Self-adapting pendant pulley

Abstract

The application provides a self-adaptive hanging pulley, which comprises a hanging frame part and a base part, the hanging frame part is provided with a roller, and the base part is connected to the hanging frame part and can swing in the wheel shaft axial direction of the roller relative to the hanging frame part. Through the swing design of the hanging frame part and the base part, the technical problem that the stress state of the door plate after installation is poor due to the machining or assembly error of the hanging pulley or the guide rail is overcome, the door plate can be automatically adjusted under the self-weight of the door plate so that the door plate is in the state of being perpendicular to the ground, the deformation and damage of the door plate are prevented, and the service life of the door plate is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hardware fittings, in particular to a self-adaptive hanging pulley. BACKGROUND

[0002] The hanging pulley is fixed on the sliding rail on the door frame to hoist the door leaf, so as to realize the horizontal movement of the door leaf. However, it is found in practice that due to the objective factors such as the installation inclination of the door frame, the assembly and production and processing errors of the hanging pulley itself, and the production and processing errors of the guide rail, after the hanging pulley is installed on the guide rail, the door leaf hoisted by the hanging pulley will not be perpendicular to the ground. In this case, the door leaf will be deformed under the action of its own gravity, and for the door leaf made of glass material, long-term use will cause damage to the connection point of the door leaf and the hanging pulley or even the entire door leaf. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the present application is to provide a self-adaptive hanging pulley, the hanging bracket part and the base part of which can swing relative to each other, so that the door panel installed on the base part can be in a state perpendicular to the ground under the action of its own gravity.

[0004] The embodiments of the present application are implemented by the following technical solutions:

[0005] A self-adaptive hanging pulley, comprising a hanging bracket part, a roller being arranged on the hanging bracket part; and

[0006] a base part connected to the hanging bracket part and capable of swinging relative to the hanging bracket part in the axial direction of the wheel shaft of the roller.

[0007] According to a preferred embodiment, the hanging bracket part at least comprises a hanging bracket body, the hanging bracket body being provided with a first connecting part; the base part at least comprises a base body, the base body being provided with a second connecting part adapted to the first connecting part; the first connecting part and the second connecting part are clamped to each other and can swing relative to each other.

[0008] According to a preferred embodiment, the first connecting part at least comprises an arc-shaped convex surface, the second connecting part at least comprises an arc-shaped concave surface adapted to the arc-shaped convex surface, and the arc-shaped convex surface and the arc-shaped concave surface are in sliding fit; or the first connecting part at least comprises an arc-shaped concave surface, the second connecting part at least comprises an arc-shaped convex surface adapted to the arc-shaped concave surface, and the arc-shaped convex surface and the arc-shaped concave surface are in sliding fit.

[0009] According to a preferred embodiment, the base part is arranged on the lower side of the hanging bracket part and the two are detachably connected; the upper surface of the base body and the lower surface of the hanging bracket body have a first gap therebetween.

[0010] According to a preferred embodiment, the first connecting part further comprises a positioning shaft arranged on the lower surface of the hanger body, and the arc-shaped convex surface is arranged on the circumferential surface of the positioning shaft; the second connecting part further comprises a positioning groove arranged on the upper surface of the base body, and the arc-shaped concave surface is arranged on the inner wall of the positioning groove; when the first connecting part and the second connecting part are connected, the positioning shaft is connected in the positioning groove, and the arc-shaped convex surface and the arc-shaped concave surface are in sliding fit.

[0011] According to a preferred embodiment, the end of the positioning shaft is provided with a guide head in the shape of a cone.

[0012] According to a preferred embodiment, the bottom surface of the positioning groove is a first limiting plane, and the positioning shaft is provided with a second limiting plane; when the positioning shaft is connected in the positioning groove, the first limiting plane and the second limiting plane form a second gap.

[0013] According to a preferred embodiment, the hanger body is provided with a first limiting hole, and the base body is detachably provided with a first limiting shaft; when the first connecting part and the second connecting part are connected, the first limiting shaft extends into the first limiting hole.

[0014] According to a preferred embodiment, the hanger body is provided with a second limiting hole, and the base body is provided with a threaded hole for mounting a hanging rod; when the first connecting part and the second connecting part are connected, the hanging rod mounted in the threaded hole extends into the second limiting hole.

[0015] According to a preferred embodiment, the hanger body comprises a first part and a second part which are detachably connected, and the first part and the second part are detachably connected to the base body.

