CN212535521U - Walk wheel subassembly, door and side door - Google Patents

Abstract

The present disclosure relates to a traveling wheel assembly, a door and a side door, wherein the traveling wheel assembly comprises a roller, a shaft core, a traveling wheel mounting frame and a traveling wheel fixing plate; the roller is rotatably arranged on the travelling wheel mounting frame through a roller shaft arranged along a first direction; the travelling wheel mounting frame is rotatably connected with the travelling wheel fixing plate through the shaft core arranged along a second direction, and the second direction is perpendicular to the first direction. The embodiment provided by the disclosure can automatically adjust the sliding direction to guide the door body to rotate laterally.

Description

Walk wheel subassembly, door and side door

Technical Field

The present disclosure relates to the field of electrically operated doors, and more particularly to a walk wheel assembly, a door, and a side door.

Background

The electric door is a common door which is arranged at the entrance and exit of peripheral access gates of enterprises, plants, districts, villas and the like.

In the related art, the electric door is slidably supported on the ground or a track through the traveling wheel assembly arranged at the bottom of the door body, however, most of the electric doors are translational doors which only move along a straight line, and after the door is opened, as shown in fig. 20, a retreat space at least equal to the length of the door body is needed to hide the door body with the retreat space, so that the traveling wheel assembly in the related art cannot automatically adjust the sliding direction to guide the door body to rotate laterally.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the present disclosure provides a traveling wheel assembly capable of automatically adjusting a sliding direction to guide a door body to rotate sideways.

In order to solve the technical problem, an embodiment of the utility model provides a following technical scheme:

a traveling wheel assembly comprises a roller, a shaft core, a traveling wheel mounting frame and a traveling wheel fixing plate;

the roller is rotatably arranged on the travelling wheel mounting frame through a roller shaft arranged along a first direction;

the travelling wheel mounting frame is rotatably connected with the travelling wheel fixing plate through the shaft core arranged along a second direction, and the second direction is perpendicular to the first direction.

In some embodiments, the travelling wheel mounting bracket is provided with a mounting hole, and the axle core extends from the travelling wheel fixing plate in the direction towards the roller wheel and is rotatably mounted in the mounting hole of the travelling wheel mounting bracket; or the like, or, alternatively,

mounting holes are formed in the travelling wheel fixing plate, and the shaft core extends from the travelling wheel mounting frame towards the direction away from the roller and is rotatably mounted in the mounting holes of the travelling wheel mounting frame.

In some embodiments, the axle core extends from the travelling wheel mounting frame in a direction away from the roller, a hollow mounting column extends from the travelling wheel fixing plate in a direction away from the roller, and an elastic member elastically deforming in the second direction is arranged between the axle core and the mounting column.

In some embodiments, the axle core is rotatably coupled to the wheel mount by a rotational bearing.

In some embodiments, the travelling wheel mounting bracket has a top plate, the top plate has a mounting hole, the axle core extends from the mounting hole of the travelling wheel mounting bracket, an annular groove is provided at an end of the axle core close to the travelling wheel mounting bracket, the rolling bearing comprises two annular bearing seats provided at both sides of the top plate of the travelling wheel mounting bracket, a rolling ball is provided between each bearing seat and the top plate of the travelling wheel mounting bracket, each bearing seat has an inner flange extending radially inward, and the two inner flanges of the two bearing seats extend into and are positioned in the annular groove of the axle core.

In some embodiments, the shaft core is provided with a step portion, and the elastic member includes a spring sleeved on the shaft core, and the spring abuts between the step portion and the mounting post.

In some embodiments, the axle core has a first extension in an axial direction adjacent the carriage and a second extension away from the carriage; the outer diameter of the second extension part is smaller than that of the first extension part, and the step is formed at the joint of the first extension part and the second extension part;

the erection column is kept away from the one end of travelling wheel mounting bracket has the end plate of inside extension, the central authorities of end plate set up the confession the shaft hole that the axle core passed, the spring butt in the step of axle core with between the end plate of erection column.

In some embodiments, a sliding bearing supporting the shaft core to slide along the second direction is arranged between the shaft core and the mounting column.

In some embodiments, a sliding bearing for supporting the shaft core to slide along the second direction is arranged between the shaft core and the mounting column;

the mounting column is provided with a third extension part adjacent to the travelling wheel fixing plate and a fourth extension part far away from the travelling wheel fixing plate, and the inner diameter of the fourth extension part is smaller than that of the third extension part;

the sliding bearing is arranged between the third extending part of the mounting column and the first extending part of the shaft core, and the spring is arranged between the fourth extending part of the mounting column and the second extending part of the shaft core.

In some embodiments, the travelling wheel fixing plate is arranged between the travelling wheel mounting frame and the travelling wheel fixing plate;

the axle core extends from the travelling wheel mounting frame towards the direction far away from the roller wheel, a mounting hole extends from the mounting plate towards the direction far away from the roller wheel, and the axle core is rotatably mounted in the mounting hole;

a spring is arranged between the mounting plate and the travelling wheel fixing plate along the axial direction of the shaft core; the mounting plate is rotatably connected to the traveling wheel fixing plate to move together with the spring.

The present disclosure also provides a door, comprising:

a door body; and the number of the first and second groups,

according to the travelling wheel assembly, the travelling wheel fixing plate of the travelling wheel assembly is fixedly arranged at the bottom of the door body assembly.

The present disclosure also provides a side-swinging door, comprising:

the door body assembly comprises at least one pair of adjacent door bodies which are rotatably connected;

the guide piece is configured to guide the at least one pair of adjacent door bodies to move from a first direction to a second direction on one side of the first direction, so that the side-turn door moves from a door-closing state to a door-opening state;

the sliding support piece is arranged on at least one side of the door body assembly and used for supporting the door body assembly in a sliding mode in the lateral direction; and

according to the travelling wheel assembly, the travelling wheel fixing plate of the travelling wheel assembly is fixedly arranged at the bottom of the door body assembly.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the travelling wheel assembly provided by the embodiment of the disclosure comprises a roller, a shaft core, a travelling wheel mounting frame and a travelling wheel fixing plate; the roller is rotatably arranged on the travelling wheel mounting frame through a roller shaft arranged along a first direction; the travelling wheel mounting frame is rotatably connected with the travelling wheel fixing plate through a shaft core arranged along a second direction, and the second direction is perpendicular to the first direction. After the arrangement, the roller mounting frame and the rollers can rotate around the shaft core, and when the rollers slide to the bent rail, the sliding direction can be automatically adjusted, so that the rollers can stably slide along the rail.

