elevator door operator

Abstract

The elevator door operator claimed in this invention includes a door operator base, a transmission mechanism, and two mounting plates. The two mounting plates are rotatably mounted on the door operator base and are connected to the transmission mechanism. The two mounting plates can move towards each other or away from each other under the drive of the transmission mechanism. The transmission mechanism includes a toothed belt, a rope, two connecting frames, and two transmission arms. The toothed belt and the rope are connected by the two connecting frames. The two connecting frames, two transmission arms, and two mounting plates are arranged in a one-to-one correspondence, and each mounting plate can be connected to its corresponding connecting frame via its corresponding transmission arm. Each connecting frame includes a metal connecting plate and a toothed belt pressure plate. The metal connecting plate and the toothed belt pressure plate cooperate to clamp the toothed belt. The rope is connected to one end of the metal connecting plate extending beyond the toothed belt pressure plate, and the transmission arm is connected to the toothed belt pressure plate. This invention not only reduces the noise generated when the transmission mechanism moves the mounting plates but also prevents the toothed belt from breaking.

Description

Technical Field

[0001] This invention belongs to the technical field of elevators, and in particular relates to an elevator door operator. Background Technology

[0002] An elevator door operator is a mechanism responsible for opening and closing elevator hall and car doors. It is driven by a transmission mechanism to close or open the hall or car doors.

[0003] In an elevator door operator, two mounting plates connect to the two elevator hall and car doors. When the door operator is working, the transmission mechanism drives the two mounting plates to move in opposite directions, thus closing or opening the doors. Currently, existing elevator door operators typically use toothed pressure plates connected to a toothed belt on the transmission mechanism. This allows the toothed belt to drive the two mounting plates to move in opposite directions simultaneously. However, because the toothed belt relies on the interlocking teeth between the belt and the pressure plates for power transmission, this generates significant noise when the belt moves synchronously with the mounting plates. Furthermore, the concentrated stress on the belt during this process makes it prone to breakage. Summary of the Invention

[0004] In view of this, it is necessary to provide an elevator door operator to solve the above-mentioned technical problems.

[0005] An elevator door operator includes a door operator base, a transmission mechanism, and two mounting plates. The two mounting plates are rotatably mounted on the door operator base and are connected to the transmission mechanism. The two mounting plates can move towards each other or away from each other under the drive of the transmission mechanism. The transmission mechanism includes a toothed belt, a rope, two connecting frames, and two transmission arms. The toothed belt and the rope are connected by the two connecting frames. The two connecting frames, the two transmission arms, and the two mounting plates are arranged in a one-to-one correspondence, and the mounting plates can be connected to the corresponding connecting frame through the corresponding transmission arm.

[0006] The connecting frame includes a metal connecting plate and a toothed belt pressure plate. The metal connecting plate and the toothed belt pressure plate can cooperate with each other and are used together to clamp the toothed belt. The rope is connected to one end of the metal connecting plate that extends out of the toothed belt pressure plate, and the transmission arm is connected to the toothed belt pressure plate.

[0007] Understandably, the hanging plate is connected to the toothed belt pressure plate via a corresponding transmission arm, enabling the transmission mechanism to drive the hanging plate to move synchronously using the connecting frame. This reduces the noise generated when the transmission mechanism moves the hanging plate. Furthermore, the toothed belt is subjected to overall force during this process, which helps prevent the toothed belt from breaking. At the same time, the rope is connected by a metal connecting plate on the connecting frame, which increases the pull-out force when the connecting frame connects the rope and the toothed belt, further preventing the toothed belt from breaking.

[0008] In one embodiment, one end of the transmission arm is connected to the corresponding hanging plate, and the other end of the transmission arm is inserted into the corresponding toothed belt pressure plate.

[0009] The transmission arm is connected to a connecting shaft, and the toothed belt pressure plate has an insertion hole that matches the connecting shaft. The connecting shaft is inserted into the insertion hole so that the transmission arm can be adjusted relative to the toothed belt pressure plate along the length of the connecting shaft.

