Diversion sheave device, car, counterweight device and elevator

Abstract

The invention relates to a diversion sheave device which comprises a diversion sheave body and a bearing and further comprises a diversion sheave shaft connected with the diversion sheave body through the bearing. A first mounting hole is formed in the mounting piece, and the diversion sheave shaft is inserted into the first mounting hole; the first limiting piece is arranged on the mounting piece, and a part of the first limiting piece is embedded in the diversion sheave shaft so as to limit the axial displacement of the diversion sheave shaft relative to the mounting piece; and the second limiting piece is arranged on the mounting piece and is propped against the diversion sheave shaft to limit the rotation of the diversion sheave shaft relative to the mounting piece. According to the diversion sheave device, the axial and circumferential double-safety secondary protection design is adopted, when the bearing loses efficacy and is stuck or other abnormal conditions occur, the diversion sheave shaft is driven by the diversion sheave body to rotate, and limiting of the second limiting piece loses efficacy, the first limiting piece can continue to limit axial displacement of the diversion sheave shaft relative to the installation piece, and therefore the diversion sheave shaft is prevented from being damaged. And the diversion sheave shaft is prevented from being separated from the mounting piece, so that the risk of falling of the lift car or the counterweight device is reduced.

Description

Technical Field

[0001] This application relates to the field of elevator equipment technology, and in particular to anti-cord sheave devices, cars, counterweight devices, and elevators. Background Technology

[0002] Elevators with a suspension ratio of not less than two are usually equipped with a counterweight pulley system to effectively balance the load between the car and the counterweight. In addition, the counterweight pulley system can not only reduce the wear of the wire rope during operation, but also improve the operating efficiency of the elevator and ensure the safe and efficient operation of the elevator.

[0003] The deflector shaft in the deflector device is connected to the elevator car or counterweight, forming a suspension for the car or counterweight. However, when an abnormality occurs during elevator operation, the deflector shaft may detach from the elevator car or counterweight, causing the car or counterweight to fall due to loss of suspension. This not only endangers the personal safety of passengers but also damages the elevator equipment. Summary of the Invention

[0004] Therefore, it is necessary to provide a reverse rope device, a car, a counterweight device, and an elevator to address the problem of the reverse rope sheave shaft detaching from the elevator car or counterweight device, which could lead to the car or counterweight device falling.

[0005] A reversing rope pulley device includes a reversing rope pulley body and a bearing, the reversing rope pulley device further includes:

[0006] The anti-rope pulley shaft is connected to the anti-rope pulley body via the bearing;

[0007] The mounting component has a first mounting hole, and the anti-rope pulley axle is inserted into the first mounting hole;

[0008] A first limiting member is disposed on the mounting member, and a portion of the first limiting member is embedded in the anti-cord pulley axle to limit the axial displacement of the anti-cord pulley axle relative to the mounting member, providing axial limiting protection; and,

[0009] A second limiting member is disposed on the mounting member and abuts against the anti-cord pulley shaft to restrict the circumferential rotation of the anti-cord pulley shaft relative to the mounting member.

[0010] In one embodiment, the anti-cord pulley shaft includes a shaft body, a mounting part, and a connecting part. The shaft body is located on the side of the mounting member facing the anti-cord pulley body, and the mounting part is located on the side of the mounting member away from the anti-cord pulley body and is connected to the shaft body through the connecting part. An annular groove is formed on the outer peripheral surface of the mounting part; a portion of the first limiting member is embedded in the annular groove.

[0011] In one embodiment, the anti-rope wheel device includes a plurality of first limiting members, which are arranged sequentially at intervals along the circumference of the mounting portion and are all engaged with the annular groove.

[0012] In one embodiment, the outer peripheral surface of the anti-cord pulley shaft is provided with a second limiting plane, and the second limiting member is provided with a fourth limiting plane, the fourth limiting plane facing the anti-cord pulley shaft and abutting against the second limiting plane.

[0013] In one embodiment, the length of the fourth limiting plane in the extending direction is greater than or equal to the length of the second limiting plane in the extending direction.

