0018] The present application provides a track expansion joint device and a track beam assembly. Since the slider assembly and the slide groove assembly can slide and cooperate along the expansion and contraction direction of the track beam, that is, the expansion and contraction direction of the track beam is consistent with the sliding direction of the slider assembly and the slide groove assembly, it can ensure that the connection between the two adjacent track beams is continuous and smooth, and the running wheel and the guide wheel are evenly loaded when passing through the track expansion joint device, and the slider assembly and the slide groove assembly jointly bear the bearing capacity of the running wheel / guide wheel. The slider assembly and the slide groove assembly will not form a cantilever alone, so that the impact on the track beam can be reduced when the running wheel / guide wheel passes through, and to a certain extent, the formation of a misalignment between the two track beams is avoided, which causes micro cracks in the running wheel / guide wheel; since the side of the slide groove assembly away from the other end of the first mounting plate and the side of the slider assembly away from the other end of the second mounting plate are both flush with the running surface or guide surface of the track beam, the running wheel / guide wheel can smoothly pass through the slider assembly and the slide groove assembly from the running surface / guide surface of the track beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model.

[0020] Figure 1 A schematic structural diagram of the end of a track beam provided in an embodiment of the present application.

[0021] Figure 2 A schematic structural diagram of a track expansion joint device from a first perspective provided in an embodiment of the present application.

[0022] Figure 3 A schematic structural diagram of the track expansion joint device from a second perspective provided in an embodiment of the present application.

[0023] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0024] Description of reference numerals:

[0025] 100-track beam, 110-guide surface, 111-guide wheel, 120-running surface, 121-running wheel, 200-track expansion joint device, 210-first mounting plate, 211-screw hole, 220-second mounting plate, 230-slideway assembly, 231-first fixed plate, 232-movable block, 233-slideway, 234-second abutting surface, 235-second guide inclined surface, 236-avoidance groove, 237-lap plate, 238-rib plate, 240-slider assembly, 241-second fixed plate, 242-slider, 243-first abutting surface, 244-first guide inclined surface, 245-avoidance surface. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0030] Combination Figure 1The intelligent sky rail collection and distribution system solves problems such as plane traffic congestion through aerial rail three-dimensional transportation. The intelligent sky rail collection and distribution system has the characteristics of unmanned driving, energy saving and environmental protection. The height of the track beam 100 of the intelligent sky rail system is usually not less than 13m from the ground, and the cross-section of the track beam 100 is a box beam with a lower opening. During the application process, the track beam 100 expands and contracts due to seasonal changes and changes in ambient temperature. Depending on the length of the track beam 100 and the changes in ambient temperature, the expansion and contraction of a single track beam 100 is usually within ±30mm. Therefore, it is necessary to design and develop expansion joints with corresponding expansion and contraction functions to connect two adjacent track beams 100 to eliminate the influence of thermal expansion and contraction of the track beam 100 due to temperature changes.

[0031] Several expansion joint solutions commonly used at present are not ideal. For example, the fork-tooth expansion joint solution has the function of longitudinal expansion of the track beam 100. However, when the train passes through the expansion joint, the two adjacent sections of the track beam 100 are subjected to large differences in vertical load (running wheel 121), lateral load (guide wheel 111) and running impact, resulting in large vertical and lateral misalignment (discontinuous, uneven height) between the two adjacent beams. When the train passes, the running wheel 121 and the guide wheel 111 are subjected to large concentrated stress, and micro cracks are rapidly formed along the lateral direction of the running wheel 121 and the guide wheel 111, accelerating the damage of the running wheel 121 and the guide wheel 111, and causing the system operation noise to exceed the standard. The U-shaped steel plate expansion joint solution can better ensure the continuity and smoothness of two adjacent track beams 100, improve the operating conditions of the running wheels 121 and the guide wheels 111 of the motor vehicle, increase the service life of the running wheels 121 and the guide wheels 111, and reduce operating noise. However, the elastic deformation of the U-shaped steel plate alone cannot meet the thermal expansion and contraction deformation requirements of the track beam 100. It is necessary to periodically replace U-shaped steel plate expansion joint accessories of different sizes according to seasonal changes, which affects the system operation efficiency and increases the operating cost.

