CN216467790U - Underframe structure and suspension type rail train - Google Patents

Abstract

The utility model relates to a rail train technical field particularly, relates to an underframe structure and suspension type rail train, underframe structure is used for connecting floor and shrouding, the camera includes a supporting plate, first connection structure and second connection structure, first connection structure includes first connecting piece and sets up the first spread groove in the backup pad, the one end of first connecting piece slides and sets up in first spread groove, the other end of first connecting piece is suitable for to be connected with the floor, second connection structure includes the second connecting piece and sets up the second spread groove in the backup pad, the one end of second connecting piece slides and sets up in the second spread groove, the other end of second connecting piece is suitable for to be connected with the shrouding. The utility model has the advantages of make things convenient for the ann of the floor and the shrouding in the backup pad to tear open.

Description

Underframe structure and suspension type rail train

Technical Field

The utility model relates to a rail train technical field particularly, relates to an underframe structure and suspension type rail train.

Background

At present, the urban life rhythm is fast, the road traffic pressure is large, and the condition of congestion often occurs. In order to relieve the pressure of road traffic, a suspended rail train is produced and operates in a suspended mode in the air, and the pressure of the road traffic is effectively relieved by the unique operation mode. Suspension type rail train's carriage comprises chassis, side wall, headwall and roof-rack etc. and after the carriage equipment was accomplished, need install floor and shrouding respectively at the upper and lower both sides face of chassis to this protects and decorates the chassis, and floor and shrouding are the welding usually on the chassis, follow-up dismantlement, maintenance difficulty.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be, how to make things convenient for the ann of the floor in the backup pad and shrouding to tear open.

In order to solve the problem, the utility model provides an underframe structure for connect floor and shrouding, including backup pad, first connection structure and second connection structure, first connection structure include first connecting piece with set up in first connecting groove in the backup pad, the one end of first connecting piece slide set up in the first connecting groove, the other end of first connecting piece be suitable for with the floor is connected, second connection structure include the second connecting piece with set up in second connecting groove in the backup pad, the one end of second connecting piece slide set up in the second connecting groove, the other end of second connecting piece be suitable for with the shrouding is connected.

Optionally, two first limiting plates are arranged at the first connecting groove, the two first limiting plates are respectively arranged on two opposite groove walls of the first connecting groove, and the first limiting plate is suitable for limiting the first connecting piece to be separated from the first connecting groove along a first direction.

Optionally, at least one first partition groove is formed in the first limiting plate, the first partition groove is suitable for dividing the first limiting plate into multiple sections, and one end of the first connecting piece is suitable for entering the first connecting groove through the first partition groove.

Optionally, the second connecting groove is provided with two second limiting plates, the two second limiting plates are respectively disposed on two opposite groove walls of the second connecting groove, and the second limiting plate is adapted to limit the first connecting element to be separated from the second connecting groove along the second direction.

Optionally, the second limiting plate is provided with at least one second separating groove, the second separating groove is adapted to divide the second limiting plate into multiple sections, and one end of the second connecting member is adapted to enter the second connecting groove through the second separating groove.

Optionally, the underframe structure further comprises a frame and a third connecting structure, the support plate is adapted to be connected to the frame, the third connecting structure is disposed on an inner side surface of the frame, and the third connecting structure is adapted to be connected to the floor and/or the sealing plate.

Optionally, the third connecting structure includes a third connecting member and a third connecting groove disposed on an inner side surface of the frame, one end of the third connecting member is adapted to be slidably disposed in the third connecting groove, and the other end of the third connecting member is adapted to be connected to the floor or the sealing plate.

Optionally, two third limiting plates are disposed at the third connecting groove, the two third limiting plates are disposed on two opposite groove walls of the third connecting groove, and the third limiting plate is adapted to limit the third connecting member to be separated from the first connecting groove along a third direction.

Optionally, at least one third partition groove is formed in the third limiting plate, the third partition groove is suitable for dividing the third limiting plate into multiple sections, and one end of the third connecting piece is suitable for entering the third connecting groove through the third partition groove.

