Novel rotatable lifting hook

Abstract

According to the novel rotatable lifting hook, a rotation assembly and a driving assembly are arranged, an inner barrel of the rotation assembly is connected with a lifting rope through an upper connecting assembly, an outer gear ring is connected with a hook body through a lower connecting assembly, and the driving assembly drives the outer gear ring, the lower connecting assembly and the hook body to rotate; on the basis that an existing lifting hook moves in the vertical direction, the hook body rotates, materials can be driven to rotate synchronously, the working condition that the materials need to be lifted to rotate together is met, the driving assembly comprises a motor, the motor is connected with an electric control system of the lifting machine, and starting, stopping and the rotating speed of the motor are controlled by manually operating the electric control system; therefore, the rotation and the rotating speed of the hook body are controlled, and the lifting hook can conveniently hook materials and drive the materials to rotate.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, and in particular to a novel rotatable hook. Background Art

[0002] A crane is a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. It is also called an overhead crane, an overhead crane or a crane. The lifting of a crane mainly depends on a hook. The existing hook mainly consists of a hook body, a connecting beam and a movable pulley. The top drive device of the crane pulls the movable pulley upward through a rope, driving the hook body to move upward.

[0003] However, the hook of an existing crane can generally only move in the up and down directions, and the horizontal rotation can only be adjusted manually, which is not only inconvenient to adjust, but also cannot meet the working conditions that require the lifting material to rotate together. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a new type of rotatable hook.

[0005] The present invention provides a novel rotatable hook, comprising:

[0006] hook body;

[0007] A rotary assembly, comprising an inner cylinder, an outer gear ring sleeved on the inner cylinder, and a plurality of rolling bodies evenly arranged between the inner cylinder and the outer gear ring, wherein the bottom end of the outer gear ring is connected to the hook body through a lower connecting assembly, and the top end of the inner cylinder is connected to the lifting rope through an upper connecting assembly, and the axis extension directions of the inner cylinder and the outer gear ring are both vertical directions;

[0008] A switch assembly, including a cross limit switch connected to the upper connecting assembly;

[0009] A plurality of limit assemblies are evenly arranged around the top of the hook body, including a stopper connected to the lower connecting assembly, wherein the stopper can push the cross rod body of the cross limit switch;

[0010] The driving assembly includes a motor arranged on one side of the slewing assembly, the motor is used to drive the outer gear ring to rotate, the input end of the motor is electrically connected to the output end of the crane electronic control system, and the input end of the crane electronic control system is electrically connected to the output end of the cross limit switch.

[0011] According to the technical solution provided in the embodiment of the present application, the upper connecting assembly includes an upper connecting plate arranged at the top of the inner cylinder, and the top of the upper connecting plate is swingably connected to a rotatable movable pulley, the extension direction of the swing axis of the movable pulley and the extension direction of the axis of the movable pulley are both the first direction, and the movable pulley is connected to the lifting rope.

[0012] According to the technical solution provided in the embodiment of the present application, two limit groups are arranged along the first direction at the top of the upper connecting plate, and each of the limit groups includes two limit mounting plates arranged along the first direction, a first shaft body is installed between the tops of the two limit mounting plates, and a second mounting plate is rotatably mounted on each of the first shaft bodies, a second shaft body is installed between the two second mounting plates, and a rotatable movable pulley is mounted in the middle of the second shaft body, and the axis extension directions of the first shaft body and the second shaft body are both in the first direction.

[0013] According to the technical solution provided in the embodiment of the present application, a plurality of reinforcing plates are arranged along the second direction between the mutually adjacent limiting mounting plates in the two limiting groups, and the bottom end of each reinforcing plate is connected to the top surface of the upper connecting plate.

