CN111021281A

CN111021281A - Beating door

Info

Publication number: CN111021281A
Application number: CN201911170548.XA
Authority: CN
Inventors: 李茂�; 张俊明; 彭树林
Original assignee: Guangdong Huazhiyuan Information Engineering Co ltd; Guangzhou Huajia Software Co Ltd; Guangzhou Jiadu Urban Rail Intelligent Operation And Maintenance Service Co Ltd; Guangzhou Xinke Jiadu Technology Co Ltd
Current assignee: Guangdong Huazhiyuan Information Engineering Co ltd; Guangzhou Huajia Software Co Ltd; Guangzhou Jiadu Urban Rail Intelligent Operation And Maintenance Service Co Ltd; Guangzhou Xinke Jiadu Technology Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-04-17
Anticipated expiration: 2039-11-26
Also published as: CN111021281B; WO2021103844A1

Abstract

The invention discloses a flapping door, which comprises a flapping door component, a door plate driving system used for driving the flapping door component, and a reset device capable of selectively driving the flapping door component to rotate and reset, wherein the reset device is set to be capable of driving the flapping door component to rotate but not driving the flapping door component and the door plate driving system to rotate simultaneously. The door is beaten in the bat that provides in this scheme, beats door subassembly and is connected with the transmission of door plant actuating system under the circular telegram circumstances, and resetting means can't drive simultaneously and pat door subassembly and door plant actuating system rotation, therefore pat the door subassembly and receive door plant actuating system's control to swing, pat the door subassembly and break away from with door plant actuating system under the outage circumstances, pat the door subassembly and receive resetting means's effort and reset.

Description

Beating door

Technical Field

The invention relates to the technical field of access control systems, in particular to a flapping door.

Background

At present, the door beating unit has wide application in the fields of entrance guard, automatic ticket checking equipment and track traffic equipment. The patting door unit is an AFC special module integrating light, mechanical and electrical technologies, is arranged in a gate machine, is used as a blocking mechanism to effectively control the access behaviors of pedestrians and passengers, only allows the persons with legal authorization to pass, and provides quick ticket checking and access service for the passengers.

Pat a door structure complicacy among the prior art, the security is not high, and life is short, leads to clapping the application of door and is difficult to the large tracts of land and promotes.

Disclosure of Invention

The embodiment of the invention aims to: provided is a slap door which can solve the above technical problems existing in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a flap door, including flap door subassembly and be used for the drive flap door subassembly's door plant actuating system, its characterized in that still includes selective drive flap the rotatory resetting means who resets of door subassembly, resetting means sets up to can drive flap door subassembly rotates and can't drive simultaneously flap door subassembly and door plant actuating system rotates.

As a preferable technical solution of the flap door, the door panel driving system includes a clutch type spindle transmission system connecting the flap door assembly and the power device; the clutch type spindle transmission system comprises a first clutch component and a second clutch component which can be in selective transmission connection; the first clutch assembly is in transmission connection with the power device, and the second clutch assembly is in transmission connection with the flapping door assembly; the resetting device is connected with the second clutch assembly and drives the flapping door assembly to rotate by driving the second clutch assembly to rotate.

As a preferred technical scheme of clapping the door, resetting means's power device is the extension spring, the initial pretightning force of extension spring sets up to driving second clutch components and it is rotatory to clap the door subassembly, and can not drive simultaneously first clutch components power device second clutch components and it is rotatory to clap the door subassembly.

As a preferred technical scheme of slapping the door, first clutch subassembly include lower rim plate, second clutch subassembly include with the relative last disc that sets up of lower rim plate, lower rim plate with last disc is electromagnetic attraction structure, under the on-state go up the disc with lower rim plate looks actuation.

As an optimal technical scheme of the flapping door, an elastic limiting device is arranged on the lower wheel disc, the elastic limiting device is set to be always used for pushing the upper wheel disc away from the lower wheel disc under the action of acting force, and the elastic limiting device pushes the lower wheel disc away from the upper wheel disc in a power-off state.