The utility model also provides a suspension type rail train, include as above chassis structure.

Compared with the prior art, the beneficial effects of the utility model are that: when the floor and the sealing plate are installed on the underframe, the floor is installed on the inner side of the underframe through the first connecting structure, the sealing plate is installed on the outer side of the underframe through the second connecting structure, when the floor is installed, the first connecting piece slides in the first connecting groove, so that the position of the first connecting piece can be conveniently adjusted according to the connecting position of the floor, the floor can be conveniently installed and fixed, and when the floor needs to be disassembled, the floor can be conveniently taken down from the supporting plate by releasing the connection of the first connecting piece and the floor; when the shrouding is installed, the second connecting piece slides in the second spread groove, and is convenient for adjust the position of second connecting piece according to the hookup location of shrouding to this is convenient to be installed fixedly to the shrouding, when needing to dismantle the shrouding, through removing being connected of second connecting piece and shrouding, and conveniently takes off the shrouding in the backup pad, thereby has made things convenient for the ann of bottom plate in the backup pad and backup pad to tear open.

Drawings

Fig. 1 is a schematic structural view of an underframe structure in an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic structural view of another view angle of the underframe structure in the embodiment of the invention;

fig. 4 is an enlarged schematic view of a portion B in fig. 3.

Description of reference numerals:

1. a support plate; 2. a frame; 3. a first connecting groove; 301. a first mounting plate; 302. a first limit plate; 303. a first partition groove; 4. a second connecting groove; 401. a second mounting plate; 402. a second limiting plate; 403. a second separation groove; 5. a third connecting groove; 501. a third mounting plate; 502. a third limiting plate; 503. a third partition groove; 6. an escape hole; 7. a guide wheel.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it is to be understood that the forward direction of "X" in the drawings represents the right direction, and correspondingly, the reverse direction of "X" represents the left direction; the forward direction of "Y" represents forward, and correspondingly, the reverse direction of "Y" represents rearward; the forward direction of "Z" represents the upward direction, and correspondingly, the reverse direction of "Z" represents the downward direction, and the terms "X", "Y", "Z", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings of the specification, and are merely for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", and the like in the embodiments indicate terms of orientation, and are only used for simplifying the description of positional relationships based on the drawings of the specification, and do not represent that the elements, devices, and the like indicated in the description must be operated according to specific orientations and defined operations and methods, configurations, and such terms of orientation do not constitute limitations of the present invention.

In addition, the terms "first" and "second" mentioned in the embodiments of the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The embodiment of the utility model provides an underframe structure for connect floor and shrouding, including backup pad 1, first connection structure and second connection structure, first connection structure includes first connecting piece and sets up first spread groove 3 in backup pad 1, and the one end of first connecting piece slides and sets up in first spread groove 3, and the other end of first connecting piece is suitable for and is connected with the floor, and second connection structure includes the second connecting piece and sets up second spread groove 4 in backup pad 1, and the one end of second connecting piece slides and sets up in second spread groove 4, and the other end of second connecting piece is suitable for and is connected with the shrouding.

Referring to fig. 1 and 3, the underframe structure comprises a supporting plate 1, and when the underframe is actually used, a floor and a sealing plate are required to be installed on two opposite side surfaces of the supporting plate 1, wherein the floor is installed on the side surface of the supporting plate 1 facing the interior of the carriage of the overhead rail train, and the sealing plate is installed on the side surface of the supporting plate 1 facing away from the floor. The first connecting structure comprises a first connecting piece and a first connecting groove 3 arranged on the side surface of the supporting plate 1. The length direction of the first connecting slot 3 is the same as the length direction of the support plate 1, in other embodiments, the length direction of the first connecting slot 3 may also be the same as the width direction of the support plate 1, and the length direction of the first connecting slot 3 may also be disposed at an angle to the length direction of the support plate 1. First connecting groove 3 is equipped with a plurality ofly, and a plurality of first connecting grooves 3 interval sets up in the width direction of backup pad 1, and every first connecting groove 3 all slides and is provided with a plurality of first connecting pieces to this is convenient for carry out many places to the floor and fixes.