[0032] The embodiment of the present application provides a track expansion joint device 200, which can reduce to a certain extent the elastic deformation of the track beam 100 caused by the vertical load of the train and the impact load of operation, and the elastic deformation of the track beam 100 caused by the lateral load of the train and the impact load of operation in the related art, so that the connection between two adjacent track beams 100 is continuous and smooth, and the track beam 100 has a certain expansion and contraction function along the longitudinal direction, thereby improving the abnormal wear of the running wheels 121 and the guide wheels 111 of the intelligent sky rail system, excessive system operation noise, and frequent replacement of expansion joints according to seasonality, thereby improving the system operation efficiency and reducing operating costs.

[0033] The following is a description of the embodiments of the present application in conjunction with the accompanying drawings:

[0034] Combination Figure 1-Figure 3The embodiment of the present application provides a track expansion joint device 200, comprising a first mounting plate 210, a second mounting plate 220, a slider assembly 240 and a chute assembly 230. The first mounting plate 210 and the second mounting plate 220 are relatively arranged in the expansion joint between two adjacent track beams 100 along the expansion direction of the track beam 100, and the first mounting plate 210 and the second mounting plate 220 are fixedly connected to the track beam 100 on the same side. The chute assembly 230 is arranged on the side of the first mounting plate 210, and the slider assembly 240 is arranged on the side of the second mounting plate 220, that is, the chute assembly 230 and the slider assembly 240 are arranged relatively, and the slider assembly 240 and the chute assembly 230 can slide and cooperate along the expansion direction of the track beam 100, that is, the expansion direction of the track beam 100 is consistent with the sliding direction of the slider assembly 240 on the chute assembly 230, and the chute assembly 230 and the slider assembly 240 are flush with the running surface 120 or the guide surface 110 of the track beam 100.

[0035] In the track expansion joint device 200 provided in the embodiment of the present application, since the expansion and contraction direction of the track beam 100 is consistent with the sliding direction of the slider assembly 240 and the slide slot assembly 230, it can ensure that the connection between the two adjacent track beams 100 is continuous and smooth, and the running wheel 121 and the guide wheel 111 are evenly loaded when passing through the track expansion joint device 200, and the slider assembly 240 and the slide slot assembly 230 jointly bear the bearing force of the running wheel 121 / guide wheel 111, and the slider assembly 240 and the slide slot assembly 230 will not form a cantilever alone, so that the running wheel 121 / guide wheel 111 is uniformly loaded. When the guide wheel 111 passes through, the impact on the track beam 100 can be reduced, and the formation of a misalignment between the two track beams 100 can be avoided to a certain extent, which causes microcracks in the running wheel 121 / guide wheel 111, thereby increasing the service life of the running wheel 121 / guide wheel 111; since the slide groove assembly 230 and the slider assembly 240 are flush with the running surface 120 or the guide surface 110 of the track beam 100, the running wheel 121 / guide wheel 111 can smoothly pass through the slider assembly 240 and the slide groove assembly 230 from the running surface 120 / guide surface 110 of the track beam 100.

[0036] It should be noted that the track beam 100 has two running surfaces 120 for carrying running wheels 121 and two guide surfaces 110 for carrying guide wheels 111. Therefore, four track expansion joint devices 200 are required between two adjacent track beams 100, which are respectively flush with the two running surfaces 120 and the two guide surfaces 110 of the track beam 100. The guide wheels 111 of the motor vehicle are arranged perpendicularly to the running wheels 121, and the running surfaces 120 on the track beam 100 are also arranged perpendicularly to the guide surfaces 110. Therefore, among the four track expansion joint devices 200, two track expansion joint devices 200 are perpendicular to the other two track expansion joint devices 200. The cooperation principle of the running wheel 121 and the guide wheel 111 with the corresponding rail expansion joint device 200 is completely consistent. For the convenience of description, the following description takes the cooperation between the running wheel 121 and the rail expansion joint device 200 as an example, and the cooperation between the guide wheel 111 and the corresponding rail expansion joint device 200 can refer to the cooperation between the running wheel 121 and the rail expansion joint device 200.

