CN112065193A

CN112065193A - Arc belt type transmission mechanism of arc automatic door

Info

Publication number: CN112065193A
Application number: CN201910500633.1A
Authority: CN
Inventors: 王仰民; 王梦诃; 王浩骏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-12-11

Abstract

The invention discloses an arc belt type transmission mechanism of an arc automatic door, belonging to the technical field of arc door opening and closing transmission devices. The transmission mechanism comprises an arc-shaped transmission belt, an end transmission assembly, an inner side belt connecting assembly, an outer side belt connecting assembly and an arc-shaped supporting piece. The cross section of the arc-shaped supporting piece is E-shaped. The arc-shaped transmission belt is sleeved in the two grooves, and the transmission of the arc-shaped transmission belt is supported and stabilized by respectively and uniformly fixing a plurality of supporting wheel assemblies along the inner side and the outer side of the arc-shaped transmission belt in the radian direction. Meanwhile, the adjusting block capable of adjusting the tension degree of the end part is arranged in the transmission assembly at the end part, so that the problem that the transmission belt is loosened in the using process can be effectively solved, and the service life of the arc-shaped automatic door is prolonged.

Description

Arc belt type transmission mechanism of arc automatic door

Technical Field

The invention relates to an arc belt type transmission mechanism of an arc automatic door, belonging to the technical field of arc door opening and closing transmission devices.

Background

With the continuous development of building technology, buildings with various shapes are continuously developed. The door is the most common building element for entering buildings, and is an indispensable component of building elements such as elevators and stairs for realizing vertical transfer of people or goods. Most common doors of existing buildings or structures are linear vertical hinged doors, and people can enter and exit through modes of transversely pulling or pushing and pulling. However, doors of various shapes are increasing to meet specific shapes of buildings or other specific requirements. Of these, curved doors, where the door leaf exhibits a certain uniform arc, are most common. In the entrance and exit of buildings, elevators, etc., the doors often need to be opened and closed automatically. Compared with a linear door, the opening and closing difficulty of the arc door is relatively large due to the particularity of the shape of the arc door.

In order to realize the automatic opening and closing of the arc door, the existing opening and closing or transmission mechanism mainly adopts two modes of a supporting rod type opening and closing and an arc transmission belt type opening and closing. The strut type opening and closing mode is an opening and closing mode of an arc door which is widely applied at present, and the mode has the advantages of convenience and accuracy in control, stability in operation and the like. For example, prior art CN 109132812A, CN 106494978B, etc. However, such opening and closing modes often require a connecting rod or a supporting rod structure, more parts need to be matched and linked in the movement process, power is directly transmitted through the supporting rod and other parts, and once a fault occurs, the damage to the power mechanism or the elevator door running track is large. The arc-shaped transmission belt type opening and closing mode is a more traditional transmission mode. The transmission mode has a relatively simple structure, the components mainly rotate or roll, the occupied space of the equipment is small, and the components are concentrated and are more convenient to maintain. However, because the arc-shaped transmission belt type opening and closing is adopted, the elevator door opened by the two leaves is respectively arranged on the inner side and the outer side of the transmission belt, and because of the difference of the inner distance and the outer distance in the movement process and the lack of stable support and guidance, radial or circumferential displacement is easy to occur, thereby causing the closing extrusion or the slit to occur in the opening and closing process of the elevator door. At the same time, limited to the unique shape characteristics of the arc-shaped transmission belt, the guide and support in the movement process of the arc-shaped transmission belt have relatively great difficulty. In view of the above problems, CN 2363013Y in the prior art discloses an automatic circular arc door leaf transmission device, which realizes the curve and straight movement of a transmission belt by the linkage of the transmission belt composed of a chain and a belt with two rails and a guiding structure, so that the movement of the belt is smoother and suitable support and guide are provided. Although this technique is connected the combination of having carried out certain degree with the strut-type and being connected with arc conduction band-type, makes the arc door more smooth and easy opening and close the in-process, it still has the required strut-type structure more in the motion process, and the part cooperation process is comparatively complicated, and the latent fault point is more scheduling problem.

Simultaneously, because the transmission in-process in arc area, the motion of arc drive belt can receive tensile and extrusion always, and the problem that the deformation is lax can appear in the drive belt after long-time the use. To avoid frequent maintenance and repair, it is particularly important to be able to automatically adjust the tightness of the belt to extend the life cycle of the elevator. Although there are many prior art belt or belt tightness adjusting devices, they are often less suitable for use in the particular case of arcuate belts.