Referring to fig. 1 and 2, the first connecting groove 3 is surrounded by a supporting plate 1 and two first mounting plates 301 which are spaced and oppositely arranged, the two first mounting plates 301 are side walls of the first connecting groove 3, and the supporting plate 1 is a bottom wall of the first connecting groove 3. One end of the first connecting piece is slidably arranged between the two first mounting plates 301. The first mounting plate 301 is fixed to the side of the support plate 1 by welding, thereby maintaining the integrity of the support plate 1. In other embodiments, the first connecting slot 3 can also be directly opened on the side of the supporting plate 1. The first connecting piece is a first bolt, the head of the first bolt is arranged in the first connecting groove 3 in a sliding mode, and the head of the first bolt is not prone to being separated from the first connecting groove 3. The first bolt is connected with the floor through threads, so that the floor can be conveniently fixed on the supporting plate 1, and when the floor needs to be disassembled for replacement, the connection between the first bolt and the floor is released, and the floor can be conveniently taken down.

Referring to fig. 3 and 4, the second coupling structure includes a second coupling member and a second coupling groove 4 provided at a side of the support plate 1. The length direction of the second connecting groove 4 is the same as the length direction of the support plate 1, in other embodiments, the length direction of the second connecting groove 4 may also be the same as the width direction of the support plate 1, and the length direction of the second connecting groove 4 may also be arranged at an angle with the length direction of the support plate 1. Second spread groove 4 is equipped with a plurality ofly, and a plurality of second spread grooves 4 interval sets up in the width direction of backup pad 1, and every second spread groove 4 all slides and is provided with a plurality of second connecting pieces to this is convenient for carry out many places to the shrouding and fixes.

Referring to fig. 3 and 4, the second connecting groove 4 is surrounded by the support plate 1 and two spaced second mounting plates 401, where the two second mounting plates 401 are sidewalls of the second connecting groove 4, and the support plate 1 is a bottom wall of the second connecting groove 4. One end of the second link is slidably disposed between the two second mounting plates 401. The second mounting plate 401 is fixed to the side of the support plate 1 by welding, thereby maintaining the integrity of the support plate 1. In other embodiments, the second connecting slot 4 may also be directly opened at the side of the supporting plate 1. The second connecting piece is a second bolt, the head of the second bolt is slidably arranged in the second connecting groove 4, and the head of the second bolt is not easy to separate from the second connecting groove 4. Through threaded connection between second bolt and the shrouding, and be convenient for fix the shrouding on backup pad 1, and when needing to dismantle the shrouding and change, remove being connected of second bolt and shrouding, and be convenient for take off the shrouding.

Set up like this, when floor and shrouding were installed to the chassis, the inboard at the chassis was installed through first connection structure to the floor, and the shrouding passes through the second connection structure to be installed in the outside of chassis. Specifically, when the floor is installed, the first bolt slides in the first connecting groove 3, so that the position of the first bolt can be conveniently adjusted according to the connecting position of the floor, the floor can be conveniently installed and fixed, and when the floor needs to be disassembled, the floor can be conveniently taken down from the supporting plate 1 by releasing the connection between the first bolt and the floor; when the shrouding was installed, the second bolt slided in second spread groove 4, and was convenient for adjust the position of second bolt according to the hookup location of shrouding to this is convenient to be installed fixedly to the shrouding, and when needing to dismantle the shrouding, through removing being connected of second bolt and shrouding, and conveniently takes off the shrouding from backup pad 1, thereby made things convenient for the ann of bottom plate and backup pad 1 on the backup pad 1 to tear open.

Optionally, two first limiting plates 302 are disposed at the first connecting groove 3, the two first limiting plates 302 are respectively disposed on two opposite groove walls of the first connecting groove 3, and the first limiting plate 302 is adapted to limit the first connecting member to be separated from the first connecting groove 3 along the first direction.