[0016] The technical scheme of the embodiment of the present application has at least the following advantages and beneficial effects:

[0017] The present application has the advantages of simple structure, and through the swing design of the hanger part and the base part, the technical problem of poor stress state of the door plate after installation due to machining or assembly errors of the hanging pulley or guide rail is overcome, the door plate can be automatically adjusted to be perpendicular to the ground under the self-weight of the door plate, the deformation and damage of the door plate and the hanging pulley are prevented, and the service life of the door plate is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the hanging bracket pulley provided in an embodiment of the present invention;

[0020] Figure 2 This is a bottom view of the hanging bracket pulley provided in an embodiment of the present invention;

[0021] Figure 3 This is a front view structural diagram of the hanging bracket pulley provided in an embodiment of the present invention;

[0022] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at section AA;

[0023] Figure 5 for Figure 4 A magnified view of the structure at point B in the middle;

[0024] Figure 6 This is an exploded structural diagram of the hanging bracket pulley provided in an embodiment of the present invention;

[0025] Figure 7 This is a first exploded structural diagram of the bracket section provided in an embodiment of the present invention;

[0026] Figure 8 This is a second exploded structural diagram of the bracket section provided in an embodiment of the present invention.

[0027] Icons: 11. Base body; 111. Positioning groove; 1111. Arc-shaped concave surface; 1112. Threaded hole; 12. Connector; 121. Molded hole; 122. Through hole; 13. First limiting shaft; 2. Hanger body; 21. First split part; 211. Guide groove; 2111. First mounting hole; 2112. Embedded groove; 212. First half shaft; 2121. First half guide head; 2122. First limiting half hole; 213. Permanent magnet; 214. Third limiting half hole; 2 15. First roller; 216. First pin; 22. Second split part; 221. Fixing screw; 222. Guide protrusion; 223. Third mounting hole; 224. Second roller; 225. Second pin; 226. Second mounting hole; 227. Second half shaft; 2271. Second half guide head; 2272. Second limiting half hole; 228. Fourth limiting half hole; 3. Arc-shaped convex surface; 4. First gap; 5. Second gap; 6. Second limiting plane; 7. First limiting plane. DETAILED DESCRIPTION

[0028] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present application.

[0029] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] 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 the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application.

[0031] Please refer to Figures 1 to 8 An adaptive hanging pulley comprises a hanger part and a base part, the hanger part is provided with a roller, and the base part is connected to the hanger part and can swing in the axial direction of the wheel shaft of the roller relative to the hanger part, that is, the base part can swing on both sides in the width direction of the adaptive hanging pulley. The adaptive hanging pulley provided in the embodiment is used in the state that the hanger part is installed in a guide rail (not shown in the figure) and can move in the extension direction of the guide rail (the roller rolls in the extension direction of the guide rail in the guide rail to realize the movement of the hanger part in the guide rail). The base part is arranged on the lower side of the hanger part and extends to the outside of the guide rail, and is used for fixedly connecting a door plate and other components that need to move relative to the guide rail (hereinafter, the base part is taken as an example to describe the installation of the door plate). During use, the door plate installed on the base part swings relative to the hanger part under the action of its own weight to adapt to the optimal stress state of the door plate, that is, the door plate can be in a state perpendicular to the ground under the action of its own weight. The present application overcomes the technical problem that the stress state of the door plate after installation is poor due to the machining or assembly errors of the hanging pulley or the guide rail, and can automatically adjust the door plate to be in a state perpendicular to the ground under the action of its own weight, thereby preventing the deformation and damage of the door plate and prolonging the service life of the door plate.

[0032] Further, the hanger part at least comprises a hanger body 2, and the hanger body 2 is provided with a first connecting part; the base part at least comprises a base body 11, and the base body 11 is provided with a second connecting part matched with the first connecting part; the first connecting part and the second connecting part are clamped with each other and can swing relative to each other.