Disclosure of Invention

In order to solve the technical problems of complex structure, potential fault point deflection, lack of stable support and guide for the operation of an arc-shaped transmission belt, easy deformation and looseness of the transmission belt in the use process and incapability of automatically adjusting the tension degree of the transmission belt in the belt transmission process of the conventional arc-shaped automatic door, the invention provides an arc-shaped belt transmission mechanism of the arc-shaped automatic door, and the adopted technical scheme is as follows:

an arc belt type transmission mechanism of an arc automatic door comprises an arc transmission belt 1, an end transmission assembly 3 positioned at two ends of the arc transmission belt 1 and connected through a belt tooth, an inner side belt connecting assembly 5 and an outer side belt connecting assembly 6 which are respectively connected to the inner side and the outer side of the arc transmission belt 1; the inner side belt connecting assembly 5 and the outer side belt connecting assembly 6 are respectively connected with an arc door, and after the end part transmission assembly 3 is driven by power to rotate, the inner side belt connecting assembly and the outer side belt connecting assembly move in opposite directions under the driving of the transmission belt to open the arc door, and after the power rotates in opposite directions, the arc door is closed. Meanwhile, the device also comprises an arc-shaped support 2 and a plurality of support wheel assemblies 4; the arc-shaped support 2 at least comprises a guide rail 21 positioned at the outermost side and an inner support plate 22 positioned at the innermost side; the upper surface of the guide rail 21 is of a groove structure; the groove structure is connected with a plurality of guide wheels 53 of the inner side belt connecting assembly 5 and the outer side belt connecting assembly 6 in a rolling fit mode; the guide wheels 53 are connected with the arc door to guide the arc door to move along the guide rail 21 concentric with the section of the arc door; the inner supporting plate 22 is fixedly connected with a plurality of supporting wheel assemblies 4 which are uniformly distributed along the radian of the arc-shaped transmission belt 1; the supporting wheel assembly 4 comprises a rotating shaft 41 which is in rolling contact with the inner side surface or the outer side surface of the arc-shaped transmission belt 1; two end faces of the rotating shaft 41 extend out of a mandrel connected with the radial telescopic adjusting assembly, and the rotating shaft 41 changes the radial position in the arc-shaped supporting piece 2 under the action of the radial telescopic adjusting assembly.

Preferably, the radial expansion and contraction adjusting assembly comprises an adjusting frame 43, a spring II 44 and a reed 46; the spring II 44 and the reed 46 are arranged in the cavity of the adjusting frame 43; the spindle 45 of the rotating shaft 41 extends and is inserted between the spring II 44 and the spring leaf 46; the spring II 44 is in a compressed state; the direction of the force of the spring II 44 is the radial direction of the arc-shaped support part 2.

More preferably, the spindle 45 is connected to the rotating shaft 41 through a bearing.

Preferably, the arc-shaped support 2 further comprises a middle support plate 23; the middle support plate 23 is positioned at the inner side of the guide rail 21 and the outer side of the inner support plate 22; the arc-shaped transmission belt 1 is sleeved on the outer side of the middle supporting plate 23.

More preferably, the middle support plate 23, the inner support plate 22, the guide rail 21 of the arc supporter 2 are coaxial with the arc door.

More preferably, the middle support plate 23, the inner support plate 22 and the guide rail 21 are integrally formed or fixedly connected together by an arc-shaped connecting plate 9.

Preferably, the medial strap connection assembly 5 comprises an inner fixing plate 51, an inner connecting member 52 and a guide wheel 53; the inner fixing plate 51 is fixedly connected to the outer side surface of the inner side belt of the arc-shaped transmission belt 1, the top of the inner fixing plate is higher than the upper surface of the arc-shaped transmission belt 1, a through strip-shaped groove 511 is formed in the part, higher than the upper surface of the arc-shaped transmission belt 1, the inner connecting plate 52 is an L-shaped plate, the horizontal section of the inner fixing plate is inserted into the groove 511, and the outer side surface; the inner shaft 531 of the guide wheel 53 is connected to the bearing hole.

