CN116715124A

CN116715124A - Elevator door machine

Info

Publication number: CN116715124A
Application number: CN202310511806.6A
Authority: CN
Inventors: 章文斌; 王支强
Original assignee: Hangzhou Youmai Electromechanical Technology Co ltd
Current assignee: Hangzhou Youmai Electromechanical Technology Co ltd
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-09-08

Abstract

The elevator door machine comprises a door machine base, a transmission mechanism and two hanging plates, wherein the two hanging plates are arranged on the door machine base in a rolling way and are in transmission connection with the transmission mechanism, and the two hanging plates can move oppositely or move back to back under the drive of the transmission mechanism; the transmission mechanism comprises a toothed belt, a rope, two connecting frames and two transmission arms, wherein the toothed belt is connected with the rope through the two connecting frames, the two transmission arms and the two hanging plates are arranged in one-to-one correspondence, and the hanging plates can be connected with the corresponding connecting frames through the corresponding transmission arms; the connecting frame comprises a metal connecting plate and a toothed belt pressing plate, the metal connecting plate and the toothed belt pressing plate can be matched with each other and are jointly used for clamping the toothed belt, the rope is connected to one end, extending out of the toothed belt pressing plate, of the metal connecting plate, and the transmission arm is connected to the toothed belt pressing plate. The application not only reduces the noise generated when the transmission mechanism drives the hanging plate to move, but also can prevent the toothed belt from breaking.

Description

Elevator door machine

Technical Field

The application belongs to the technical field related to elevators, and particularly relates to an elevator door machine.

Background

The elevator door machine is a mechanism for opening and closing the elevator hall door, and the elevator hall door or the elevator car door is driven by a driving mechanism to be closed or opened.

Wherein, two link plates are arranged in the elevator door machine to be connected with two elevator hall sedan-chair doors for when the elevator door machine works, drive mechanism drives two link plates and removes in opposite directions or move in opposite directions, can realize closing or opening two elevator hall sedan-chair doors. At present, two hanging plates in the existing elevator door machine are connected with a toothed belt on a transmission mechanism by adopting a toothed pressing plate, so that the toothed belt in the transmission mechanism can drive the two hanging plates to move oppositely or move back to back while transmitting. However, because the toothed belt needs to utilize the concave-convex fit tooth structure between the toothed belt and the toothed pressing plate to realize power transmission when moving, the toothed belt drives the hanging plate to synchronously move and generates larger noise, and in the process, the toothed belt is stressed intensively, so that the toothed belt is easy to break.

Disclosure of Invention

In view of the foregoing, there is a need for an elevator door machine that solves the above-mentioned problems.

The elevator door machine comprises a door machine base, a transmission mechanism and two hanging plates, wherein the two hanging plates are arranged on the door machine base in a rolling way and are in transmission connection with the transmission mechanism, and the two hanging plates can move oppositely or move back to back under the drive of the transmission mechanism; the transmission mechanism comprises a toothed belt, a rope, two connecting frames and two transmission arms, wherein the toothed belt is connected with the rope through the two connecting frames, the two transmission arms and the two hanging plates are arranged in one-to-one correspondence, and the hanging plates can be connected with the corresponding connecting frames through the corresponding transmission arms;

the connecting frame comprises a metal connecting plate and a toothed belt pressing plate, the metal connecting plate and the toothed belt pressing plate can be matched with each other and are commonly used for clamping the toothed belt, the rope is connected to one end, extending out of the toothed belt pressing plate, of the metal connecting plate, and the transmission arm is connected to the toothed belt pressing plate.

It can be understood that the hanging plate is in transmission connection with the toothed belt pressing plate through the corresponding transmission arm, so that the transmission mechanism can drive the hanging plate to synchronously move by using the connecting frame, noise generated when the transmission mechanism drives the hanging plate to move is reduced, and in the process, the toothed belt is stressed integrally, so that the toothed belt is prevented from being broken; meanwhile, the connecting frame is connected with the rope through the metal connecting plate, so that the pulling-out force of the connecting frame when the connecting frame is connected with the rope and the toothed belt is improved, and the toothed belt is further prevented from being broken.

In one embodiment, one end of the transmission arm is connected with the corresponding hanging plate in a matched manner, and the other end of the transmission arm is connected with the corresponding toothed belt pressing plate in a plug-in manner;

the transmission arm is connected with a connecting shaft, the toothed belt pressing plate is provided with a jack, and the jack is matched with the connecting shaft; the connecting shaft is in plug-in fit with the jack, so that the transmission arm can be adjusted in position relative to the toothed belt pressing plate along the length direction of the connecting shaft.