In some embodiments, the axle core extends from the wheel mounting frame in a direction away from the roller wheel, the self-propelled wheel fixing plate extends from the wheel mounting frame in a direction away from the roller wheel to form a hollow mounting column, and an elastic member elastically deformed in the second direction is arranged between the axle core and the mounting column. After the arrangement, the roller can rotate relative to the shaft core along with the roller mounting frame and elastically slide relative to the mounting column along with the shaft core in the longitudinal direction. Therefore, the traveling wheel assembly not only can automatically adjust the sliding direction, but also has a vibration damping effect in the longitudinal direction, so that the door body assembly can slide along the track more stably.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in greater detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in greater detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.

FIG. 1 is a top view of an application scenario of a side-swinging door shown in accordance with an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic view of the side door and rail of FIG. 1;

FIG. 3 is a schematic structural view of a door body assembly of the side-swinging door of FIG. 1;

FIG. 4 is an exploded view of two adjacent door body coupling structures in the door body assembly of FIG. 3;

FIG. 5 is a schematic view of the hinge assembly of FIG. 4 connecting two adjacent door bodies;

FIG. 6 is an exploded view of the hinge assembly of FIG. 5;

FIG. 7 is a top plan view of a connecting structure of two adjacent door bodies in the door body assembly of FIG. 3;

FIG. 8 is a schematic structural view of the front door post of FIG. 1;

FIG. 9 is a schematic structural view of a door body support pillar of the side-swinging door of FIG. 1;

FIG. 10 is a schematic structural view of the sliding support member in the door body support pillar of FIG. 9;

FIG. 11 is an enlarged partial schematic view of FIG. 4 at A;

FIG. 11a is a schematic view showing an assembled positional relationship between a sliding support and a door body of the side swing door of FIG. 1;

FIG. 12 is a schematic structural view of a wheel assembly of a side-swinging door shown in accordance with an exemplary embodiment of the present disclosure;

fig. 13 is an exploded view of the carriage assembly of fig. 12;

FIG. 14 is a schematic structural view of a resilient wheel assembly of a side-swinging door shown in accordance with an exemplary embodiment of the present disclosure;

FIG. 15 is an exploded view of the resilient wheel assembly of FIG. 14;

FIG. 16a is a cross-sectional structural schematic view of the resilient road wheel assembly of FIG. 14 in a compressed state;

FIG. 16b is a cross-sectional structural schematic view of the resilient road wheel assembly of FIG. 14 in a free state;

FIG. 17 is another schematic structural view of a side-swinging door shown in accordance with an exemplary embodiment of the present disclosure;

FIG. 18 is an enlarged partial schematic view of FIG. 17 at B;

FIG. 19 is a schematic structural view of another resilient road wheel assembly shown in accordance with an exemplary embodiment of the present disclosure;

FIG. 20 is an exploded view of the resilient wheel assembly of FIG. 19;

fig. 21a to 21c are plan views illustrating a connection structure of two adjacent door bodies in a door body assembly according to further exemplary embodiments of the present disclosure;

fig. 22a to 22c are schematic views illustrating an assembly positional relationship of a sliding support and a door body of a side-swing door according to further exemplary embodiments of the present disclosure;

fig. 23 is a schematic view illustrating an installation scenario of an electric sliding door in the related art.

Detailed Description

Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used in this disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present disclosure, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and, therefore, should not be taken as limiting the present disclosure.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

For convenience of understanding and explanation, as shown in fig. 1, the moving direction of the door assembly is referred to as a transverse direction, the height direction of the door assembly is referred to as a longitudinal direction, the thickness direction of the door assembly is referred to as a lateral direction, and the side of the door assembly facing the doorway is an outer side and the side thereof away from the doorway is an inner side. In addition, one end of the door assembly in the door closing direction is referred to as a front end, and the other end thereof is referred to as a rear end. For example, in fig. 1, when the door assembly 20 is closed when moving to the right and opened when moving to the left, one end of the door assembly 20 on the right is referred to as a front end, and one end on the left is referred to as a rear end.

FIG. 1 is a top view of an application scenario of a side-swinging door shown in accordance with an exemplary embodiment of the present disclosure; FIG. 2 is a schematic view of the side door and rail of FIG. 1; fig. 3 is a schematic structural view of a door body assembly of the side-swing door of fig. 1. Referring to fig. 1 to 3, the side-turn door provided in this embodiment includes a door body assembly 20, a traveling wheel assembly 24 supporting the door body assembly 20 in a longitudinal direction, and a sliding support 32 (see fig. 9) slidably supporting the door body assembly 20 in a lateral direction, where the sliding support 32 is mounted on a door body support pillar 30, the door body assembly 20 can slide on a track 40, the track 40 is fixedly mounted on the ground and includes a first track section 401, a second track section 402, and a third track section 403 connecting the first track section 401 and the second track section 402, the first track section 401 and the second track section 402 are straight tracks and are substantially perpendicular to each other, and the third track section 403 is a curved track. The first track section 401 is disposed substantially parallel to the doorway 50. When the side revolving door is in a closed door state, the door body assembly 20 slides to the first track section 401 parallel to the door opening 50, and when the side revolving door is in an open door state, the door body assembly 20 slides to the third track section 403 and/or the second track section 402 of the track 40.

In this embodiment, the first track section 401 and the second track section 402 of the track 40 are substantially perpendicular, and after the arrangement, when the door body assembly 20 is retreated, the door body assembly does not occupy a spatial position in the extending direction of the first track section 401 of the doorway 50, but is retreated to the curved track section 403 and/or the second track section 402 of the track 40 along the lateral direction, so that the lateral space of the doorway 50 is fully utilized.