Preferably, the outer belt connecting assembly 6 comprises an outer fixing plate 61 and a guide wheel 53; the inner side surface of the outer fixing plate 61 is fixedly connected with the arc-shaped transmission belt 1, and the middle part of the outer side surface is provided with a protruding bearing 62; the inner shaft of the guide wheel 53 is connected to the protruding bearing 62.

Preferably, the transmission mechanism further comprises a guide rail 7 which is arranged corresponding to the guide rail 21 and is connected with the other end of the arc door through a guide wheel; the guide channel of the guide rail 7 for cooperation with the guide wheel is located on the upper or lower surface thereof.

Preferably, the end transmission assembly 3 comprises a toothed wheel 31 in rolling fit connection with the arc-shaped transmission belt 1 through a toothed belt, an adjusting block 32 provided with an adjusting cavity 321 and positioned at the lower part of the toothed wheel 31, a bearing 35 provided with the adjusting cavity 321 of the adjusting block 32, a power shaft connecting tooth 33 positioned at the lower part of the adjusting block 32 and a telescopic adjusting component; the adjusting block 32 is provided with two connecting holes 322; the telescopic adjusting part passes through the connecting hole 322 to prop against the bearing 35 and can enable the bearing 35 to slide along the adjusting cavity 321; the lower surface of the belt gear 31 is provided with a jaw I312, and the upper surface of the power shaft connecting tooth 33 is provided with a jaw II 332; the jaw flap I312 and the jaw flap II332 are matched, inserted and installed in the bearing 35; the power shaft connecting teeth 33 are meshed with a gear on an output shaft of the power device; the adjusting length of the adjusting cavity 321 is smaller than the working tooth depth of the power shaft connecting tooth 33.

More preferably, the telescopic adjustment member is a spring or other existing member that enables telescopic adjustment in the axial direction.

Preferably, the end transmission assembly 3 comprises: the belt gear 31 and the adjusting block 32, wherein a through adjusting cavity 321 is arranged in the adjusting block 32; a bearing 35 disposed in the adjustment cavity 321; a shaft located within the bearing 35; and a telescopic adjusting component for realizing axial telescopic adjustment through the connecting hole. The end face of the bearing 35 extends out of the two ends of the shaft, the end face of the shaft is provided with a threaded hole, and the side face of the shaft is provided with a gear, a spline or a convex edge groove and other structures connected with the power shaft. The arrangement of the toothed wheel 31 is the same as above.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the tension degree adjusting blocks are arranged at the end parts of the two sides of the arc-shaped conveying belt, when the conveying belt is loosened, the spring in a compressed state in the adjusting blocks can further push the conveying belt tightly, so that the tension degree of the circumferential end part of the conveying belt is ensured in real time. Meanwhile, two layers of supporting wheel assemblies are uniformly arranged along the arc circumference of the transmission belt. The spring that can push away the back shaft subassembly dabber in every back shaft subassembly, it can jack-up the drive belt by a small margin when drive belt circumference is lax to play the effect of recovering the drive belt rate of tension. At the same time, a spring plate is arranged at the other time of the mandrel so as to carry out necessary limitation on the elastic force of the spring and prevent the spring from pushing the mandrel to the limit position in one step.

The arc-shaped supporting piece adopts an E-shaped structure with a cross section and is provided with two arc-shaped groove structures. The arc-shaped groove structure can be fixedly connected and matched with the supporting wheel assembly, so that the arc-shaped driving belt is perfectly supported. Meanwhile, an inwards concave channel structure is arranged on the upper surface of the protruding part at the outermost side. The channel structure is used as a motion track limiting mechanism of a guide wheel for guiding the elevator surface to perform circular motion, so that the elevator door can perform circular motion strictly and accurately.

Drawings

FIG. 1 is a perspective view of an arcuate power transmission belt according to a preferred embodiment of the present invention.

Fig. 2 is a schematic perspective view of an arc-shaped supporting member according to a preferred embodiment of the present invention.

Fig. 3 is a schematic perspective view of an end drive assembly according to a preferred embodiment of the present invention.

Fig. 4 is an exploded view of fig. 3.

Fig. 5 is a perspective view illustrating a supporting wheel assembly according to a preferred embodiment of the present invention.

FIG. 6 is a perspective view of a medial strap attachment assembly in accordance with a preferred embodiment of the present invention.

Fig. 7 is a perspective view illustrating an outer tape connecting unit according to a preferred embodiment of the present invention.

Fig. 8 is a perspective view illustrating a guide rail according to a preferred embodiment of the present invention.

