CN218265513U - Upper hinge and side-rotating door using same - Google Patents

Abstract

The utility model discloses an go up hinge page or leaf and use side revolving door of this hinge page or leaf relates to the building field, has solved the problem of the easy damage of prior art, and its technical scheme main points are: an upper hinge comprises an upper hinge shaft, a second upper hinge plate, a second lower hinge plate and a guide wheel; the second upper leaf plate and the second lower leaf plate are respectively fixed on adjacent door leaves; the guide wheel is arranged at the upper end of the upper hinge shaft; the guide wheel is connected with the upper hinge shaft through a bearing; the second upper hinge plate is fixed on the upper hinge shaft through a third shaft sleeve; the second lower hinge plate is arranged on the upper hinge shaft through a fourth shaft sleeve. The purpose of difficult damage is achieved.

Description

Upper hinge and side-rotating door using same

Technical Field

The utility model relates to a building field, more specifically say that it relates to an upward hinge page or leaf and uses the side-turn door of this hinge page or leaf.

Background

The side revolving door is commonly used in places such as hangars, warehouses and the like, and generally comprises a sky rail and a ground rail, and is provided with a plurality of door leaves which are fixed between the sky rail and the ground rail and connected through hinges. The gyro wheel on the door leaf and the cooperation of ground rail realize turning to the function. In the prior art, the hinge plate of the hinge can only rotate along the shaft and cannot move up and down along the shaft, so that when the door leaf encounters a pit or a bulge in the moving process, the door leaves on two sides of the hinge can apply axial force to the hinge, and the hinge is easily damaged.

SUMMERY OF THE UTILITY MODEL

In a first aspect, the present invention is directed to a side-turn door, which is not easy to be damaged.

The above technical purpose of the present invention can be achieved by the following technical solutions: an upper hinge comprises an upper hinge shaft, a second upper hinge plate, a second lower hinge plate and a guide wheel; the second upper leaf plate and the second lower leaf plate are respectively fixed on adjacent door leaves; the guide wheel is arranged at the upper end of the upper hinge shaft; the guide wheel is connected with the upper hinge shaft through a bearing; the second upper hinge plate is fixed on the upper hinge shaft through a third shaft sleeve; the second lower hinge plate is arranged on the upper hinge shaft through a fourth shaft sleeve.

The third axle sleeve and last hinge page or leaf axle interference fit make it fixed with last hinge page or leaf epaxial, the fourth axle sets up on last hinge page or leaf is epaxial, set up to except can rotating, can also realize axial rebound. Through the arrangement, the two adjacent door leaves connected with the hinge can independently move up and down, so that the hinge is prevented from being damaged due to uneven stress, and the service life can be prolonged. Set up the effect that plays the direction when leading wheel on the one hand removes, on the other hand can play the effect of fixed door leaf.

In a second aspect, the present invention provides a side revolving door, which comprises door leaves and hinge leaves, wherein the hinge leaves comprise the above-mentioned upper hinge leaf, the side revolving door comprises at least two door leaves, and the hinge leaves are arranged between the door leaves; the hinge page comprises a lower hinge page; the lower hinge is arranged below the door leaf; the lower hinge is provided with a roller.

The roller is arranged on the lower hinge, and compared with the respective installation of the roller and the hinge in the prior art, the roller and the hinge save the installation time, improve the installation efficiency and achieve the purpose of convenient installation and maintenance.

Furthermore, the lower ends of the head and the tail of the side revolving door are provided with lower hinge pages.

The hinged leaf is arranged at the lower end of the head door and the tail door of the side revolving door, so that the weight of the door leaf can be balanced.

Further, the lower hinge comprises a lower hinge shaft, a first upper hinge plate, a first lower hinge plate and a roller; the first upper leaf plate and the first lower leaf plate are respectively fixed with adjacent door leaves; the first upper hinge plate is sleeved on the lower hinge shaft through a first shaft; the first lower hinge plate is sleeved on the lower hinge shaft through a second shaft; the roller is arranged on the roller frame, and the roller frame is arranged at the lower end of the lower hinge shaft.

