Diversion sheave device, car, counterweight device and elevator

Abstract

The utility model 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] The present application relates to the technical field of elevator equipment, and in particular to a return pulley device, a car, a counterweight device and an elevator. Background Art

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

[0003] The return pulley shaft in the return pulley device is connected to the elevator car or counterweight, providing a suspension for the car or counterweight. However, if an abnormality occurs during elevator operation, the return pulley shaft can become detached from the elevator car or counterweight, causing the car or counterweight to fall due to loss of suspension. This can not only endanger the safety of passengers but also damage the elevator equipment. Utility Model Content

[0004] Based on this, it is necessary to provide a return pulley device, car, counterweight device and elevator to address the problem that the return pulley shaft disengages from the elevator car or counterweight device, thereby causing the car or counterweight device to fall.

[0005] A detent pulley device, comprising a detent pulley body and a bearing, further comprising:

[0006] A deflecting pulley shaft connected to the deflecting pulley body through the bearing;

[0007] The mounting member is provided with a first mounting hole, and the anti-rope pulley shaft is inserted into the first mounting hole;

[0008] a first limiting member, disposed on the mounting member, wherein a portion of the first limiting member is embedded in the deflecting pulley shaft to limit the axial displacement of the deflecting pulley shaft relative to the mounting member, thereby providing axial limiting protection; and

[0009] The second limiting member is provided on the mounting member and abuts against the deflecting pulley shaft to limit the circumferential rotation of the deflecting pulley shaft relative to the mounting member.

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

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

[0012] In one embodiment, the outer circumference of the deflecting pulley shaft is provided with a second limiting plane, and the second limiting member is provided with a fourth limiting plane, and the fourth limiting plane faces the deflecting pulley shaft and abuts 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 a side of the first limiting member facing away from the mounting member.

[0015] In one embodiment, the detent shaft includes a shaft body and a connecting portion, the shaft body is located on the side of the mounting member facing the detent body, the connecting portion is located in the first mounting hole and connected to the shaft body, and the outer peripheral surface of the connecting portion is provided with a first limiting plane; the mounting member has a third limiting plane arranged corresponding to the first mounting hole, and the third limiting plane abuts against the first limiting plane.

[0016] A car comprises a car body and the above-mentioned return pulley device, wherein the mounting member is connected to the car body.

[0017] A counterweight device comprises a counterweight body and the above-mentioned deflection pulley device, wherein the mounting member is connected to the counterweight body.

[0018] An elevator comprises a car, a counterweight device and a traction device, wherein the car and the counterweight device are transmission-connected via the traction device; the car is the car described above and / or the counterweight device is the counterweight device described above.

[0019] The above-mentioned detent wheel device includes a detent wheel body, a bearing, a detent wheel shaft, a mounting member, a first limiting member and a second limiting member. The detent wheel body is connected to the detent wheel shaft through the bearing. The mounting member is provided with a first mounting hole, and the detent wheel shaft is inserted into the first mounting hole. By arranging the first limiting member on the mounting member and partially embedding the first limiting member in the detent wheel shaft, the first limiting member can limit the axial displacement of the detent wheel shaft relative to the mounting member; by arranging the second limiting member on the mounting member and the second limiting member abutting against the detent wheel shaft, the second limiting member can limit the axial displacement of the detent wheel shaft relative to the mounting member. The second limiter can limit the rotation of the return pulley shaft relative to the mounting member; during the operation of the elevator, if the bearing is improperly maintained and fails and gets stuck, the return pulley shaft may rotate under the drive of the return pulley body, resulting in the failure of the second limiter. At this time, the function of the first limiter to limit the axial displacement of the return pulley shaft relative to the mounting member is still effective, and the first limiter can continue to limit the axial displacement of the return pulley shaft relative to the mounting member, preventing the return pulley shaft from escaping from the mounting member, reducing the risk of the car or counterweight device falling, and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of a reverse pulley device according to an embodiment of the present application.