Fig. 9 shows an elevator automatic door machine including an arc-shaped belt drive mechanism according to a preferred embodiment of the present invention.

Fig. 10 is a schematic perspective view of fig. 9.

Fig. 11 shows an elevator automatic door machine including an arc-shaped belt drive mechanism according to another preferred embodiment of the present invention.

Wherein, 1, an arc-shaped transmission belt; 2, arc-shaped supporting pieces; 3, an end transmission assembly; 4, supporting the wheel assembly; 5, connecting the inner side belt; 6, connecting the outer side belt; 7, a guide rail; 8, an elevator door; 9, an arc-shaped connecting plate; 11, toothed; 12, a drive end; 21, guiding a rail; 22, an inner support plate; 23, a middle support plate; 24, an outer groove; 25, inner grooves; 31, a toothed wheel; 32, a regulating block; 33, power shaft connecting teeth; 34, a spring I; 35, a bearing; 41, a rotating shaft; 42, preventing the falling edge; 43, an adjustment frame; 44, spring II; 45, a mandrel; 46, a reed; 51, an inner fixing plate; 52, an inner connecting member; 53, guide wheels; 61, an outer fixing plate; 62, a protruding bearing; 71, a groove; 81, a ladder door fixing hole; 231, end adjustment fixing holes; 311, the shaft is toothed; 312, jaw flap I; 321, adjusting the cavity; 322, a connecting hole; 331, a gear; 332, the jaw flap II; 511, a groove; 531, medial axis; 532, outboard shaft.

Detailed Description

In the following description of the present invention, it is to be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and "upright", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the following description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be direct or indirect via an intermediate medium, or the connection may be internal to both components. To those of ordinary skill in the art, the specific meaning of the above-described terms in the present invention can be understood as a specific case.

In addition, in the following description of the present invention, the meaning of "plurality", and "plural" is two or more unless otherwise specified.

The materials, reagents, devices, apparatuses, methods and processes used in the following examples are not specifically described, and are all materials, reagents, devices, apparatuses, methods and processes which are common in the art, and are commercially available to those skilled in the art or can be routinely set up according to specific needs without any creative effort.

The present invention will be described in further detail with reference to the drawings and the detailed description, but the present invention is not limited to the following detailed description.

FIG. 1 is a perspective view of an arcuate power transmission belt according to a preferred embodiment of the present invention. As shown in fig. 1, the arc-shaped transmission belt 1 is semicircular, and the two ends of the arc-shaped transmission belt are provided with teeth 11 with corresponding lengths according to the angle for driving the arc-shaped door to rotate (a circle of teeth can also be arranged in the inner ring of the transmission belt). The two ends of the transmission belt are transmission end parts used for being connected with the driving wheel set.

Fig. 2 is a schematic perspective view of an arc-shaped supporting member according to a preferred embodiment of the present invention. As can be seen from fig. 2, the arc-shaped supporting member 2 has a semi-ring structure with a semi-circle arc. The bottom surface of one side is a plane, and three concentric bulges are arranged at intervals on the other side. The inner supporting plate 22, the middle supporting plate 23 and the guide rail 21 are arranged from inside to outside in sequence. Wherein, the upper surface of the guide rail 21 is provided with an inward-concave guide groove. Meanwhile, two end adjusting fixing holes 231 are correspondingly formed on the end surface of the middle supporting plate 23 for being connected with the adjusting blocks of the end transmission assembly in a matching manner.

Fig. 3 is a schematic perspective view of an end drive assembly according to a preferred embodiment of the present invention. Fig. 4 is an exploded view of fig. 3. As can be seen from fig. 3 and 4, the end drive consists of 6 parts, namely 1 toothed wheel 31, 1 adjusting block 32, 1 power