Referring to fig. 1 and 2, wherein the first limiting plates 302 are disposed on two opposite groove walls of the first connecting groove 3, in this embodiment, the first limiting plates 302 are disposed on two sides of the first mounting plates 301 facing each other, and the first limiting plates 302 are disposed at an angle with the first mounting plates 301, and preferably, the first limiting plates 302 are disposed perpendicular to the first mounting plates 301. The first limiting plate 302 is bent from the first mounting plate 301 to be integrally formed, and in other embodiments, the first limiting plate 302 and the first mounting plate 301 may be fixed by welding. When the first connecting member, i.e. the first bolt, slides in the first connecting groove 3, the first limiting plate 302 abuts against the head of the first bolt, so as to limit the first bolt to be separated from the first connecting groove 3. When the first bolt slides in the first connecting groove 3, under the action of the first limiting plate 302, the first bolt is not easy to be separated from the first connecting groove 3 from a first direction, which is a direction perpendicular to the first limiting plate 302 and is a Z-axis direction in the drawing. When the first bolts are installed into the first coupling grooves 3, the first bolts are slid into the first coupling grooves 3 from the end portions of the first installation plate 301, thereby facilitating the increase in the number of the first bolts in the first coupling grooves 3.

With such an arrangement, when the first bolt slides in the first connecting groove 3, the head of the first bolt abuts against the first limiting plate 302, and at this time, the first bolt is not easy to be separated from the first connecting groove 3. When the floor is fixed, in the process of screwing the first bolt, the head of the first bolt gradually abuts against the first limit plate 302, so that the floor is fixed on the support plate 1.

Optionally, the first limiting plate 302 is provided with at least one first separating groove 303, the first separating groove 303 is adapted to divide the first limiting plate 302 into multiple sections, and one end of the first connecting member is adapted to enter the first connecting groove 3 through the first separating groove 303.

Referring to fig. 1 and 2, in which the first partition groove 303 is provided in plurality, the first partition groove 303 divides the first stopper plate 302 into a plurality of sections, and the head of the first bolt easily passes through the first partition groove 303, and the first bolt can enter or leave the first connection groove 3 from the first partition groove 303. In this embodiment, the first partition groove 303 not only divides the first stopper plate 302 into a plurality of segments, but also divides the first mounting plate 301 into a plurality of segments.

With the arrangement, when the floor is installed, the position of the first bolt is determined according to the connecting position of the floor, and when the first bolt is placed according to the installation position, the first bolt can enter the first connecting groove 3 from the first separating grooves 303, so that the sliding distance of the first bolt in the first connecting groove 3 is shortened, the positioning and placing time of the first bolt is prolonged, and the installation efficiency of the floor is improved.

Optionally, two second limiting plates 402 are disposed at the second connecting groove 4, the two second limiting plates 402 are respectively disposed on two opposite groove walls of the second connecting groove 4, and the second limiting plate 402 is adapted to limit the first connecting element from being separated from the second connecting groove 4 along the second direction.

Referring to fig. 3 and 4, wherein the second limiting plates 402 are disposed on two opposite groove walls of the second connecting groove 4, in this embodiment, the second limiting plates 402 are disposed on two sides of the second mounting plates 401 facing each other, and the second limiting plates 402 and the second mounting plates 401 are disposed at an angle, preferably, the second limiting plates 402 are disposed perpendicular to the second mounting plates 401. The second limiting plate 402 is bent from the second mounting plate 401 to be integrally formed, and in other embodiments, the second limiting plate 402 and the second mounting plate 401 may be fixed by welding. When the second connecting member, i.e. the second bolt, slides in the second connecting groove 4, the second limiting plate 402 abuts against the head of the second bolt, so as to limit the second bolt to be separated from the second connecting groove 4. When the second bolt slides in the second connecting groove 4, under the action of the second limiting plate 402, the second bolt is not easy to be separated from the second connecting groove 4 from the second direction, which is the direction perpendicular to the second limiting plate 402 and is the Z-axis direction in the drawing. When the second bolt is installed into the second connection groove 4, the second bolt is slid into the second connection groove 4 from the end of the second installation plate 401, so that the number of the second bolts in the second connection groove 4 is increased.