[0010] Understandably, the transmission arm and the toothed belt pressure plate are connected by a plug-in joint. This allows the transmission arm to adjust its position relative to the toothed belt pressure plate when the mounting plate tilts forward or backward, thus offsetting the effect of the tilt on the toothed belt. This ensures that the toothed belt in the transmission mechanism does not shift with the tilt of the mounting plate, thereby avoiding noise and wear caused by the shift of the toothed belt during power transmission. Furthermore, the plug-in joint between the transmission arm and the toothed belt pressure plate is achieved through a connecting shaft on the transmission arm and a hole on the toothed belt pressure plate, facilitating the connection between them.

[0011] In one embodiment, the connecting shaft extends through the insertion hole;

[0012] There is a gap between the part of the transmission arm that faces the toothed belt pressure plate and the toothed belt pressure plate.

[0013] It is understandable that by setting the connecting shaft through the insertion hole and creating a gap between the transmission arm and the toothed belt pressure plate, sufficient space can be provided for the position adjustment of the transmission arm on the toothed belt pressure plate along the length of the connecting shaft. This further ensures that the toothed belt will not shift as the hanging plate tilts back and forth.

[0014] In one embodiment, the transmission mechanism further includes a drive motor, a drive wheel, and a driven wheel. The drive motor and the driven wheel are both mounted on the gantry base. The drive wheel is coaxially connected to the output end of the drive motor. The toothed belt passes around the drive wheel, the rope passes around the driven wheel, and the connecting frame is located between the drive wheel and the driven wheel. A gap is formed between the connecting frame and the gantry base.

[0015] Understandably, the drive wheel is coaxially connected to the output end of the drive motor, creating a distance equal to the thickness of the drive motor between the toothed belt and the door operator base. This ensures that there is sufficient clearance between the connecting frame and the door operator base, preventing them from colliding.

[0016] In one embodiment, the transmission mechanism further includes a driven wheel bracket, wherein the driven wheel (27) is mounted on the gantry base via the driven wheel bracket;

[0017] The driven wheel bracket includes a mounting surface connected to the driven wheel and a base connected to the gantry base. The base includes a first base and a second base, which are sequentially arranged on both sides of the driven wheel along the force direction of the driven wheel. The first base is connected to the gantry base by fasteners, and the second base has a limiting foot that is inserted into the gantry base. The second base also has a support foot that abuts against the gantry base.

[0018] Understandably, the driven wheel bracket is inserted into the gantry crane base with a limiting foot and connected to the gantry crane base with fasteners, which facilitates the assembly of the driven wheel bracket to the gantry crane base. At the same time, the driven wheel bracket is abutted against the gantry crane base with a support foot and a first bottom foot, which improves the stability of the driven wheel bracket on the gantry crane base.

[0019] In one embodiment, the connecting frame further includes a first locking member that extends through the toothed belt pressure plate and the metal connecting plate to fix the toothed belt pressure plate to the metal connecting plate.

[0020] It is understandable that the first locking element is used to achieve the mating connection between the metal connecting plate and the toothed belt pressure plate, thus facilitating the connection between the metal connecting plate and the toothed belt pressure plate, and further facilitating the assembly of the toothed belt between the metal connecting plate and the toothed belt pressure plate.

[0021] In one embodiment, the metal connecting plate includes a side stop disposed opposite the toothed belt pressure plate;

[0022] The side guard has a through hole for the rope to pass through.

[0023] In one embodiment, the transmission mechanism further includes a tension adjustment component that can act on the rope and the metal connecting plate to adjust the tension of the rope and the toothed belt.

[0024] In one embodiment, the tension adjustment assembly includes an elastic element, a limiting element, and a second locking element. The elastic element and the limiting element are disposed at one end of the rope and are both installed on the portion of the rope that passes through the side guard, so that the two ends of the elastic element abut against the side guard and the limiting element.

[0025] A connecting rod is connected to at least one end of the rope, and the second locking member is connected to the portion of the connecting rod that passes through the side guard, and can be displaced relative to the connecting rod and locked in position to adjust the length of the portion of the connecting rod that passes through the side guard.