As a preferable technical solution of the flapping door, a rotation limiting device for limiting the relative rotation between the lower wheel disc and the upper disc is arranged between the opposite surfaces of the lower wheel disc and the upper disc.

As a preferable technical solution of the slapping door, the rotation limiting device includes a first saw tooth disposed on a surface of the lower wheel disc facing the upper wheel disc and a second saw tooth disposed on a surface of the upper wheel disc facing the lower wheel disc, and the first saw tooth and the second saw tooth are selectively engageable to limit relative rotation between the lower wheel disc and the upper wheel disc.

As a preferable technical solution of the beater door, the beater door further comprises a rotation limiting mechanism for limiting a rotation angle of the beater door assembly, and the rotation limiting mechanism is disposed between the clutch type spindle transmission system and the beater door assembly.

As a preferred technical scheme of patting door, rotatory stop gear including the fixed spacing mounting panel that sets up and for the spacing flange of the rotatable setting of spacing mounting panel, spacing flange for the rotation angle of spacing mounting panel is adjustable, separation and reunion formula main shaft transmission system passes spacing mounting panel with spacing flange transmission is connected.

As a preferable technical solution of the flapping door, the limiting mounting plate is provided with a limiting groove, the limiting flange is provided with a limiting protrusion corresponding to the limiting groove, and the limiting flange can rotate in a range limited by the limiting groove and the limiting protrusion relative to the limiting mounting plate.

As a preferable technical solution of the flapping door, the limiting groove is an arc groove whose center coincides with an axis of rotation of the limiting flange relative to the limiting mounting plate, and a central angle corresponding to the arc groove determines an angle at which the limiting flange can rotate relative to the limiting mounting plate.

As a preferred technical scheme of patting the door, the spacing mounting panel goes up towards spacing flange's direction protrusion is provided with the installation arch, the arc wall sets up in the installation arch.

As a preferable technical scheme of the flapping door, a limit adjusting screw for adjusting the length of the arc-shaped groove is arranged on the limit mounting plate; the mounting protrusion is provided with a threaded hole communicated with the arc-shaped groove, and the limiting adjusting screw can be selectively inserted into the threaded hole to adjust the length of the arc-shaped groove.

As a preferable technical solution of the flap door, the door panel driving system includes a first transmission system and a second transmission system connected by a clutch type main shaft transmission system; the clutch type spindle transmission system is freely arranged, a first self-aligning bearing is arranged on the first transmission system, and a second self-aligning bearing is arranged at the end part, far away from the first transmission system, of the second transmission system.

As an optimal technical scheme of the slapping door, the first transmission system comprises a transmission shaft, a first thrust bearing is arranged at the end part of the transmission shaft, which is far away from the clutch type main shaft transmission system, and the first self-aligning bearing is arranged on the transmission shaft between the first thrust bearing and the clutch type main shaft transmission system.

As a preferable technical scheme of the flap door, the flap door further comprises a clutch fixing flange for fixing the clutch type main shaft transmission system, and the transmission shaft is fixedly connected with the clutch fixing flange.

As a preferred technical scheme of the flap door, the second transmission system comprises a main shaft for installing the flap door and a transfer shaft for connecting the main shaft with the clutch type main shaft transmission system, and the second self-aligning bearing is arranged at the end part of the main shaft far away from the transfer shaft.

As a preferable technical solution of the flap door, an end of the adapter shaft facing the clutch type spindle transmission system is fixedly connected to the clutch type spindle transmission system, and a second thrust bearing is disposed on the adapter shaft.

As a preferable technical solution of the flap door, the clutch type main shaft transmission system includes a clutch adjustment shaft, and two ends of the clutch adjustment shaft are respectively connected to the clutch fixing flange and the transfer shaft.