In this embodiment, the door assembly 20 is supported by the walking wheel assembly 24 to slide on the rail 40, the door assembly 20 is formed by rotatably connecting a plurality of single door bodies 210 sequentially through hinges 22, and an included angle between adjacent door bodies 210 can be changed. The traveling wheel assembly 24 can rotate relative to the door body 210 at the bottom of the door body 210 to adapt to the track shape of the rail 40. When the traveling wheel assembly 24 supports the door assemblies 20 to slide (or roll) on the rails 40, the included angle between each two adjacent doors 210 can change along the shape of the track of the rails 40. When two adjacent door bodies 210 are located on the first track section 401 or the second track section 402, the included angle between the two adjacent door bodies is about 180 degrees, and when the two adjacent door bodies 210 are located on the curved track section 403, the included angle between the two adjacent door bodies is matched with the radian of the curved track section 403. In this way, the rail 40 can guide the door body assembly 20 to slide laterally from the horizontal direction, so as to realize lateral retreat. Compared with a translation door in the related art, the side-rotating door disclosed by the invention can effectively reduce the retreat space of the door body assembly under the condition that the door closing width is not influenced.

The door body 210 comprises a first cross bar 2103 arranged at the longitudinal bottom and a second cross bar 2104 arranged at the longitudinal top, the first cross bar 2103 can be used as a support beam of the door body 210, a plurality of longitudinal connecting columns 2105 are arranged between the first cross bar 2103 and the second cross bar 2104, and the connecting columns 2105 are arranged at intervals along the transverse direction; it is to be understood that the door body is not limited in its construction to the present disclosure, and for example, a sealing plate is provided between the first rail 2103 and the second rail 2104, or the door body is integrally formed of a single plate.

In this embodiment, racks 25 are installed on one side of the first crossbar 2103 at the longitudinal bottom of the door bodies 210, the racks 25 extend along the length direction of the first crossbar 2103, the racks 25 on the door bodies 210 are aligned in the longitudinal direction and are sequentially and continuously connected, a motor 33 (see fig. 9) is fixedly installed on the door body support upright 30, the motor 33 drives a gear 332 (see fig. 9) at the output end of the motor to rotate, and the gear 332 is engaged with the racks 25 on the door bodies 210; when the gear rotates, the rack 25 drives the door body assembly 20 to move on the rail 40. It should be noted that, in some other embodiments, the motor may also be mounted on the second cross bar 2104 of one of the door bodies 210, and the rack 25 is fixed on the ground; other transmission modes, such as a friction wheel transmission mode, may also be adopted, and the present disclosure does not limit the transmission modes of the motor and the door body 210. It will be appreciated that the motor 33 could alternatively be fixed to the floor rather than to the door support pillar 30.

FIG. 3 is a schematic structural view of a door body assembly of the side-swinging door of FIG. 1; FIG. 4 is an exploded view of a joining structure of two adjacent door bodies in the door body assembly of FIG. 3; FIG. 5 is a schematic view of the hinge assembly of FIG. 4 connecting two adjacent door bodies; FIG. 6 is an exploded view of the hinge assembly of FIG. 5; fig. 7 is a plan view of a connection structure of two adjacent door bodies in the door body assembly of fig. 3. Referring to fig. 3 to 7, in the present embodiment, the adjacent door bodies 210 are rotatably connected by the hinge assembly 22, the hinge assembly 22 includes a first hinge plate 221 and a second hinge plate 222, the first hinge plate 221 and the second hinge plate 222 are rotatably connected by a hinge shaft 223, two ends of the hinge shaft 223 are positioned by clamp springs 224, and the first hinge plate 221 and the second hinge plate 222 can rotate around the hinge shaft 223. The first hinge piece 221 and the second hinge piece 222 are fixed to two adjacent door bodies 210, respectively, so that the two adjacent door bodies 210 can rotate around the hinge shaft 223. In this embodiment, the hinge shaft 223 is disposed along the longitudinal direction, and the first hinge sheet 221 and the second hinge sheet 222 are disposed in parallel with the hinge shaft 223 and fixed on the same side wall of two adjacent door bodies 210 through screws 225.

With continued reference to fig. 5, in one implementation, the amplitude of rotation of the first and second hinge leaves 221, 222 is limited to within 180 degrees. After the arrangement, the relative rotation angle between the adjacent door bodies 210 changes within 180 degrees, when the angles between the adjacent door bodies 210 are all 180 degrees, the door bodies 210 are arranged in a straight line, and at this time, the door body assembly 20 is integrally located on the straight rail section 401 or the straight rail section 402. When door body assembly 20 slides to curved rail section department, because can adjust the contained angle through hinge assembly 22 between the door body 210, consequently, door body assembly 20's crookedness can cooperate with the crookedness of rail 40, and door body assembly 20 can slide in order to realize hidden back to the throne along the curved rail.

FIG. 8 is a schematic structural view of the front door post of FIG. 1; fig. 9 is a schematic structural view of a door body support pillar of the side-swing door of fig. 1. Referring to fig. 1, 2, 8 and 9, in the present embodiment, a front door pillar 10 is disposed at a free end of the straight rail section 401 away from the curved rail section 403, and the door body support pillar 30 and the front door pillar 10 may be respectively installed at two sides of the doorway 50. The door support pillar 30 laterally supports the door assembly 20. The door body supporting upright column 30 is installed at the position where the door body assembly 20 is overlapped in the complete door closing state and the complete door opening state, and thus, in the process of door closing or lateral retreating and door opening of the door body assembly 20, the door body supporting upright column 30 can always support the door body assembly 20. In this embodiment, the door body supporting pillar 30 and the front door pillar 10 are respectively located at two sides of the doorway 50, and after the arrangement, when the side revolving door is in the closed state, the door body supporting pillar 30 and the front door pillar 10 can support the door body assembly 20 at two transverse ends of the door body assembly 20, so that the door body supporting pillar 30 and the front door pillar 10 have good stability of closing the door.