[0037] In some embodiments, the slide assembly 230 includes a first fixed plate 231 and a plurality of movable blocks 232, the first fixed plate 231 is disposed on the side of the first mounting plate 210, the plurality of movable blocks 232 are disposed at intervals on the first fixed plate 231, and a slide 233 is formed between each two adjacent movable blocks 232 and the first fixed plate 231. The slider assembly 240 includes a second fixed plate 241 and a plurality of sliders 242 disposed on the second fixed plate 241, the second fixed plate 241 is disposed on the side of the second mounting plate 220, the plurality of sliders 242 are disposed one-to-one with the plurality of slides 233, and the sliders 242 slide in cooperation with the corresponding slides 233.

[0038] Of course, the slide groove 233 is arranged on the side of the first fixing plate 231 relative to the second fixing plate 241, and the slider 242 is arranged on the side of the second fixing plate 241 relative to the first fixing plate 231, so that the slider 242 can cooperate with the corresponding slide groove 233. Since the first mounting plate 210 is used to form the slide groove 233 and support the slider 242, the thickness of the first mounting plate 210 needs to be thicker to improve the structural strength of the slide groove assembly 230, while the second mounting plate 220 is only used to install the slider 242, so the thickness of the second mounting plate 220 can be relatively thin.

[0039] It is worth mentioning that, with the expansion and contraction direction of the track beam 100 as the longitudinal direction, the bottom wall and side wall of the slide groove 233 can limit the slider 242 in the vertical and horizontal directions, ensuring that the vertical and horizontal deformation of the two adjacent track beams 100 at the expansion joint are uniform, so that the running wheel 121 / guide wheel 111 runs smoothly and reduces impact noise.

[0040] In some embodiments, in the track expansion joint device 200, a slide groove 233 is formed between each two adjacent movable blocks 232 and the first fixed plate 231, and the cooperation between the slider 242 and the slide groove 233 forms a groove in the slide groove 233, which affects the passage of the running wheel 121. Therefore, the number of movable blocks 232 is odd, and the plurality of movable blocks 232 are arranged at equal intervals, and among the plurality of movable blocks 232, the width of the movable block 232 located in the middle is greater than the width of the movable blocks 232 located on both sides.

[0041] In the track system, two parallel track beams 100 are included, and the motor vehicle has a pair of running wheels 121, each running wheel 121 is carried on the running surface 120 of one track beam 100, and the running wheel 121 is located in the middle of the running surface 120. Since the number of movable blocks 232 is odd, there must be a movable block 232 located in the middle, and multiple movable blocks 232 are arranged at equal intervals, so the movable block 232 located in the middle among the multiple movable blocks 232 is located on the center line of the running surface 120 and can carry the running wheel 121, and the width of the movable block 232 located in the middle is greater than the width of the movable blocks 232 located on both sides, so that the movable block 232 located in the middle is mainly in contact with the running wheel 121, reducing the contact area between the running wheel 121 and the grooves on both sides, thereby improving the stability of the running wheel 121.

[0042] It should be noted that the number of the movable blocks 232 is at least three, and may also be five, seven, etc., without limitation. Here, the "movable blocks 232 on both sides" refers to all movable blocks 232 except the middle movable block 232.