shaft connecting tooth

33, 2 springs I34 and 1 bearing 35. The upper part of the toothed wheel 31 is provided with shaft toothed teeth 311 for rotationally meshing with the toothed teeth, and the bottom part is provided with jaw pieces I312 for jaw connection with the power shaft connecting teeth 33. The lower part of the belt gear 31 is provided with an adjusting block 32 penetrating through an adjusting cavity 321. The side of the adjusting block 32 is provided with two connecting holes 322 for assembling the spring I34. The connecting hole 322 may be engaged with the end adjustment fixing hole 231 on the end surface of the arc supporter 2 to form a cavity for accommodating the spring. The spring I34 is compressed in the cavity, so as to realize the pushing action on the bearing 35 arranged in the adjusting cavity 321. The bearing 35 is a shaft-shaped structure formed by inserting, combining and connecting the jaw pieces I312 and II 332. The bottom of the adjusting block is provided with a power shaft connecting tooth 33, the upper part of the adjusting block is provided with a jaw II332, and the lower part of the adjusting block is provided with a transmission tooth 331 matched with an output shaft gear of a power device (such as a motor). The working tooth depth of the transmission tooth 331 and the power shaft matching gear is larger than the distance which can be adjusted by the adjusting block through pushing the bearing 35, so that the bottom meshing gear is prevented from being separated when the distance is adjusted.

Fig. 5 is a perspective view illustrating a supporting wheel assembly according to a preferred embodiment of the present invention. As can be seen from fig. 5, the supporting wheel assembly is composed of a rotating shaft 41 and two radial telescopic adjusting assemblies. The two ends of the rotating shaft 41 are respectively provided with a retaining edge 42 protruding in the radial direction, so that the transmission belt rolls on the circumferential surface of the rotating shaft 41 between the retaining edges 42 to prevent the transmission belt from being separated. Meanwhile, the inside of the rotating shaft 41 is connected with a mandrel 45 with the length larger than that of the rotating shaft 41 through a bearing, and two ends of the mandrel 45 are inserted into the radial telescopic adjusting assembly to realize adjustment. The radial telescopic adjusting assembly comprises an adjusting frame 43 with a through rectangular through hole, a spring II 44 and a spring leaf 46 which are arranged in the adjusting frame 43. Between the spring II 44 and the spring 46 is a spindle 45, and the spring II 44 is in a compressed state, thereby pushing the spindle 45 to move in the direction of the spring.

FIG. 6 is a perspective view of a medial strap attachment assembly in accordance with a preferred embodiment of the present invention. As shown in fig. 6, the inner fixing band 5 is mainly composed of three components, i.e., an arc-shaped inner fixing plate 51, an inner connecting member 52 having an L-shaped cross section, and a guide roller 53. The inner side surface of the inner fixing plate 51 is fixed with the outer side surface (i.e. the surface with teeth) of the inner ring of the arc-shaped transmission belt 1, a groove 511 is arranged at the part of the top part higher than the arc-shaped transmission belt 1, the tail end of the horizontal section of the inner connecting piece 52 is inserted into the groove 511, and the connection of the inner fixing plate and the groove can adopt an inserted movable connection, so as to offset the deviation caused by the arc-shaped door due to the radial movement generated in the transmission process of the transmission belt. A bearing is provided on the outer side of the vertical end of the inner link 52, to which the inner shaft 531 of the guide wheel 53 is connected. The guide wheel is also provided with an outer periphery 532 for attachment to the curved door.

Fig. 7 is a perspective view illustrating an outer tape connecting unit according to a preferred embodiment of the present invention. As can be seen from fig. 7, the outer connecting element consists of two parts, namely a guide wheel 53 and an outer fixing plate 61. The outer fixing plate 61 is of an arc structure, the inner side surface of the outer fixing plate is fixed with the outer side surface of the arc-shaped transmission belt 1, the middle part of the outer side surface is provided with a protruding bearing 62, and the inner shaft 531 of the guide wheel 53 is connected with the protruding bearing 62.

Fig. 8 is a perspective view illustrating a guide rail according to a preferred embodiment of the present invention. As can be seen from fig. 8, the guide rail 7 is configured to conform to the shape and specification of the guide rail 21, and is used to fix the other end of the curved door.