With continued reference to fig. 8, the front door pillar 10 is secured to a base plate 14, which is secured to the floor by screws 16. it will be appreciated that the front door pillar 10 may also be welded to the base plate 14 or both. The bottom of the front door post is provided with a limiting piece 15, the limiting piece 15 is a flat plate, and is fixedly installed on the bottom plate 14 at the outer side of the front door post 10. The front guide 12 is mounted on top of the front gate post 10, the front guide 12 having a mounting plate 123, the mounting plate 123 being mounted to the top of the front gate post 10 by screws 13, it being understood that the mounting plate 123 may also be welded to the front gate post. On the outer side of the front door post 10, two guide pieces 121 opposite to each other extend downward from the mounting plate 123, the two guide pieces 121 form a stopper, and the two guide pieces 121 have guide portions 122 with gradually increasing pitches toward the lateral ends of the door body assembly 20. When the side revolving door is in a completely closed state, under a normal condition, the bottom of the front end of the door body assembly 20 is spaced from the limiting piece 15 by a certain distance under the control of the electric control part; if the electric control part is not adjusted or fails, the limiting piece 15 blocks the door body assembly 20 in the running direction of the door body, so that the phenomenon that the door body assembly 20 overshoots and is separated from the door body supporting upright post can be prevented. The front end top of the door body assembly 20 is guided by the guide portion 122 of the front guide 12 to extend between the two guide pieces 121, thereby being laterally restrained. The front guide piece 12 has lateral and longitudinal limiting effects on the door body assembly 20, can achieve the effects of wind prevention and lifting prevention, and ensures the stability of the door body assembly when the door is closed.

Fig. 9 is a structural schematic view of a door body support pillar of the side swing door of fig. 1, fig. 10 is a structural schematic view of a sliding support member in the door body support pillar of fig. 9, fig. 11 is a partially enlarged structural schematic view at a in fig. 4, and fig. 11a is a schematic view of an assembly positional relationship between the sliding support member and the door body of the side swing door of fig. 1. Referring to fig. 9-11 a, in the present embodiment, the door support pillar 30 is fixed to the floor through a bottom plate 311. The motor 33 and the transmission gear 332 are installed at the longitudinal bottom of the door body support pillar 30. In this embodiment, install motor 33 inside door body support post 30, realized the hidden installation of motor, can promote the outward appearance effect of side revolving door. The sliding support piece 32 is installed at the longitudinal top of the door body support upright 30 towards the outer side of the door body assembly, the sliding support piece 32 is in sliding fit with the door body assembly 20, and the sliding support piece 32 can laterally and longitudinally support the door body assembly 20 in a sliding manner.

With reference to fig. 10, the sliding support 32 includes a fixing seat 325 and a connecting plate 324 extending from the fixing seat along a lateral direction, the fixing seat 325 is fixed to one side of the door body supporting upright 30 facing the door body assembly through a screw, one end of the connecting plate 324 is fixedly connected to the fixing seat 325, and the other end is provided with a guiding wheel set. The guide wheel set of the sliding support 32 includes two lateral guide wheels 322 and a longitudinal guide wheel 326 located between the two lateral guide wheels 322, the two lateral guide wheels 322 are sleeved on two longitudinal wheel shafts 321 at two transverse ends of the connecting plate 324 and can rotate around the respective longitudinal wheel shaft 321, an axle end limiting member 323 is installed on the longitudinal wheel shaft 321, the axle end limiting member 323 is used for positioning the lateral guide wheels 322 in the longitudinal direction and preventing the lateral guide wheels 322 from separating from the longitudinal wheel shaft 321, in this embodiment, the axle end limiting member 323 can use a snap spring, and can also use a positioning pin, an end face screw, and the like. The longitudinal guide wheel 326 is sleeved on the lateral axle 327 of the connecting plate 324 and can rotate around the lateral axle 327, and the lateral axle 327 and the longitudinal axle 321 are perpendicular to each other. In the embodiment, two (or more) lateral guide wheels 323 are arranged, so that the swing of the door body assembly can be reduced, and the operation translation of the door body assembly is enhanced; the longitudinal guide wheel can prevent the door body from jumping or gear falling off caused by the upward acting force generated when the gear and the rack are meshed to run when the door body is light.

With continued reference to fig. 11 and 11a, the second cross bar 2104 at the top of each door body 210 in the longitudinal direction is provided with a cavity on the side facing the door body support pillar 30, the cavity extends along the length direction of the second cross bar 2104, and the cavities on the plurality of door bodies 210 are aligned in the longitudinal direction and are connected in sequence. The cavity comprises a top wall 201, a bottom wall 202 and two side walls 203 and 205, and an opening 204 is arranged on the side wall 205 close to the door body supporting upright 30. When the sliding support piece is assembled on the door body, each guide wheel 322, 326 extends into the cavity from the opening 204 to slide, so as to realize sliding connection with the door body 210, and the door body 210 can slide relative to the door body support upright 30. The lateral guide wheels 322 slide against the side walls 203, 205 of the mould cavity and the longitudinal guide wheels 326 slide against the top 201 and bottom 202 walls of the mould cavity. With the arrangement, the sliding support piece 32 can be locked in the cavity to slide and cannot be easily separated from the cavity, and the sliding support piece 32 has lateral guiding and supporting functions on the door body assembly 20, so that the operation stability of the door body assembly is ensured.

FIG. 12 is a schematic structural view of the wheel assembly of the side door of FIG. 3; fig. 13 is an exploded view of the carriage assembly of fig. 12. Referring to fig. 12 and 13, in the present embodiment, the traveling wheel assembly 24 is rotatably mounted at the bottom of the door body 210 and is mounted at a position close to the adjacent door body 210, so that the door body assembly 20 is supported on the rail 40 and slides along the track of the rail 40. The carriage assembly 24 is provided with a roller 245, and the roller 245 is attached to the rail 40 to slide. In this embodiment, the roller 245 includes a core 2451 and two side wheels 2452 radially extending from two ends of the core 2451, and the core 2451 and the two side wheels 2452 define a groove 2453; accordingly, rail 40 includes a pair of raised, parallel tracks that guide two edge wheels 2452 within groove 2453. Thus, by providing a groove on the roller 245 and a raised track on the rail 40, a male-female sliding fit between the roller 245 and the rail 40 is achieved. With the arrangement, the roller 245 is limited to slide on the rail 40, and the roller 245 cannot be separated from the rail 40, so that the door body assembly 20 can stably slide along the rail 40.

