AU2023262389A1 - Sliding seat mechanism, guide device, open freight car, and freight train - Google Patents

Abstract

The present application belongs to the technical field of freight trains. Disclosed are a sliding seat mechanism, a guide device, an open freight car and a freight train. The sliding seat mechanism comprises a plurality of sliding blocks (2-1) sequentially connected in the axial direction of a sliding rail (1). The opposite side faces of the two adjacent sliding blocks (2-1) are each provided with a rotating portion (2-15), and the two rotating portions (2-15) are rotatably connected to each other. Each sliding block (2-1) is internally provided with a sliding portion, which is in sliding fit with the sliding rail (1). At least one of the opposite side faces of the two adjacent sliding blocks (2-1) is provided with a gap portion (2-13), so as to form a corner space (2-14).

Description

SLIDING SEAT MECHANISM, GUIDE DEVICE, OPEN WAGON AND FREIGHT TRAIN CROSS-REFERENCE TO RELATED APPLICATIONS

[00011 This application claims priority to the Chinese patent application No. 202210459247.4

filed on April 27, 2022 and entitled "Sliding seat mechanism, guide device, open wagon and

freight train", the disclosure of which is hereby incorporated by reference in its entirety.

TECHNICAL FIELD

[00021 The disclosure relates to the technical field of freight trains, and in particular to a sliding

seat mechanism, a guide device, an open wagon and a freight train.

BACKGROUND

[00031 In the last decade or so, in order to prevent the cargoes loaded in freight wagons from

scattering and flying or from being exposed to rain, the open wagons have begun to be covered

with covering curtains.

[00041 The open wagons usually are disposed with two covering curtains on the top, i.e. one

covering curtain at the front end of the top and one covering curtain at the rear end of the top. A

rear end of the front end covering curtain and a front end of the rear end covering curtain are called

docking ends. When the docking end of the front end covering curtain and the docking end of the

rear end covering curtain are brought together toward each other, the open wagon is covered.

When the docking end of the front end covering curtain and the docking end of the rear end

covering curtain are separated away from each other, the open wagon is opened.

[00051 However, in the prior art, the docking ends of the covering curtains can just stay on the

slide rails at the top surfaces of two ends, resulting in incomplete separation of the front end

covering curtain and the rear end covering curtain, which not only affects the loading and

unloading of cargoes, but also makes the covering curtains more susceptible to damage during the

loading and unloading.

SUMMARY

[00061 The disclosure provides a sliding seat mechanism, a guide device, an open wagon and a

freight train. By utilizing one or more embodiments of the disclosure, it solves the problem that the

docking ends of the covering curtain can only stay on the slide rails at both ends of the top surface,

resulting in incomplete separation of the front end covering curtain and the rear end covering curtain, which not only affects the loading and unloading of cargoes, but also makes the covering curtains more susceptible to damage during the loading and unloading.

[0007] In an aspect of the disclosure, a sliding seat mechanism is disposed for sliding on a slide

rail. The sliding seat mechanism includes a plurality of slide blocks connected in sequence along

an axial direction of the slide rail. opposite sides of two adjacent slide blocks are each disposed

with rotating portions, and two rotating portions are rotatably connected; the slide blocks are

disposed with a sliding portion therein for slidably fitting with the slide rail; and a notch portion is

disposed on at least one of the opposite sides of the two adjacent slide blocks to form a corner

space.

[00081 In another aspect of the disclosure, a guide device for covering curtains is also provided,

including: a slide rail and a sliding seat mechanism; the slide rail comprises a straight portion and

a curved portion connected to the straight portion; the plurality of slide blocks of the sliding seat

mechanism are slidably disposed on the straight portion and the curved portion, and a first slide

block of the plurality of slide blocks is connected to the covering curtain.

[00091 In another aspect of the disclosure, an open wagon is also provided, including: a wagon

body; two covering curtains, disposed oppositely on a top of the wagon body; and the guide device

for the covering curtain; two slide rails of the guide device are disposed oppositely on the top of

the wagon body; two sliding seat mechanisms of the guide device are respectively disposed at

docking ends of the two covering curtains; and the two sliding seat mechanisms are slidably

disposed on the two slide rails respectively to drive the two covering curtains to be docked or

folded.