[0043] In some embodiments, in combination Figure 3 and Figure 4When the running wheel 121 moves from the slider assembly 240 to the slide slot assembly 230, the slider assembly 240 will be subjected to force first, and because the bottom wall of the slide slot 233 is located below the slider 242, it can be ensured that the slide slot assembly 230 and the slider assembly 240 jointly carry the running wheel 121; and when the running wheel 121 moves from the slide slot assembly 230 to the slider assembly 240, the slide slot assembly 230 will be subjected to force first, and before the running wheel 121 enters the range of the slider assembly 240, the slide slot assembly 230 will become a cantilever structure, which is subjected to a greater impact. In order to ensure that when the running wheel 121 moves from the slide slot assembly 230 to the slider assembly 240, the slide slot assembly 230 will be subjected to force first, and before the running wheel 121 enters the range of the slider assembly 240, the slide slot assembly 230 will become a cantilever structure, which is subjected to a greater impact. When 121 moves in the direction from the slide slot assembly 230 to the slider assembly 240, the slide slot assembly 230 and the slider assembly 240 can also jointly carry the running wheel 121. The side of the slider 242 has a first abutting surface 243 and a first guide slope 244 set at an angle. The groove wall of the slide slot 233 has a second abutting surface 234 and a second guide slope 235. The first guide slope 244 and the second guide slope 235 are both inclined toward the inner side of the slide slot 233. The first abutting surface 243 is in contact with the second abutting surface 234, and the first guide slope 244 is in contact with the second guide slope 235.

[0044] Since the first guide slope 244 and the second guide slope 235 are both inclined toward the inner side of the slide groove 233, when the running wheel 121 passes through the slide groove assembly 230 first, the slide groove assembly 230 will be subjected to a downward force. At the same time, part of the bearing force exerted on the slide groove assembly 230 will be transmitted to the slider assembly 240 through the cooperation of the first guide slope 244 and the second guide slope 235, so that the slide groove assembly 230 and the slider assembly 240 can also bear the bearing force together, thereby reducing the impact force exerted on the track beam 100.

[0045] Furthermore, the first abutting surface 243 is in contact with the second abutting surface 234, and the first guiding inclined surface 244 is in contact with the second guiding inclined surface 235. That is, there are two matching surfaces between the slide groove 233 and the slider 242, so that the slide groove 233 and the slider 242 can be matched more accurately, thereby improving the limiting effect of the slide groove 233 on the slider 242 and improving the running stability of the running wheel 121 / guide wheel 111.

[0046] Of course, both sides of the slider 242 have a first abutment surface 243 and a first guide slope 244, and the two side groove walls of the slide groove 233 also have a second abutment surface 234 and a second guide slope 235, so as to increase the force transmission area between the slide groove 233 and the slider 242, and improve the joint load-bearing effect of the slider assembly 240 and the slide groove assembly 230.

[0047] In some embodiments, the first abutment surface 243 can be arranged on the side of the first guide slope 244 away from the bottom wall of the slide groove 233. Since the first guide slope 244 is inclined, the tail end of the first guide slope 244 will form a sharp angle. Correspondingly, the side wall and the bottom wall of the slide groove 233 also form a sharp-angle groove to cooperate with the tail end of the first guide slope 244. However, since the slider 242 and the slide groove 233 will slide relative to each other, and the friction between the sharp corner and the inner wall of the slide groove 233 is greater, the slider 242 and the slide groove 233 will be greatly worn, affecting the service life of the track expansion joint device 200. Therefore, the side of the slider 242 also has an avoidance surface 245, and the avoidance surface 245 is arranged on the side of the first guide inclined surface 244 away from the first abutment surface 243, and the avoidance surface 245 and the first guide inclined surface 244 are arranged at an angle; the groove wall of the slide groove 233 is also provided with an avoidance groove 236, and the avoidance surface 245 is arranged in the avoidance groove 236, and the avoidance surface 245 and the bottom surface of the avoidance groove 236 are spaced apart, that is, the avoidance surface 245 is not in direct contact with the inner wall of the slide groove 233, thereby reducing the wear of the slider 242 and the slide groove 233.

[0048] In some embodiments, the slide groove 233 further includes two overlapping portions, the two overlapping portions are spaced apart and arranged on the bottom wall of the slide groove 233, and the slider 242 is arranged on the two overlapping portions.