In this embodiment, the vertical bottom of door body group spare 20 receives the sliding support through the unsmooth cooperation of walking wheel subassembly 24 and rail 40, and the vertical top of door body group spare 20 receives the sliding support through the sliding support piece 32 and the sliding support of die cavity, and door body group spare 20 all obtains the sliding support at bottom and top, and door body group spare 20's operation is more stable. It will be appreciated that in other embodiments, other types of male and female engagement between the rollers 245 and the rails 40 may be used; for example, the pair of parallel raised rails of the track 40 may also guide the two edge wheels 2452 outside of the two edge wheels 2452, respectively; alternatively, the roller 245 may have only a single wheel, the roller of which is defined within the pair of parallel raised tracks of the rail 40.

With continued reference to fig. 12 and 13, in one implementation, the roller 245 of the carriage assembly 24 is rotatably mounted to the carriage plate 241 by a carriage mount 243, the rolling surface of the roller 245 being perpendicular to the plane of rotation of the carriage mount. The traveling wheel fixing plate 241 is fixedly mounted to the bottom of the door 210 by screws 247, but it is understood that the traveling wheel fixing plate 241 may be welded to the bottom of the door 210. The central portion of the wheel securing plate 241 has an axle core 248 extending in a direction toward the roller 245. The top plate of the wheel mounting bracket 243 has a mounting hole 249, and a bearing or a bushing 242 (for simplicity, the bearing will be described below as an example) is provided in the mounting hole 249. The axle core 248 is rotatably mounted to a mounting hole 249 of the carriage by a bearing 242. The shaft core 248 passes through the bearing 242 and is positioned by a retaining member 246. The wheel mounting frame comprises two parallel side plates 243a and 243b extending downwards from the top plate, the roller 245 is rotatably mounted between the two side plates 243a and 243b through a roller shaft 244 penetrating through the two side plates 243a and 243b, the roller shaft 244 is positioned on the wheel mounting frame 243 through limiting pieces 246 at two ends, and a core 2451 of the roller 245 is sleeved on the roller shaft 244, so that the roller 245 is mounted on the wheel mounting frame 243 through the roller shaft 244 and can rotate around the roller shaft 244. With this arrangement, the roller 245 can rotate around the axle core 248, and when the traveling wheel assembly 24 slides to the bent portion of the rail 40, the sliding direction can be automatically adjusted, so as to stably slide along the rail. It can be understood that, in another implementation manner, the traveling wheel fixing plate is provided with a mounting hole, and the shaft core can extend from the traveling wheel mounting frame towards the direction away from the roller and is rotatably mounted in the mounting hole of the traveling wheel mounting frame.

While an exemplary embodiment of the present disclosure has been described in detail above, it is to be understood that the present disclosure is not limited thereto. Other exemplary embodiments of the present disclosure are described below.

FIG. 14 is a schematic structural view of a walking wheel assembly according to another exemplary embodiment of the present disclosure; FIG. 15 is an exploded view of the wheel carriage assembly of FIG. 14; fig. 16a is a schematic cross-sectional structure of the carriage assembly of fig. 14 in a compressed state, and fig. 16b is a schematic cross-sectional structure of the carriage assembly of fig. 14 in a free state. Referring to fig. 14-16 b, in an implementation manner, the traveling wheel assembly disposed at the bottom of the door body 210 may also be an elastic traveling wheel assembly, and the elastic traveling wheel assembly has a shock absorption and noise reduction effect, so that the operation of the door body assembly is more stable. In this manner, the resilient roller assembly includes a roller 2451, a shaft 2432, a roller mounting bracket 2431, and a roller mounting plate 2411.

The roller shaft 2441 is mounted on the roller mounting bracket 2431, the roller shaft 2441 is positioned on the roller mounting bracket 2431 through limiting pieces at two ends, the roller 2451 is rotatably mounted on the roller mounting bracket 2431 through the roller shaft 2441 and can rotate around the roller shaft 2441, and the rolling surface of the roller 2451 is perpendicular to the rotating surface of the roller mounting bracket 2431.

The fixed plate 2411 has a mounting hole, and the axle core 2432 extends from the wheel mounting bracket 2431 in a direction away from the roller 2451. The axle core 2432 has a first extension 2432a and a second extension 2432b along the axial direction, the outer diameter of the second extension 2432b is smaller than the outer diameter of the first extension 2432a, the first extension 2432a is close to the top plate of the traveling wheel mounting bracket 2431, the second extension 2432b extends from one end of the first extension 2432a away from the traveling wheel mounting bracket, and a step 2432c is formed at the joint of the first extension 2432a and the second extension 2432 b.

A hollow mounting post 2412 extends from the fixed plate 2411 in a direction away from the roller 2451. The mounting post 2412 has a third extension 2412a and a fourth extension 2412b, the inner diameter of the fourth extension 2412b is smaller than the inner diameter of the third extension 2412a, the third extension 2412a extends upward from the wheel fixing plate 2411, the fourth extension 2412b extends upward from the third extension 2412a, a step 2412c is formed at the joint of the third extension 2412a and the fourth extension 2412b, an end of the fourth extension 2412b away from the wheel mounting bracket has an inward extending end plate 2412c, and a shaft hole 2412d for the shaft core 2432 to pass through is arranged in the center of the end plate 2412 c.

An elastic member allowing the shaft core 2432 to elastically move in the axial direction relative to the mounting column 2412 is disposed between the shaft core 2432 and the mounting column 2412, and includes a spring 2422 sleeved on the second extension 2342b of the shaft core 2432, one end of the spring 2422 abuts against the step 2432c of the shaft core 2432, and the other end of the spring 2422 abuts against an end plate of the fourth extension 2412b of the mounting column 2412. The end of the shaft core 2432, which passes through a shaft hole formed in the end plate of the mounting post 2412, is provided with a limiting member 2432d, and the limiting member 2432d abuts against the end plate of the mounting post 2412 in a free state where the spring 2422 is not subjected to an external force.