[00101 In another aspect of the disclosure, a freight train is also provided, including at least one of

the open wagons.

BRIEF DESCRIPTION OF DRAWINGS

[00111 In order to more clearly illustrate the technical solutions in the embodiments of this

disclosure, a brief introduction will be made below to the accompanying drawings needed to be

used in the description of the embodiments. Obviously, the accompanying drawings in the

following description illustrate some embodiments of this disclosure.

[00121 FIG. 1 shows a schematic structural diagram of a sliding seat mechanism according to

some embodiments of the disclosure;

[00131 FIG. 2 shows an exploded schematic diagram of the sliding seat mechanism in FIG. 1;

[00141 FIG. 3 shows a schematic diagram of a guide device for a covering curtain in a first

movement state according to some embodiments of the disclosure;

[00151 FIG. 4 shows a schematic diagram of the guide device for the covering curtain in a second

movement state according to some embodiments of the disclosure;

[00161 FIG. 5 shows a side view of the guide device for the covering curtain in FIG. 4;

[00171 FIG. 6 shows a schematic diagram of the covering curtains of an open wagon in a brought

together state according to some embodiments of the disclosure;

[00181 FIG. 7 shows a schematic diagram of the covering curtains of the open wagon in a folded

state according to some embodiments of the disclosure; and

[00191 FIG. 8 shows an enlarged schematic diagram of a portion indicated by A in FIG. 7.

[00201 Reference numerals:

[0021] 1, slide rail; 1-1, straight portion; 1-2, curved portion; 1-21, top traveling surface; 1-22,

bottom limiting surface; 1-11, support plate; 1-12, connecting plate; 2, sliding seat mechanism;

2-1, slide block; 2-11, flat portion; 2-12, notch portion; 2-13, comer space; 2-14, rotating portion;

2-15, articulated shaft; 3, covering curtain; 4, traveling wheel; 5, limiting wheel; 6, flap; 7, driving

mechanism; 7-1, hook; 7-11, hooking rod; 7-12, toggle column; 7-121, push-couple portion

7-122, push-away portion; 7-123, receiving portion; 7-2, lever; 8, wagon body.

DESCRIPTION OF EMBODIMENTS

[00221 The technical solutions in the embodiments of this disclosure will be clearly and

completely described below with reference to the accompanying drawings in the embodiments of

this disclosure. Obviously, the described embodiments are only some embodiments of this

disclosure, rather than all embodiments. Based on the embodiments in this disclosure, all other

embodiments obtained by those skilled in the art without creative efforts fall within the scope of

protection of this disclosure.

[00231 It should be noted that all directional indications in the embodiments of this disclosure are

only used to explain relative positional relationships, movement conditions and so on among

various components in a specific posture. If the specific posture changes, the directional

indications also change accordingly.

[0024] It should be noted that all directional indications in the embodiments of this disclosure are

only used to explain relative positional relationships, movement conditions and so on among various components in a specific posture. If the specific posture changes, the directional indications also change accordingly.

[0025] In addition, descriptions such as "first", "second" and so on in this disclosure are for

descriptive purposes only and cannot be understood as indicating or implying the relative

importance or implicitly indicating the number of indicated technical features. Therefore, features

defined as "first" and "second" may explicitly or implicitly include at least one of these features. In

addition, the technical solutions in various embodiments can be combined with each other, but

they must be based on the realization by those skilled in the art. When the combination of technical

solutions is contradictory or cannot be realized, it should be considered that such a combination of

technical solutions does not exist, nor is it within the protection scope sought by this disclosure.

[00261 The disclosure is described below in conjunction with the accompanying drawings and

with reference to the embodiments.

[00271 Referring to FIG.1 and FIG. 2, a sliding seat mechanism is provided according to an

embodiment of the disclosure for sliding on a slide rail 1. The sliding seat mechanism 2 includes a

plurality of slide blocks 2-1 connected in sequence along an axial direction of the slide rail 1.

Opposite sides of two adjacent slide blocks 2-1 are each disposed with rotating portions 2-14, and

two rotating portions 2-14 are rotatably connected. The slide block 2-1 is disposed with a sliding

portion therein for slidably fitting with the slide rail 1. A notch portion 2-12 is disposed on at least

one of the opposite sides of the two adjacent slide blocks 2-1 to form a corner space 2-13.