It can be understood that the transmission connection between the transmission arm and the toothed belt pressing plate is realized by the plug-in cooperation of the transmission arm and the toothed belt pressing plate, so that once the hanging plate is inclined forwards and backwards, the transmission arm can adjust the front-back offset position relative to the toothed belt pressing plate so as to offset the influence on the toothed belt caused by the front-back inclination of the hanging plate, thus ensuring that the toothed belt in the transmission mechanism cannot offset along with the front-back inclination of the hanging plate, and further avoiding noise and abrasion caused by the offset of the toothed belt when the transmission mechanism transmits power; meanwhile, the connection shaft on the transmission arm and the jack on the toothed belt pressing plate are used for realizing the plug-in fit between the transmission arm and the toothed belt pressing plate, so that the plug-in fit between the transmission arm and the toothed belt pressing plate can be facilitated.

In one embodiment, the connection shaft is disposed through the receptacle;

and a gap is formed between the part, facing the toothed belt pressing plate, of the driving arm and the toothed belt pressing plate.

It can be understood that the connecting shaft penetrates through the jack to form a gap between the transmission arm and the toothed belt pressing plate, so that enough space can be provided for the position adjustment of the transmission arm on the toothed belt pressing plate along the length direction of the connecting shaft, and the toothed belt pressing plate has the function of further ensuring that the toothed belt cannot deviate along with the front-back inclination of the hanging plate.

In one embodiment, the transmission mechanism further comprises a driving motor, a driving wheel and a driven wheel, the driving motor and the driven wheel are both installed on the gantry crane base, the driving wheel is coaxially connected to the output end of the driving motor, the toothed belt bypasses the driving wheel, the rope bypasses the driven wheel, the connecting frame is located between the driving wheel and the driven wheel, and a gap is formed between the connecting frame and the gantry crane base.

It can be understood that the driving wheel is coaxially connected to the output end of the driving motor, so that the distance between the toothed belt and the door machine base is formed by the thickness of the driving motor, and therefore, a sufficient gap between the connecting frame and the door machine base is ensured, and the toothed belt and the door machine base cannot collide.

In one embodiment, the transmission mechanism further comprises a driven wheel bracket, and the driven wheel (27) is mounted on the door machine base through the driven wheel bracket;

the driven wheel bracket comprises a mounting surface connected with the driven wheel and a foot connected with the door machine base; the bottom feet comprise first bottom feet and second bottom feet, and the first bottom feet and the second bottom feet are sequentially arranged on two sides of the driven wheel along the stress direction of the driven wheel; the first footing is connected with the door machine base through a fastener, a limiting foot is formed on the second footing and is inserted into the door machine base, and a supporting foot is further formed on the second footing and is propped against the door machine base.

It can be understood that the driven wheel bracket is inserted into the door machine base by a limit foot and is connected to the door machine base by a fastener, so that the driven wheel bracket is convenient to assemble to the door machine base; simultaneously, support leg and first footing for the driven wheel support are supported and lean on in the door machine base, so, improve the stability of driven wheel support assembly on the door machine base.

In one embodiment, the connecting frame further comprises a first locking member, and the first locking member penetrates through the toothed belt pressing plate and the metal connecting plate to fix the toothed belt pressing plate to the metal connecting plate.

It can be appreciated that the first locking member is used to realize the mating connection between the metal connecting plate and the toothed belt pressing plate, so that the connection between the metal connecting plate and the toothed belt pressing plate is facilitated, and the toothed belt is further conveniently assembled between the metal connecting plate and the toothed belt pressing plate.

In one embodiment, the metal connecting plate comprises a side block, and the side block is arranged opposite to the toothed belt pressing plate;

wherein, the side shield is provided with a through hole for the rope to pass through.

In one embodiment, the transmission mechanism further comprises a tension adjusting assembly, and the tension adjusting assembly can act on the rope and the metal connecting plate to adjust the tension of the rope and the toothed belt.

In one embodiment, the tensioning adjustment assembly comprises an elastic member, a limiting member and a second locking member, wherein the elastic member and the limiting member are arranged at one end of the rope and are both mounted on a part of the rope penetrating through the side block so that two ends of the elastic member are abutted against the side block and the limiting member;

the second locking piece is connected to the part of the connecting rod penetrating through the side block, can displace relative to the connecting rod and lock the position, and is used for adjusting the length of the part of the connecting rod penetrating through the side block.