A sliding bearing 2421 is provided between the first extension 2432a of the shaft core 2432 and the third extension 2412a of the mounting column 2412, and the sliding bearing 2421 axially abuts against the step 2412c of the mounting column 2412. Slide bearing 2421 supports shaft core 2432 for sliding movement in an axial direction relative to mounting post 2412.

The axle core 2432 is rotatably connected to the wheel mount 2431 by a rotational bearing. The axle core 2432 extends from the mounting hole of the top plate of the carriage 2431, an annular groove 2432f is provided at an end of the axle core 2432 adjacent to the top plate of the carriage 2431, the rotary bearing comprises two annular bearing seats 2472 provided at both sides of the top plate of the carriage, a ball 2471 is provided between each bearing seat 2472 and the top plate of the carriage, each bearing seat 2472 has an inner flange 2473 extending radially inward, the radially inner surfaces of the inner flanges 2473 of the two bearing seats 2472 are substantially flush with the hole wall of the mounting hole of the carriage 2431, the two inner flanges 2473 of the two bearing seats extend into and are positioned in the annular groove 2432f of the axle core, and the axle core 2432 is positioned axially relative to the carriage 2471, and the ball 2471 in the bearing seats can support the carriage 2431 for rotation relative to the axle core 2432. It will be appreciated that in other embodiments, instead of rolling bearings, sliding bearings may be used between the axle core 2432 and the wheel carriage 2431.

FIG. 17 is another schematic structural view of a side-swinging door shown in accordance with an exemplary embodiment of the present disclosure; fig. 18 is a partially enlarged structural view at B in fig. 17. Referring to fig. 17 and 18, a cavity 2113 is formed in the first rail 2103 at the longitudinal bottom of the door body, a mounting plate 2123 is disposed below the cavity 2113, and the mounting post 2412 of the elastic traveling wheel penetrates the mounting plate 2123 and is accommodated in the cavity 2113. The wheel fixing plate 2411 of the elastic wheel is fixed to the mounting plate of the first cross bar 2103 by a screw 2421, so that the elastic wheel is fixedly mounted at the bottom of the first cross bar 2103. Such structure, make full use of first horizontal pole 2103's inner space, made the elasticity travelling wheel realize hidden installation, promoted door body group's outward appearance effect.

After the assembly of the resilient carriage is completed, bearing 2421 and spring 2422 are both received within mounting post 2412, bearing 2421 is defined between the top plate of carriage mount 2431 and step 2412c of mounting post 2412, and spring 2422 is defined between step 2432c of axle core 2432 and the end plate of mounting post 2412. The total length of the shaft core 2432 is greater than the total length of the mounting post 2412, the mounting post 2412 can move between a limit piece 2432d on the shaft core 2432 and an outer flange 2432e extending from the shaft core 2432 along the axial direction of the shaft core 2432, and as the spring abuts between the step 2432c of the shaft core 2432 and the top of the mounting post 2412, when the shaft core 2432 reciprocates relative to the mounting post 2412 along the axial direction, the spring 2422 compresses or resets, so that the reciprocating motion of the shaft core 2432 is elastic.

In this embodiment, the roller 2451 and the roller mounting bracket 2431 can rotate around the axle 2432, and when the elastic roller assembly slides to the curved track of the track 40, the sliding direction can be automatically adjusted, so that the door assembly can stably slide along the track.

The elasticity of this embodiment is walked the wheel subassembly and is passed through the rugged portion of rail when the door body group spare, can provide the ascending cushioning effect of vertical, makes the operation of door body group spare more steady. Specifically, when the elastic traveling wheel assembly moves to a bump of a rail, the position of the roller 2451 is correspondingly raised, the traveling wheel mounting bracket 2431 moves upwards together with the axle core 2432 relative to the mounting post 2412 fixed to the door body assembly, as shown in fig. 16a, the upwards movement of the axle core 2432 causes a spacing L1 between the limiting member 2432d on the axle core 2432 and the mounting post 2412, and the spring 2422 between the mounting post 2412 and the axle core 2432 is compressed; when the elastic traveling wheel assembly moves to the normal position of the rail, the position of the roller 2451 is also lowered, the traveling wheel mounting bracket 2431 moves downward relative to the mounting post 2412 together with the shaft core 2432, referring to fig. 16b, the downward movement of the shaft core 2432 causes the limit piece 2432d on the shaft core 2432 to move downward to the position abutting against the mounting post 2412, the spring 2422 elastically resets, a distance L2 is formed between the traveling wheel fixing plate 2411 and the outer flange 2432e of the shaft core 2432, and the distance L2 can be equal to the distance L1. Thus, the spring 2422 can provide the traveling wheel mounting bracket 2431 with an elastic force along the axial direction of the axle core 2432 (i.e. the longitudinal direction of the door body assembly), so that the roller 2451 can be tightly attached to the rail 40 to slide, the roller 2451 can be prevented from being separated from the rail 40, and the operation stability of the side revolving door can be effectively improved.

FIG. 19 is a schematic structural view of a road wheel assembly according to another exemplary embodiment of the present disclosure; fig. 20 is an exploded view of the wheel assembly of fig. 19. Referring to fig. 19 and 20, in this embodiment, the traveling wheel assembly disposed at the bottom of the door body 210 is an elastic traveling wheel assembly, and the elastic traveling wheel assembly has a damping and noise reducing effect, so that the operation of the door body assembly is more stable. In this embodiment, the elastic roller assembly includes a roller 341, an axle 3431, a roller mounting bracket 343, a roller fixing plate 347, and a mounting plate 345 between the roller mounting bracket 343 and the roller fixing plate 347.