[00281 In some embodiments, since the sliding seat mechanism 2 includes a plurality of slide

blocks 2-1 connected in sequence along the axial direction of the slide rail 1; the opposite sides of

two adjacent slide blocks 2-1 are each disposed with rotating portions 2-14, and the two rotating

portions 2-14 are rotatably connected; the slide block 2-1 is disposed with the sliding portion

therein for slidably fitting with the slide rail 1; and the notch portion 2-12 is disposed on at least

one of the opposite sides of the two adjacent slide blocks 2-1 to form a corner space 2-13,

therefore, when covering curtains 3 are being brought together or folded, the slide block 2-1 slides

on the slide rail 1, and when the plurality of slide blocks 2-1 pass through a curved portion 1-2 of

the slide rail 1, the rotating portions 2-14 of the two adjacent slide blocks 2-1 rotate, and the notch

portion 2-12 of one of the two adjacent slide blocks 2-1 acts in an opposite direction in the corner

space 2-13, so that the slide block 2-1 can pass through the curved portion 1-2 of the slide rail 1. In

this way, when the covering curtains 3 are being folded, the covering curtains 3 can be driven completely away from an end of a top of the wagon body, which can ensure that the covering curtains 3 when folded completely exit the end of the top of the wagon body, thereby avoiding a damage to the covering curtains 3 during loading and unloading cargoes, ensuring a safety of the covering curtains 3, and facilitating the loading and unloading of cargoes.

[0029] In some embodiments, the sliding portion includes a traveling wheel 4 rotatably disposed

and two limiting wheels 5 oppositely disposed. A first mounting space is disposed between the

traveling wheel 4 and the two limiting wheels 5 for mounting the slide rail 1, and/or a second

mounting space is disposed between the two limiting wheels 5 for mounting the slide rail 1.

[00301 In some embodiments, a traveling wheel 4 and two limiting wheels 5 are rotatably disposed

in the slide block 2-1. In this embodiment, the traveling wheel 4 may be mounted in the slide block

2-1 through a rotating shaft, and the two limiting wheels 5 may also be mounted in the sliding

block 2-1 through a rotating shaft. The traveling wheel 4 and the two limiting wheels 5 all abut

against the slide rail 1, so that the traveling wheel 4 and the two limiting wheels 5 can act smoothly

on the sliding rail 1.

[00311 In some embodiments, a spacing distance between the traveling wheel 4 and the two

limiting wheels 5 matches a thickness of a support plate 1-11 to ensure that the slide block 2-1

travels steadily on the slide rail 1.

[0032] In some embodiments, a height of the traveling wheel 4 is greater than a height of the two

limiting wheels 5 to ensure that the slide block 2-1 can act smoothly.

[00331 In some embodiments, there is only one traveling wheel 4 in the slide block 2-1, so that a

single slide block 2-1 has a certain degree of freedom to tilt and rotate on the slide rail 1 around a

contact line between the traveling wheel 4 and the slide rail 1, and therefore the single slide block

2-1 has an ability to pass through the curved portion 1-2 of the slide rail 1.

[0034] In some embodiments, the limiting wheel 5 form a limiting assembly. A first slide block

and a last slide block in the plurality of slide blocks 2-1 each are only disposed with one limiting

assembly, and remaining slide blocks in the plurality of slide blocks 2-1 may be disposed with

several limiting assemblies. The remaining slide blocks in the plurality of slide blocks 2-1 may

also be disposed with only one limiting assembly, so that each slide block 2-1 has the ability to

pass through the curved portion 1-2.

[00351 In some embodiments, a traveling wheel 4 of a first slide block in the plurality of slide

blocks 2-1 is closer to a first end of the plurality of slide blocks 2-1 than a limiting wheel 5 of the first slide block. That is, a spacing distance between the traveling wheel 4 of the first slide block in the plurality of slide blocks 2-1 and the covering curtain 3 is smaller than a spacing distance between the limiting wheel 5 of the first slide block 2-1 in the plurality of slide blocks 2-1 and covering curtain 3, so that when the first slide block 2-1 enters the curved portion 1-2, the traveling wheel 4 of the first slide block 2-1 can travel longer than the limiting wheel 5 of the first slide block 2-1 to adapt to a fact that a length of a top traveling surface 1-21 of the curved portion 1-2 of the slide rail 1 is greater than a length of a bottom limiting surface 1-22 of the curved portion 1-2 of the slide rail 1, and therefore the first slide block along a folding direction is ensured to travel smoothly.