The scheme provides a specific implementation mode of connecting the lower hinge page with the roller. Under the condition that the lower hinge bears the weight of the door leaf, the arrangement in the scheme has the effect that the first shaft sleeve and the second shaft sleeve can rotate relative to the lower hinge shaft and cannot slide downwards along the lower hinge shaft. One possible arrangement mode is that a boss is arranged on the lower hinge shaft, so that the first shaft sleeve and the second shaft sleeve are limited on the boss, and an oil-free lubrication bearing can be arranged between the shaft sleeve and the lower hinge shaft in order to enable the first shaft sleeve and the second shaft sleeve to rotate smoothly; one possible implementation mode is that an axially stressed bearing is adopted, and an inner ring of the bearing is fixed on the lower hinge shaft; by the above mode, the weight of the door leaf can be transferred to the roller. In the case of a lower hinge bearing no door leaf weight, for example by a head rail; in one possible embodiment, the first shaft sleeve and the second shaft sleeve can move up and down along the lower hinge shaft, and in order to enable the first shaft sleeve and the second shaft sleeve to rotate smoothly, an oil-free bearing can be arranged between the shaft sleeves and the lower hinge shaft.

Further, an axle cavity is formed in the roller carrier, and a limiting hole is formed in the bottom of the axle cavity; the lower end of the lower hinge shaft is provided with a screw hole; the lower hinge shaft is inserted into the shaft cavity, and the bolt penetrates through the limiting hole and is arranged in the screw hole; the limiting hole can move relative to the bolt. This scheme can summarise for the higher level: the roller frame can move up and down relative to the lower hinge shaft.

In this scheme, the weight of hinge page axle under the axle chamber bears, and then bears door leaf weight. In the prior art, the rollers are directly fixed with the door leaf, the rollers walk to a low-lying area on the lower hinge, the adjacent rollers are on a normal horizontal plane, and the rollers are suspended and are easy to separate from the track. By adopting the scheme, the upper roller of the lower hinge page travels to a low-lying section, the lower hinge pages on two adjacent sides bear the weight of the door leaf to keep the door leaf on the original horizontal plane, and the lower hinge page shaft is kept on the same horizontal plane; because the roller carrier can move up and down relative to the lower hinge shaft, the roller can continuously run in the rail at the low end of the low position, and the phenomenon of derailment can not be generated.

Further, the device also comprises a bidirectional thrust bearing; the bidirectional thrust bearing comprises a shaft ring, an upper base and a lower base; a bearing cavity is arranged on the roller carrier and is coaxial with the shaft cavity; the bearing cavity is arranged above the shaft cavity; the diameter of the bearing cavity is larger than that of the shaft cavity; the bidirectional thrust bearing is arranged in the bearing cavity; the lower base is arranged at the bottom of the bearing cavity; a first bulge is arranged on the lower hinge shaft; the first bulge is arranged on the shaft ring; the second shaft sleeve is arranged on the upper base; the lower hinge is also provided with a second bulge; the first shaft sleeve is arranged on the second bulge.

The scheme can be further generalized in an upper level that the lower hinge shaft bears the pressure of the first shaft sleeve; the roller carrier bears the pressure of the second shaft sleeve through a bidirectional thrust bearing; the roller carrier bears the pressure of the lower hinge shaft through a bidirectional thrust bearing. The first shaft sleeve and the lower hinge shaft can slide relatively; the second shaft sleeve and the lower hinge shaft can slide relatively; the roller frame and the lower hinge shaft can slide relatively; the bidirectional thrust bearing can slide relative to the lower hinge shaft; the sliding finger is that the lower hinge shaft slides upwards. Through the scheme, the side revolving door is not easy to derail. The following two cases are specifically classified: in the first situation, the upper roller of the lower hinge page runs to a low-lying area, due to the supporting effect of the adjacent lower hinge page on the door leaves on two sides, the first shaft sleeve and the second shaft sleeve are positioned on the original horizontal plane, the lower hinge page shaft and the roller slide downwards under the action of gravity, and the roller enters a track of the low-lying area and cannot derail due to suspension. In the second situation, the roller of the lower hinge leaves runs to the raised section, the lower hinge leaves integrally move upwards to drive the door leaves on two sides to move upwards, and the first shaft sleeve and the second shaft sleeve can slide upwards relative to the hinge leaves, so that the lower hinge leaves cannot lift the roller on the lower hinge leaves on two adjacent sides off the ground, and the lower hinge leaves on the two adjacent sides are prevented from being separated from the track.

Furthermore, a front guide wheel is further arranged on the roller carrier.

Through setting up the front idler, can make the gyro wheel turn to more smoothly in the track.