The roller 341 is rotatably mounted to the mounting plate 345 by a pulley mounting bracket 343, and the pulley fixing plate 347 is fixedly mounted to the bottom of the door body 210 by a screw 348. The roller shaft 342 is mounted on the wheel mounting bracket 343, the roller shaft 342 is positioned on the wheel mounting bracket 343 through the stoppers 3421 at both ends, the roller 341 is rotatably mounted on the wheel mounting bracket 343 through the roller shaft 342 and can rotate around the roller shaft 342, and the rolling surface of the roller 341 is perpendicular to the rotating surface of the wheel mounting bracket 343.

The central portion of the wheel mount 343 has an axis 3431 extending in a direction away from the roller 341. The mounting plate 345 has a mounting hole 3451 extending in a direction away from the roller 341 at a middle portion thereof, and the shaft core 3431 is rotatably mounted to the mounting hole 3451 of the mounting plate 345 via a bearing or a shaft sleeve 3432.

The mounting plate 345 is provided with a shaft hole 3452, the travel wheel fixing plate 347 is provided with a shaft hole 3471, and a shaft 349 which is substantially parallel to the roller shaft 342 passes through the shaft hole 3452 of the mounting plate 345 and the shaft hole 3471 of the travel wheel fixing plate 347, thereby rotatably connecting the mounting plate 345 and the travel wheel fixing plate 347. A spring 346 is longitudinally mounted between the mounting plate 345 and the wheel securing plate 347.

The elasticity of this embodiment is walked the wheel subassembly and is passed through the rugged portion of rail when the door body group spare, can provide the ascending cushioning effect of vertical, makes the operation of door body group spare more steady. Specifically, when the elastic traveling wheel assembly moves to the convex part of the track, the position of the roller 341 rises correspondingly, the traveling wheel mounting bracket 343 and the shaft core 3431 move upwards, the mounting plate 345 rotates upwards around the shaft 349, and the spring 346 between the mounting plate 345 and the traveling wheel fixing plate 347 is compressed; when the elastic caster assembly moves to the normal position of the rail, the position of the roller 341 also drops, the caster mount 343 and the shaft core 3431 move downward, and the restoring force of the spring 346 causes the mounting plate 345 to rotate downward about the shaft 349. Thus, the spring 346 can provide elastic force to the wheel mounting bracket 343 along the axial direction of the shaft core 3431 (i.e. the longitudinal direction of the door body assembly), so as to ensure that the roller 341 closely adheres to the rail 40 to slide, prevent the roller 341 from coming off the rail 40, and effectively improve the operation stability of the side revolving door.

It will be appreciated that the resilient wheel assemblies of the present disclosure may be used with both side-swinging doors and other types of moving doors, such as sliding doors, swinging doors, and the like.

Fig. 21a to 21c are plan views illustrating a connection structure of two adjacent door bodies in a door body assembly according to further exemplary embodiments of the present disclosure. In fig. 21a, the first hinge sheet 221 and the second hinge sheet 222 of the hinge assembly 22 can be fixedly mounted on the door 2101 and the door 2012 on the opposite side to that shown in fig. 7; in fig. 21b, the first and second hinge leaves 221 and 222 of the hinge assembly are fixedly mounted to the opposite lateral wall surfaces of the door body 2101 and 2012, respectively; in fig. 21c, the first and second hinge leaves 221, 222 of the hinge assembly can be fixedly attached to the door body 2101 and the top longitudinal wall (alternatively, the bottom longitudinal wall) of the door body 2012, respectively. It is to be understood that the connection between the hinge assembly 22 and the adjacent door body is not limited to the above example, and may be configured according to the specific track shape of the rail.

While in the above embodiments the two straight sections of the track 40 are substantially perpendicular to each other, it is understood that in other embodiments the two sections of track may form an angle of less than 90 degrees or greater than 90 degrees, or the track may have only curved sections, or the track may be a combination of one curved section and one track section, or a combination of more track sections, etc.; in addition, the ground can be ditched, and the rail is arranged below the ground surface.

It will be appreciated that in other embodiments, rails may not be provided, and other guide rails or other suitable types of guides may be provided. For example, the side-turn door of the present disclosure may be used as a warehouse door or other door for a closed space, and in this case, the guide rail may be provided above the doorway to guide the door body assembly upward.

It is understood that in other embodiments, the limiting member 15 may be other limiting structures, such as a block structure, a protrusion structure, etc., and the limiting member 15 may also be disposed at other positions, such as fixed to the middle of the front doorpost 10 in the longitudinal direction or fixed to the ground; alternatively, instead of the separate limiting member 15, a limiting structure may be provided on the front guide member 12, for example, a limiting structure may be provided at the other lateral end of one or both of the guide pieces 121; alternatively, the front guide 12 may be disposed at the longitudinal bottom of the front doorpost 10, and the limiting member may be disposed at the longitudinal top of the front doorpost 10; alternatively, more stoppers and front guides may be provided. It is understood that, in other embodiments, the front doorpost 10 may not be provided, and the limiting member 15 and the front guide member may be fixed to the wall.

It will be appreciated that other configurations of the sliding support 32 may be used in other embodiments, such as having only lateral guide wheels and no longitudinal guide wheels, or having only longitudinal guide wheels and no lateral guide wheels; or other numbers of lateral or longitudinal guide wheels; for another example, a slider may be used instead of the guide wheel. In other embodiments, the door support pillar 30 may be disposed on the outer side of the rail 40, and the sliding support 32 may be disposed on the inner side of the door support pillar 30 facing the rail 40; alternatively, the door support pillar 30 and the sliding support 32 may be provided on both sides of the rail. In addition, the sliding support 32 may also be mounted on a wall or other component.