[0033] Specifically, as Figures 4 to 8As shown, in this embodiment, the first connecting part includes a positioning shaft disposed on the lower surface of the bracket body 2; the second connecting part includes a positioning groove 111 disposed on the upper surface of the base body 11. When the first connecting part and the second connecting part are engaged, the positioning shaft is engaged in the positioning groove 111. In this embodiment, the axial direction of the positioning shaft is parallel to the extension direction of the bracket body 2 (the extension direction of the bracket body 2 is parallel to the extension direction of the guide rail), and correspondingly, the extension direction of the positioning groove 111 is parallel to the axial direction of the positioning shaft. In use, the connection between the bracket part and the base part is achieved by the engagement of the positioning shaft and the positioning groove 111. At the same time, the connection structure of the positioning shaft and the positioning groove 111 also facilitates the disassembly between the bracket part and the base part. That is, in this embodiment, the bracket part and the base part are detachably connected. In this embodiment, the positioning groove 111 extends through one end face of the base body 11 in its extension direction.

[0034] More specifically, such as Figure 5 As shown, the main part of the cross-section of the positioning groove 111 is arc-shaped, while the width of the portion of the positioning groove 111 that penetrates the upper surface of the base body 11 is smaller than the width of its main part. That is, the cross-sectional shape of the positioning groove 111 is narrower at the top and wider at the bottom in the vertical direction. In this embodiment, the positioning shaft is adapted to the shape of the positioning groove 111. Therefore, during assembly, the positioning shaft is inserted into the positioning groove 111 from one end along the extension direction of the positioning groove 111, thus completing the installation of the bracket part and the base part. The structural design of the positioning shaft and the positioning groove 111 here can realize the connection between the bracket part and the base part, that is, when the base part is subjected to longitudinal external force, it will not detach from the bracket part; on the other hand, when the bracket part and / or the base part are subjected to external force (a force perpendicular to the central axis of the positioning shaft and the positioning groove 111, and not intersecting with the central axis of the positioning shaft and the positioning groove 111), the positioning shaft can rotate relative to the positioning groove 111 within the positioning groove 111, and the rotating shaft is parallel to the axial direction of the positioning shaft. In the door panel installation scenario applied in this embodiment, if the door panel initially installed on the base is tilted relative to the ground, i.e., the door panel is not perpendicular to the ground, then when the door panel is suspended, under the action of the door panel's gravity, the base swings relative to the bracket, i.e., the positioning shaft and the positioning groove 111 rotate relative to each other until the door panel is perpendicular to the ground. This facilitates the automatic realization of the ideal installation state of the door panel (door panel perpendicular to the ground).

[0035] Furthermore, to facilitate the relative rotation between the positioning shaft and the positioning groove 111, in this embodiment, an arc-shaped convex surface 3 is provided on the circumferential side of the positioning shaft, and an arc-shaped concave surface 1111 is provided on the inner wall of the positioning groove 111. When the positioning shaft is engaged in the positioning groove 111, the arc-shaped convex surface 3 and the arc-shaped concave surface 1111 slide and fit together. Figure 4 and Figure 5As shown, the positioning shaft can be understood as a cylinder, and the main part of the positioning groove 111 is adapted to the cylinder shape of the positioning shaft. The structure that the arc-shaped concave surface 1111 and the arc-shaped convex surface 3 are matched can effectively reduce the friction when the positioning shaft and the positioning groove 111 rotate, and prevent the two from being stuck due to excessive friction.

[0036] It should be noted that in other embodiments, the positioning shaft can be a spherical ball, and the cooperation with the positioning groove 111 is similar to a ball hinge structure.

[0037] Of course, in other embodiments, the positioning groove 111 can also be provided on the lower surface of the hanger body 2, and the positioning shaft is provided on the upper surface of the base body 11, which is consistent with the working principle of the present embodiment, and will not be described here.

[0038] Further, the end of the positioning shaft is provided with a guide head, which is in the shape of a cone and the small end of which is away from the positioning shaft. As shown in Figure 6 、 Figure 7 and Figure 8 , the guide head facilitates the positioning and assembly of the positioning shaft and the positioning groove 111. In the present embodiment, preferably, the guide head is in the shape of a circular cone.

[0039] In the present embodiment, the base part is provided on the lower side of the hanger part; the upper surface of the base body 11 and the lower surface of the hanger body 2 have a first gap 4 as shown in Figure 5 . In the present embodiment, the width of the first gap 4 is 0.5-2mm. Specifically, there are assembly and production errors between the components of the lifting pulley here, which are inevitable but relatively not too large, that is, the relative rotation of the positioning groove 111 and the positioning shaft within a small range can eliminate the influence caused by the production and assembly errors of the lifting pulley, that is, the adjustment of the door panel perpendicular to the ground can be realized through the relative rotation of the positioning groove 111 and the positioning shaft within a small range. Therefore, in order to prevent the door panel from swinging greatly during use, that is, the relative rotation of the positioning groove 111 and the positioning shaft within a large range, in the present embodiment, preferably, the width of the first gap 4 is 1mm. The first gap 4 here can ensure that the positioning shaft and the positioning groove 111 can rotate relatively, while preventing the rotation amplitude between them from being too large, which is safe.