[0014] In one embodiment, the second limiting member is disposed on the side of the first limiting member opposite to the mounting member.

[0015] In one embodiment, the anti-cord pulley axle includes a shaft body and a connecting part. The shaft body is located on the side of the mounting member facing the anti-cord pulley body. The connecting part is located in the first mounting hole and connected to the shaft body. The outer peripheral surface of the connecting part is provided with a first limiting plane. The mounting member has a third limiting plane corresponding to the first mounting hole, and the third limiting plane abuts against the first limiting plane.

[0016] A car includes a car body and a reversing sheave device as described above, wherein the mounting member is connected to the car body.

[0017] A counterweight device, comprising a counterweight body and a counter-rope pulley device as described above, wherein the mounting member is connected to the counterweight body.

[0018] An elevator includes a car, a counterweight, and a traction device, wherein the car and the counterweight are connected by a drive mechanism via the traction device; the car is a car as described above and / or the counterweight is a counterweight as described above.

[0019] The aforementioned anti-cord pulley device includes an anti-cord pulley body, a bearing, an anti-cord pulley shaft, a mounting component, a first limiting component, and a second limiting component. The anti-cord pulley body is connected to the anti-cord pulley shaft via the bearing. The mounting component has a first mounting hole, into which the anti-cord pulley shaft is inserted. By placing the first limiting component on the mounting component and partially embedding it in the anti-cord pulley shaft, the first limiting component can restrict the axial displacement of the anti-cord pulley shaft relative to the mounting component. By placing the second limiting component on the mounting component and abutting against the anti-cord pulley shaft, the first limiting component can restrict the axial displacement of the anti-cord pulley shaft relative to the mounting component. The second limiting component can restrict the rotation of the deflector shaft relative to the mounting component. During elevator operation, if the bearing fails and jams due to improper bearing maintenance, the deflector shaft may rotate under the drive of the deflector body, causing the second limiting component to fail. In this case, the first limiting component's function of limiting the axial displacement of the deflector shaft relative to the mounting component remains effective. The first limiting component can continue to limit the axial displacement of the deflector shaft relative to the mounting component, preventing the deflector shaft from detaching from the mounting component, reducing the risk of the car or counterweight falling, and minimizing safety hazards. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a reverse rope pulley device according to an embodiment of this application.

[0021] Figure 2 This is a schematic diagram of the structure of the anti-rope wheel shaft in an embodiment of the anti-rope wheel device of this application.

[0022] Figure 3 This is a schematic diagram of the assembly of the limiting component and the reverse rope wheel shaft in a reverse rope wheel device according to an embodiment of this application.

[0023] Figure 4 This is a partial structural diagram of the mounting component in the anti-rope pulley device according to another embodiment of this application.

[0024] Figure 5 This is a partial structural diagram of the anti-rope wheel shaft in another embodiment of the anti-rope wheel device of this application.

[0025] Reference numerals: 1. Reverse rope pulley assembly; 11. Reverse rope pulley body; 12. Reverse rope pulley shaft; 121. Shaft body; 122. Connecting part; 1221. First limiting plane; 123. Mounting part; 1231. Annular groove; 1232. Second limiting plane; 2. Mounting assembly; 21. Mounting component; 211. First mounting hole; 2112. Third limiting plane; 213. Second mounting hole; 3. First limiting component; 31. Fourth mounting hole; 4. Second limiting component; 41. Fourth limiting plane. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] As mentioned in the background section, elevators with a suspension ratio of at least two are typically equipped with a deflector system. A typical deflector system includes the deflector body, bearings, a deflector shaft, and a mounting plate. The mounting plate connects to the car or counterweight. The deflector body is connected to the deflector shaft via bearings, and the deflector shaft is mounted on the mounting plate, thus suspending the car or counterweight. Currently, to prevent the deflector shaft from detaching from the elevator car or counterweight, a limiting groove is usually created on the deflector shaft. This limiting groove is rectangular, and a limiting plate is inserted into it and connected to the mounting plate via bolts. The limiting plate simultaneously restricts the rotation and axial displacement of the deflector shaft.