The invention has the beneficial effects that: the door is beaten in the bat that provides in this scheme, beats door subassembly and is connected with the transmission of door plant actuating system under the circular telegram circumstances, and resetting means can't drive simultaneously and pat door subassembly and door plant actuating system rotation, therefore pat the door subassembly and receive door plant actuating system's control to swing, pat the door subassembly and break away from with door plant actuating system under the outage circumstances, pat the door subassembly and receive resetting means's effort and reset.

The clutch type main shaft transmission system cannot transmit the upper disc and the lower disc to each other in a separated state, and the part connected with the upper disc only needs small acting force for rotating motion and resetting motion independently, so that the resetting acting force continuously applied to the part can be reduced.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1 is a schematic perspective view of an exploded status of a patting door according to an embodiment of the invention.

FIG. 2 is a sectional view of the transmission connection structure of the flapping door according to the embodiment of the invention.

Fig. 3 is an exploded view of the rotation limiting mechanism according to the embodiment of the present invention.

Fig. 4 is a schematic diagram of a limiting installation plate structure according to an embodiment of the present invention.

Fig. 5 is a schematic perspective view of a clutch type spindle transmission system according to an embodiment of the present invention.

Fig. 6 is an exploded view of the clutch type spindle transmission system according to the embodiment of the present invention.

Fig. 7 is a schematic diagram of a clutch type spindle transmission system according to an embodiment of the invention in a further disassembled state.

FIG. 8 is a sectional view of the clutch type spindle drive system according to the embodiment of the present invention in an assembled state.

In the figure:

100. a main shaft; 200. flapping the door assembly; 210. a motor; 220. a first self-aligning bearing; 230. a second self-aligning bearing; 240. a first thrust bearing; 250. a second thrust bearing; 260. a drive shaft; 300. a door panel drive system; 400. a resetting device; 410. a tension spring; 420. a tension spring hanging rod; 500. a clutch type main shaft transmission system; 510. a lower wheel disc; 520. an elastic limiting device; 530. a clutch fixing flange; 540. a mounting ring; 550. an upper disc; 560. a clutch spindle; 600. a rotation limiting mechanism; 610. a limiting mounting plate; 611. a groove; 612. a limiting groove; 613. limiting and adjusting screws; 614. mounting a boss; 620. a limiting flange; 621. a limiting bulge; 700. and (4) transferring the shaft.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "fixed" are to be understood broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1-8, the present embodiment provides a beater door, comprising a beater door assembly 200 and a door panel driving system 300 for driving the beater door assembly 200, further comprising a reset device 400 capable of selectively driving the beater door assembly 200 to rotate and reset, wherein the reset device 400 is configured to drive the beater door assembly 200 to rotate but not drive the beater door assembly 200 and the door panel driving system 300 to rotate simultaneously.

The patting door that provides in this scheme, patting door subassembly 200 and door plant actuating system 300 transmission under the circular telegram circumstances is connected, and resetting means 400 can not drive simultaneously and pat door subassembly 200 and door plant actuating system 300 rotation, therefore pat door subassembly 200 and swing by door plant actuating system 300's control, pat door subassembly 200 and door plant actuating system 300 and break away from under the outage circumstances, pat door subassembly 200 and reset by resetting means 400's effort.

Specifically, the door panel driving system 300 of the present embodiment includes a clutch type spindle transmission system 500 connecting the flapping door assembly 200 and the power device; the clutch type spindle transmission system 500 comprises a first clutch component and a second clutch component which can be selectively connected in a transmission manner; the first clutch assembly is in transmission connection with the power device, and the second clutch assembly is in transmission connection with the flapping door assembly 200; the resetting device 400 is connected to the second clutch assembly, and drives the flapping door assembly 200 to rotate by driving the second clutch assembly to rotate.