[0021] Figure 2 Schematic diagram of the structure of the return pulley shaft in the return pulley device according to one embodiment of the present application.

[0022] Figure 3 Schematic diagram of the assembly of the limiting component and the return pulley shaft in the return pulley device according to one embodiment of the present application.

[0023] Figure 4 This is a partial structural diagram of a mounting member in a reverse pulley device according to another embodiment of the present application.

[0024] Figure 5 This is a schematic diagram of the partial structure of the return pulley shaft in the return pulley device of another embodiment of the present application.

[0025] Figure markings: 1. deflection pulley assembly; 11. deflection pulley body; 12. deflection 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 part; 211. first mounting hole; 2112. third limiting plane; 213. second mounting hole; 3. first limiting part; 31. fourth mounting hole; 4. second limiting part; 41. fourth limiting plane. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0028] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0029] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integration; mechanical connections, electrical connections; direct connections, indirect connections through an intermediary, and internal connections between two components or interactions between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, 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 embodiment.

[0032] As mentioned in the background, elevators with a suspension ratio of at least two are typically equipped with a return pulley. This device typically includes a return pulley body, bearings, a return pulley shaft, and a mounting plate. The mounting plate is connected to the car or counterweight. The return pulley body is connected to the return pulley shaft via a bearing, and the return pulley shaft is mounted on the mounting plate, providing a suspension for the car or counterweight. Currently, to prevent the return pulley shaft from dislodging from the elevator car or counterweight, a rectangular stopper is typically provided in the return pulley shaft. The stopper is a plate that fits within the stopper and is bolted to the mounting plate. This plate simultaneously limits both the rotation and axial displacement of the return pulley shaft.

[0033] However, when the bearings of the return pulley device are improperly maintained and fail to become stuck, the elevator cannot recognize the bearings being stuck and continues to drive the car or counterweight. The traction rope generates a large torque on the return pulley body, and the return pulley shaft rotates under the drive of the return pulley body, thereby generating a large shear force on the bolts at the limit plate. When the shear force exceeds the load-bearing capacity of the bolts, the bolts at the limit plate are sheared, causing the limit plate to lose its function of limiting the circumferential rotation and axial displacement of the return pulley shaft. The failure and sticking of the bearing causes one side of the return pulley body to lose the support of the bearing and tilt, causing the traction rope to escape from the rope groove of the return pulley body and be squeezed between the return pulley body and the mounting plate. The large squeezing force pushes the mounting plate open, causing the return pulley shaft to escape from the mounting plate, resulting in a safety accident in which the car or counterweight device falls.

[0034] See also Figure 1 , Figure 1The structure diagram of the anti-ropes device of one embodiment of the present application is shown. To solve the above problems, one embodiment of the present application provides an anti-ropes device, including an anti-ropes assembly 1, an installation assembly 2 and a limit assembly. The anti-ropes assembly 1 includes an anti-ropes body 11, a bearing (not shown) and an anti-ropes shaft 12. The bearing is sleeved on the outside of the anti-ropes shaft 12. The anti-ropes body 11 is connected to the anti-ropes shaft 12 through the bearing; the installation assembly 2 includes at least one mounting member 21, and the mounting member 21 is provided with a first mounting hole 21. 1. The return 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 provided on the mounting member 21, and a portion of the first limiting member 3 is embedded in the return pulley shaft 12, which is used to limit the axial displacement of the return pulley shaft 12 relative to the mounting member 21 and provide axial limiting protection; the second limiting member 4 is provided on the mounting member 21, and the second limiting member 4 abuts against the return pulley shaft 12, which is used to limit the circumferential rotation of the return pulley shaft 12 relative to the mounting member 21.