It can be understood that the way of compressing the elastic piece by the limiting piece is used for adjusting the part length of the connecting rod penetrating through the side block and adjusting the rope tensioning degree, so that the transmission mechanism can adjust the rope tensioning degree and the toothed belt tensioning degree on the connecting frame, the assembly and the application of the transmission mechanism in the elevator door machine are facilitated, and the rope tensioning degree and the toothed belt tensioning degree are convenient to adjust.

In one embodiment, the metal connecting plate is provided with a tensioning in-place prompt mechanism, and the tensioning in-place prompt mechanism is arranged at one end, connected with the elastic piece, of the metal connecting plate and is used for prompting in-place of the limiting piece;

the tensioning in-place prompting mechanism comprises an in-place mark, and the limiting piece can be aligned with the in-place mark; or, the tensioning in-place prompting mechanism comprises a flange arranged on the metal connecting plate, and the limiting piece can be abutted against the flange.

It can be understood that the tensioning in-place prompt mechanism is used for realizing in-place prompt of the limiting piece and achieving in-place prompt of the tensioning degree adjustment of the rope and the toothed belt, so that the tensioning degree adjustment of the rope and the toothed belt is facilitated.

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

the elevator door machine claimed by the application has the advantages that the hanging plate is in transmission connection with the toothed belt pressing plate through the corresponding transmission arm, so that the transmission mechanism can drive the hanging plate to synchronously move by the connecting frame, noise generated when the transmission mechanism drives the hanging plate to move is reduced, and in the process, the toothed belt is stressed integrally, so that the toothed belt is prevented from being broken; meanwhile, the connecting frame is connected with the rope through the metal connecting plate, so that the pulling-out force of the connecting frame when the connecting frame is connected with the rope and the toothed belt is improved, and the toothed belt is further prevented from being broken.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural view of an elevator door machine provided by the application;

fig. 2 is a schematic view of a partial structure of the elevator door machine of fig. 1;

fig. 3 is another partial structural schematic view of the elevator door machine of fig. 1;

FIG. 4 is a schematic view of a part of the transmission mechanism of the present application;

FIG. 5 is an exploded view of a connector according to an embodiment of the present application;

FIG. 6 is a schematic diagram of an assembled structure of the connecting frame, toothed belt, rope and tension adjusting assembly of FIG. 5;

FIG. 7 is a schematic diagram illustrating an assembling structure of a connecting frame according to an embodiment of the present application;

fig. 8 is a schematic diagram of an assembled structure of the connecting frame, toothed belt, rope and tension adjusting assembly of fig. 7.

Reference numerals: 100. an elevator door machine; 10. a door machine base; 20. a transmission mechanism; 21. a toothed belt; 22. a rope; 221. a blocking head; 222. a connecting rod; 23. a connecting frame; 231. a metal connecting plate; 2311. a side block; 2312. a through hole; 2313. an opening; 2314. marking; 2315. a flange; 232. a toothed belt press plate; 2321. a jack; 233. a first locking member; 24. a transmission arm; 241. a connecting shaft; 2411. a circular shaft; 242. a bolt; 25. a driving motor; 26. a driving wheel; 27. driven wheel; 271. a driven wheel bracket; 2711. a mounting surface; 2712. a first footing; 2713. a second foot; 27131. a limit foot; 2714. a fastener; 2715. supporting feet; 28. a tension adjusting assembly; 281. an elastic member; 282. a limiting piece; 283. a second locking member; 30. and (5) hanging the plate.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.

It will be understood that when an element is referred to as being "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, an elevator door machine 100 according to an embodiment of the present application includes a door machine base 10, a transmission mechanism 20, and two hanging plates 30, wherein the two hanging plates 30 are mounted on the door machine base 10 in a rolling manner and are in transmission connection with the transmission mechanism 20, and the two hanging plates 30 can move in opposite directions or in opposite directions under the drive of the transmission mechanism 20; the transmission mechanism 20 comprises a toothed belt 21, a rope 22, two connecting frames 23 and two transmission arms 24, wherein the toothed belt 21 is connected with the rope 22 through the two connecting frames 23, the two transmission arms 24 and the two hanging plates 30 are arranged in a one-to-one correspondence manner, and the hanging plates 30 can be connected with the corresponding connecting frames 23 through the corresponding transmission arms 24; the connecting frame 23 includes a metal connecting plate 231 and a toothed belt pressing plate 232, the metal connecting plate 231 and the toothed belt pressing plate 232 can be mutually matched and are commonly used for clamping the toothed belt 21, the rope 22 is connected to one end of the metal connecting plate 231, which extends out of the toothed belt pressing plate 232, and the transmission arm 24 is connected to the toothed belt pressing plate 232.