Fig. 22a to 22c are schematic views illustrating an assembly positional relationship between a sliding support and a door body of a side-swing door according to further exemplary embodiments of the present disclosure. In the embodiment shown in fig. 22a, an L-shaped part extends outwards from the longitudinal middle part of the door body 210 on the side facing the door body support pillar 30, a cavity is formed between the L-shaped part and the side wall of the door body, the cavity has a top wall 201, side walls 203 and 205, and a downward opening 204, and the sliding support 32 extends upwards from the opening 204 into the cavity and is in sliding locking with the cavity. It will be appreciated that in other embodiments, the cavity may be formed in the door body. In the embodiment shown in fig. 22b, a U-shaped member is provided on the longitudinal top wall of the door 210, the U-shaped member has a bottom wall 202 and two side walls 203, 205, and forms a cavity with an upward opening 204, and the guide wheels 322 of the sliding support 32 extend from the opening 204 downward into the cavity and are in sliding contact with the two side walls 203, 205 of the cavity. It is understood that the mounting location of the sliding support 32 on the door support pillar 30 can be configured to fit the cavity, and will not be described herein. In the implementation manner shown in fig. 22c, no cavity is disposed on the door body 210, the sliding support 32 has two guide wheels 3201 and 3202 fixed on the connecting plate 324, the two guide wheels 3201 and 3202 respectively slidably abut against two sides of the second cross bar 2104 of the door body 210, the door body 210 is limited to slide between the two guide wheels 3201 and 3202, the lateral guiding and supporting effects on the door body 210 can be achieved, and the operation stability of the door body assembly is ensured.

It is understood that in other embodiments, the door assembly may include only two doors.

It is understood that reference to sliding in this disclosure includes rolling.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (12)

1. A traveling wheel assembly, characterized in that:

comprises a roller, a shaft core, a travelling wheel mounting rack and a travelling wheel fixing plate;

the roller is rotatably arranged on the travelling wheel mounting frame through a roller shaft arranged along a first direction;

the travelling wheel mounting frame is rotatably connected with the travelling wheel fixing plate through the shaft core arranged along a second direction, and the second direction is perpendicular to the first direction.

2. A running wheel assembly according to claim 1, wherein:

the travelling wheel mounting frame is provided with a mounting hole, and the shaft core extends from the travelling wheel fixing plate along the direction towards the roller and is rotatably mounted in the mounting hole of the travelling wheel mounting frame; or the like, or, alternatively,

mounting holes are formed in the travelling wheel fixing plate, and the shaft core extends from the travelling wheel mounting frame towards the direction away from the roller and is rotatably mounted in the mounting holes of the travelling wheel mounting frame.

3. A running wheel assembly according to claim 1, wherein:

the axle core certainly the travelling wheel mounting bracket is towards keeping away from the direction of gyro wheel extends, certainly travelling wheel fixed plate is towards keeping away from the direction of gyro wheel extends there is hollow erection column, be equipped with between axle core and the erection column along second direction elastic deformation's elastic component.

4. A wheel assembly according to claim 3, wherein:

the axle core is rotatably connected with the travelling wheel mounting rack through a rotating bearing.

5. The wheel carriage assembly of claim 4 wherein:

the travelling wheel mounting bracket has the roof, the mounting hole has been seted up to the roof, the axle core certainly the mounting hole of travelling wheel mounting bracket stretches out, the axle core is close to the annular groove is established to the one end of travelling wheel mounting bracket, rolling bearing installs the ball, every including two annular bearing frame of locating the roof both sides of travelling wheel mounting bracket between the roof of every bearing frame and travelling wheel mounting bracket the bearing frame has along the interior flange of radial inside extension, two interior flanges of two bearing frames stretch into and are located in the annular groove of axle core.

6. A wheel assembly according to claim 3, wherein:

the shaft core is provided with a step part, the elastic part comprises a spring sleeved on the shaft core, and the spring is abutted against the step part and the mounting column.

7. The walking wheel assembly of claim 6, wherein:

the axle core has a first extension in the axial direction adjacent to the wheel mount and a second extension remote from the wheel mount; the outer diameter of the second extension part is smaller than that of the first extension part, and the step is formed at the joint of the first extension part and the second extension part;

the erection column is kept away from the one end of travelling wheel mounting bracket has the end plate of inside extension, the central authorities of end plate set up the confession the shaft hole that the axle core passed, the spring butt in the step of axle core with between the end plate of erection column.

8. A wheel assembly according to claim 3, wherein:

and a sliding bearing for supporting the shaft core to slide along the second direction is arranged between the shaft core and the mounting column.

9. The wheel carriage assembly of claim 7 wherein:

a sliding bearing for supporting the shaft core to slide along the second direction is arranged between the shaft core and the mounting column;

the mounting column is provided with a third extension part adjacent to the travelling wheel fixing plate and a fourth extension part far away from the travelling wheel fixing plate, and the inner diameter of the fourth extension part is smaller than that of the third extension part;

the sliding bearing is arranged between the third extending part of the mounting column and the first extending part of the shaft core, and the spring is arranged between the fourth extending part of the mounting column and the second extending part of the shaft core.

10. A running wheel assembly according to claim 1, wherein:

the mounting plate is arranged between the travelling wheel mounting frame and the travelling wheel fixing plate;

the axle core extends from the travelling wheel mounting frame towards the direction far away from the roller wheel, a mounting hole extends from the mounting plate towards the direction far away from the roller wheel, and the axle core is rotatably mounted in the mounting hole;

a spring is arranged between the mounting plate and the travelling wheel fixing plate along the axial direction of the shaft core; the mounting plate is rotatably connected to the traveling wheel fixing plate to move together with the spring.

11. A door, comprising:

a door body; and the number of the first and second groups,

the traveling wheel assembly according to any one of claims 1 to 10, wherein the traveling wheel fixing plate of the traveling wheel assembly is fixedly mounted on the bottom of the door body assembly.

12. A side-swinging door, comprising:

the door body assembly comprises at least one pair of adjacent door bodies which are rotatably connected;

the guide piece is configured to guide the at least one pair of adjacent door bodies to move from a first direction to a second direction on one side of the first direction, so that the side-turn door moves from a door-closing state to a door-opening state;

the sliding support piece is arranged on at least one side of the door body assembly and used for supporting the door body assembly in a sliding mode in the lateral direction; and

the traveling wheel assembly according to any one of claims 1 to 10, wherein the traveling wheel fixing plate of the traveling wheel assembly is fixedly mounted on the bottom of the door body assembly.

Images