[0035] It is understandable that during the operation of the elevator, improper maintenance of the bearings may cause the bearings to fail and become stuck. When the return pulley shaft 12 rotates driven by the return pulley body 11, even if the second limit member 4 fails to limit the rotation of the return pulley shaft 12 relative to the mounting member 21, since the first limit member 3 will not be affected by the shear force generated by the rotation of the return pulley shaft 12, the function of the first limit member 3 to limit the axial displacement of the return pulley 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 return pulley shaft 12 relative to the mounting member 21, prevent the return pulley shaft 12 from escaping from the mounting member 21, avoid the fall of the car or counterweight device, and thus eliminate safety hazards.

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

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

[0038] In some embodiments, the first position-limiting member 3 has an arcuate groove on a side facing the mounting portion 123. The notch of the arcuate groove faces the outer circumference of the mounting portion 123, and the arcuate groove has the same shape as the annular groove 1231. At least a portion of the first position-limiting member 3 abuts against the inner wall of the annular groove 1231. When the return pulley shaft 12 attempts to move axially, the first position-limiting member 3 generates resistance against the inner wall of the annular groove 1231, thereby preventing the return pulley shaft 12 from moving axially and limiting the axial displacement of the return pulley shaft 12 relative to the mounting member 21.

[0039] In some embodiments, the anti-ropes device includes a plurality of first limiting members 3, which are sequentially spaced along the circumference of the mounting portion 123 and are all engaged with the annular groove 1231. For example, please refer to Figure 3 In this embodiment, an annular groove 1231 is provided on the outer circumference of the mounting portion 123 of the detent pulley shaft 12, and the detent pulley device includes two first limiting members 3. The first limiting member 3 is a plate-shaped structure. The first limiting member 3 is provided with an arc-shaped groove toward the mounting portion 123. The notch of the arc-shaped groove faces the outer circumference of the mounting portion 123 and the arc-shaped groove is a semicircular groove. The two first limiting members 3 are relatively arranged at the top and bottom of the mounting portion 123, and parts of the first limiting members 3 are embedded in the annular groove 1231. In other embodiments, the detent pulley device can also include three first limiting members 3 or four first limiting members 3. The first limiting members 3 are all engaged with the annular groove 1231, so this is not limited to this. Even if one of the first limiting members 3 fails, the other first limiting members 3 can still continue to limit the axial displacement of the detent pulley shaft 12 relative to the mounting member 21, thereby enhancing the fault tolerance of the detent pulley device and improving the stability of the detent pulley device.

[0040] Please also refer to Figure 4In some embodiments, the mounting member 21 is provided with a plurality of second mounting holes 213, and the first limiting member 3 is provided with at least one third mounting hole (not shown); after the first limiting member 3 is clamped in the annular groove 1231 of the return pulley shaft 12, a fastener is 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. The assembly is convenient and quick, and it also helps to improve the connection strength between the first limiting member 3 and the mounting member 21.

[0041] In some embodiments, a second limiting plane 1232 is provided on the outer circumference of the mounting portion 123 of the return pulley shaft 12; the second limiting member 4 is provided with a fourth limiting plane 41, which faces the outer circumference of the mounting portion 123. The fourth limiting plane 41 abuts against the second limiting plane 1232 to limit the rotation of the return pulley shaft 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 return pulley shaft 12 can effectively contact the fourth limiting plane 41, ensuring the effectiveness and reliability of the second limiting member 4 in limiting the rotation of the return pulley shaft 12.

[0042] In some embodiments, the second position-limiting member 4 is disposed on a side of the first position-limiting member 3 facing away from the mounting member 21 and is connected to the mounting member 21 via the first position-limiting member 3. In some embodiments, the first position-limiting member 3 defines at least one fourth mounting hole 31, and the second position-limiting member 4 defines at least one fifth mounting hole (not shown). Fasteners are sequentially passed through the fifth mounting hole and the fourth mounting hole 31 to secure the second position-limiting member 4 to the first position-limiting member 3. This facilitates quick and easy assembly, while also helping to improve the connection strength between the second position-limiting member 4 and the first position-limiting member 3 and enhance the overall structural stability of the position-limiting assembly.