It can be understood that the hanging plate 30 is in transmission connection with the toothed belt pressing plate 232 through the corresponding transmission arm 24, so that the transmission mechanism 20 can drive the hanging plate 30 to move synchronously by using the connecting frame 23, thus compared with the situation that the toothed belt 21 directly drives the hanging plate 30 to move, the hanging plate has the effect of reducing the noise generated when the transmission mechanism 20 drives the hanging plate 30 to move, and in the process, the toothed belt 21 is stressed integrally, so that the toothed belt 21 is prevented from being broken; meanwhile, the connecting frame 23 is connected with the rope 22 by the metal connecting plate 231, so that the pulling-out force of the connecting frame 23 when connecting the rope 22 with the toothed belt 21 is improved, and the toothed belt 21 is further prevented from breaking.

As shown in fig. 1 and 4, the transmission mechanism 20 further includes a driving motor 25, a driving wheel 26 and a driven wheel 27, the driving motor 25 and the driven wheel 27 are both mounted on the door machine base 10, the driving wheel 26 is coaxially connected to an output end of the driving motor 25, the toothed belt 21 bypasses the driving wheel 26, the rope 22 bypasses the driven wheel 27, the connecting frame 23 is located between the driving wheel 26 and the driven wheel 27, and a gap is formed between the connecting frame 23 and the door machine base 10. When the transmission mechanism 20 works, the driving motor 25 controls the toothed belt 21, the rope 22 and the connecting frame 23 to synchronously move through the driving wheel 26, and the hanging plate 30 can be driven to move through the transmission of the transmission arm 24; of course, the rope 22 may be a low-cost belt structure such as a steel wire rope, a nylon rope, or a toothed belt.

It will be appreciated that the driving wheel 26 is coaxially connected to the output end of the driving motor 25, so that a distance of the thickness of the driving motor 25 is formed between the toothed belt 21 and the door machine base 10, thus ensuring that there is a sufficient gap between the connecting frame 23 and the door machine base 10, and that the two do not collide.

As shown in fig. 3, the transmission mechanism 20 further includes a driven wheel bracket 271, and the driven wheel 27 is mounted on the door machine base 10 through the driven wheel bracket 271; wherein, the driven wheel bracket 271 comprises a mounting surface 2711 connected with the driven wheel 27 and a foot connected with the door machine base 10; the feet comprise a first foot 2712 and a second foot 2713, and the first foot 2712 and the second foot 2713 are sequentially arranged on two sides of the driven wheel 27 along the stress direction of the driven wheel 27; the first foot 2712 is connected with the door machine base 10 through a fastener 2714, the second foot 2713 is provided with a limit foot 27131 which is inserted into the door machine base 10, and the second foot 2713 is also provided with a support foot 2715 which is propped against the door machine base 10. The fastener 2714 may be embodied as a bolt, a cotter pin, or the like.

As can be seen from the above, when the driven wheel bracket 271 is assembled to the door machine base 10, the driven wheel bracket 271 can be inserted into the door machine base 10 by the limit legs 27131 and then connected to the door machine base 10 by the fastening pieces 2714, so that the driven wheel bracket 271 can be conveniently assembled to the door machine base 10; meanwhile, the driven wheel holder 271 assembled to the door motor base 10 can be abutted against the door motor base 10 with the support legs 2715 and the first leg 2712, thus improving the stability of the assembly of the driven wheel holder 271 on the door motor base 10.

As shown in fig. 2, in an embodiment, one end of the driving arm 24 is cooperatively connected with the corresponding hanging plate 30, and specifically, the driving arm 24 and the hanging plate 30 may be connected and fixed by a bolt 242 penetrating through the driving arm; the other end of the driving arm 24 is in plug-in fit with the corresponding toothed belt pressing plate 232, so that the assembly connection between the driving arm 24 and the corresponding hanging plate 30 and the corresponding connecting frame 23 is realized.