[0014] According to the technical solution provided in the embodiment of the present application, the upper connecting plate is extended at both ends along the first direction to form an extension plate, and the driving assembly includes a reducer arranged on the extension plate, the input shaft of the reducer is keyed to the output shaft of the motor, a driving shaft is provided at the bottom end of the output shaft of the reducer, a driving gear is mounted on the outside of the driving shaft, and the driving gear is meshed and transmission-connected with the outer gear ring.

[0015] According to the technical solution provided in the embodiment of the present application, a U-shaped combination plate is provided at the bottom end of the extension plate, a first bearing is mounted on the top of the drive shaft, and a second bearing is mounted on the bottom thereof, the first bearing is embedded and installed at the bottom of the U-shaped combination plate, and the second bearing is embedded and installed in the middle of the extension plate.

[0016] According to the technical solution provided in the embodiment of the present application, the lower connecting assembly includes a lower connecting ring connected to the bottom end of the outer gear ring, a mounting sleeve is provided inside the lower connecting ring, the hook body is connected to the mounting sleeve, and a rib plate is arranged around the bottom surface of the lower connecting ring and the outer wall of the mounting sleeve, and several of the limit assemblies are respectively installed on the corresponding rib plates.

[0017] According to the technical solution provided in the embodiment of the present application, the limiting assembly includes a mounting block connected to the barrier rod, a first clamping groove is provided at the top of the mounting block, one side wall of the first clamping groove is provided with an anti-slip groove, and the other side wall is threadedly connected with a clamping bolt, and the rib plate corresponding to the limiting assembly is located between the end of the clamping bolt and the anti-slip groove.

[0018] According to the technical solution provided in the embodiment of the present application, a second clamping groove is provided on the first clamping groove away from the anti-slip pattern side wall, a hexagonal nut is clamped in the second clamping groove, and the clamping bolt is threadedly connected to the hexagonal nut.

[0019] According to the technical solution provided in the embodiment of the present application, the limit assembly also includes a cross bar connected to the block rod, a through slot is provided on the mounting block, the cross bar is slidably arranged in the through slot, a locking screw hole is provided on one side wall of the mounting block and is connected to the through slot, and a locking bolt is threadedly connected to the locking screw hole.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The present invention is provided with a slewing assembly and a driving assembly, the inner cylinder of the slewing assembly is connected to the lifting rope through the upper connecting assembly, and the outer gear ring is connected to the hook body through the lower connecting assembly, and the driving assembly drives the outer gear ring, the lower connecting assembly and the hook body to rotate, thereby realizing the self-rotation of the hook body on the basis of the existing hook moving in the up and down directions, and can bring the material to rotate synchronously, meeting the working conditions that require the lifting of the material and rotating together, and the driving assembly includes a motor, and the motor is connected to the electronic control system of the crane, and the start and stop and speed of the motor are controlled manually by operating the electronic control system, thereby realizing the control of the rotation and speed of the hook body, etc., which is more convenient for the hook to hook the material and drive the material to rotate;

[0022] In addition, the present application also has a baffle rod connected to the lower connecting ring and a cross limit switch connected to the upper connecting plate. When the hook body, the lower connecting assembly and the outer gear ring rotate, the baffle rod will be driven to rotate. When the baffle rod pushes the cross rod body of the cross limit switch, the contact of the cross limit switch is triggered to stop the motor from running, thereby playing a limiting function and achieving the purpose of controlling the stroke. Furthermore, the baffle rod can be detachably installed on the mounting block, and the mounting block is clamped on the rib plate by clamping bolts, thereby realizing the rapid installation of the baffle rod. The rib plate surrounds the outer wall of the mounting sleeve, and the position of the baffle rod can be quickly adjusted according to the required stroke, so as to more accurately limit the rotation stroke of the hook body.