[0043] In this embodiment, the second limiting member 4 is a rectangular plate-like structure, and the rectangular plate-like structure has a fourth limiting plane 41 on the outer peripheral surface facing the mounting portion 123; in other embodiments, the second limiting member 4 can also be other structures having a fourth limiting plane 41 and capable of abutting against the second limiting plane 1232 on the outer peripheral surface of the mounting portion 123, such as a bolt, so it is not limited to this.

[0044] Please also refer to Figure 5In some embodiments, a first limiting plane 1221 is provided on the outer peripheral surface of the connecting portion 122 of the de-ropey shaft 12; the mounting member 21 has a third limiting plane 2112, and the third limiting plane 2112 is provided corresponding to the first mounting hole 211, that is, the mounting member 21 includes a plurality of sub-plates, and the plurality of sub-plates are surrounded to form the first mounting hole 211, and the surface of the sub-plate facing the de-ropey shaft 12 is provided with a third limiting plane 2112, and the third limiting plane 2112 abuts against the first limiting plane 1221 of the de-ropey shaft 12 to limit the rotation of the de-ropey shaft 12 relative to the mounting member 21.

[0045] The detent pulley device provided in the present application includes a limiting assembly, which includes at least one first limiting member 3 and at least one second limiting member 4. The first limiting member 3 is arranged on the mounting member 21 and is partially embedded in the detent pulley shaft 12 to limit the axial displacement of the detent pulley shaft 12 relative to the mounting member 21; the second limiting member 4 is arranged on the mounting member 21 and the second limiting member 4 is arranged to abut against the detent pulley shaft 12 to limit the rotation of the detent pulley shaft 12 relative to the mounting member 21. Compared with the existing limit plates, when the bearings fail and get stuck due to improper maintenance, the return pulley shaft 12 rotates under the drive of the return pulley body 11, the limit assembly provided by the present application will not lose the limiting effect on the rotation and axial displacement of the return pulley shaft 12 relative to the mounting member 21 at the same time. Even if the second limit member 4 loses the limiting effect on the rotation of the return pulley shaft 12 relative to the mounting member 21, since the first limit member 3 will not be affected by the shear force generated by the rotation of the return pulley shaft 12, the function of the first limit member 3 to limit the axial displacement of the return pulley shaft 12 relative to the mounting member 21 is still effective, and the first limit member 3 can continue to limit the axial displacement of the return pulley shaft 12 relative to the mounting member 21, prevent the return pulley shaft 12 from escaping from the mounting member 21, and avoid the falling of the car or counterweight device, thereby eliminating safety hazards.

[0046] In addition, the existing limit plate loses its function of limiting the rotation and axial displacement of the return pulley shaft 12 at the same time, so there is no safety window period, and the safety hazard is great. However, after the second limiter 4 loses its function of limiting the rotation of the return pulley shaft 12 relative to the mounting member 21, the first limiter 3 can continue to limit the axial displacement of the return pulley shaft 12 relative to the mounting member 21, so the elevator can continue to run for a period of time. During this safety window period, when the elevator continues to run, as the return pulley shaft 12 rotates, the return pulley shaft 12 will rub against the mounting member 21 and the first limiter 3, thereby generating high-frequency sharp noise, so that the elevator maintenance personnel can promptly notice the safety problem of the elevator through the abnormal noise, or the passengers can promptly report the problem of the elevator abnormal noise to the elevator maintenance personnel, so that the safety problem of the elevator can be discovered in time, and thus timely repaired, eliminating the safety hazard. At the same time, the high-frequency sharp noise emitted by the deflector pulley device provided in the present application is generated by the friction between the deflector pulley shaft 12 and the mounting member 21 and the first limit member 3, and does not require electric drive. Therefore, even if it is set on the side of the counterweight device without power supply, it can achieve noise alarm feedback. It has a simple structure, low cost, and is conducive to energy saving.