It will be appreciated that the hanging plate 30 is used for connecting an elevator hoistway door, and is limited by structural size difference and assembly error, so that the hanging plate 30 connected to the elevator hoistway door is easy to incline back and forth, while the transmission mechanism 20 of this embodiment utilizes the plug-in fit between the transmission arm 24 and the toothed belt pressing plate 232, so that once the hanging plate 30 inclines back and forth, the transmission arm 24 can adjust the back and forth offset position relative to the toothed belt pressing plate 232 to offset the influence on the toothed belt 21 caused by the back and forth inclination of the hanging plate 30, thus ensuring that the toothed belt 21 in the transmission mechanism 20 will not deviate along with the back and forth inclination of the hanging plate 30, and further avoiding noise and abrasion of the transmission mechanism 20 due to the deviation of the toothed belt 21 during power transmission.

Specifically, the transmission arm 24 is connected with a connection shaft 241, the toothed belt pressing plate 232 is provided with an insertion hole 2321, and the insertion hole 2321 is matched with the connection shaft 241; the connecting shaft 241 is in plug-in fit with the jack 2321, so that the transmission arm 24 can be subjected to position adjustment relative to the toothed belt pressing plate 232 along the length direction of the connecting shaft 241, and thus, the plug-in fit between the transmission arm 24 and the toothed belt pressing plate 232 is realized, and the plug-in fit between the transmission arm 24 and the toothed belt pressing plate 232 is facilitated. Of course, it is also possible for those skilled in the art to provide the connecting shaft on the toothed belt pressing plate 232 and provide the insertion hole on the transmission arm 24, which will not be described herein.

Further, the connection shaft 241 is disposed through the insertion hole 2321; wherein, a gap is formed between the part of the transmission arm 24, which is opposite to the toothed belt pressing plate 232, and the toothed belt pressing plate 232; in this way, a sufficient space is provided for the adjustment of the position of the transmission arm 24 on the toothed belt pressing plate 232 along the length direction of the connecting shaft 241, and the toothed belt 21 is further ensured not to deviate along with the front-back inclination of the hanging plate 30.

The connecting shaft 241 is set to be a circular shaft 2411, and the connecting shaft 241 can rotate relative to the toothed belt pressing plate 232 under the driving of the driving arm 24, so as to adjust the installation position between the driving arm 24 and the toothed belt pressing plate 232, so that the driving arm 24 can swing relative to the toothed belt pressing plate 232 through the connecting shaft 241, when the driving arm 24 is assembled with the toothed belt pressing plate 232 and the hanging plate 30, the driving arm 24 can be in plug-in fit with the toothed belt pressing plate 232 first and then be in fit connection with the hanging plate 30, and in the process, the swinging of the driving arm 24 on the toothed belt pressing plate 232 is utilized, so that the driving arm 24 and the hanging plate 30 can be conveniently assembled and connected.

In addition, it should be noted that, the toothed belt pressing plate 232 of this embodiment may be specifically made of a non-metal material, and the connecting shaft 241 on the driving arm 24 is inserted through the toothed belt pressing plate 232 and is in clearance fit with the toothed belt pressing plate 232, so that noise generated when the toothed belt pressing plate 232 drives the driving arm 24 to move synchronously through the connecting shaft 241 is further reduced.

As shown in fig. 5 and 7, the connecting frame 23 of the present application further includes a first locking member 233, and the first locking member 233 is disposed through the toothed belt pressing plate 232 and the metal connecting plate 231 to fix the toothed belt pressing plate 232 to the metal connecting plate 231. That is, the metal connection plate 231 and the toothed belt pressing plate 232 may be connected by the first locking member 233. In this way, the connection between the metal connection plate 231 and the toothed belt pressing plate 232 is facilitated, and further the toothed belt 21 is conveniently assembled between the metal connection plate 231 and the toothed belt pressing plate 232.

Specifically, the first locking piece 233 is provided as a bolt, and a portion of the bolt passing through the toothed belt pressing plate 232 and the metal connection plate 231 is screw-fitted with a nut to fix the toothed belt pressing plate 232 to the metal connection plate 231; of course, the first locking member 233 is not limited to a bolt, and a person skilled in the art may set the first locking member 233 with other fasteners having similar structures, such as a pin shaft (not shown), and one end of the pin shaft penetrates the toothed belt pressing plate 232 and the metal connecting plate 231 and then is locked by a cotter pin (not shown) penetrating a pin hole on the pin shaft transversely.