[0033] However, when the bearings of the deflector device are improperly maintained and fail and jam, the elevator cannot recognize the jamming and continues to drive the car or counterweight. The traction rope generates a large torque on the deflector body, causing the deflector shaft to rotate. This generates a significant shearing force on the bolts at the limit plate. When the shearing force exceeds the bolt's bearing capacity, the bolts at the limit plate are sheared off, causing the limit plate to simultaneously lose its function of restricting the circumferential rotation and axial displacement of the deflector shaft. The bearing failure and jamming cause one side of the deflector body to lose bearing support and tilt. The traction rope comes out of the rope groove of the deflector body and gets squeezed between the deflector body and the mounting plate. The immense squeezing force forces the mounting plate open, causing the deflector shaft to detach from the mounting plate, resulting in a safety accident where the car or counterweight falls.

[0034] Please see Figure 1 , Figure 1A schematic diagram of a reversing pulley device according to an embodiment of this application is shown. To solve the above problems, an embodiment of this application provides a reversing pulley device, including a reversing pulley assembly 1, a mounting assembly 2, and a limiting assembly. The reversing pulley assembly 1 includes a reversing pulley body 11, a bearing (not shown), and a reversing pulley shaft 12. The bearing is sleeved on the outside of the reversing pulley shaft 12, and the reversing pulley body 11 is connected to the reversing pulley shaft 12 through the bearing. The mounting assembly 2 includes at least one mounting member 21, and the mounting member 21 has a first mounting hole 21. 1. The anti-cord pulley shaft 12 is inserted into the first mounting hole 211; the limiting assembly includes at least one first limiting member 3 and at least one second limiting member 4. The first limiting member 3 is disposed on the mounting member 21, and a portion of the first limiting member 3 is embedded in the anti-cord pulley shaft 12 to limit the axial displacement of the anti-cord pulley shaft 12 relative to the mounting member 21, thereby providing axial limiting protection; the second limiting member 4 is disposed on the mounting member 21, and the second limiting member 4 abuts against the anti-cord pulley shaft 12 to limit the circumferential rotation of the anti-cord pulley shaft 12 relative to the mounting member 21.

[0035] Understandably, during elevator operation, improper bearing maintenance can lead to bearing failure and jamming. When the anti-cord sheave shaft 12 rotates under the drive of the anti-cord sheave body 11, even if the second limiting member 4 fails to restrict the rotation of the anti-cord sheave shaft 12 relative to the mounting member 21, the first limiting member 3 will not be subjected to the shearing force generated by the rotation of the anti-cord sheave shaft 12. The first limiting member 3 can still effectively restrict the axial displacement of the anti-cord sheave shaft 12 relative to the mounting member 21, preventing the anti-cord sheave shaft 12 from detaching from the mounting member 21, avoiding the fall of the car or counterweight, and thus eliminating safety hazards.

[0036] In some embodiments, the mounting assembly 2 includes two opposite and parallel mounting members 21, and the first mounting holes 211 of the two mounting members 21 are coaxially arranged; the anti-cord pulley body 11 is disposed in the accommodating space formed by the two mounting members 21, and the two ends of the anti-cord pulley shaft 12 are respectively inserted into the two first mounting holes 211.

[0037] Please refer to the following: Figure 2 , Figure 2A schematic diagram of the structure of the anti-cord pulley shaft 12 in an embodiment of the present application is shown. In some embodiments, the anti-cord pulley shaft 12 includes a shaft body 121, a connecting part 122, and a mounting part 123. The shaft body 121 is located on the side of the mounting member 21 facing the anti-cord pulley body 11. The connecting part 122 is located in the first mounting hole 211 and connected to the shaft body 121. The mounting part 123 is located on the side of the mounting member 21 away from the anti-cord pulley body 11 and is connected to the shaft body 121 through the connecting part 122. An annular groove 1231 is formed on the outer peripheral surface of the mounting part 123. The annular groove 1231 is arranged around the circumference of the mounting part 123 to form a continuous annular groove structure. A portion of the first limiting member 3 is embedded in the annular groove 1231.