Detailed description of the invention

Fig. 9 shows an elevator automatic door machine including an arc-shaped belt drive mechanism according to a preferred embodiment of the present invention. Fig. 10 is a schematic perspective view of fig. 9. As can be seen from fig. 9 and 10, the elevator automatic door machine comprises two arc-shaped elevator doors 8, a guide rail 7 at the top and four guide wheels, wherein each two guide wheels are connected with the same elevator door 8. An arc belt type transmission mechanism is arranged at the bottom of the elevator. The arc belt type transmission mechanism consists of two outer side fixed connecting components 6, two inner side connecting components 5, an arc transmission belt 1, an arc supporting piece 2, a plurality of supporting wheel components 4 which are divided into two arc belt-shaped distributions, and two end transmission components 3 which are positioned at two ends of the arc transmission belt 1. Wherein, arc drive belt 1 cup joints in the both sides of the middle part backup pad 23 of arc support area 2, and a set of backup pad subassembly 4 that is the arc and arranges is connected in backup pad 22 for support arc drive belt 1's inboard drive belt. And another set of support wheel assemblies 4 are attached to the top surface of the middle support plate 23 to support the outer side of the arcuate belt. The two sets of support wheel assemblies 4, which are uniformly distributed, can well maintain the shape of the arc-shaped transmission belt 1. In order to avoid the friction between the belt teeth and the roller, a tooth-shaped structure matched with the belt teeth can be arranged on the rotating shaft through which the belt teeth pass so as to reduce the abrasion.

When the elevator door is opened, the power mechanism is meshed with the transmission gear 331 through a gear of an output shaft (not shown), so that the gear 31 is driven to rotate, and the whole arc-shaped transmission belt 1 is driven to rotate. The elevator door respectively connected with the inner side belt connecting component 5 and the outer side belt connecting component 6 moves in opposite directions under the drive of the two groups of components, so that the opening of the elevator door is realized. When the power shaft is started to a certain degree, the power shaft stops rotating. When the elevator door needs to be closed, the power mechanism rotates reversely, and the two elevator doors move along the circular arcs in opposite directions under the driving of the inner side belt connecting assembly 5 and the outer side belt connecting assembly 6, so that the elevator doors are closed. In order to realize the closing precision, a travel switch, various sensors and the like can be arranged at the opposite end of the elevator door so as to further realize the accurate opening and closing of the elevator door. In use, the force of the contraction of the belt along the arc and the elastic force of the spring I34 in the compressed state are a pair of forces in balance with each other. When the belt slack contraction force decreases, spring I34 will expand and contract further to keep the belt balanced and also keep the belt running stable. The supporting wheel assemblies 4 uniformly distributed along the arc direction of the arc-shaped supporting piece 2 also adopt the same principle to maintain and adjust the tension and the running stability of the transmission belt.

Furthermore, if controlled autonomous adjustment is required, this allows to replace the springs used with previously known components capable of achieving a controlled telescopic action. Such as hydraulic or pneumatic devices, lead screws, threaded rods, etc.

Detailed description of the invention

Fig. 11 shows an elevator automatic door machine including an arc-shaped belt drive mechanism according to another preferred embodiment of the present invention. As can be seen from fig. 11, the difference between this embodiment and the first embodiment is that: the arc-shaped support member 2 is a non-integral structure, but is composed of a guide rail 21, an inner support plate 22 and a middle support plate 23 which are independently separated. The three parts are connected into a whole through an arc-shaped connecting plate 9 when being installed or after being installed. Although the installation steps are increased in the arrangement mode, the parts are simplified, and the parts are more convenient to process.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An arc belt type transmission mechanism of an arc automatic door comprises an arc transmission belt (1), an end transmission assembly (3) which is positioned at two ends of the arc transmission belt (1) and is connected through a belt tooth, an inner side belt connecting assembly (5) and an outer side belt connecting assembly (6) which are respectively connected to the inner side and the outer side of the arc transmission belt (1); the inner side belt connecting assembly (5) and the outer side belt connecting assembly (6) are respectively connected with one arc-shaped door, and after the power device drives the end part transmission assembly (3) to rotate, the two arc-shaped doors move in reverse directions under the driving of the transmission belt to open, and after the power device rotates reversely, the arc-shaped doors are closed; the device is characterized by also comprising an arc-shaped support part (2) and a plurality of support wheel assemblies (4); the arc-shaped support (2) at least comprises a guide rail (21) positioned at the outermost side and an inner support plate (22) positioned at the innermost side; the upper surface of the guide rail (21) is of a groove structure; the groove structures are in rolling fit connection with a plurality of guide wheels (53) of the inner side belt connecting assembly (5) and the outer side belt connecting assembly (6); the guide wheels (53) are connected with the arc door and guide the arc door to move along a guide rail (21) concentric with the section of the arc door; the inner supporting plate (22) is fixedly connected with a plurality of supporting wheel assemblies (4) which are uniformly distributed along the radian of the arc-shaped transmission belt (1); the supporting wheel assembly (4) comprises a rotating shaft (41) which is in rolling contact with the inner side surface or the outer side surface of the arc-shaped transmission belt (1); two end faces of the rotating shaft (41) extend out of a mandrel (45) connected with the radial telescopic adjusting assembly, and the rotating shaft (41) changes the radial position in the arc-shaped supporting piece (2) under the action of the radial telescopic adjusting assembly.