[0023] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0025] Figure 1 A schematic diagram of the structure of a novel rotatable hook provided in an embodiment of the present application;

[0026] Figure 2 A partial cross-sectional view of a novel rotatable hook provided in an embodiment of the present application;

[0027] Figure 3A schematic diagram of the installation structure of a movable pulley in a novel rotatable hook provided in an embodiment of the present application;

[0028] Figure 4 A schematic diagram of the installation structure of a lower connecting ring and an installation sleeve in a novel rotatable hook provided in an embodiment of the present application;

[0029] Figure 5 A schematic structural diagram of a novel limiter assembly in a rotatable hook provided in an embodiment of the present application;

[0030] Figure 6 A schematic cross-sectional structure diagram of a mounting block in a novel rotatable hook provided in an embodiment of the present application.

[0031] Numbers in the figure:

[0032] 1. Hook body;

[0033] 2. Rotating assembly; 21. External gear ring; 22. Inner cylinder; 23. Rolling element;

[0034] 3. Lower connecting assembly; 31. Lower connecting ring; 32. Mounting sleeve; 33. Rib plate; 34. Crossbeam;

[0035] 4. Upper connecting assembly; 41. Upper connecting plate; 42. Extension plate; 43. Position limiting mounting plate; 44. First shaft; 45. Reinforcement plate; 46. Second mounting plate; 47. Second shaft; 48. Moving pulley;

[0036] 5. driving assembly; 51. motor; 52. reducer; 53. driving shaft; 54. driving gear; 55. U-shaped combination plate;

[0037] 6. switch assembly; 61. first mounting plate; 62. L-shaped sheet metal; 63. cross limit switch;

[0038] 7. Limiting assembly; 71. Stop rod; 72. Mounting block; 73. First mounting slot; 74. Anti-slip groove; 75. Second mounting slot; 76. Hexagonal nut; 77. Clamping bolt; 78. Through slot; 79. Locking screw hole; 710. Locking bolt; 711. Cross bar. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] Please refer to Figure 1 to Figure 6 , an embodiment of the present invention provides a new type of rotatable hook, comprising:

[0042] Hook body 1;

[0043] The rotary assembly 2 comprises an inner cylinder 22, an outer gear ring 21 sleeved on the inner cylinder 22, and a plurality of rolling bodies 23 evenly arranged between the inner cylinder 22 and the outer gear ring 21. The bottom end of the outer gear ring 21 is connected to the hook body 1 through a lower connecting assembly 3, and the top end of the inner cylinder 22 is connected to the lifting rope through an upper connecting assembly 4. The axis extension directions of the inner cylinder 22 and the outer gear ring 21 are both vertical directions.

[0044] A switch assembly 6, comprising a cross limit switch 63 connected to the upper connecting assembly 4;

[0045] A plurality of limit assemblies 7 are evenly arranged around the top of the hook body 1, including a stopper 71 connected to the lower connecting assembly 3, and the stopper 71 can push the cross rod body of the cross limit switch 63;

[0046] The driving assembly 5 includes a motor 51 disposed on one side of the slewing assembly 2, the motor 51 is used to drive the outer gear ring 21 to rotate, the input end of the motor 51 is electrically connected to the output end of the crane electronic control system, and the input end of the crane electronic control system is electrically connected to the output end of the cross limit switch 63;

[0047] like Figure 1 and Figure 2 As shown, the present invention is provided with a slewing assembly 2 and a driving assembly 5, the inner cylinder 22 of the slewing assembly 2 is connected to the lifting rope through the upper connecting assembly 4, and the outer gear ring 21 is connected to the hook body 1 through the lower connecting assembly 3, and the driving assembly 5 drives the outer gear ring 21, the lower connecting assembly 3 and the hook body 1 to rotate, and then on the basis of the existing hook moving up and down, the hook body 1 can rotate by itself, and the material can be synchronously rotated to meet the working conditions that require the material to be lifted and rotated together, and the driving assembly 5 includes a motor 51, and the motor 51 is connected to the electronic control system of the crane, and the start and stop and the speed of the motor 51 are controlled by manually operating the electronic control system, so as to realize Controlling the rotation and speed of the hook body 1 makes it easier for the hook to hook and lift materials and drive the materials to rotate; further, when the hook body 1, the lower connecting assembly 3 and the outer gear ring 21 rotate, the blocking rod 71 will be driven to rotate. When the blocking rod 71 pushes the cross rod body of the cross limit switch 63, the contact action of the cross limit switch 63 is triggered. The electrical signal generated after the contact action is transmitted to the crane electronic control system, and the crane electronic control system controls the start and stop of the motor 51, thereby stopping the motor 51, playing the function of limiting and achieving the purpose of controlling the stroke. In addition, the user can directly control the start and stop and speed of the motor 51 through the crane electronic control system.