[0038] In some embodiments, the first limiting member 3 has an arc-shaped groove on the side facing the mounting portion 123. The opening of the arc-shaped groove faces the outer peripheral surface of the mounting portion 123, and the arc-shaped groove has the same shape as the annular groove 1231. At least a portion of the first limiting member 3 abuts against the inner wall surface of the annular groove 1231. When the anti-cord pulley shaft 12 attempts to move axially, the first limiting member 3 will generate resistance against the inner wall of the annular groove 1231, thereby preventing the anti-cord pulley shaft 12 from moving axially and thus limiting the axial displacement of the anti-cord pulley shaft 12 relative to the mounting member 21.

[0039] In some embodiments, the anti-cord pulley device includes a plurality of first limiting members 3, which are arranged sequentially at intervals along the circumference of the mounting portion 123 and are all engaged with the annular groove 1231. For example, please refer to [reference needed]. Figure 3 In this embodiment, an annular groove 1231 is formed on the outer peripheral surface of the mounting portion 123 of the anti-cord pulley shaft 12. The anti-cord pulley device includes two first limiting members 3. The first limiting members 3 are plate-shaped structures, and each first limiting member 3 has an arc-shaped groove facing the mounting portion 123. The opening of the arc-shaped groove faces the outer peripheral surface of the mounting portion 123, and the arc-shaped groove is a semi-circular groove. The two first limiting members 3 are disposed opposite to each other at the top and bottom of the mounting portion 123, and a portion of the first limiting members 3 is embedded in the annular groove 1231. In other embodiments, the anti-cord pulley device may also include three or four first limiting members 3. All first limiting members 3 are engaged with the annular groove 1231, so this is not a limitation. Even if one of the first limiting members 3 fails, the other first limiting members 3 can still continue to restrict the axial displacement of the anti-cord pulley shaft 12 relative to the mounting portion 21, enhancing the fault tolerance of the anti-cord pulley device and improving its stability.

[0040] Please refer to the following: Figure 4In some embodiments, the mounting member 21 has multiple second mounting holes 213, and the first limiting member 3 has at least one third mounting hole (not shown). After the first limiting member 3 is engaged in the annular groove 1231 of the anti-rope wheel shaft 12, fasteners are then used to pass through the third mounting hole and the second mounting hole 213 in sequence to fix the first limiting member 3 on the mounting member 21. This makes assembly convenient and quick, and also helps to improve the connection strength between the first limiting member 3 and the mounting member 21.

[0041] In some embodiments, the outer peripheral surface of the mounting portion 123 of the anti-cord pulley 12 is provided with a second limiting plane 1232; the second limiting member 4 is provided with a fourth limiting plane 41, the fourth limiting plane 41 facing the outer peripheral surface of the mounting portion 123, and the fourth limiting plane 41 abutting against the second limiting plane 1232 to restrict the rotation of the anti-cord pulley 12 relative to the mounting member 21. In some embodiments, the length of the fourth limiting plane 41 in the extending direction is greater than or equal to the length of the second limiting plane 1232 in the extending direction, so that the second limiting plane 1232 of the anti-cord pulley 12 can effectively contact the fourth limiting plane 41, ensuring the effectiveness and reliability of the second limiting member 4 in restricting the rotation of the anti-cord pulley 12.

[0042] In some embodiments, the second limiting member 4 is disposed on the side of the first limiting member 3 facing away from the mounting member 21, and is connected to the mounting member 21 through the first limiting member 3. In some embodiments, the first limiting member 3 has at least one fourth mounting hole 31, and the second limiting member 4 has at least one fifth mounting hole (not shown). Fasteners are used to pass through the fifth mounting hole and the fourth mounting hole 31 in sequence to fix the second limiting member 4 onto the first limiting member 3. This makes assembly convenient and quick, and also helps to improve the connection strength between the second limiting member 4 and the first limiting member 3, thereby improving the overall structural stability of the limiting assembly.