[0026] It is understandable that by using a limiting component to compress the elastic component, the length of the connecting rod passing through the side block can be adjusted, thereby adjusting the tension of the rope. This allows the transmission mechanism to adjust the tension of the rope and toothed belt on the connecting frame, which facilitates the assembly and application of the transmission mechanism in elevator door operators and makes it easier to adjust the tension of the rope and toothed belt.

[0027] In one embodiment, the metal connecting plate is provided with a tensioning completion indicator mechanism, which is disposed at one end of the metal connecting plate connected to the elastic member, and is used to indicate that the limiting member is in place;

[0028] The tensioning in place indicator mechanism includes an in place mark, and the limiting member can be aligned with the in place mark; or, the tensioning in place indicator mechanism includes a stop edge disposed on the metal connecting plate, and the limiting member can abut against the stop edge.

[0029] It is understandable that a tensioning indication mechanism is used to indicate the position of the limit component and to indicate the tension of the rope and toothed belt, thus facilitating the adjustment of the tension of the rope and toothed belt.

[0030] Compared with the prior art, this application has the following advantages:

[0031] The elevator door operator claimed in this application has a hanging plate connected to a toothed belt pressure plate via a corresponding transmission arm. This allows the transmission mechanism to drive the hanging plate to move synchronously using a connecting frame. This reduces the noise generated when the transmission mechanism moves the hanging plate. Furthermore, the toothed belt is subjected to overall force during this process, which helps prevent the toothed belt from breaking. At the same time, the rope is connected by a metal connecting plate on the connecting frame, which increases the pull-out force when the connecting frame connects the rope and the toothed belt, further preventing the toothed belt from breaking. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a structural schematic diagram of the elevator door operator provided in this application;

[0034] Figure 2 for Figure 1 A partial structural diagram of an elevator door operator;

[0035] Figure 3 for Figure 1 A schematic diagram of another part of the elevator door operator's structure;

[0036] Figure 4 This is a partial structural schematic diagram of the transmission mechanism in this application;

[0037] Figure 5 This is an exploded view of a connecting frame provided in an embodiment of this application;

[0038] Figure 6 for Figure 5 A schematic diagram of the assembly structure of the connecting frame, toothed belt, rope, and tension adjustment components;

[0039] Figure 7 This is a schematic diagram of the assembly structure of the connecting frame provided in an embodiment of this application;

[0040] Figure 8 for Figure 7 A schematic diagram of the assembly structure of the connecting frame, toothed belt, rope, and tension adjustment components.

[0041] Reference numerals: 100, elevator door operator; 10, door operator base; 20, transmission mechanism; 21, toothed belt; 22, rope; 221, stop; 222, connecting rod; 23, connecting frame; 231, metal connecting plate; 2311, side stop; 2312, through hole; 2313, opening; 2314, mark; 2315, edge; 232, toothed belt pressure plate; 2321, insertion hole; 233, first locking element; 24, transmission arm; 25 1. Connecting shaft; 2411. Round shaft; 242. Bolt; 25. Drive motor; 26. Drive wheel; 27. Driven wheel; 271. Driven wheel bracket; 2711. Mounting surface; 2712. First foot; 2713. Second foot; 27131. Limiting foot; 2714. Fastener; 2715. Support foot; 28. Tension adjustment assembly; 281. Elastic element; 282. Limiting element; 283. Second locking element; 30. Hanging plate. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that when a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intervening component.

[0044] Unless otherwise defined, 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 invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] like Figure 1 , Figure 2As shown, an embodiment of this application provides an elevator door operator 100, including a door operator base 10, a transmission mechanism 20, and two mounting plates 30. The two mounting plates 30 are rotatably mounted on the door operator base 10 and are connected to the transmission mechanism 20. The two mounting plates 30 can move towards each other or away from each other under the drive of the transmission mechanism 20. The transmission mechanism 20 includes a toothed belt 21, a rope 22, two connecting frames 23, and two transmission arms 24. The toothed belt 21 and the rope 22 are connected by the two connecting frames 23. Each connecting frame 23, two transmission arms 24, and two hanging plates 30 are arranged in a corresponding manner, and the hanging plates 30 can be connected to the corresponding connecting frame 23 through the corresponding transmission arm 24. The connecting frame 23 includes a metal connecting plate 231 and a toothed belt pressure plate 232. The metal connecting plate 231 and the toothed belt pressure plate 232 can cooperate with each other and are used together to clamp the toothed belt 21. The rope 22 is connected to the metal connecting plate 231 and extends out of the toothed belt pressure plate 232. The transmission arm 24 is connected to the toothed belt pressure plate 232.