[0040] Further, the upper surface of the base body 11 is an arc surface, or the lower surface of the hanger body 2 is an arc surface. In the present embodiment, preferably, the upper surface of the base body 11 is an upper convex arc surface. The arc surface structure design here can realize the large amplitude rotation of the positioning shaft relative to the positioning groove 111 (here, the large amplitude is compared with the case that the upper surface of the base body 11 and the lower surface of the hanger body 2 are both flat surfaces) under the condition that the width of the first gap 4 is small, which ensures the compactness of the self-adaptive lifting pulley structure, and is safe.

[0041] In the embodiment, the bottom surface of the positioning groove 111 is a first limiting plane 7, and the positioning shaft is provided with a second limiting plane 6; when the positioning shaft is clamped in the positioning groove 111, the second gap 5 is formed between the first limiting plane 7 and the second limiting plane 6. The width of the second gap 5 is slightly larger than the width of the first gap 4, and the purpose is to ensure that the positioning shaft and the positioning groove 111 can relatively rotate on the basis of the first gap 4, and at the same time, the rotation amplitude between them can be prevented from being too large. The second gap 5 is slightly larger than the first gap 4, so that the second limiting plane 6 and the first limiting plane 7 do not contact under the condition that the first gap 4 is effective. In the case that the first gap 4 is invalid (the first gap 4 is larger than the second gap 5), the two will play a role.

[0042] Further, as shown in Figure 2 , Figure 6 , Figure 7 and Figure 8 , the hanger body 2 is provided with a first limiting hole, and the base body 11 is detachably installed with a first limiting shaft 13; when the first connecting part and the second connecting part are clamped, the first limiting shaft 13 extends into the first limiting hole. In the embodiment, the first limiting shaft 13 is a bolt, which penetrates the base body 11 and is threadedly connected with the base body 11. In use, when the first connecting part and the second connecting part are clamped, that is, the positioning shaft is clamped in the positioning groove 111, the first limiting shaft 13 is rotated to extend into the first limiting hole, and the first limiting shaft 13 can abut to the inner wall of the first limiting hole in the axial direction of the positioning shaft, so that the first limiting shaft 13 can position the positioning shaft in the positioning groove 111 in the axial direction.

[0043] It should be noted that, in order to facilitate installation, the first limiting hole and the first limiting shaft 13 have a gap in the axial direction of the positioning shaft, which is within the range of 0.5-1.5 mm, which facilitates installation while ensuring the installation accuracy of the base body 11 and the hanger body 2. Moreover, the first limiting hole and the first limiting shaft 13 have a large gap in the wheel shaft axial direction of the roller (i.e. the swinging direction of the base part relative to the hanger part). That is, when the upper surface of the base body 11 abuts against the lower surface of the hanger body 2 in use, the first limiting shaft 13 and the first limiting hole still have a gap in the swinging direction of the base part relative to the hanger part.

[0044] Further, the hanger body 2 is provided with a second limiting hole, and the base body 11 is provided with a threaded hole 1112 for mounting a hanging rod (not shown in the figure, which is used for hanging the door plate); when the first connecting part and the second connecting part are clamped, the hanging rod mounted in the threaded hole (1112) extends into the second limiting hole. The hanging rod is embedded in the threaded hole 1112 and threadedly connected with the threaded hole 1112. In use, the inner end of the hanging rod extends into the second limiting hole, and the outer end is used for hoisting the door plate. The cooperation of the inner end of the hanging rod with the second limiting hole is the same as the cooperation of the first limiting shaft 13 with the first limiting hole, and the working principle is consistent, which will not be described here.

[0045] In the embodiment, the other end face of the base body 11 is provided with a connecting head 12 for fixedly mounting the self-adaptive lifting pulley to a damping member (not shown in the figure). The connecting head 12 is provided with a shaped hole 121 for accommodating a guide head. In the embodiment, the connecting head 12 is further provided with a through hole 122 for passing a bolt to be fixedly mounted with the damping member.