The power device of the reset device 400 is a tension spring 410, the initial pre-tightening force of the tension spring 410 is set to be capable of driving the second clutch component and the flapping door component 200 to rotate, and the first clutch component, the power device, the second clutch component and the flapping door component 200 cannot be driven simultaneously to rotate.

In this embodiment, the door driving system 300 adopts the motor 210 as a power device, the tension spring 410 as a power device of the reset device 400, one end of the tension spring 410 is fixedly mounted on the driving system bracket for mounting the door driving system 300 through the tension spring hanging rod 420, and the other end is in transmission connection with the flapping door assembly 200. When the clapping door assembly 200 is driven to rotate by the door panel driving system 300, the tension spring 410 is stretched, and when the clapping door assembly 200 is restored to the initial position by the door panel driving system 300, the tension spring 410 is restored to the initial state.

The first clutch component comprises a lower wheel disc 510, the second clutch component comprises an upper disc 550 which is arranged opposite to the lower wheel disc 510, the lower wheel disc 510 and the upper disc 550 are of an electromagnetic attraction structure, and the upper disc 550 and the lower wheel disc 510 are attracted in an electrified state.

The clutch type spindle transmission system 500 cannot be mutually transmitted between the upper disc 550 and the lower disc 510 in a state of being separated from each other, and at the moment, the part connected with the upper disc 550 only needs small acting force for rotating motion and resetting motion, so that the resetting acting force continuously applied to the part can be reduced.

The lower wheel disc 510 is provided with an elastic limiting device 520, the elastic limiting device 520 is set to enable acting force to always push the upper wheel disc 550 and the lower wheel disc 510 away from each other, and the elastic limiting device 520 pushes the lower wheel disc 510 away from the upper wheel disc 550 in a power-off state. A rotation limiting device for limiting the relative rotation between the lower wheel disc 510 and the upper disc 550 is arranged between the opposite surfaces of the two. The rotation limiting means includes first saw teeth provided on a surface of the lower disc 510 facing the upper disc 550 and second saw teeth provided on a surface of the upper disc 550 facing the lower disc 510, the first saw teeth and the second saw teeth being selectively engageable to limit relative rotation between the lower disc 510 and the upper disc 550.

The first clutch assembly further comprises a clutch fixing flange 530 in transmission connection with the lower wheel disc 510, a mounting ring 540 is arranged between the clutch fixing flange 530 and the lower wheel disc 510, and the elastic limiting device 520 is arranged on the mounting ring 540.

Specifically, the beater door of the present embodiment further includes a rotation limiting mechanism 600 for limiting a rotation angle of the beater door assembly 200, and the rotation limiting mechanism 600 is disposed between the clutch type spindle transmission system 500 and the beater door assembly 200.

The rotation limiting mechanism 600 comprises a fixedly arranged limiting mounting plate 610 and a limiting flange 620 which is rotatably arranged relative to the limiting mounting plate 610, the rotation angle of the limiting flange 620 relative to the limiting mounting plate 610 is adjustable, and the clutch type spindle transmission system 500 penetrates through the limiting mounting plate 610 to be in transmission connection with the limiting flange 620.

The limiting mounting plate 610 is provided with a limiting groove 612, the limiting flange 620 is provided with a limiting protrusion 621 corresponding to the limiting groove 612, and the limiting flange 620 can rotate in a range defined by the limiting groove 612 and the limiting protrusion 621 relative to the limiting mounting plate 610.

The limiting groove 612 is an arc-shaped groove with a circle center coinciding with the axis of the limiting flange 620 rotating relative to the limiting mounting plate 610, and a circle center angle corresponding to the arc-shaped groove determines an angle at which the limiting flange 620 can rotate relative to the limiting mounting plate 610.

The limiting installation plate 610 is provided with an installation protrusion 614 protruding towards the limiting flange 620, and the arc-shaped groove is arranged in the installation protrusion 614. The limiting mounting plate 610 is provided with a limiting adjusting screw 613 for adjusting the length of the arc-shaped groove. The mounting protrusion 614 is provided with a threaded hole communicated with the arc-shaped groove, and the limiting adjusting screw 613 can be selectively inserted into the threaded hole to adjust the length of the arc-shaped groove.