[0049] Since the slider 242 and the slide groove 233 will slide relative to each other, the inner walls of the slider 242 and the slide groove 233 need to be finely processed to ensure the relative sliding accuracy. Since the two overlapping parts are arranged at intervals, a groove will be formed between the two overlapping parts. Since the slider 242 is arranged on the two overlapping parts, that is, the slider 242 does not contact the groove between the two overlapping parts, only the overlapping part needs to be finely processed, and the groove between the two overlapping parts does not need to be finely processed, thereby saving processing costs.

[0050] In some embodiments, in order to further enhance the structural strength of the slide assembly 230, the device further includes a rib plate, which is disposed between the first fixing plate 231 and the first mounting plate 210, and the number of the rib plates is not limited.

[0051] In some embodiments, when the temperature is low in winter, the track beam 100 will shrink, the expansion joint will become larger, and the slider assembly 240 and the slide groove assembly 230 will slide in opposite directions. In order to avoid the slider assembly 240 and the slide groove assembly 230 from separating, the contact length between the slider assembly 240 and the slide groove assembly 230 needs to have a first minimum value; when the temperature is high in summer, the track beam 100 will stretch, the expansion joint will become smaller, and the slider assembly 240 and the slide groove assembly 230 will slide relative to each other. Therefore, the distance between the slider assembly 240 and the slide groove assembly 230 needs to have a second minimum value to leave space for the extension of the track beam 100.

[0052] The contact length between the slider assembly 240 and the slide slot assembly 230 is the overlapping length along the telescopic direction of the track beam 100. Specifically, the first minimum value and the second minimum value may both be 30 mm to 45 mm.

[0053] In some embodiments, a plurality of screw holes 211 are provided on the first mounting plate 210 and the second mounting plate 220 , which can be connected to the track beam 100 on the same side by bolts.

[0054] It should be noted that since the installation accuracy of the first mounting plate 210 and the second mounting plate 220 and the track beam 100 on the same side may not be high, it may happen that the side of the slide groove assembly 230 away from the other end of the first mounting plate 210 and the side of the slider assembly 240 away from the other end of the second mounting plate 220 are not completely flush with the running surface 120 or the guide surface 110 of the track beam 100. In order not to affect the walking of the running wheel 121 / guide wheel 111, tools can be used to grind the parts where the slide groove assembly 230 and the slider assembly 240 contact the track beam 100 into an arc shape.

[0055] Based on the same inventive concept, the embodiment of the present application also provides a track beam 100 assembly, including multiple track beams 100 and the track expansion joint device 200 described above. Of course, four track expansion joint devices 200 are required between each two adjacent track beams 100, corresponding to the two guide surfaces 110 and the two running surfaces 120 of the track beam 100, respectively.

[0056] The beneficial effects of this application are as follows:

[0057] 1) Since the sliding direction of the slider assembly 240 and the slide groove assembly 230 is consistent with the expansion and contraction direction of the track beam 100 caused by temperature changes, the connection between two adjacent track beams 100 can be made continuous and smooth, and the running wheels 121 and the guide wheels 111 are evenly loaded when passing through the track expansion joint device 200.

[0058] 2) When the running wheel 121 / guide wheel 111 moves from the slider assembly 240 to the direction of the slide slot assembly 230, the slide slot assembly 230 supports the slider assembly 240, ensuring that the slider assembly 240 and the slide slot assembly 230 jointly bear the bearing capacity of the running wheel 121 / guide wheel 111, and the slider assembly 240 and the slide slot assembly 230 will not form a cantilever alone. After the two adjacent track beams 100 are elastically deformed due to load and impact, the connecting portion between the two adjacent track beams 100 is still a continuous plane.