[0046] In the embodiment, the hanger body 2 includes a first part 21 and a second part 22 which are detachably connected. The lower surface of the first part 21 is provided with a first half shaft 212, and the lower surface of the second part 22 is provided with a second half shaft 227. When the first part 21 and the second part 22 are connected, the first half shaft 212 and the second half shaft 227 constitute the aforementioned positioning shaft. At the same time, the outer end of the first half shaft 212 is provided with a first half guide head 2121, and the outer end of the second half shaft 227 is provided with a second half guide head 2271. When the first part 21 and the second part 22 are connected, the first half guide head 2121 and the second half guide head 2271 constitute the aforementioned guide head. The first half guide head 2121 and the second half guide head 2271 can also play a foolproof role, which can avoid the first part 21 and the second part 22 being installed in reverse in actual use, and is beneficial to improve work efficiency.

[0047] Further, the first half shaft 212 is provided with a first limiting half hole 2122 and a third limiting half hole 214, and the second half shaft 227 is provided with a second limiting half hole 2272 and a fourth limiting half hole 228. When the first part 21 and the second part 22 are connected, the first limiting half hole 2122 and the second limiting half hole 2272 constitute the aforementioned first limiting hole, and the third limiting half hole 214 and the fourth limiting half hole 228 constitute the aforementioned second limiting hole.

[0048] In the embodiment, in order to facilitate the assembly of the first part 21 and the second part 22, a guide groove 211 is formed on the inner side surface of the first part 21, and a guide protrusion 222 matched with the guide groove 211 is arranged on the inner side surface of the second part 22. Specifically, as shown in Figure 7 and Figure 8As shown, the extension direction of the guide groove 211 is parallel to the axial direction of the positioning shaft, that is, parallel to the moving direction of the adaptive hanging pulley in the guide rail. In use, the inner side surface of the first part 21 is opposite to the inner side surface of the second part 22, and the first part 21 and the second part 22 are staggered in the extension direction of the guide groove 211. Force is applied to the first part 21 and / or the second part 22 so that the guide protrusion 222 is embedded in the guide groove 211 from the end of the guide groove 211, until the first limiting half hole 2122 and the second limiting half hole 2272 form the aforementioned first limiting hole, and the third limiting half hole 214 and the fourth limiting half hole 228 form the aforementioned second limiting hole. Finally, the hanger body 2 composed of the first part 21 and the second part 22 is installed with the base body 11. The structure design of the guide groove 211 cooperating with the guide protrusion 222 facilitates the quick assembly of the first part 21 and the second part 22.

[0049] In this embodiment, by designing the hanger body 2 as a detachable structure of the first part 21 and the second part 22, the installation of the hanger body 2 in the guide rail is facilitated. That is, the first part 21 and the second part 22 are respectively assembled in the guide rail, and then moved in the guide rail and assembled by cooperating the guide protrusion 222 and the guide groove 211. The hanger body 2 can be disassembled during assembly, thereby reducing the overall size of the hanger body 2 during assembly in the guide rail, facilitating the assembly of the hanger body 2 in the guide rail, and effectively improving the disassembly efficiency of the hanger body 2 and the guide rail. At the same time, the maintenance opening structure opened on the side wall of the guide rail in the traditional process is avoided, the structural strength of the guide rail is ensured, and the safety is high.

[0050] Further, in order to stabilize the structure of the assembled first part 21 and the second part 22, and facilitate the subsequent assembly with the base body 11, in this embodiment, as shown in Figure 6 、 Figure 7 and Figure 8 , a permanent magnet 213 corresponding to the guide protrusion 222 is arranged in the guide groove 211. The guide protrusion 222 is installed on the inner side surface of the second part 22 by the fixed screw 221, and the guide protrusion 222 has magnetism and can be attracted to the corresponding permanent magnet 213. Specifically, the third mounting hole 223 is arranged on the second part 22, and the fixed screw 221 is embedded in the third mounting hole 223 and threadedly connected therewith.

[0051] Further, the bottom of the guide groove 211 is provided with an embedding groove 2112 for installing the permanent magnet 213. The depth of the embedding groove 2112 is greater than or equal to the thickness of the permanent magnet 213, so as to prevent the permanent magnet 213 from extending out of the embedding groove 2112 and affecting the assembly of the guide protrusion 222.