[0048] In some embodiments, the upper connection assembly 4 includes an upper connection plate 41 disposed at the top of the inner cylinder 22, and a rotatable movable pulley 48 is swingably connected to the top of the upper connection plate 41, and the extending direction of the swing axis of the movable pulley 48 and the extending direction of the axis of the movable pulley 48 are both in the first direction, and the movable pulley 48 is connected to the lifting rope;

[0049] like Figure 2 and Figure 3 As shown, the first direction is Figure 1 In the left and right directions, during the process of contraction and release of the lifting rope, the movable pulley 48 needs to rotate, and the movable pulley 48 is rotatably installed on the upper connecting plate 41, which plays a buffering role to prevent the upper connecting plate 41 from shaking along with the movable pulley 48 and the lifting rope. Under the action of gravity of the hook body 1, the upper connecting component 4, the rotating component 2 and the lower connecting component 3, the vertical state is always maintained to prevent the movable pulley 48 from shaking along with the lifting rope and causing instability of the hook body 1.

[0050] In some embodiments, two limit groups are arranged along the first direction at the top of the upper connecting plate 41, and each limit group includes two limit mounting plates 43 arranged along the first direction. A first shaft 44 is installed between the tops of the two limit mounting plates 43, and a second mounting plate 46 is rotatably connected to each first shaft 44. A second shaft 47 is installed between the two second mounting plates 46, and a rotatable movable pulley 48 is installed in the middle of the second shaft 47. The axis extension directions of the first shaft 44 and the second shaft 47 are both in the first direction.

[0051] like Figure 2 and Figure 3 As shown, the movable pulley 48 can rotate on the second shaft 47. In addition, the movable pulley 48 can swing along with the second shaft 47 and the second mounting plate 46 with the first shaft 44 as the center, so as to achieve the purpose of the movable pulley 48 being able to swing and rotate. The second mounting plate 46 is located between the two limiting mounting plates 43, which is used to limit the left and right movement of the second mounting plate 46 to avoid the loosening of the second shaft 47 caused by shaking, thereby improving the stability of the swinging.

[0052] In some embodiments, a plurality of reinforcing plates 45 are arranged along the second direction between the mutually adjacent limiting mounting plates 43 in the two limiting groups, and the bottom end of each reinforcing plate 45 is connected to the top surface of the upper connecting plate 41;

[0053] like Figure 2 and Figure 3 As shown, the second direction is Figure 1 In the front-to-back direction, the strength of the limit mounting plate 43 is improved by the reinforcing plate 45 to reduce the bending of the limit mounting plate 43 to the left or right. Optionally, two reinforcing plates 45 are provided, respectively at the front end and the rear end between the limit mounting plates 43, to facilitate the welding connection between the reinforcing plates 45 and other surfaces.

[0054] In some embodiments, the upper connecting plate 41 is extended along the first direction at both ends to form an extension plate 42, and the driving assembly 5 includes a reducer 52 disposed on the extension plate 42, the input shaft of the reducer 52 is key-connected with the output shaft of the motor 51, and the bottom end of the output shaft of the reducer 52 is provided with a driving shaft 53, and the driving shaft 53 is sleeved with a driving gear 54 on the outside, and the driving gear 54 is meshed and transmission-connected with the outer gear ring 21;

[0055] like Figure 2 and Figure 4 As shown, the speed of the motor 51 is reduced by the reducer 52, and then drives the driving shaft 53 to rotate, and finally meshes with the outer gear ring 21 through the driving gear 54 to achieve the purpose of driving the outer gear ring 21 to rotate.