[0046] It is understood that the hanging plate 30 is connected to the toothed belt pressure plate 232 via the corresponding transmission arm 24, so that the transmission mechanism 20 can drive the hanging plate 30 to move synchronously via the connecting frame 23. In this way, compared with the toothed belt 21 directly driving the hanging plate 30 to move, the noise generated when the transmission mechanism 20 drives the hanging plate 30 to move is reduced. Moreover, in this process, the toothed belt 21 is subjected to force as a whole, which helps to prevent the toothed belt 21 from breaking. At the same time, the rope 22 is connected by the metal connecting plate 231 on the connecting frame 23, which increases the pull-out force when the connecting frame 23 connects the rope 22 and the toothed belt 21, further preventing the toothed belt 21 from breaking.

[0047] like Figure 1 , Figure 4 As shown, the transmission mechanism 20 also includes a drive motor 25, a drive wheel 26, and a driven wheel 27. Both the drive motor 25 and the driven wheel 27 are mounted on the gantry base 10. The drive wheel 26 is coaxially connected to the output end of the drive motor 25. A toothed belt 21 passes around the drive wheel 26, and a rope 22 passes around the driven wheel 27. A connecting frame 23 is located between the drive wheel 26 and the driven wheel 27, with a gap between the connecting frame 23 and the gantry base 10. This allows the drive motor 25 to control the synchronous movement of the toothed belt 21, rope 22, and connecting frame 23 via the drive wheel 26 when the transmission mechanism 20 is working. This movement is then achieved through the transmission arm 24, which in turn drives the movement of the hanging plate 30. Of course, the rope 22 can be a low-cost transmission belt structure such as a steel wire rope, nylon rope, or toothless belt.

[0048] It is understood that the drive wheel 26 is coaxially connected to the output end of the drive motor 25, so that there is a distance between the toothed belt 21 and the door machine base 10 equal to the thickness of the drive motor 25. This ensures that there is sufficient clearance between the connecting frame 23 and the door machine base 10, and the two will not collide.

[0049] like Figure 3 As shown, the transmission mechanism 20 also includes a driven wheel bracket 271, through which the driven wheel 27 is mounted on the gantry base 10. The driven wheel bracket 271 includes a mounting surface 2711 connected to the driven wheel 27 and a foot connected to the gantry base 10. The foot includes a first foot 2712 and a second foot 2713, which are sequentially arranged on both sides of the driven wheel 27 along the force direction. The first foot 2712 is connected to the gantry base 10 via a fastener 2714. The second foot 2713 has a limiting foot 27131 that inserts into the gantry base 10, and a support foot 2715 that abuts against the gantry base 10. It should be noted that the fastener 2714 can specifically be a bolt, cotter pin, etc.

[0050] As can be seen from the above, when the driven wheel bracket 271 is assembled onto the gantry base 10, the driven wheel bracket 271 can first be inserted into the gantry base 10 using the limiting foot 27131, and then connected to the gantry base 10 using the fastener 2714. This facilitates the assembly of the driven wheel bracket 271 onto the gantry base 10. At the same time, the driven wheel bracket 271 assembled onto the gantry base 10 can abut against the gantry base 10 using the support foot 2715 and the first bottom foot 2712, thus improving the stability of the driven wheel bracket 271 assembled onto the gantry base 10.

[0051] like Figure 2 As shown, in one embodiment, one end of the transmission arm 24 is connected to the corresponding hanging plate 30, specifically by using a bolt 242 that passes through the transmission arm 24 and the hanging plate 30 for connection and fixation; the other end of the transmission arm 24 is inserted into the corresponding toothed belt pressure plate 232, thus realizing the assembly connection between the transmission arm 24, the corresponding hanging plate 30 and the corresponding connecting frame 23.