As shown in fig. 5 and 7, the metal connection plate 231 includes a side block 2311, and the side block 2311 is disposed opposite to the toothed belt pressing plate 232; wherein, the side block 2311 is provided with a through hole 2312 for the rope 22 to pass through. Such that the connection between the cord 22 and the side stop 2311 is achieved by first passing the cord 22 through the side stop 2311 and then utilizing abutment between the portion of the cord 22 that passes through the side stop 2311 and the side stop 2311, which is not described herein. In this embodiment, the side rail 2311 is formed by bending an end of the metal connection plate 231, and in other embodiments, the side rail 2311 may be connected and fixed to the metal connection plate 231.

For example, as shown in fig. 4, the portion of the rope 22 passing through the side block 2311 is formed with the blocking head 221, at this time, an opening 2313 may be formed in the side block 2311, and the opening 2313 is communicated with the through hole 2312, so that the rope 22 can drive the blocking head 221 to be clamped into the through hole 2312 through the opening 2313, and limit of the rope 22 on the side block 2311 is achieved by using abutment between the blocking head 221 and the side block 2311, and connection and fixation between the rope 22 and the metal connecting plate 231 are achieved. In other embodiments, the portion of the cord 22 that passes through the side stop 2311 may be removably coupled to an external component, and the abutment between the external component and the side stop 2311 may be used to limit the position of the cord 22 on the side stop 2311.

In an embodiment, the transmission mechanism 20 further includes a tension adjusting assembly 28, and the tension adjusting assembly 28 can act on the rope 22 and the metal connecting plate 231 to adjust the tension of the rope 22 and the toothed belt 21, so that the requirement that the connecting frame 23 can drive the hanging plate 30 to move on the gantry crane base 10 through the transmission arm 24 when the transmission mechanism 20 works is met.

Specifically, as shown in fig. 6 and 8, the tension adjusting assembly 28 includes an elastic member 281, a limiting member 282 and a second locking member 283, wherein the elastic member 281 and the limiting member 282 are disposed at one end of the rope 22 and are mounted on a portion of the rope 22 passing through the side block 2311, so that two ends of the elastic member 281 are abutted against the side block 2311 and the limiting member 282; at least one end of the rope 22 is connected with the connection rod 222, and the second locking member 283 is connected with a portion of the connection rod 222 passing through the side rail 2311 and can be displaced and locked with respect to the connection rod 222 to adjust the length of the portion of the connection rod 222 passing through the side rail 2311. That is, the tension adjusting assembly 28 is operated to adjust the tension of the rope 22 and the toothed belt 21 by adjusting the length of the portion of the connecting rod 222 passing through the side rail 2311.

Since the number of the connecting frames 23 in the transmission mechanism 20 is two, in order to adjust the tension, the elastic member 281, the limiting member 282 and the second locking member 283 may be integrally disposed at the position of one of the connecting frames 23, that is, the elastic member 281, the limiting member 282 and the second locking member 283 are simultaneously disposed on the connecting rod 222; the elastic member 281 may be disposed at a position where one of the connecting frames 23 is located, and the second locking member 283 may be disposed at a position where the other connecting frame 23 is located, that is, the elastic member 281 and the limiting member 282 are located at one end of the cable 22, and the connecting rod 222 is located at the other end of the cable 22. And will not be described herein. In any case, the elastic member 281 abuts between the stopper 282 and the side stopper 2311 to tighten the rope 22, and the second locking member 283 cooperates with the connecting rod 222 to adjust and lock the tightening degree of the elastic member 281, thereby adjusting and locking the tightening degree of the rope 22 and the toothed belt 21. When the elastic member 281 and the limiting member 282 are located at one end of the cable 22, and the connecting rod 222 is located at the other end of the cable 22, the limiting member 282 may be used as the stopper 221 formed at the end of the cable 22.

As shown in fig. 4, in one embodiment, the elastic member 281 and the limiting member 282 are respectively sleeved on the portion of the connecting rod 222 passing through the side block 2311, so that two ends of the elastic member 281 are abutted against the side block 2311 and the limiting member 282; the second locking member 283 is coupled to the connecting rod 222 and is capable of adjusting a position of the second locking member relative to the connecting rod 222 to limit the limiting member 282 to the connecting rod 222. That is, the connection rod 222 passing through the side stopper 2311 is limited by abutment between the elastic member 281 and the side stopper 2311, thereby defining a compression position of the elastic member 281, that is, a degree of tension of the locking rope 22. In this embodiment, the limiting member 282 may be a limiting pad.