[0047] The present application also provides an elevator car, comprising a car body and the deflector pulley device 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 elevator car provided by the present application has excellent safety performance. In the event of a bearing seizure failure, the deflector pulley shaft 12 will not disengage from the mounting member 21, preventing the car body from falling.

[0048] The present application also provides a counterweight device, comprising a counterweight body and the aforementioned deflector pulley device, 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 the present application provides excellent safety performance. In the event of a bearing seizure failure, the deflector pulley shaft 12 will not disengage from the mounting member 21, preventing the counterweight body from falling.

[0049] The present application also provides an elevator, comprising a car, a counterweight device, and a traction device, wherein the car and the counterweight device are connected by a transmission through the traction device; the car is the car described above and / or the counterweight device is the counterweight device described above. The elevator provided by the present application has good safety performance. When a bearing becomes stuck and fails, the return pulley shaft 12 will not disengage from the mounting member 21, thereby preventing the car and the counterweight device from falling. At the same time, it can also emit a high-frequency, sharp abnormal sound, so that elevator faults can be discovered in a timely manner, the elevator can be repaired in a timely manner, safety hazards can be eliminated, and safe operation can be maintained.

[0050] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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 above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A deflecting pulley device, comprising a deflecting pulley body and a bearing, characterized in that: The anti-ropes device further comprises: A deflecting pulley shaft connected to the deflecting pulley body through the bearing; The mounting member is provided with a first mounting hole, and the anti-rope pulley shaft is inserted into the first mounting hole; a first limiting member, disposed on the mounting member, wherein a portion of the first limiting member is embedded in the deflecting pulley shaft to limit the axial displacement of the deflecting pulley shaft relative to the mounting member, thereby providing axial limiting protection; and The second limiting member is provided on the mounting member and abuts against the deflecting pulley shaft to limit the circumferential rotation of the deflecting pulley shaft relative to the mounting member.

2. The anti-ropes device according to claim 1, characterized in that: The detent shaft includes a shaft main body, a mounting portion and a connecting portion, the shaft main body is located on the side of the mounting piece facing the detent body, the mounting portion is located on the side of the mounting piece away from the detent body, and is connected to the shaft main body through the connecting portion, an annular groove is provided on the outer peripheral surface of the mounting portion; part of the first limiting member is embedded in the annular groove.

3. The anti-ropes device according to claim 2, characterized in that: The deflecting pulley device includes a plurality of first limiting members, which are sequentially spaced apart along the circumference of the mounting portion and are all engaged with the annular groove.

4. The anti-ropes device according to claim 1, characterized in that: A second limiting plane is provided on the outer circumference of the deflecting pulley shaft, and a fourth limiting plane is provided on the second limiting member. The fourth limiting plane faces the deflecting pulley shaft and abuts against the second limiting plane.

5. The anti-ropes device according to claim 4, characterized in that: 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.

6. The anti-ropes device according to claim 4, characterized in that: The second limiting member is arranged on a side of the first limiting member facing away from the mounting member.

7. The anti-ropes device according to claim 1, characterized in that: The detent shaft includes a shaft main body and a connecting part, the shaft main body is located on the side of the mounting piece facing the detent body, the connecting part is located in the first mounting hole and connected to the shaft main body, and the outer peripheral surface of the connecting part is provided with a first limiting plane; the mounting piece has a third limiting plane arranged corresponding to the first mounting hole, and the third limiting plane abuts against the first limiting plane.

8. A car, characterized in that: The car includes a car body and a deflecting pulley device according to any one of claims 1 to 7, and 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 deflecting pulley device according to any one of claims 1 to 7, and the mounting member is connected to the counterweight body.

10. An elevator, characterized in that: The elevator includes a car, a counterweight device and a traction device, and the car and the counterweight device are transmission-connected via the traction device; the car is the car according to claim 8 and / or the counterweight device is the counterweight device according to claim 9.

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