Further, the hinge page comprises a middle hinge page; the middle hinge comprises a middle hinge shaft, a third upper page plate and a third lower page plate; the third upper hinge plate is fixed on the middle hinge shaft through a fifth shaft sleeve; the third lower hinge plate is arranged on the middle hinge shaft through a sixth shaft sleeve; the third upper leaf plate and the third lower leaf plate are respectively fixed on adjacent door leaves.

Through the scheme, the door leaves on two sides can independently move up and down, and the running stability of the door leaves is improved.

Furthermore, the side revolving door also comprises a rectangular pipe, and the rectangular pipe is arranged at the tail part of the side revolving door and is connected with the door leaf through a hinge.

The width of side revolving door leaf is fixed, in order to make the door that the side revolving door can adapt to different width, can fill the not enough space that causes of door leaf width through the rectangular pipe, plays sealed effect.

Further, the device comprises a rectangular framework, a filling plate and a small window; the small window comprises a window frame, the window frame is arranged in the framework and is welded and reinforced through a fixing hole arranged on the framework; the infill panel comprises a core panel and face panels, the face panels comprising a first face panel and a second face panel; the core plate is arranged between the first panel and the second panel; the filling plate is arranged between the frameworks.

Above-mentioned scheme provides specific door leaf structure, has simple structure simple to operate's effect.

The "upper" of the "upper hinge" in the claims of the present invention does not limit the scope of the claims.

Drawings

FIG. 1 is a schematic view of a bottom hinge

FIG. 2 is a cross-sectional view of the lower hinge

FIG. 3 is a schematic view of the hinge (partially cut)

FIG. 4 is a schematic view of a hinge (partially cut)

FIG. 5 is a schematic view of the side-turn door according to the embodiment

FIG. 6 is a partial enlarged view of FIG. 5

In the figure: 1. hinging the page downwards; 10. a lower hinge shaft; 101. a first protrusion; 102. a second protrusion; 11. a first upper sheet; 111. a first bushing; 12. a first lower leaf plate; 121. a second shaft sleeve; 13. a roller frame; 131. a roller; 132. a limiting hole; 133. a front guide wheel mounting frame; 134. a front guide wheel; 135. a roller shaft; 136. a shaft cavity; 141. a shaft ring; 142. an upper base; 143 a lower base; 15. a first large pad; 16. a small pad; 2. hinging up; 20. an upper hinge shaft; 201. a guide wheel; 21. a second upper sheet; 211. a third shaft sleeve; 22. a second lower sheet; 221. a fourth shaft sleeve; 23. a second large pad; 3. a middle hinge page; 30. a middle hinge shaft; 31. a third upper sheet; 311. a fifth shaft sleeve; 32. a third lower sheet; 321. a sixth shaft sleeve; 33. a third large pad; 4. a door leaf; 41. a rectangular tube; 42. and (4) a sky rail.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly or indirectly connected to the other element, and the "connection" does not limit the fixed connection or the movable connection, and the specific connection mode should be determined according to the specific technical problem to be solved.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Examples

The embodiment of the first aspect provides a lower hinge page 1, the lower hinge page 1 is provided with a roller 131, the lower hinge page 1 comprises a first upper page plate 11, a first lower page plate 12 and a lower hinge page shaft 10; the roller 131 is slidable with respect to the lower hinge shaft 10. The top of the lower hinge shaft 10 is provided with a first large gasket 15, the diameter of the first large gasket 15 is larger than that of the lower hinge shaft 10, the first large gasket 15 is fixed on the lower hinge shaft 10 through a bolt, and the first large gasket 15 can prevent the lower hinge shaft 10 from separating.

The first upper hinge plate 11 is sleeved on the lower hinge shaft 10 through a first shaft sleeve 111, and the first shaft sleeve 111 can rotate relative to the lower hinge shaft 10; in order to make the rotation smoother, a bearing is arranged between the first shaft sleeve 111 and the lower hinge shaft 10, and preferably, an oil-free lubrication bearing can be selected, and the volume of the oil-free lubrication bearing is small, so that the space occupied by the device can be reduced. The lower hinge shaft 10 is provided with a second protrusion 102, the second protrusion 102 is provided with a small gasket 16, the first boss 111 is provided on the second protrusion 102, and the second protrusion 102 can bear the pressure of the first boss 111. The first sleeve 111 can slide between the first large shim 15 and the small shim 16.