With such an arrangement, when the second bolt slides in the second connecting groove 4, the head of the second bolt abuts against the second limiting plate 402, and at this time, the second bolt is not easy to disengage from the second connecting groove 4. When the sealing plate is fixed, in the process of screwing the second bolt, the head of the second bolt gradually abuts against the second limiting plate 402, so that the sealing plate is fixed on the supporting plate 1.

Optionally, the second limiting plate 402 has at least one second separating groove 403 formed therein, the second separating groove 403 is adapted to divide the second limiting plate 402 into multiple sections, and one end of the second connecting member is adapted to enter the second connecting groove 4 through the second separating groove 403.

Referring to fig. 3 and 4, in which the second separation groove 403 is provided in plurality, the second separation groove 403 divides the second restriction plate 402 into a plurality of stages, and the head of the second bolt is easily passed through the second separation groove 403, and the second bolt can be moved into or out of the second connection groove 4 from the second separation groove 403. In this embodiment, the second partition groove 403 not only divides the second limiting plate 402 into a plurality of sections, but also divides the second mounting plate 401 into a plurality of sections.

By the arrangement, when the sealing plate is installed, the position of the second bolt is determined according to the connecting position of the sealing plate, and when the second bolt is placed according to the installation position, the second bolt can enter the second connecting groove 4 from the second separating grooves 403, so that the sliding distance of the second bolt in the second connecting groove 4 is shortened, the positioning and placing time of the second bolt is prolonged, and the installation efficiency of the sealing plate is improved.

Optionally, the base frame structure further comprises a frame 2 and a third connecting structure, the support plate 1 is adapted to be connected to the frame 2, the third connecting structure is provided on an inner side of the frame 2, and the third connecting structure is adapted to be connected to a floor and/or a sealing plate.

Referring to fig. 3 and 4, the base frame structure further includes a frame 2, wherein the thickness of the frame 2 is greater than that of the support plate 1, and the circumferential side surface of the support plate 1 is fixed to the inner circumferential side surface of the frame 2. In this embodiment, the supporting plate 1 is rectangular, and the frame 2 is square. Third connection structure sets up the medial surface at frame 2, and after floor and/or shrouding installed in backup pad 1, rethread third connection structure made and is connected between the edge of floor and/or shrouding and the framework, and improved the stability on floor and/or shrouding. In this embodiment, the third connecting structure is located below the supporting plate 1, and the third connecting structure is used for connecting the sealing plate and the frame 2, so as to improve the connection stability of the sealing plate.

Set up like this, the shrouding is further fixed the shrouding through third connection structure owing to install on the downside of backup pad 1, and shrouding connection stability is better, is difficult for breaking away from the carriage.

Optionally, the third connecting structure includes a third connecting element and a third connecting groove 5 disposed on the inner side surface of the frame 2, one end of the third connecting element is adapted to be slidably disposed in the third connecting groove 5, and the other end of the third connecting element is adapted to be connected to a floor or a sealing plate.

Referring to fig. 3 and 4, the third connecting structure includes a third connecting member and a third connecting groove 5 provided at an inner side of the frame 2. The length direction of the third connecting slot 5 is the same as the length direction of the frame 2, and in other embodiments, the length direction of the third connecting slot 5 may also be disposed at an angle with the length direction of the frame 2. In this embodiment, third connecting groove 5 is equipped with one, and third connecting groove 5 all slides and is provided with a plurality of third connecting pieces to this is convenient for carry out many places to the shrouding and fixes. In other embodiments, since the length direction of the third connecting groove 5 is disposed at an angle to the length direction of the frame 2, the third connecting groove 5 may be disposed in a plurality, and the plurality of third connecting grooves 5 are disposed at intervals.