[0059] 3) When the running wheel 121 / guide wheel 111 moves from the slide slot assembly 230 to the slider assembly 240, the slide slot assembly 230 limits the slider assembly 240, ensuring that the slider assembly 240 and the slide slot assembly 230 jointly bear the bearing capacity of the running wheel 121 / guide wheel 111, and the slider assembly 240 and the slide slot assembly 230 will not form a cantilever alone. After the two adjacent track beams 100 are elastically deformed due to load and impact, the connection portion between the two adjacent track beams 100 is still a continuous plane.

[0060] 4) When the running wheel 121 / guide wheel 111 is running, the slide groove assembly 230 limits the slider assembly 240 in the vertical and horizontal directions of the track beam 100, ensuring that the vertical and horizontal deformations of two adjacent track beams 100 at the connection are uniform, so that the running wheel 121 / guide wheel 111 runs smoothly with less impact noise.

[0061] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0062] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A rail expansion joint device, characterized in that: include: A first mounting plate and a second mounting plate are relatively arranged in the expansion joint between two adjacent track beams along the expansion direction of the track beam, and the first mounting plate and the second mounting plate are both fixedly connected to the track beam on the same side; The slider assembly and the slide groove assembly are arranged opposite to each other, the slide groove assembly is arranged on the side of the first mounting plate, and the slider assembly is arranged on the side of the second mounting plate. The slider assembly and the slide groove assembly can slide together along the telescopic direction of the track beam, and the slide groove assembly and the slider assembly are flush with the running surface or guide surface of the track beam.

2. The rail expansion joint device according to claim 1, characterized in that: The slide assembly includes a first fixed plate and a plurality of movable blocks, the first fixed plate is arranged on the side of the first mounting plate, the plurality of movable blocks are arranged on the first fixed plate at intervals, and a slide is formed between each two adjacent movable blocks and the first fixed plate; the slider assembly includes a second fixed plate and a plurality of sliders arranged on the second fixed plate, the second fixed plate is arranged on the side of the second mounting plate, the plurality of sliders are arranged in a one-to-one correspondence with the plurality of slides, and the sliders are slidably matched with the corresponding slides.

3. The rail expansion joint device according to claim 2, characterized in that: The number of the movable blocks is odd, and the plurality of movable blocks are arranged at equal intervals. Among the plurality of movable blocks, the width of the movable block located in the middle is greater than the width of the movable blocks located at both sides.

4. The rail expansion joint device according to claim 2, characterized in that: The side of the slider has a first abutment surface and a first guide slope that are set at an angle, and the groove wall of the slide groove has a second abutment surface and a second guide slope, the first guide slope and the second guide slope are both inclined toward the inner side of the slide groove, the first abutment surface is attached to the second abutment surface, and the first guide slope is attached to the second guide slope.

5. The rail expansion joint device according to claim 4, characterized in that: The side of the slider also has an avoidance surface, which is arranged on the side of the first guide slope away from the first abutment surface, and the avoidance surface is arranged at an angle to the first guide slope; the groove wall of the slide groove is also provided with an avoidance groove, the avoidance surface is arranged in the avoidance groove, and the avoidance surface is spaced apart from the bottom surface of the avoidance groove.

6. The rail expansion joint device according to claim 2, characterized in that: The slide groove further comprises two overlapping parts, the two overlapping parts are arranged at intervals on the bottom wall of the slide groove, and the sliding block is arranged on the two overlapping parts.

7. The rail expansion joint device according to claim 2, characterized in that: The device further comprises a rib plate, wherein the rib plate is arranged between the first fixing plate and the first mounting plate.

8. The rail expansion joint device according to any one of claims 1 to 7, characterized in that: The contact length between the slider assembly and the slide slot assembly has a first minimum value, and the distance between the slider assembly and the slide slot assembly has a second minimum value.

9. The rail expansion joint device according to claim 8, characterized in that: The first minimum value and the second minimum value are both 30 mm to 45 mm.

10. A track beam assembly, characterized in that: It comprises a multi-grade track beam and a track expansion joint device as described in any one of claims 1 to 9.

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