[0052] In this embodiment, as shown in Figure 4 ,Figure 5 and 7 As shown in FIG. 6, the guide groove 211 is a trapezoidal groove. Specifically, as shown in FIG. 7, the large end of the guide groove 211 is arranged towards the second part 22. Further, the guide protrusion 222 is arranged with a chamfer at the end thereof towards the guide groove 211, so that the guide protrusion 222 can be fitted into the guide groove 211 and the guide protrusion 222 can be conveniently embedded into the guide groove 211. Figure 4

[0053] In other embodiments, the guide groove 211 can be arranged with the small end towards the second part 22, and the guide protrusion 222 is shaped to match the shape of the guide groove 211. At this time, the structure design of the guide groove 211 matching the guide protrusion 222 can not only facilitate the quick assembly of the first part 21 and the second part 22, but also can fixedly connect the first part 21 and the second part 22, so that the first part 21 and the second part 22 can only be disassembled from the direction of the guide groove 211.

[0054] In the present embodiment, two first rollers 215 are rotatably installed on the first part 21 through a first pin shaft 216, and two second rollers 224 are rotatably installed on the second part 22 through a second pin shaft 225. Specifically, the first part 21 is provided with a first mounting hole 2111, and the second part 22 is provided with a second mounting hole 226, the first pin shaft 216 is embedded in the first mounting hole 2111, and the second pin shaft 225 is embedded in the second mounting hole 226.

[0055] In other embodiments, the hanger body 2 can be an integral whole, that is, the first part 21 and the second part 22 are integrally formed.

[0056] The technical means disclosed in the present application scheme is not limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical solutions composed of any combination of the above technical features. It should be noted that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can also be made, which are considered to be within the scope of protection of the present application.​

Claims

1. An adaptive sling pulley, characterized by, The utility model relates to a kind of aircraft carrier, including: Hanger part, which is provided with a roller; Base part, which is connected to the hanger part and can oscillate relative to the hanger part in the wheel shaft axial direction of the roller; The hanger part at least includes a hanger body (2), and the hanger body (2) is provided with a first connecting part;The base part at least includes a base body (11), and the base body (11) is provided with a second connecting part matched with the first connecting part;The first connecting part and the second connecting part are clamped with each other and can oscillate relative to each other; The first connecting part at least includes an arc convex surface (3), and the second connecting part at least includes an arc concave surface (1111) matched with the arc convex surface (3);The arc convex surface (3) and the arc concave surface (1111) are in sliding fit; The base part is arranged on the lower side of the hanger part, and the base part and the hanger part are detachably connected;The upper surface of the base body (11) and the lower surface of the hanger body (2) have a first gap (4) therebetween; The first connecting part further includes a positioning shaft arranged on the lower surface of the hanger body (2), and the end of the positioning shaft is provided with a guide head in the shape of a cone;The arc convex surface (3) is arranged on the circumferential surface of the positioning shaft; The second connecting part further includes a positioning groove (111) arranged on the upper surface of the base body (11), and the arc concave surface (1111) is arranged on the inner wall of the positioning groove (111); When the first connecting part and the second connecting part are clamped, the positioning shaft is clamped in the positioning groove (111), and the arc convex surface (3) and the arc concave surface (1111) are in sliding fit.

2. The self- adaptive sling pulley of claim 1, wherein: The bottom surface of the positioning groove (111) is a first limiting plane (7), and the positioning shaft is provided with a second limiting plane (6); When the positioning shaft is clamped in the positioning groove (111), a second gap (5) is formed between the first limiting plane (7) and the second limiting plane (6).

3. The self-adapting sling pulley of claim 1 or 2, wherein: The hanger body (2) is provided with a first limiting hole, and the base body (11) is detachably provided with a first limiting shaft (13); When the first connecting part and the second connecting part are clamped, the first limiting shaft (13) extends into the first limiting hole.

4. The self-adapting sling pulley of claim 1 or 2, wherein: The hanger body (2) is provided with a second limiting hole, and the base body (11) is provided with a threaded hole (1112) for mounting a hanging rod; When the first connecting part and the second connecting part are clamped, the hanging rod mounted in the threaded hole (1112) extends into the second limiting hole.

5. The self-adapting sling pulley of claim 1 or 2, wherein: The hanger body (2) includes a first part (21) and a second part (22) which are detachably connected, and the first part (21) and the second part (22) are detachably connected to the base body (11).

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