Referring to fig. 3 and 4, the third connecting groove 5 is surrounded by two spaced and oppositely disposed third mounting plates 501 on the inner side of the frame 2, the two third mounting plates 501 are sidewalls of the third connecting groove 5, and the inner side of the frame 2 is a bottom wall of the third connecting groove 5. The third mounting plate 501 is disposed perpendicularly to the inner side surface of the frame 2. One end of the third connecting member is slidably disposed between the two third mounting plates 501. The third mounting plate 501 is fixed to the inner side of the frame 2 by welding, thereby improving the integrity of the frame 2 and the third mounting plate 501. In other embodiments, the third connecting slot 5 may also be directly opened on the inner side of the frame 2. The third connecting piece is a third bolt, the head of the third bolt is slidably arranged in the third connecting groove 5, and the head of the third bolt is not easy to separate from the third connecting groove 5. Through threaded connection between third bolt and the shrouding, and be convenient for fix the shrouding on frame 2, and when needing to dismantle the shrouding and change, remove being connected of third bolt and shrouding, and be convenient for take off the shrouding.

Optionally, two third limiting plates 502 are disposed at the third connecting groove 5, the two third limiting plates 502 are respectively disposed on two opposite groove walls of the third connecting groove 5, and the third limiting plate 502 is adapted to limit the third connecting member to be separated from the first connecting groove 3 along the third direction.

Referring to fig. 3 and 4, wherein the third limiting plates 502 are disposed on two opposite groove walls of the third connecting groove 5, in this embodiment, the third limiting plates 502 are disposed on two sides of the third mounting plates 501 facing each other, and the third limiting plates 502 and the third mounting plates 501 are disposed at an angle, preferably, the third limiting plates 502 are disposed perpendicular to the third mounting plates 501. The third limiting plate 502 is bent from the third mounting plate 501 and is integrally formed, and in other embodiments, the third limiting plate 502 and the third mounting plate 501 may also be fixed by welding. When the third connecting member, i.e. the third bolt, slides in the third connecting groove 5, the third limiting plate 502 abuts against the head of the third bolt, so as to limit the third bolt from disengaging from the third connecting groove 5. When the third bolt slides in the third connecting groove 5, under the action of the third limiting plate 502, the third bolt is not easy to be separated from the third connecting groove 5 from a third direction, which is a direction perpendicular to the third limiting plate 502 and is an X-axis direction in the drawing. When the third bolt is installed into the third coupling groove 5, the third bolt is slid into the third coupling groove 5 from the end of the third installation plate 501, so that the number of the third bolts in the third coupling groove 5 is increased.

With such an arrangement, when the third bolt slides in the third connecting groove 5, the head of the third bolt abuts against the third limiting plate 502, and at this time, the third bolt is not easily separated from the third connecting groove 5. When the sealing plate is fixed, in the process of screwing the third bolt, the head of the third bolt gradually abuts against the third limiting plate 502, so that the sealing plate is fixed with the frame 2.

Optionally, the third limiting plate 502 is provided with at least one third separating groove 503, the third separating groove 503 is adapted to divide the third limiting plate 502 into multiple sections, and one end of the third connecting member is adapted to enter the third connecting groove 5 through the third separating groove 503.

Referring to fig. 3 and 4, in which a plurality of third partition grooves 503 are provided, the third partition grooves 503 divide the third restriction plate 502 into a plurality of sections, and the head of the third bolt is easily passed through the third partition grooves 503, and the third bolt can be moved into or out of the third connection groove 5 from the third partition grooves 503. In this embodiment, the third partition groove 503 divides the third limiting plate 502 into a plurality of stages, and also divides the third mounting plate 501 into a plurality of stages.