The roller 131 is connected to the lower hinge shaft 10 through a roller frame 13. The roller frame 13 is provided with a roller shaft 135, the roller shaft 135 is provided with a bearing, and a roller 131 is sleeved on the bearing. The roller frame 13 is further provided with a leading wheel 134 mounting frame 133, and the leading wheel 134 is mounted on the leading wheel 134 mounting frame 133. The upper end of the roller frame 13 is provided with a shaft cavity 136, and the bottom of the shaft cavity 136 is provided with a limiting hole 132; the lower end of the lower hinge shaft 10 is provided with a screw hole; the lower hinge shaft 10 is inserted into the shaft cavity 136, and the bolt penetrates through the limiting hole 132 and is arranged in the screw hole; the limiting hole 132 can move relative to the bolt. The head of the bolt prevents the roller frame 13 from being completely separated from the lower hinge shaft 10. A bearing is arranged between the shaft cavity 136 and the lower hinge shaft 10, and preferably an oil-free bearing is adopted.

The roller carrier 13 is provided with a bearing cavity, and the bearing cavity and the shaft cavity 136 are coaxially arranged; the bearing cavity is disposed above the shaft cavity 136; the bearing cavity diameter is greater than the shaft cavity 136; a bidirectional thrust bearing is placed in the bearing cavity; the bidirectional thrust bearing comprises a shaft ring 141, an upper base 142 and a lower base 143; the lower base 143 is arranged at the bottom of the bearing cavity; the bearing cavity bears the pressure of the bidirectional thrust bearing; a first bulge 101 is arranged on the lower hinge shaft 10; the first protrusion 101 is disposed on the collar 141; the collar 141 bears the pressure of the lower hinge shaft 10.

The first lower hinge plate 12 is sleeved on the lower hinge shaft 10 through a second shaft sleeve 121, and the second shaft sleeve 121 can rotate relative to the lower hinge shaft 10; in order to make the rotation smoother, a bearing is provided between the first shaft sleeve 111 and the lower hinge shaft 10, and preferably, an oil-free bearing may be selected. The second shaft sleeve 121 is arranged on the upper base 142 of the bidirectional thrust bearing; the upper base 142 receives the pressure of the second bushing 121. The second sleeve 121 may slide between the upper base 142 and the small pad 16.

By adopting the lower hinge 1 provided by the embodiment, the roller 131, the lower hinge shaft 10, the first upper leaf 11 and the first lower leaf 12 can move upwards in the axial direction of the lower hinge shaft 10 relatively independently, so that the lower hinge shaft 10 has stronger flexibility and the roller 131 is not easy to derail when in rail running. The hinge provided by the scheme has the advantages that the roller 131 is arranged on the hinge, so that the roller 131 is not required to be arranged after the hinge is arranged, the hinge is convenient to install and maintain,

the embodiment of the second aspect provides an upper hinge 2 with a guide wheel 201, the upper hinge 2 comprises an upper hinge shaft 20, a second upper sheet 21, a second lower sheet 22 and the guide wheel 201;

the upper portion of the upper hinge shaft 20 is sleeved with a ball bearing, and the ball bearing is in interference fit with the upper hinge shaft 20, so that the ball bearing is not easy to separate from the upper hinge shaft 20. In order to make the ball bearing more stable, on the upper hinge shaft 20, the upper and lower ends of the installation position of the ball bearing are provided with pin holes, pins are arranged in the pin holes, and the position of the ball bearing is further fixed through the pins. The outside of the ball bearing is sleeved with a guide wheel 201.

The second upper page plate 21 is sleeved on the upper hinge shaft 20 through a third shaft sleeve 211; the third shaft sleeve 211 is in interference fit with the upper hinge shaft 20, so that the third shaft sleeve 211 and the upper hinge shaft 20 are prevented from rotating relatively. In order to further fix the third shaft housing 211, the third shaft housing 211 is provided with a pin hole penetrating through the third shaft housing 211 and the upper hinge shaft 20, and the third shaft housing 211 is fixed by a pin inserted into the pin hole.

The second lower plate 22 is sleeved on the upper hinge shaft 20 through a fourth shaft sleeve 221. A bearing is arranged between the fourth shaft sleeve 221 and the upper hinge shaft 20, and preferably, an oil-free bearing is adopted. The fourth bushing 221 is rotatable with respect to the upper hinge shaft 20. The lower end of the upper hinge shaft 20 is fixed with a second large spacer 23 by a bolt. The fourth bushing 221 is slidable between the second large spacer 23 and the third bushing 211.