[00361 In some embodiments, a traveling wheel 4 of a last slide block in the plurality of slide blocks 2-1 is closer to a second end of the plurality of slide blocks 2-1 than a limiting wheel 5 of the last slide block. That is, a spacing distance between the traveling wheel 4 of the last slide block in the plurality of slide blocks 2-1 and the covering curtain 3 is larger than a spacing distance between the limiting wheel 5 of the last slide block 2-1 in the plurality of slide blocks 2-1 and covering curtain 3, so that when the last slide block 2-1 enters a straight portion 1-1 along a brought together direction, the traveling wheel 4 of the last slide block 2-1 can travel longer than the limiting wheel 5 of the last slide block 2-1 to adapt to a fact that a length of a top traveling surface 1-21 of the curved portion 1-2 of the slide rail 1 is greater than a length of a bottom limiting surface 1-22 of the curved portion 1-2 of the slide rail 1, and therefore the last slide block along the brought together direction is ensured to travel smoothly.

[0037] In some embodiments, the opposite sides of the two adjacent slide blocks 2-1 are both disposed with flat portions 2-11, and two flat portions 2-11 can abut against one another. The rotating portion 2-14 is disposed between the flat portion 2-11 and the notch portion 2-12.

[00381 In some embodiments, when the covering curtains 3 are being brought together or folded, and the plurality of slide blocks 2-1 pass through the straight portion 1-1 of the slide rail 1, the flat portions 2-11 of the two adjacent slide blocks 2-1 abut against with one another, so that the slide block 2-1 is restricted from tilting and will not tilt, thereby ensuring that the plurality of slide blocks 2-1 act steadily in the straight portion 1-1. When the plurality of slide blocks 2-1 pass through the curved portion 1-2 of the slide rail 1, the rotating portions 2-14 of the two adjacent slide blocks 2-1 rotate to separate the flat portions 2-11 of the two adjacent slide blocks 2-1, making it easier for the slide blocks 2-1 to act on the curved portion 1-2 of the slide rail 1.

[00391 In some embodiments, the flat portion 2-11 is disposed on a top of a side of the slide block

2-1. The rotating portion 2-14 is disposed on a middle portion of a side of the slide block 2-1. The

notch portion 2-12 is disposed on a bottom of a side of the slide block 2-1.

[0040] In some embodiments, the rotating portions 2-14 of the two adjacent slide blocks 2-1 are

hinged through the articulated shaft 2-15 to ensure that when the slide blocks 2-1 pass through the

curved portion 1-2, the two adjacent slide blocks 2-1 can rotate relative to each other.

[0041] In some embodiments, a spacing distance between an end of the notch portion 2-12 facing

the rotating portion 2-14 and another slide block is smaller than a spacing distance between an end

of the notch portion 2-12 facing away from the rotating portion 2-14 and the another slide block, to

form a corner space 2-13 with a narrow top and a wide bottom, so that two adjacent slide blocks

2-1 can rotate downward around the articulated shaft 2-15, thereby ensuring that the plurality of

slide blocks 2-1 can act on the curved portion 1-2.

[0042] In some embodiments, the number of slide blocks 2-1 is three. The plurality of slide blocks

2-1 includes: a first slide block, a second slide block and a third slide block. The second slide block

is disposed between the first slide block and the third slide block. If the second slide block tends to

tilt in the folding direction due to a force subjected, the first slide block inevitably flips upward due

to a manner of hinged connection. Since a flat portion on an end surface of the second slide block

along the folding direction abuts against a flat portion of the adjacent first slide block, the first

slide block cannot flip upward, and thus the second slide block is restricted from tilting in the

folding direction and will not tilt, thereby ensuring that the plurality of slide blocks act steadily on

the straight portion 1-1. If the second slide block tends to tilt in the brought together direction due

to a force subjected, the third slide block inevitably flips upward due to a manner of hinged

connection. Since a flat portion on an end surface of the second slide block along the brought

together direction abuts against a flat portion of the adjacent third slide block, the third slide block

cannot flip upward, and thus the second slide block is restricted from tilting in the brought together

direction and will not tilt, thereby ensuring that the plurality of slide blocks act steadily on the

straight portion 1-1.