[0052] It is understood that the mounting plate 30 is used to connect the elevator hall and car doors. Due to structural size differences and assembly errors, the mounting plate 30 connected to the elevator hall and car doors is prone to tilting forward and backward. However, the transmission mechanism 20 of this embodiment utilizes the insertion and engagement between the transmission arm 24 and the toothed belt pressure plate 232. This allows the transmission arm 24 to adjust its position relative to the toothed belt pressure plate 232 when the mounting plate 30 tilts forward or backward, thereby offsetting the effect of the tilting of the mounting plate 30 on the toothed belt 21. In this way, it is ensured that the toothed belt 21 in the transmission mechanism 20 will not shift with the tilting of the mounting plate 30, thus avoiding noise and wear caused by the shifting of the toothed belt 21 during power transmission in the transmission mechanism 20.

[0053] Specifically, a connecting shaft 241 is connected to the transmission arm 24, and an insertion hole 2321 is provided on the toothed belt pressure plate 232, which is matched with the connecting shaft 241. The connecting shaft 241 and the insertion hole 2321 are inserted into each other, so that the position of the transmission arm 24 relative to the toothed belt pressure plate 232 can be adjusted along the length direction of the connecting shaft 241. In this way, the insertion and engagement between the transmission arm 24 and the toothed belt pressure plate 232 is realized, so as to facilitate the insertion and engagement between the transmission arm 24 and the toothed belt pressure plate 232. Of course, those skilled in the art can also set the connecting shaft on the toothed belt pressure plate 232 and provide an insertion hole on the transmission arm 24, which will not be elaborated here.

[0054] Furthermore, the connecting shaft 241 is provided through the insertion hole 2321; wherein, a gap is formed between the part of the transmission arm 24 facing the toothed belt pressure plate 232 and the toothed belt pressure plate 232; thus, sufficient space is provided for the position adjustment of the transmission arm 24 on the toothed belt pressure plate 232 along the length direction of the connecting shaft 241, which further ensures that the toothed belt 21 will not shift as the hanging plate 30 tilts back and forth.

[0055] The connecting shaft 241 is a round shaft 2411, and the connecting shaft 241 can rotate relative to the toothed belt pressure plate 232 under the drive of the transmission arm 24 to adjust the installation position between the transmission arm 24 and the toothed belt pressure plate 232. This allows the transmission arm 24 to swing relative to the toothed belt pressure plate 232 through the connecting shaft 241. Thus, when the transmission arm 24 is assembled with the toothed belt pressure plate 232 and the hanging plate 30, the transmission arm 24 can first be inserted and engaged with the toothed belt pressure plate 232, and then be engaged and connected with the hanging plate 30. During this process, the swing of the transmission arm 24 on the toothed belt pressure plate 232 facilitates the assembly and connection of the transmission arm 24 and the hanging plate 30.

[0056] In addition, it should be noted that the toothed belt pressure plate 232 in this embodiment can be made of non-metallic material, and the connecting shaft 241 on the transmission arm 24 is inserted through the toothed belt pressure plate 232 and has a clearance fit with the toothed belt pressure plate 232. In this way, the noise generated when the toothed belt pressure plate 232 drives the transmission arm 24 to move synchronously through the connecting shaft 241 is further reduced.

[0057] like Figure 5 , Figure 7 As shown, the connecting frame 23 of this application also includes a first locking member 233, which penetrates the toothed belt pressure plate 232 and the metal connecting plate 231 to fix the toothed belt pressure plate 232 to the metal connecting plate 231. In other words, the metal connecting plate 231 and the toothed belt pressure plate 232 can be connected by the first locking member 233. This facilitates the connection between the metal connecting plate 231 and the toothed belt pressure plate 232, and further facilitates the assembly of the toothed belt 21 between the metal connecting plate 231 and the toothed belt pressure plate 232.

[0058] Specifically, the first locking element 233 is a bolt. The portion of the bolt that passes through the toothed belt pressure plate 232 and the metal connecting plate 231 is threaded with a nut to fix the toothed belt pressure plate 232 to the metal connecting plate 231. Of course, the first locking element 233 is not limited to a bolt. For those skilled in the art, the first locking element 233 can be provided with other fasteners with similar structures, such as a pin (not shown). One end of the pin passes through the toothed belt pressure plate 232 and the metal connecting plate 231, and then a cotter pin (not shown) passes laterally through the pin hole on the pin for locking.