It will be appreciated that the tension adjusting assembly 28 is disposed at the position of the connecting frame 23, so that the transmission mechanism 20 of this embodiment can use the cooperation between the connecting frame 23 and the connecting rod 222 on the rope 22 to adjust the tension, that is, the transmission mechanism 20 itself can adjust the tension of the rope 22, so that the assembly application of the transmission mechanism 20 in the elevator door machine is facilitated, and the tension adjustment of the rope 22 is facilitated.

It should be noted that, the elastic member 281 is specifically configured as a spring, a rubber sleeve, a bellows, or the like, and the second locking member 283 is specifically configured to be engaged with the connecting rod 222 in a threaded manner, so that the second locking member 283 can be adjusted and locked on the connecting rod 222, and in order to prevent the second locking member 283 from being displaced on the connecting rod 222 under the urging of the elastic restoring force of the compressed elastic member 281 after locking, the second locking member 283 may be specifically configured as two nuts, which abut and are respectively assembled on the connecting rod 222 in a threaded manner, and it is of course also possible for a person skilled in the art to configure the second locking member 283 as one nut, and then to connect and fix the nuts to the connecting rod 222 in a welded manner, which will not be explained herein.

Further, as shown in fig. 8, the portion of the connecting rod 222 located in the through hole 2312 of the side block 2311 is circumferentially limited with the side block 2311, and in particular, a plane may be formed between the portion of the side block 2311 contacting with the connecting rod 222, so that the connecting rod 222 and the rope 22 do not rotate relative to the side block 2311 along with the screwing of the second locking member 283 in the process of adjusting the tension of the rope 22, thereby being capable of conveniently adjusting the tension of the rope 22.

As shown in fig. 5 to 8, the metal connecting plate 231 is provided with a tensioning in-place prompt mechanism, and the tensioning in-place prompt mechanism is arranged at one end of the metal connecting plate 231, connected with the elastic piece 281, and is used for prompting that the limiting piece 282 is in place; the tensioning in-place prompting mechanism comprises an in-place mark 2314, and the limiting piece 282 can be aligned with the in-place mark 2314; alternatively, the tensioning in-place prompting mechanism includes a flange 2315 disposed on the metal connecting plate 231, and the limiting member 282 can abut against the flange 2315. That is, when the transmission mechanism 20 adjusts the tension of the rope 22 and the toothed belt 21, the alignment between the mark 2314 on the metal connecting plate 231 and the stopper 282 or the abutment between the flange 2315 on the metal connecting plate 231 and the stopper 282 can be used to realize the adjustment setting of the tension of the rope 22 and the toothed belt 21, so that the consistency of the adjustment of the tension of the rope 22 and the toothed belt 21 is ensured; thus, the operation of manually adjusting the tension of the rope 22 and the toothed belt 21 is facilitated.

Further, the elastic member 281 is configured as a compression spring, so that when the tension is adjusted, the tension force of the transmission mechanism 20 is equal to the spring force of the compression spring, so as to facilitate adjustment of the tension force. Thus, when the stop 282 reaches the tension in place, the tension reaches the design value.

The technical features of the above embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

It will be appreciated by persons skilled in the art that the above embodiments have been provided for the purpose of illustrating the application and are not to be construed as limiting the application, and that suitable modifications and variations of the above embodiments are within the scope of the application as claimed.

Claims

1. The elevator door machine comprises a door machine base (10), a transmission mechanism (20) and two hanging plates (30), wherein the two hanging plates (30) are arranged on the door machine base (10) in a rolling manner and are in transmission connection with the transmission mechanism (20), and the two hanging plates (30) can move oppositely or move reversely under the drive of the transmission mechanism (20); the transmission mechanism (20) comprises a toothed belt (21), a rope (22), two connecting frames (23) and two transmission arms (24), wherein the toothed belt (21) is connected with the rope (22) through the two connecting frames (23), the two transmission arms (24) and the two hanging plates (30) are arranged in a one-to-one correspondence manner, and the hanging plates (30) can be connected with the corresponding connecting frames (23) through the corresponding transmission arms (24);

the connecting frame (23) comprises a metal connecting plate (231) and a toothed belt pressing plate (232), the metal connecting plate (231) and the toothed belt pressing plate (232) can be matched with each other and are jointly used for clamping the toothed belt (21), the rope (22) is connected to the metal connecting plate (231) and stretches out of one end of the toothed belt pressing plate (232), and the transmission arm (24) is connected to the toothed belt pressing plate (232).