Specifically, in this embodiment, the number of the limiting adjusting screws 613 is two, and the two limiting adjusting screws are respectively disposed at two ends of the arc-shaped groove. Grooves 611 are arranged at two ends of the mounting protrusion 614 corresponding to the arc-shaped groove, and the threaded holes are arranged on the side walls of the grooves 611 facing the arc-shaped groove. The two limit adjusting screws 613 have different pitches.

The pitch through with two spacing adjusting screw 613 in this scheme sets up to the difference for the precision range that two spacing adjusting screw 613 can be adjusted is different, for example, when the degree of depth that needs adjust spacing adjusting screw 613 by a wide margin and stretch into the arc wall, the spacing adjusting screw that adjusting screw pitch is big realizes quick adjustment, when adjusting on a large scale and accomplishing the back and need accurate regulation to a certain rotation angle, the spacing adjusting screw that adjusting screw pitch is little is in order to guarantee to adjust the accuracy.

In the scheme, the limiting groove 612 is formed in the limiting mounting plate 610, the limiting protrusion 621 is formed in the limiting flange 620, the rotating range of the limiting flange 620 in the rotating process relative to the limiting mounting plate 610 is the moving range of the limiting protrusion 621 in the limiting groove 612, and therefore the rotating angle of the limiting flange 620 can be limited, and the rotating angle of the adapter shaft 700 fixedly connected with the limiting flange 620 is limited.

Simultaneously, set up spacing groove 612 in this scheme and move towards at spacing mounting panel 610 the surface of spacing flange 620, spacing arch 621 sets up in the one side of spacing flange 620 towards spacing mounting panel 610, under the relative equipment's of spacing flange 620 and spacing mounting panel 610 condition, spacing arch 621 and spacing groove 612 are located between spacing flange 620 and the spacing mounting panel 610, can't observe in the external world, have played the effect of hiding stop gear. Therefore, the influence of foreign object interference on limiting can be avoided, and the influence of dust and the like on the working effect of the limiting mechanism is avoided.

In the scheme, the door panel driving system comprises a first transmission system and a second transmission system which are connected by a clutch type main shaft transmission system 500; the clutch type spindle transmission system 500 is freely arranged, the first transmission system is provided with a first self-aligning bearing 220, and the end part of the second transmission system far away from the first transmission system is provided with a second self-aligning bearing 230. The first transmission system comprises a transmission shaft 260, a first thrust bearing 240 is arranged at the end part of the transmission shaft 260, which is far away from the clutch type spindle transmission system 500, and the first self-aligning bearing 220 is arranged on the transmission shaft 260 between the first thrust bearing 240 and the clutch type spindle transmission system 500. The second transmission system comprises a main shaft 100 for installing a flap door and an adapter shaft 700 for connecting the main shaft 100 with the clutch type main shaft transmission system 500, and the second self-aligning bearing 230 is arranged at the end part of the main shaft 100 far away from the adapter shaft 700.

The transmission shaft 260 is fixedly connected with the clutch fixing flange 530. The end of the transfer shaft 700 facing the clutch type spindle transmission system 500 is fixedly connected with the clutch type spindle transmission system 500, and a second thrust bearing 250 is arranged on the transfer shaft 700. The clutch type spindle transmission system 500 includes a clutch aligning shaft 560, and both ends of the clutch aligning shaft 560 are respectively connected to the clutch fixing flange 530 and the transfer shaft 700.