[0059] like Figure 5 , Figure 7 As shown, the metal connecting plate 231 includes a side stop 2311, which is positioned opposite the toothed pressure plate 232. The side stop 2311 has a through hole 2312 for the rope 22 to pass through. When connecting the rope 22 to the side stop 2311, the rope 22 can first be passed through the side stop 2311, and then the connection is achieved by the abutment between the portion of the rope 22 that passes through the side stop 2311 and the side stop 2311. This will not be elaborated further here. In this embodiment, the side stop 2311 is formed by bending the end of the metal connecting plate 231. In other embodiments, the side stop 2311 can also be connected and fixed to the metal connecting plate 231.

[0060] For example, such as Figure 4As shown, a stop 221 is formed on the portion of the rope 22 that passes through the side stop 2311. An opening 2313 can be provided on the side stop 2311, communicating with a through hole 2312. This allows the rope 22 to drive the stop 221 through the opening 2313 and into the through hole 2312. The abutment between the stop 221 and the side stop 2311 limits the rope 22 on the side stop 2311 and secures the connection between the rope 22 and the metal connecting plate 231. In other embodiments, an external component can be detachably connected to the portion of the rope 22 that passes through the side stop 2311. The abutment between the external component and the side stop 2311 also limits the rope 22 on the side stop 2311.

[0061] In one embodiment, the transmission mechanism 20 further includes a tension adjustment component 28, which 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. This satisfies the requirement that when the transmission mechanism 20 is working, the connecting frame 23 can drive the hanging plate 30 to move on the gantry base 10 through the transmission arm 24.

[0062] Specifically, such as Figure 6 , Figure 8 As shown, the tension adjustment assembly 28 includes an elastic element 281, a limiting element 282, and a second locking element 283. The elastic element 281 and the limiting element 282 are disposed at one end of the rope 22 and are both installed on the portion of the rope 22 that passes through the side stop 2311, so that both ends of the elastic element 281 abut against the side stop 2311 and the limiting element 282. A connecting rod 222 is connected to at least one end of the rope 22. The second locking element 283 is connected to the portion of the connecting rod 222 that passes through the side stop 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 that passes through the side stop 2311. In other words, when the tension adjustment assembly 28 is working, the tension of the rope 22 and the toothed belt 21 is adjusted by adjusting the length of the portion of the connecting rod 222 that passes through the side stop 2311.

[0063] Since there are two connecting frames 23 in the transmission mechanism 20, in order to adjust the tension, the elastic element 281, the limiting element 282, and the second locking element 283 can be integrated into one of the connecting frames 23, that is, the elastic element 281 and the limiting element 282 and the second locking element 283 are simultaneously located on the connecting rod 222; alternatively, the elastic element 281 can be located at one of the connecting frames 23, and the second locking element 283 can be located at the other connecting frame 23, that is, the elastic element 281 and the limiting element 282 are located at one end of the rope 22, and the connecting rod 222 is located at the other end of the rope 22. Further details will not be elaborated here. It should be noted that, regardless of the configuration, the elastic element 281 abuts against the limiting element 282 and the side stop 2311 to tighten the rope 22. The tension of the elastic element 281 is then adjusted and locked by the cooperation of the second locking element 283 and the connecting rod 222, thereby adjusting and locking the tension of the rope 22 and the toothed belt 21. When the elastic element 281 and the limiting element 282 are located at one end of the rope 22, and the connecting rod 222 is located at the other end of the rope 22, the limiting element 282 can be served by the stop 221 formed at the end of the rope 22.

[0064] like Figure 4 As shown, in one embodiment, both the elastic element 281 and the limiting element 282 are fitted onto the portion of the connecting rod 222 that passes through the side stop 2311, so that both ends of the elastic element 281 abut against the side stop 2311 and the limiting element 282; the second locking element 283 is connected to the connecting rod 222 and can be adjusted relative to the connecting rod 222 to limit the limiting element 282 to the connecting rod 222. That is, the connecting rod 222 passing through the side stop 2311 is specifically limited by the abutment between the elastic element 281 and the side stop 2311, thereby limiting the compression position of the elastic element 281, i.e., locking the tension of the rope 22. In this embodiment, the limiting element 282 can specifically be a limiting washer.