[0043] In this embodiment, the second limiting member 4 is a rectangular plate structure, and the rectangular plate structure has a fourth limiting plane 41 on the outer peripheral surface facing the mounting part 123. In other embodiments, the second limiting member 4 may also be other structures with a fourth limiting plane 41 and capable of abutting against the second limiting plane 1232 on the outer peripheral surface of the mounting part 123, such as a bolt, and is not limited thereto.

[0044] Please refer to the following: Figure 5In some embodiments, the outer peripheral surface of the connecting portion 122 of the anti-cord pulley shaft 12 is provided with a first limiting plane 1221; the mounting member 21 has a third limiting plane 2112, which is provided corresponding to the first mounting hole 211. That is, the mounting member 21 includes a plurality of sub-plates, which surround to form the first mounting hole 211. The surface of the sub-plate facing the anti-cord pulley shaft 12 is provided with the third limiting plane 2112. The third limiting plane 2112 abuts against the first limiting plane 1221 of the anti-cord pulley shaft 12 to restrict the rotation of the anti-cord pulley shaft 12 relative to the mounting member 21.

[0045] The anti-cord pulley device provided in this application includes a limiting component. The limiting component includes at least one first limiting member 3 and at least one second limiting member 4. The first limiting member 3 is disposed on the mounting member 21 and partially embedded in the anti-cord pulley shaft 12 to limit the axial displacement of the anti-cord pulley shaft 12 relative to the mounting member 21. The second limiting member 4 is disposed on the mounting member 21 and is arranged to abut against the anti-cord pulley shaft 12 to limit the rotation of the anti-cord pulley shaft 12 relative to the mounting member 21. Compared with existing limit plates, when improper bearing maintenance leads to bearing failure and jamming, and the anti-cord shear shaft 12 rotates under the drive of the anti-cord shear body 11, the limit component provided in this application will not simultaneously lose its function of limiting the rotation and axial displacement of the anti-cord shear shaft 12 relative to the mounting member 21. Even if the second limit member 4 loses its function of limiting the rotation of the anti-cord shear shaft 12 relative to the mounting member 21, since the first limit member 3 is not subjected to the shear force generated by the rotation of the anti-cord shear shaft 12, the function of the first limit member 3 in limiting the axial displacement of the anti-cord shear shaft 12 relative to the mounting member 21 is still effective. The first limit member 3 can continue to limit the axial displacement of the anti-cord shear shaft 12 relative to the mounting member 21, prevent the anti-cord shear shaft 12 from falling off the mounting member 21, avoid the car or counterweight device from falling, and thus eliminate safety hazards.

[0046] In addition, existing limit plates, because they simultaneously lose their function of restricting the rotation and axial displacement of the anti-cord sheave shaft 12, lack a safety window period, resulting in significant safety hazards. However, in the anti-cord sheave device of this application, even after the second limit member 4 loses its function of restricting the rotation of the anti-cord sheave shaft 12 relative to the mounting member 21, the first limit member 3 can continue to restrict the axial displacement of the anti-cord sheave shaft 12 relative to the mounting member 21. Therefore, the elevator can continue to operate for a period of time. During this safety window period, as the elevator continues to operate, the anti-cord sheave shaft 12 will rub against the mounting member 21 and the first limit member 3, generating high-frequency, sharp noise. This allows elevator maintenance personnel to promptly notice any safety issues through the abnormal noise, or allows passengers to promptly report any abnormal noise to elevator maintenance personnel. This ensures that elevator safety problems are detected in a timely manner, leading to timely repairs and the elimination of safety hazards. Meanwhile, the high-frequency sharp noise emitted by the anti-cord wheel device provided in this application is generated by the friction between the anti-cord wheel shaft 12 and the mounting part 21 and the first limiting part 3, which does not require electric drive. Therefore, even if it is set on the side of the counterweight device without power, it can realize the alarm feedback of noise emission. The structure is simple, the cost is low, and it is conducive to saving energy.

[0047] This application also provides a car, which includes a car body and a deflector device as described above, with a mounting member 21 connected to the car body. In some embodiments, the mounting member 21 and the car body are integrally formed. The car provided by this application has good safety performance; when a bearing jamming failure occurs, the deflector shaft 12 will not detach from the mounting member 21, preventing the car body from falling.