The guide wheel 201 can play a role in auxiliary fixing and guiding. The fourth shaft sleeve 221 and the third shaft sleeve 211 in the scheme can move relatively in a certain range, so that the upper hinge leaf 2 is higher in flexibility, and the problem that the local stress of the upper hinge leaf 2 is too large and is broken due to the fluctuation of the bottom surface is avoided during use.

The third aspect of the present embodiment provides a middle hinge 3, the middle hinge 3 includes a middle hinge shaft 30, a third upper sheet 31, a third lower sheet 32;

the third upper page plate 31 is fixed on the middle hinge shaft 30 through a fifth shaft sleeve 311; the fifth shaft sleeve 311 is in interference fit with the middle hinge 3, and the fifth shaft sleeve 311 and the middle hinge 3 are placed to rotate relatively. In order to further fix the fifth shaft sleeve 311, a pin hole penetrating the fifth shaft sleeve 311 and the middle hinge shaft 30 is formed in the fifth shaft sleeve 311, and the fifth shaft sleeve 311 is fixed by a pin inserted into the pin hole.

The third lower leaf plate 32 is provided on the middle hinge shaft 30 through a sixth bushing 321. A bearing is disposed between the sixth shaft sleeve 321 and the middle hinge shaft 30, and preferably an oil-free bearing is used. The sixth bushing 321 can rotate relative to the middle hinge 3, and the third large spacer 33 is fixed to the lower end of the middle hinge shaft 30 by a bolt. The sixth sleeve 321 is slidable between the third large washer 33 and the fifth sleeve 311.

In the middle hinge leaf 3 provided by the embodiment, the third upper leaf plate 31 and the third lower leaf plate 32 can slide relatively, so that the problem that the local stress of the middle hinge leaf 3 is too large and breaks due to ground fluctuation can be avoided during use.

Fourth aspect this embodiment provides a side door, which comprises at least two door leaves 4, wherein the door leaves 4 are connected by the lower hinge leaf 1, the upper hinge leaf 2 and the middle hinge leaf 3 provided in this embodiment. The upper leaf plate and the lower leaf plate on the hinge are respectively connected with the adjacent door leaves 4. The side-turn door is provided with door leaves 4 from head to tail, and one side of each door leaf 4 without the adjacent door leaf 4 is provided with a lower hinge 1. Because the width of the door is not consistent, in order to make the side revolving door produced in a standardized way have stronger adaptability, the tail part of the side revolving door is provided with a rectangular pipe 41, and the rectangular pipe 41 can use different widths according to the width of the door.

The upper hinge 2 is arranged at the upper part of the door leaf 4, and the guide wheel 201 is arranged in the sky rail 42;

the lower hinge 1 is arranged at the lower part of the door leaf 4 and plays a role of supporting and moving the door leaf 4, and the roller 131 on the lower hinge 1 is matched with the ground rail.

The middle hinge 3 is arranged in the middle of the door leaf 4.

The lower hinge leaf 1 with the guide wheel 201 can be arranged at the head and the tail of the side revolving door.

The door leaf 4 comprises a rectangular framework and a filling plate; the infill panel comprises a core panel and face panels, the face panels comprising a first face panel and a second face panel; the core plate is arranged between the first panel and the second panel; the filling plate is arranged between the frameworks. The framework is formed by welding C-shaped steel and is rectangular. And a hinge mounting plate is arranged at the hinge mounting position of the C-shaped steel welded framework and on the inner side of the C-shaped steel groove. The hinge mounting plate is welded on the inner side of the groove, the weight of the door leaf 4 can be better transferred to the hinge through the hinge mounting plate, and a screw for placing and mounting the hinge is broken due to overlarge local stress.