[0065] It is understood that by placing the tension adjustment component 28 at the location of the connecting frame 23, the transmission mechanism 20 of this embodiment can adjust the tension through the cooperation between the connecting frame 23 and the connecting rod 222 on the rope 22. That is, the transmission mechanism 20 itself can adjust the tension of the rope 22. This facilitates the assembly and application of the transmission mechanism 20 in the elevator door operator and makes it easier to adjust the tension of the rope 22.

[0066] It should be noted that the aforementioned elastic element 281 is specifically configured as a spring, rubber sleeve, bellows, etc., and the second locking element 283 is specifically engaged with the connecting rod 222 by means of threads, so that the second locking element 283 can be adjusted and locked on the connecting rod 222. In order to prevent the second locking element 283 from shifting on the connecting rod 222 after locking due to the elastic restoring force of the compressed elastic element 281, the second locking element 283 can be configured as two nuts, which are abutted against and respectively threaded onto the connecting rod 222. Of course, for those skilled in the art, the second locking element 283 can also be configured as a single nut, and then the nut can be connected and fixed to the connecting rod 222 by welding. This will not be elaborated here.

[0067] Furthermore, such as Figure 8 As shown, the portion of the connecting rod 222 located within the through hole 2312 on the side stop 2311 is circumferentially limited with respect to the side stop 2311. Specifically, a plane can be formed between the part of the side stop 2311 and the connecting rod 222 that contacts each other, so that during the adjustment of the tension of the rope 22, the connecting rod 222 and the rope 22 will not rotate relative to the side stop 2311 as the second locking member 283 is turned. In this way, it can facilitate the adjustment of the tension of the rope 22.

[0068] like Figures 5 to 8 As shown, the metal connecting plate 231 is provided with a tensioning completion indicator mechanism. The tensioning completion indicator mechanism is disposed on one end of the metal connecting plate 231 connected to the elastic member 281, and is used to indicate that the limiting member 282 is in place. The tensioning completion indicator mechanism includes a completion mark 2314, and the limiting member 282 can be aligned with the completion mark 2314. Alternatively, the tensioning completion indicator mechanism includes a retaining edge 2315 disposed on the metal connecting plate 231, and the limiting member 282 can abut against the retaining edge 2315. In other words, when adjusting the tension of the rope 22 and the toothed belt 21, the transmission mechanism 20 can use the alignment between the mark 2314 on the metal connecting plate 231 and the limiting member 282, or the abutment between the stop edge 2315 on the metal connecting plate 231 and the limiting member 282, to achieve the setting of the tension adjustment of the rope 22 and the toothed belt 21. This ensures the consistency of the tension adjustment of the rope 22 and the toothed belt 21; thus, it is convenient for manual operation of adjusting the tension of the rope 22 and the toothed belt 21.