Set up like this, during the installation shrouding, confirm the position of third bolt according to the hookup location of shrouding, when placing the third bolt according to the mounted position, the third bolt can be followed a plurality of third separating groove 503 and got into third connecting groove 5 in, has shortened the sliding distance of third bolt in third connecting groove 5, has improved the time that the third bolt location was placed to the efficiency of this shrouding installation is promoted.

Referring to fig. 1 and 3, at least one escape hole 6 is formed in the support plate 1, and in this embodiment, one escape hole 6 is formed. All be equipped with leading wheel 7 in backup pad 1's downside four corners department, leading wheel 7 all fixes the downside at backup pad 1 through the mount pad, and leading wheel 7 rotates to be installed on the mount pad, and passes through bolted connection between mount pad and the backup pad 1.

Another embodiment of the utility model provides a suspension type rail train, including as above chassis structure.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Without departing from the spirit and scope of the present disclosure, those skilled in the art can make various changes and modifications, which will fall into the scope of the present disclosure.

Claims (10)

1. The utility model provides an underframe structure for connect floor and shrouding, its characterized in that, includes backup pad (1), first connection structure and second connection structure, first connection structure include first connecting piece with set up in first spread groove (3) on backup pad (1), the one end of first connecting piece slide set up in first spread groove (3), the other end of first connecting piece be suitable for with the floor is connected, second connection structure include the second connecting piece with set up in second spread groove (4) on backup pad (1), the one end of second connecting piece slide set up in second spread groove (4), the other end of second connecting piece be suitable for with the shrouding is connected.

2. The undercarriage structure according to claim 1, wherein two first limiting plates (302) are disposed at the first connecting slot (3), the two first limiting plates (302) are disposed on two opposite slot walls of the first connecting slot (3), and the first limiting plates (302) are adapted to limit the first connecting member to be separated from the first connecting slot (3) along a first direction.

3. The undercarriage structure according to claim 2, wherein the first limiting plate (302) is provided with at least one first separating groove (303), the first separating groove (303) is adapted to divide the first limiting plate (302) into a plurality of segments, and one end of the first connecting member is adapted to enter the first connecting groove (3) through the first separating groove (303).

4. The undercarriage structure according to claim 1, wherein two second limiting plates (402) are disposed at the second connecting slot (4), two second limiting plates (402) are disposed on two opposite slot walls of the second connecting slot (4), respectively, and the second limiting plate (402) is adapted to limit the detachment of the first connecting member from the second connecting slot (4) along the second direction.

5. The chassis structure according to claim 4, characterized in that the second limiting plate (402) is provided with at least one second separating groove (403), the second separating groove (403) is adapted to divide the second limiting plate (402) into multiple segments, and one end of the second connecting element is adapted to enter the second connecting groove (4) through the second separating groove (403).

6. Undercarriage structure according to claim 1, further comprising a frame (2) and third connecting means, wherein the support plate (1) is adapted to be connected to the frame (2), wherein the third connecting means are provided on an inner side of the frame (2), and wherein the third connecting means are adapted to be connected to the floor panel and/or the closing panel.

7. The base frame structure according to claim 6, characterized in that said third connecting structure comprises a third connecting member and a third connecting groove (5) provided on the inner side of said frame (2), one end of said third connecting member being adapted to be slidably arranged in said third connecting groove (5), the other end of said third connecting member being adapted to be connected to said floor panel or said closing panel.

8. The chassis structure according to claim 7, wherein two third limiting plates (502) are disposed at the third connecting groove (5), two third limiting plates (502) are disposed on two opposite groove walls of the third connecting groove (5), respectively, and the third limiting plates (502) are adapted to limit the third connecting member from being separated from the first connecting groove (3) along a third direction.

9. The chassis structure according to claim 8, characterized in that the third limiting plate (502) is provided with at least one third separating groove (503), the third separating groove (503) is adapted to divide the third limiting plate (502) into multiple segments, and one end of the third connecting element is adapted to enter the third connecting groove (5) through the third separating groove (503).

10. A suspended track train comprising an undercarriage structure according to any one of claims 1 to 9.

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