2. Elevator door machine according to claim 1, characterized in that one end of the transmission arm (24) is connected with the corresponding hanging plate (30) in a matching way, and the other end of the transmission arm (24) is connected with the corresponding toothed belt pressing plate (232) in a plugging way;

the transmission arm (24) is connected with a connecting shaft (241), the toothed belt pressing plate (232) is provided with an inserting hole (2321), and the inserting hole (2321) is matched with the connecting shaft (241); the connecting shaft (241) is in plug-in fit with the plug hole (2321) so that the transmission arm (24) can be adjusted in position relative to the toothed belt pressing plate (232) along the length direction of the connecting shaft (241).

3. Elevator door machine according to claim 2, characterized in that the connecting shaft (241) is arranged through the socket (2321);

wherein, a gap is formed between the part of the transmission arm (24) which is opposite to the toothed belt pressing plate (232) and the toothed belt pressing plate (232).

4. Elevator door machine according to claim 1, characterized in that the transmission mechanism (20) further comprises a driving motor (25), a driving wheel (26) and a driven wheel (27), the driving motor (25) and the driven wheel (27) are both mounted on the door machine base (10), the driving wheel (26) is coaxially connected to the output end of the driving motor (25), the toothed belt (21) bypasses the driving wheel (26), the rope (22) bypasses the driven wheel (27), the connecting frame (23) is located between the driving wheel (26) and the driven wheel (27), and a gap is formed between the connecting frame (23) and the door machine base (10).

5. Elevator door machine according to claim 4, characterized in that the transmission mechanism (20) further comprises a driven wheel support (271), the driven wheel (27) being mounted on the door machine base (10) by means of the driven wheel support (271);

wherein the driven wheel bracket (271) comprises a mounting surface (2711) connected with the driven wheel (27) and a foot connected with the door machine base (10); the feet comprise a first foot (2712) and a second foot (2713), and the first foot (2712) and the second foot (2713) are sequentially arranged on two sides of the driven wheel (27) along the stress direction of the driven wheel (27); the first foot (2712) is connected with the door machine base (10) through a fastener (2714), the second foot (2713) is provided with a limit foot (27131) which is inserted into the door machine base (10), and the second foot (2713) is also provided with a supporting foot (2715) which is propped against the door machine base (10).

6. The elevator door machine according to claim 4, characterized in that the connecting frame (23) further comprises a first locking member (233), the first locking member (233) being arranged through the toothed belt press plate (232) and the metal connecting plate (231) to fix the toothed belt press plate (232) to the metal connecting plate (231).

7. Elevator door machine according to claim 1, characterized in that the metal connection plate (231) comprises a side stop (2311), which side stop (2311) is arranged opposite to the toothed belt press plate (232);

wherein, the side block (2311) is provided with a through hole (2312) for the rope (22) to pass through.

8. Elevator door machine according to claim 7, characterized in that the transmission mechanism (20) further comprises a tension adjusting assembly (28), which tension adjusting assembly (28) can act on the rope (22) and the metal connection plate (231) to adjust the tension of the rope (22) and the toothed belt (21).

9. The door machine according to claim 8, wherein the tension adjusting assembly (28) comprises an elastic member (281), a limiting member (282) and a second locking member (283), the elastic member (281) and the limiting member (282) are disposed at one end of the rope (22), and are mounted to the portion of the rope (22) passing through the side rail (2311) such that both ends of the elastic member (281) are abutted against the side rail (2311) and the limiting member (282);

a connecting rod (222) is connected to at least one end of the rope (22), and the second locking piece (283) is connected to a portion of the connecting rod (222) passing through the side block (2311) and can be displaced relative to the connecting rod (222) and locked in position to adjust the length of the portion of the connecting rod (222) passing through the side block (2311).

10. Elevator door machine according to claim 9, characterized in that the metal connection plate (231) is provided with a tensioning in-place prompt mechanism, which is arranged at one end of the metal connection plate (231) connected with the elastic piece (281) for in-place prompt of the limiting piece (282);

wherein the tensioning in-place prompting mechanism comprises an in-place mark (2314), and the limiting piece (282) can be aligned with the in-place mark (2314); or, the tensioning in-place prompt mechanism comprises a flange (2315) arranged on the metal connecting plate (231), and the limiting piece (282) can abut against the flange (2315).