[00431 In some embodiments, the notch portion 2-12 may be disposed on the first slide block and

the third slide block. The notch portion 2-12 may also be disposed on the second slide block.

Alternatively, the first slide block, the second slide block and the third slide block may all disposed

with notch portions 2-12 thereon. Therefore, a corner space 2-13 with narrow top and wide bottom is formed, so that the first slide block and the second slide block can rotate downward around the articulated shaft 2-15, thereby ensuring that the first slide block and the second slide block can travel on the curved portion 1-2.

[00441 Referring to FIG. 3, FIG. 4 and FIG. 5, based on the same concept, the disclosure also

proposes a guide device for a covering curtain. The guide device for the covering curtain adopts the sliding seat mechanism. For the structural details of the sliding seat mechanism, reference can be made to the above embodiments. The sliding seat mechanism, since adopting all the technical solutions of all the above-mentioned embodiments, has at least all the advantageous effects brought by the technical solutions of the above-mentioned embodiments, which will not be described again here.

[0045] In some embodiments, the slide rail 1 includes: a straight portion 1-1 and a curved portion

1-2 connected to the straight portion 1-1. The plurality of slide blocks 2-1 of the sliding seat mechanism 2 each may be slidably disposed on the straight portion 1-1 and the curved portion 1-2, and a first slide block of the plurality of slide blocks 2-1 is connected to the covering curtain 3.

[00461 In some embodiments, both the straight portion 1-1 and the curved portion 1-2 include: a support plate 1-11 and a connecting plate 1-12. The support plate 1-11 is fixedly connected to a top of the connecting plate 1-12. A width of the support plate 1-11 is greater than a width of the connecting plate 1-12, so that a cross-sectional shape of the slide rail 1 is T-shaped to support the plurality of slide blocks 2-1. The slide blocks 2-1 can slide on the support plate 1-11.

[0047] In some embodiments, the support plate 1-11 is disposed between the traveling wheel 4 and the two limiting wheels 5. The connecting plate 1-12 is disposed between the two limiting wheels 5. The two limiting wheels 5 limit the slide block 2-1 to prevent the slide block 2-1 from displacing on the support plate 1-11.

[00481 In some embodiments, the guide device further includes a driving mechanism 7. The

driving mechanism 7 includes: a hook 7-1 and a liftable lever 7-2. The hook 7-1 is connected to the slide block 2-1 and can abut against the lever 7-2. In this embodiment, the hook 7-1 is connected to a slide block at middle among the plurality of slide blocks 2-1 to avoid interfering with actions of the first slide block and the last slide block on the curved portion 1-2. In some embodiments, the hook 7-1 is L-shaped.

[0049] In some embodiments, a liftable lever 7-2 is disposed above tracks on site. The hook 7-1 is toggled by the lever 7-2 with a traveling of a wagon body to realize a forward sliding or backward sliding of the covering curtain 3.

[00501 In some embodiments, the hook 7-1 includes: a hooking rod 7-11 and a toggle column

7-12. The hooking rod 7-11 is connected to the slide block 2-1. In this embodiment, the hooking

rod 7-11 extends toward the first slide block among the plurality of slide blocks 2-1. The toggle

column 7-12 is connected to the hooking rod 7-11, and is disposed at an angle with the hooking rod

7-11. In this embodiment, the toggle column 7-12 is at 900 to the hooking rod 7-11. In some

embodiments, the toggle column 7-12 has a rectangular cross section.

[00511 In some embodiments, the toggle column 7-12 includes: a push-couple portion 7-121, a

push-away portion 7-122, and a receiving portion 7-123. A first end of the receiving portion 7-123

is connected to the push-couple portion 7-121, and a second end of the receiving portion 7-123 is

connected to the push-away portion 7-122. A spacing distance between the first end of the

receiving portion and the slide rail 1 is less than a spacing distance between the second end of the

receiving portion 7-123 and the slide rail 1. In this embodiment, the push-couple portion 7-121

faces the covering curtain 3. The push-away portion 7-122 faces away from the covering curtain 3.