[0048] This application also provides a counterweight device, which includes a counterweight body and a counter-rope pulley device as described above, with a mounting member 21 connected to the counterweight body. In some embodiments, the mounting member 21 and the counterweight body are integrally formed. The counterweight device provided by this application has good safety performance. When a bearing jamming failure occurs, the counter-rope pulley shaft 12 will not detach from the mounting member 21, preventing the counterweight body from falling.

[0049] This application also provides an elevator, which includes a car, a counterweight, and a traction device. The car and the counterweight are connected by a traction device. The car is as described above and / or the counterweight is as described above. The elevator provided by this application has good safety performance. When a bearing jams or fails, the anti-cord sheave shaft 12 will not detach from the mounting part 21, preventing the car and counterweight from falling. At the same time, it emits a high-frequency, sharp abnormal noise, allowing the elevator malfunction to be detected in time, enabling timely repair, eliminating safety hazards, and maintaining safe operation.

[0050] 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.

[0051] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A reversing rope pulley device, comprising a reversing rope pulley body and a bearing, characterized in that, The anti-rope pulley device also includes: The anti-rope pulley shaft is connected to the anti-rope pulley body via the bearing; The mounting component has a first mounting hole, and the anti-rope pulley axle is inserted into the first mounting hole; A first limiting member is disposed on the mounting member, and a portion of the first limiting member is embedded in the anti-cord pulley axle to limit the axial displacement of the anti-cord pulley axle relative to the mounting member, providing axial limiting protection; and, A second limiting member is disposed on the mounting member and abuts against the anti-cord pulley shaft to restrict the circumferential rotation of the anti-cord pulley shaft relative to the mounting member.

2. The anti-rope pulley device according to claim 1, characterized in that, The anti-cord pulley shaft includes a shaft body, a mounting part, and a connecting part. The shaft body is located on the side of the mounting member facing the anti-cord pulley body. The mounting part is located on the side of the mounting member away from the anti-cord pulley body and is connected to the shaft body through the connecting part. An annular groove is formed on the outer peripheral surface of the mounting part. A portion of the first limiting member is embedded in the annular groove.

3. The anti-rope pulley device according to claim 2, characterized in that, The anti-rope wheel device includes a plurality of first limiting members, which are arranged sequentially at intervals along the circumference of the mounting portion and are all engaged with the annular groove.

4. The anti-rope pulley device according to claim 1, characterized in that, The outer circumferential surface of the anti-cord wheel shaft is provided with a second limiting plane, and the second limiting member is provided with a fourth limiting plane. The fourth limiting plane faces the anti-cord wheel shaft and abuts against the second limiting plane.

5. The anti-rope pulley device according to claim 4, characterized in that, The length of the fourth limiting plane in the extension direction is greater than or equal to the length of the second limiting plane in the extension direction.

6. The anti-rope pulley device according to claim 4, characterized in that, The second limiting member is disposed on the side of the first limiting member that is opposite to the mounting member.

7. The anti-rope pulley device according to claim 1, characterized in that, The anti-cord pulley axle includes a shaft body and a connecting part. The shaft body is located on the side of the mounting member facing the anti-cord pulley body. The connecting part is located in the first mounting hole and connected to the shaft body. The outer peripheral surface of the connecting part is provided with a first limiting plane. The mounting member has a third limiting plane corresponding to the first mounting hole. The third limiting plane abuts against the first limiting plane.

8. A car, characterized in that, The car includes a car body and a reverse rope pulley device as described in any one of claims 1-7, wherein the mounting member is connected to the car body.

9. A counterweight device, characterized in that, The counterweight device includes a counterweight body and a reverse rope pulley device as described in any one of claims 1-7, wherein the mounting member is connected to the counterweight body.

10. An elevator, characterized in that, The elevator includes a car, a counterweight, and a traction device, wherein the car and the counterweight are connected by a drive mechanism via the traction device; the car is the car as described in claim 8 and / or the counterweight is the counterweight as described in claim 9.

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