In the scheme, a second self-aligning bearing 230 is arranged above a main shaft 100, the lower part of the main shaft 100 is connected with an adapter shaft 700, a second thrust bearing 250 is arranged below the adapter shaft 700, the adapter shaft 700 is connected with a clutch self-aligning shaft 560, a clutch type main shaft transmission system 500 is arranged on the clutch self-aligning shaft 560, a first self-aligning bearing 220 is arranged on a transmission shaft 260, the upper part of the transmission shaft 260 is connected with a clutch fixing flange 530, the main shaft 100 is required to be driven to rotate through the transmission shaft 260 in the working process, but transmission of parts such as the clutch type main shaft transmission system 500 is required in the middle, concentricity between the transmission shaft 260 and the main shaft 100 is difficult to achieve under the influence of manufacturing and installation precision, if the concentricity is not consistent, the risk of friction or blocking exists in the rotating process, the concentricity of the main shaft 100 and the adapter shaft 700 can be automatically adjusted by the second self-aligning bearing, the vertical contact between the adapter shaft 700 and the second thrust bearing 250 is ensured, the concentricity between the transmission shaft 260 and the clutch center shaft 560, the clutch type main shaft transmission system 500 and the clutch fixing flange 530 can be automatically adjusted by the first center bearing 220, the vertical contact between the transmission shaft 260 and the first thrust bearing 240 is ensured, so that the concentricity between the main shaft 100 and the transmission shaft 260 is ensured, and the assembly consisting of the clutch center shaft 560, the clutch type main shaft transmission system 500 and the clutch fixing flange 530 can freely move in a certain range in the rotation direction, has certain adaptivity, can automatically adjust the circle center position in the movement process, and keeps the concentricity between the adapter shaft 700 and the transmission shaft 260.

In the description herein, it is to be understood that the terms "upper", "lower", "left", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings, and are used for convenience of description and simplicity of operation only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides a flap door, includes flap door subassembly (200) and is used for the drive flap door subassembly (200) door plant actuating system (300), its characterized in that still includes selective drive flap door subassembly (200) rotatory resetting means (400) that resets, resetting means (400) set up to be able to drive flap door subassembly (200) rotate and can't drive simultaneously flap door subassembly (200) and door plant actuating system (300) rotate.

2. The clapping door of claim 1 wherein the door panel drive system (300) comprises a clutch-type spindle drive system (500) connecting the clapping door assembly (200) to a power plant; the clutch type main shaft transmission system (500) comprises a first clutch component and a second clutch component which can be selectively connected in a transmission manner; the first clutch assembly is in transmission connection with the power device, and the second clutch assembly is in transmission connection with the flapping door assembly (200); the resetting device (400) is connected with the second clutch assembly and drives the flapping door assembly (200) to rotate by driving the second clutch assembly to rotate.

3. The clapping door as recited in claim 2 wherein the power device of the reset device (400) is a tension spring (410), and the initial pre-tightening force of the tension spring (410) is set to rotate the second clutch assembly and the clapping door assembly (200) but not to rotate the first clutch assembly, the power device, the second clutch assembly and the clapping door assembly (200) simultaneously.

4. The flap door as recited in claim 2, wherein the first clutch assembly comprises a lower wheel disc (510), the second clutch assembly comprises an upper disc (550) opposite to the lower wheel disc (510), the lower wheel disc (510) and the upper disc (550) are in an electromagnetic engagement structure, and the upper disc (550) and the lower wheel disc (510) are in an engagement state.

5. Patting door according to claim 4, characterized in that the lower wheel disc (510) is provided with an elastic limiting device (520), the elastic limiting device (520) is arranged such that its force always pushes the upper disc (550) away from the lower wheel disc (510), and in the power-off state the elastic limiting device (520) pushes the lower wheel disc (510) away from the upper disc (550).

6. Patting door according to claim 5, characterized in that between the opposite surfaces of the lower disc (510) and the upper disc (550) there is provided a rotation limiting device for limiting the relative rotation between the two.