Through this embodiment scheme, can make this side revolving door be difficult for derailing. The following two cases are specifically classified: in the first situation, the upper roller 131 of the lower hinge leaf 1 travels to a low-lying area, due to the supporting effect of the adjacent lower hinge leaf 1 on the door leaves 4 on two sides, the first shaft sleeve 111 and the second shaft sleeve 121 are positioned on the original horizontal plane, the lower hinge leaf shaft 10 and the roller 131 slide downwards under the action of gravity, and the roller 131 enters the track of the low-lying area and cannot derail due to suspension. In the second situation, the roller 131 of the lower hinge 1 travels to a convex section, the wheel of the lower hinge 1 moves upward as a whole to drive the door leaves 4 on both sides to move upward, and the first shaft sleeve 111 and the second shaft sleeve 121 can slide upward relative to the hinge shaft, so that the wheel of the lower hinge 1 cannot lift the roller 131 on the lower hinge 1 on the adjacent two sides off the ground, and the wheel of the lower hinge 1 on the adjacent two sides is prevented from separating from the track. The upper hinge leaf 2 and the upper leaf plate and the lower leaf plate on the middle hinge leaf 3 can slide relatively, and the adjacent door leaves 4 can be lifted independently by the mutual matching of the upper hinge leaf, the middle hinge leaf and the lower hinge leaf 1, so that the side revolving door provided by the embodiment can run stably and is not easy to derail.

The utility model discloses in C shaped steel designs steel for proper motion. Similar with the channel-section steel structure, it is thinner than the channel-section steel, satisfy the side revolving door structural strength and size of a dimension can.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (6)

1. An upper hinge page is characterized in that: the upper hinge (2) comprises an upper hinge shaft (20), a second upper sheet (21), a second lower sheet (22) and a guide wheel (201); the second upper leaf plate (21) and the second lower leaf plate (22) are respectively fixed on the adjacent door leaves (4); the guide wheel (201) is arranged at the upper end of the upper hinge shaft (20); the guide wheel (201) is connected with the upper hinge shaft (20) through a bearing; the second upper page plate (21) is fixed on the upper hinge shaft (20) through a third shaft sleeve (211); the second lower page plate (22) is arranged on the upper hinge shaft (20) through a fourth shaft sleeve (221).

2. A side-turn door comprising a door leaf (4) and a hinge, said hinge comprising an upper hinge (2) according to claim 1, characterized in that: comprises at least two door leaves (4), and a hinge is arranged between the door leaves (4); the upper hinge (2) is arranged above the door leaf (4); the hinge also comprises a lower hinge (1); the lower hinge (1) is arranged below the door leaf (4); the lower hinge (1) is provided with a roller (131).

3. A side-swinging door as claimed in claim 2, wherein: the lower ends of the head and the tail of the side revolving door are provided with lower hinges (1).

4. A side-swinging door as claimed in claim 2, wherein: the lower hinge (1) comprises a lower hinge shaft (10), a first upper page plate (11), a first lower page plate (12) and a roller (131); the first upper leaf plate (11) and the first lower leaf plate (12) are respectively fixed on the adjacent door leaves (4);

the first upper hinge plate (11) is arranged on the lower hinge shaft (10) through a first shaft sleeve (111); the first lower hinge plate (12) is arranged on the lower hinge shaft (10) through a second shaft sleeve (121);

the roller (131) is arranged on the roller frame (13), and the roller frame (13) is arranged at the lower end of the lower hinge shaft (10).

5. The side door of claim 4, wherein: a shaft cavity (136) is formed in the roller carrier (13), and a limiting hole (132) is formed in the bottom of the shaft cavity (136); the lower end of the lower hinge shaft (10) is provided with a screw hole;

the lower hinge shaft (10) is inserted into the shaft cavity (136), and the bolt penetrates through the limiting hole (132) and is arranged in the screw hole; the limiting hole (132) can move relative to the bolt.

6. A side-swinging door as claimed in claim 5, wherein: the bidirectional thrust bearing is also included; the bidirectional thrust bearing comprises a shaft ring (141), an upper base (142) and a lower base (143);

a bearing cavity is arranged on the roller carrier (13), and the bearing cavity and the shaft cavity (136) are coaxially arranged; the bearing cavity is arranged above the shaft cavity (136); the diameter of the bearing cavity is larger than that of the shaft cavity (136); the bidirectional thrust bearing is arranged in the bearing cavity; the lower base (143) is arranged at the bottom of the bearing cavity;

a first bulge (101) is arranged on the lower hinge shaft (10); the first bulge (101) is arranged on the shaft ring (141);

the second shaft sleeve (121) is arranged on the upper base (142);

the lower hinge (1) is also provided with a second bulge (102); the first shaft sleeve (111) is arranged on the second bulge (102).

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