The receiving portion 7-123 is at 450 to the push-away portion 7-122 of the toggle column 7-12.

[0052] In some embodiments, an end of the lever 7-2 facing the hooking rod 7-11 is rotatably

disposed with a pulley 7-3, to facilitate the lever 7-2 to gradually slide from the receiving portion

7-123 of the toggle column 7-12 to the push-couple portion 7-121 of the toggle column 7-12.

[00531 In some embodiments, when the covering curtains 3 are to be brought together, the wagon

body 8 acts on the tracks until it reaches the lever 7-2. When a normal line of the slide block at

middle among the plurality of slide blocks 2-1 reaches an angle of 45 degrees with a horizontal

plane, the wagon body 8 stops, so that the receiving portion 7-123 is maintained to be vertical to

the horizontal plane and the liftable lever 7-2 descends. It is convenient for the receiving portion

7-123 to be hooked by vertically suspended lever 7-2. As the lever 7-2 continues to descend, the

plurality of slide blocks 2-1 (towing an entire covering curtain 3) pass through the curved portion

1-2 and enter a straight portion 1-1 under a thrust exerted by the lever 7-2 toward the receiving

portion 7-123. During a process of the slide block 2-1 entering the straight portion 2-1 from the

curved portion 2-2, the lever 7-12 gradually rises and acts in the brought together direction, so that

the lever 7-2 gradually slides from the receiving portion 7-123 to the push-couple portion 7-121,

and in turn applies thrust to the push-couple portion 7-121 until the slide block 2-1 enters the

straight portion 1-1. Then the wagon body 8 continues to act on the tracks, so that the lever 7-2 moves relative to the push-couple portion 7-121 to push the push-couple portion 7-121. The push-couple portion 7-121 drives the slide block 2-1 to act on the straight portion 1-1 through the hooking rod 7-11. The slide block 2-1 drives the covering curtain 3 to be brought together. When the covering curtain 3 is brought together, the lever 7-2 rises to separate from the push-couple portion 7-121 to avoid interfering with an action of the wagon body 8. When the covering curtains

3 are to be folded, the wagon body 8 acts on the tracks until it reaches the lever 7-2, to the lever 7-2

to abut against the push-away portion 7-122. Then, the wagon body 8 continues to act on the

tracks, to move the lever 7-2 relative to the push-couple portion 7-121 so as to push the

push-couple portion 7-122. In turn the push-couple portion 7-122 drives the slide block 2-1 to act

on the straight portion 1-1 through the hooking rod 7-11 until the slide block 2-1 enters the curved

portion 1-2, and then the lever 7-2 separates from the push-couple portion 7-121, thereby realizing

a folding of the covering curtains 3.

[00541 Referring to FIG. 6, FIG. 7 and FIG. 8, based on the same concept, the disclosure also

proposes an open wagon in which the guide device for the covering curtain is adopted. For the

structural details of the guide device for the covering curtain, a reference can be made to the

above-mentioned embodiments. The guide device for the covering curtain, since adopting all the

technical solutions of all the above-mentioned embodiments, has at least all the advantageous

effects brought by the technical solutions of the above-mentioned embodiments, which will not be

described again here.

[00551 In some embodiments, the open wagon includes a wagon body 8 and two covering curtains

3 disposed opposite to each other on a top of the wagon body 8. Two slide rails 1 of the guide

device are disposed oppositely on the top of the wagon body 8. Two sliding seat mechanisms 2 of

the guide device are respectively disposed at docking ends of the two covering curtains 3. In some

embodiments, the two sliding seat mechanisms 2 are slidably disposed on the two slide rails 1

respectively to drive the two covering curtains 3 to be docked or folded.

[00561 In some embodiments, when the two covering curtains 3 are being brought together, that is,

the two covering curtains 3 need to act toward each other, the plurality of slide blocks 2-1 of the

sliding seat mechanism 2 enter the straight portion 1-1 from the curved portion 1-2 of the slide rail

1, until ends of the two covering curtains 3 are docked together. When the two covering curtains 3

are being folded, the plurality of slide blocks 2-1 of the sliding seat mechanism 2 enter the curved

portion 1-2 from the straight portion 1-1 of the slide rail 1, thereby realizing the folding of the covering curtains 3. The covering curtains 3 completely leaves an end of a top of the wagon body, thus it can ensure that the covering curtains 3 when folded completely exit the end of the top of the wagon body, thereby avoiding damage to the covering curtains 3 when loading and unloading cargoes, ensuring a safety of the covering curtains 3, and facilitating the loading and unloading of cargoes.