7. The clapping door as recited in claim 6 wherein the rotation limiting means comprises first serrations provided on a surface of the lower disc (510) facing the upper disc (550) and second serrations provided on a surface of the upper disc (550) facing the lower disc (510), the first serrations and the second serrations being selectively engageable to limit relative rotation between the lower disc (510) and the upper disc (550).

8. The clapping door according to claim 2, further comprising a rotation limiting mechanism (600) for limiting the angle of rotation of the clapping door assembly (200), the rotation limiting mechanism (600) being arranged between the clutch spindle drive system (500) and the clapping door assembly (200).

9. The flap door according to claim 8, characterized in that the rotation limiting mechanism (600) comprises a fixedly arranged limiting mounting plate (610) and a limiting flange (620) rotatably arranged relative to the limiting mounting plate (610), the rotation angle of the limiting flange (620) relative to the limiting mounting plate (610) is adjustable, and the clutch type spindle transmission system (500) penetrates through the limiting mounting plate (610) and is in transmission connection with the limiting flange (620).

10. The clapping door of claim 9 wherein the position limiting mounting plate (610) is provided with a position limiting groove (612), the position limiting flange (620) is provided with a position limiting protrusion (621) corresponding to the position limiting groove (612), and the position limiting flange (620) can rotate relative to the position limiting mounting plate (610) within a range defined by the position limiting groove (612) and the position limiting protrusion (621).

11. The clapping door of claim 10 wherein the retention slot (612) is an arcuate slot having a center coinciding with an axis of rotation of the retention flange (620) relative to the retention mounting plate (610), the central angle of the arcuate slot determining the angle at which the retention flange (620) is rotatable relative to the retention mounting plate (610).

12. The clapping door of claim 11 wherein the retainer mounting plate (610) is provided with a mounting projection (614) projecting in a direction toward the retainer flange (620), the arcuate slot being provided in the mounting projection (614).

13. The clapping door of claim 12 wherein the limit mounting plate (610) is provided with a limit adjusting screw (613) for adjusting the length of the arc-shaped slot; the mounting protrusion (614) is provided with a threaded hole communicated with the arc-shaped groove, and the limiting adjusting screw (613) can be selectively inserted into the threaded hole to adjust the length of the arc-shaped groove.

14. The clapping door of claim 2 wherein the door panel drive system comprises a first drive system and a second drive system connected by a clutch-type spindle drive system (500); the clutch type spindle transmission system (500) is freely arranged, a first self-aligning bearing (220) is arranged on the first transmission system, and a second self-aligning bearing (230) is arranged at the end part, far away from the first transmission system, of the second transmission system.

15. Patting door according to claim 14, characterized in that the first transmission system comprises a transmission shaft (260), the end of the transmission shaft (260) remote from the clutch spindle transmission system (500) being provided with a first thrust bearing (240), the first self-aligning bearing (220) being provided on the transmission shaft (260) between the first thrust bearing (240) and the clutch spindle transmission system (500).

16. The clapping door of claim 15 further comprising a clutch mounting flange (530) for mounting the clutch-type spindle drive system (500), wherein the drive shaft (260) is fixedly connected to the clutch mounting flange (530).

17. Flap door according to claim 14, characterized in that the second transmission system comprises a main shaft (100) for mounting the flap door and an adapter shaft (700) for connecting the main shaft (100) and the clutch type main shaft transmission system (500), and the second self-aligning bearing (230) is arranged at the end of the main shaft (100) far away from the adapter shaft (700).

18. The clapping door of claim 17, wherein the end of the connecting shaft (700) facing the clutch-type spindle drive system (500) is fixedly connected to the clutch-type spindle drive system (500), and the connecting shaft (700) is provided with a second thrust bearing (250).

19. The clapping door of claim 18 wherein the clutch-type spindle transmission system (500) comprises a clutch adjusting shaft (560), and both ends of the clutch adjusting shaft (560) are respectively connected to the clutch fixing flange (530) and the transfer shaft (700).