[0069] Furthermore, if the elastic element 281 is set as a compression spring, then when adjusting the tension, the tensioning force of the transmission mechanism 20 is equal to the spring force of the compression spring, which facilitates the adjustment of the tensioning force. In this way, when the limiting element 282 reaches the tensioning position, the tensioning force has reached the design value.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any appropriate changes and variations made to the above embodiments within the essential spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An elevator door operator, comprising a door operator base (10), a transmission mechanism (20), and two mounting plates (30), wherein the two mounting plates (30) are rotatably mounted on the door operator base (10) and are connected to the transmission mechanism (20) in a transmission manner, and the two mounting plates (30) are capable of moving towards each other or away from each other under the drive of the transmission mechanism (20); characterized in that, The transmission mechanism (20) includes a toothed belt (21), a rope (22), two connecting frames (23) and two transmission arms (24). The toothed belt (21) and the rope (22) are connected by the two connecting frames (23). The two connecting frames (23), the two transmission arms (24) and the two hanging plates (30) are arranged in a one-to-one correspondence, and the hanging plates (30) can be connected to 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 pressure plate (232). The metal connecting plate (231) and the toothed belt pressure plate (232) can cooperate with each other and are used together to clamp the toothed belt (21). The rope (22) is connected to one end of the metal connecting plate (231) that extends out of the toothed belt pressure plate (232). The transmission arm (24) is connected to the toothed belt pressure plate (232). One end of the transmission arm (24) is connected to the corresponding hanging plate (30), and the other end of the transmission arm (24) is inserted into the corresponding toothed belt pressure plate (232). A connecting shaft (241) is connected to the transmission arm (24), and an insertion hole (2321) is provided on the toothed belt pressure plate (232), which is matched to the connecting shaft (241). The connecting shaft (241) and the insertion hole (2321) are inserted into each other so that the transmission arm (24) can be adjusted relative to the toothed belt pressure plate (232) along the length direction of the connecting shaft (241). The connecting shaft (241) is provided through the insertion hole (2321); wherein, a gap is formed between the part of the transmission arm (24) facing the toothed belt pressure plate (232) and the toothed belt pressure plate (232); The metal connecting plate (231) includes a side stop (2311), which is positioned opposite the toothed belt pressure plate (232); wherein the side stop (2311) has a through hole (2312) for the rope (22) to pass through.

2. The elevator door operator according to claim 1, characterized in that, The transmission mechanism (20) further includes a drive motor (25), a drive wheel (26), and a driven wheel (27). The drive motor (25) and the driven wheel (27) are both mounted on the gantry base (10). The drive wheel (26) is coaxially connected to the output end of the drive motor (25). The toothed belt (21) passes around the drive wheel (26), and the rope (22) passes around the driven wheel (27). The connecting frame (23) is located between the drive wheel (26) and the driven wheel (27), and a gap is formed between the connecting frame (23) and the gantry base (10).

3. The elevator door operator according to claim 2, characterized in that, The transmission mechanism (20) further includes a driven wheel bracket (271), and the driven wheel (27) is mounted on the gantry base (10) via the driven wheel bracket (271); The driven wheel bracket (271) includes a mounting surface (2711) connected to the driven wheel (27) and a base connected to the gantry base (10). The base includes a first base (2712) and a second base (2713). Along the force direction of the driven wheel (27), the first base (2712) and the second base (2713) are sequentially arranged on both sides of the driven wheel (27). The first base (2712) is connected to the gantry base (10) by a fastener (2714). The second base (2713) has a limiting foot (27131) that is inserted into the gantry base (10). The second base (2713) also has a support foot (2715) that abuts against the gantry base (10).

4. The elevator door operator according to claim 2, characterized in that, The connecting frame (23) further includes a first locking member (233), which is disposed through the toothed belt pressure plate (232) and the metal connecting plate (231) to fix the toothed belt pressure plate (232) to the metal connecting plate (231).

5. The elevator door operator according to claim 1, characterized in that, The transmission mechanism (20) further includes a tension adjustment component (28), which 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).

6. The elevator door operator according to claim 5, characterized in that, The tension adjustment assembly (28) includes an elastic element (281), a limiting element (282), and a second locking element (283). The elastic element (281) and the limiting element (282) are disposed at one end of the rope (22) and are both installed on the part of the rope (22) that passes through the side guard (2311) so that the two ends of the elastic element (281) abut against the side guard (2311) and the limiting element (282). A connecting rod (222) is connected to at least one end of the rope (22), and the second locking member (283) is connected to the portion of the connecting rod (222) that passes through the side stop (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) that passes through the side stop (2311).

7. The elevator door operator according to claim 6, characterized in that, The metal connecting plate (231) is provided with a tensioning position indication mechanism. The tensioning position indication mechanism is located on one end of the metal connecting plate (231) connected to the elastic member (281) and is used to indicate that the limiting member (282) is in place. The tensioning indication mechanism includes a positioning mark (2314), and the limiting member (282) is aligned with the positioning mark (2314); or, the tensioning indication mechanism includes a retaining edge (2315) disposed on the metal connecting plate (231), and the limiting member (282) is able to abut against the retaining edge (2315).

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