[0057] In some embodiments, an end of the covering curtain 3 facing the sliding seat mechanism 2

is disposed with a flap 6 which is flippable. In this embodiment, the flap 6 can be hingedly

connected to the covering curtain 3. In some embodiments, the flap 6 can cover positions where

the covering curtain 3 cannot cover, and therefore the top of the wagon body can be completely

covered.

[00581 In some embodiments, an angle at which the flap 6 is flipped toward the folding direction is

less than 90 degrees with a horizontal plane as a reference. When the covering curtains 3 are being

folded, the flap 6 forms an elevation angle relative to the horizontal plane after the flap 6 enters the

curved portion 1-2 with the last slide block 2-1, and the flap 6 still has an inertia when the last slide

block 2-1 slides away from the straight portion 1-1 and tends to decelerate and stop, so that the flap

6 can automatically flip under an action of the elevation angle and the inertia. When the covering

curtains 3 are being brought together, the flap 6 forms a depression angle relative to the horizontal

plane after the flap 6 enters the straight portion 1-1 with the last slide block 2-1, and thus the flap 6,

under an action of gravity thereof, will flip to cover positions that can not be covered by the

covering curtain 3, so that the top of the wagon body is completely covered.

[00591 In some embodiments, since the toggle column 7-12 should rest in a position where it is

easy for the lever 7-2 to hook a last slide block in the plurality of sliders 2-1 which still does not

completely slide away from the top of the wagon body when the last slide block stops moving, the

last slide block 2-1 which is still at the top of the wagon body will prevent loading apparatuses

from operating. It will be easier for the loading apparatuses to operate by disposing a flap 6

hingedly connected to the covering curtain 3 at an end of a first slide block 2-1 and flipping the flap

6 in the direction of folding upon the covering curtain 3 is folded.

[00601 Based on the same concept, the disclosure also proposes a freight train that adopts the open

wagon. For the structural details of the open wagon, reference can be made to the

above-mentioned embodiments. The open wagon, since adopting all the technical solutions of all

the above-mentioned embodiments, has at least all the advantageous effects brought by the technical solutions of the above-mentioned embodiments, which will not be described again here.

[00611 In the description of this disclosure, it needs to be understood that the directions and

positions or the positional relationships indicated by the terms "center", "longitudinal",

"transverse", "length", "width", "thickness", ''upper", "lower", "front", "back", 'left", 'right",

"vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise"

and so on are based on the orientations or positional relationships shown in the accompanying

drawings, which are only for the convenience of describing this disclosure and simplifying the

description, and does 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 cannot be

understood as a limitation on this disclosure.

[0062] In the description of the present invention, unless otherwise expressly stated and limited,

"above" or "below" a first feature to a second feature may include the first and second features

being in direct contact, or may include the first and second features being not in direct contact but

being in contact through another feature between them. Furthermore, a first feature is "over", "on a

top of' and "above" a second feature includes the first feature being directly above and diagonally

above the second feature, or simply indicates that the first feature is higher in level than the second

feature. The first feature is "below", "under" and "beneath" the second feature includes the first

feature being directly below and diagonally below the second feature, or simply indicates that the

first feature is lower in level than the second feature.

[00631 In the description of this specification, the description with reference to the terms "one

embodiment", "some embodiments", "an example", "specific examples" or "some examples" or

the like indicates that specific features, structures, materials or characteristics described in

connection with the embodiment or example are included in at least one embodiment or example

of this disclosure. In this specification, the schematic expressions of the above terms are not

necessarily directed to the same embodiment or example. Furthermore, the specific features,

structures, materials or characteristics described may be combined in any suitable manner in any

one or more embodiments or examples. Furthermore, those skilled in the art may incorporate and

juncture the different embodiments or examples described in this specification..

[00641 Although preferred embodiments of this disclosure have been described, those skilled in

the art will be able to make additional changes and modifications to these embodiments once the

basic inventive concepts are understood. Therefore, it is intended that the appended claims be construed to include the preferred embodiments and all changes and modifications that fall within the scope of this disclosure.