2. The arcuate belt drive of an arcuate automatic door as claimed in claim 1, wherein said radial expansion adjustment assembly comprises an adjustment frame (43), a spring II (44) and a spring plate (46); the spring II (44) and the reed (46) are arranged in a cavity of the adjusting frame (43); a mandrel (45) of the rotating shaft (41) extends and is inserted between the spring II (44) and the reed (46); the spring II (44) is in a compressed state; the direction of the acting force of the spring II (44) is the radial direction of the arc-shaped support piece (2).

3. The curved belt drive of a curved automatic door according to claim 2, characterized in that the spindle (45) is connected with the rotating shaft (41) through a bearing.

4. The curved belt drive of a curved automatic door according to claim 1, characterized in that the curved support (2) further comprises a middle support plate (23); the middle support plate (23) is positioned at the inner side of the guide rail (21) and the outer side of the inner support plate (22); the arc-shaped transmission belt (1) is sleeved on the outer side of the middle supporting plate (23).

5. The curved belt drive of a curved automatic door according to claim 4, characterized in that the middle support plate (23), the inner support plate (22), the guide rail (21) of the curved support (2) are coaxial with the curved door.

6. The curved belt drive of a curved automatic door according to claim 4, characterized in that the middle support plate (23), the inner support plate (22) and the guide rail (21) are integrally formed or fixedly connected by the curved connecting plate (9).

7. The curved belt drive of a curved automatic door according to claim 1, characterized in that the inner belt connecting assembly (5) comprises an inner fixing plate (51), an inner connecting member (52) and a guide wheel (53); the inner fixing plate (51) is fixedly connected to the outer side surface of the inner side belt of the arc-shaped transmission belt (1), the top of the inner fixing plate is higher than the upper surface of the arc-shaped transmission belt (1), a through strip-shaped groove (511) is formed in the part, which is higher than the upper surface of the arc-shaped transmission belt (1), the inner connecting plate (52) is an L-shaped plate, the horizontal section is spliced with the groove (511), and the outer side surface of the vertical section; an inner shaft (531) of the guide wheel (53) is connected with the bearing hole.

8. The curved belt drive of a curved automatic door according to claim 1, characterized in that the outer belt connecting assembly (6) comprises an outer fixing plate (61) and a guide wheel (53); the inner side surface of the outer fixing plate (61) is fixedly connected with the arc-shaped transmission belt (1), and the middle part of the outer side surface is provided with a protruding bearing (62); the inner shaft of the guide wheel (53) is connected with the protruding bearing (62).

9. The curved belt type transmission mechanism of a curved automatic door according to claim 1, further comprising a guide rail (7) provided corresponding to the guide rail (21) and connected to the other end of the curved door through a guide wheel; the guide channel of the guide rail (7) for cooperating with the guide wheel is located on the upper surface or the lower surface thereof.

10. The arc-shaped belt type transmission mechanism of the arc-shaped automatic door as claimed in claim 1, wherein the end transmission assembly (3) comprises a toothed wheel (31) which is connected with the arc-shaped transmission belt (1) in a rolling fit manner through a toothed belt, an adjusting block (32) which is arranged at the lower part of the toothed wheel (31) and is provided with an adjusting cavity (321), a bearing (35) which is arranged at the adjusting cavity (321) of the adjusting block (32), a power shaft connecting tooth (33) which is arranged at the lower part of the adjusting block (32) and a telescopic adjusting component; the adjusting block (32) is provided with two connecting holes (322); the telescopic adjusting part penetrates through the connecting hole (322) to prop against the bearing (35) and can enable the bearing (35) to slide along the adjusting cavity (321); the lower surface of the belt gear (31) is provided with a jaw I (312), and the upper surface of the power shaft connecting tooth (33) is provided with a jaw II (332); the jaw valve I (312) and the jaw valve II (332) are matched, inserted and installed in the bearing (35); the power shaft connecting teeth (33) are meshed with a gear on an output shaft of the power device; the adjusting length of the adjusting cavity (321) is smaller than the working tooth depth of the power shaft connecting tooth (33).