[00651 Obviously, those skilled in the art can make various changes and modifications to this

disclosure without departing from the spirit and scope of this disclosure. In this way, if these

modifications and variations of this disclosure fall within the scope of the claims of this disclosure

and equivalent technologies, this disclosure is also intended to include these modifications and

variations.

Claims (12)

1. i W17124AU I120 1 V-4 /l

   WHAT IS CLAIMED IS: 1. A sliding seat mechanism for sliding on a slide rail, comprising: a plurality of slide

   blocks connected in sequence along an axial direction of the slide rail;

   opposite sides of two adjacent slide blocks are each disposed with rotating portions, and

   two rotating portions are rotatably connected;

   the slide blocks are disposed with a sliding portion therein for slidably fitting with the slide

   rail; and

   a notch portion is disposed on at least one of the opposite sides of the two adjacent slide

   blocks to form a comer space.
2. 2. The sliding seat mechanism according to claim 1, wherein the sliding portion comprises

   a traveling wheel rotatably disposed and two limiting wheels oppositely disposed; a first

   mounting space is disposed between the traveling wheel and the two limiting wheels for

   mounting the slide rail, and/or a second mounting space is disposed between the two limiting

   wheels for mounting the slide rail.
3. 3. The sliding seat mechanism according to claim 2, wherein a traveling wheel of a first

   slide block in the plurality of slide blocks is closer to a first end of the plurality of slide blocks

   than a limiting wheel of the first slide block; a traveling wheel of a last slide block in the

   plurality of slide blocks is closer to a second end of the plurality of slide blocks than a limiting

   wheel of the last slide block.
4. 4. The sliding seat mechanism according to any one of claims I to 3, wherein the opposite

   sides of the two adjacent slide blocks are both disposed with flat portions, two flat portions

   abutting against one another; the rotating portion is disposed between the flat portion and the

   notch portion.
5. 5. A guide device for covering curtain, comprising: a slide rail and the sliding seat

   mechanism according to any one of claims 1 to 4;

   the slide rail comprises a straight portion and a curved portion connected to the straight

   portion;

   the plurality of slide blocks of the sliding seat mechanism are slidably disposed on the

   straight portion and the curved portion, and a first slide block of the plurality of slide blocks is

   connected to the covering curtain.
6. 6. The guide device for the covering curtain according to claim 5, wherein the plurality of

   slide blocks of the sliding seat mechanism are slidably disposed on the straight portion and the i WtI24AU I120 1 V-4 /lt curved portion, and a first slide block of the plurality of slide blocks is connected to the covering curtain; a support plate is fixedly connected to a top of a connecting plate, and a width of the support plate is greater than a width of the connecting plate.
7. 7. The guide device for the covering curtain according to claim 5, wherein the guide device further comprises a driving mechanism; the driving mechanism comprises a hook and a liftable lever; the hook is connected to the slide block and abuts against the lever.
8. 8. The guide device for the covering curtain according to claim 7, wherein the hook comprises a hooking rod and a toggle column; the hooking rod is connected to the slide block; the toggle column is connected to the hooking rod, and is disposed at an angle with the hooking rod.
9. 9. The guide device for the covering curtain according to claim 8, wherein the toggle column comprises: a push-couple portion, a push-away portion and a receiving portion; a first end of the receiving portion is connected to the push-couple portion; a second end of the receiving portion is connected to the push-away portion; a spacing distance between the first end of the receiving portion and the slide rail is less than a spacing distance between the second end of the receiving portion and the slide rail.
10. 10. An open wagon, comprising: a wagon body; two covering curtains, disposed oppositely on a top of the wagon body; and the guide device for the covering curtain according to any one of claims 5 to 9, wherein two slide rails of the guide device are disposed oppositely on the top of the wagon body; two sliding seat mechanisms of the guide device are respectively disposed at docking ends of the two covering curtains; wherein, the two sliding seat mechanisms are slidably disposed on the two slide rails respectively to drive the two covering curtains to be docked or folded.
11. 11. The open wagon according to claim 10, wherein an end of the covering curtain facing the sliding seat mechanism is disposed with a flap which is flippable.
12. 12. A freight train, comprising at least one open wagon according to claim 10 or 11.