[0056] In some embodiments, a U-shaped composite plate 55 is provided at the bottom of the extension plate 42, a first bearing is sleeved on the top of the drive shaft 53, and a second bearing is sleeved on the bottom thereof, the first bearing is embedded and installed at the bottom of the U-shaped composite plate 55, and the second bearing is embedded and installed in the middle of the extension plate 42;

[0057] like Figure 2 and Figure 4 As shown, the driving shaft 53 is fixed by the first bearing and the second bearing to improve the stability of the driving shaft 53 during rotation and ensure stable driving. Furthermore, the U-shaped combination plate 55 includes two vertical plates and a horizontal plate connecting the bottom ends of the two vertical plates. The top ends of the two vertical plates are connected to the bottom pad of the extension plate 42, and the first bearing is embedded in the middle of the horizontal plate.

[0058] In some embodiments, a first mounting plate 61 is provided on one side of the U-shaped composite plate 55, an L-shaped sheet metal part 62 is provided on one side of the first mounting plate 61, and a cross limit switch 63 is installed at the bottom end of the L-shaped sheet metal part 62; Figure 4 As shown, the installation of the cross limit switch 63 is realized, and by adjusting the vertical portion length and the horizontal portion length of the L-shaped sheet metal part 62, it is easy to ensure that the blocking rod 71 can stably and accurately contact the cross rod body of the cross limit switch 63.

[0059] In some embodiments, the lower connecting assembly 3 includes a lower connecting ring 31 connected to the bottom end of the outer gear ring 21, a mounting sleeve 32 is provided inside the lower connecting ring 31, the hook body 1 is connected to the mounting sleeve 32, a rib plate 33 is arranged around the bottom surface of the lower connecting ring 31 and the outer wall of the mounting sleeve 32, and a plurality of limit assemblies 7 are respectively installed on the corresponding rib plates 33;

[0060] like Figure 2 and Figure 4As shown, a cross beam 34 is provided at the top of the hook body 1, and both ends of the cross beam 34 are connected to the top of the mounting sleeve 32 to achieve the installation of the hook body 1. Compared with directly connecting the cross beam 34 to the lower connecting ring 31, after adding the mounting sleeve 32 and the rib plate 33, its structure is more stable, and the situation of the hook body 1 detaching and falling off is reduced. Furthermore, optionally, the number of limit assemblies 7 is set to two, and the limit stroke is 180°, that is, when the hook body 1, the lower connecting assembly 3 and the outer gear ring 21 rotate, the stop rod 71 of the limit assembly 7 will be driven to rotate. When the rotation exceeds 180°, the stop rod 71 will push the cross rod body of the cross limit switch 63 to stop the motor 51 from running, thereby achieving the purpose of stroke control.

[0061] In some embodiments, the limiting assembly 7 includes a mounting block 72 connected to the stop rod 71, a first clamping groove 73 is provided at the top of the mounting block 72, an anti-slip groove 74 is provided on one side wall of the first clamping groove 73, and a clamping bolt 77 is threadedly connected to the other side wall, and the rib plate 33 corresponding to the limiting assembly 7 is located between the end of the clamping bolt 77 and the anti-slip groove 74;

[0062] like Figure 4 and Figure 5 As shown, by rotating the clamping bolt 77, the thread drives the clamping bolt 77 to clamp one side of the rib plate 33, while the anti-slip pattern 74 presses against the other side of the rib plate 33, thereby finally achieving the purpose of installation. This installation method is simple and convenient, and is convenient for adjusting the position of the blocking rod 71 at any time and flexibly adjusting the limit stroke.

[0063] In some embodiments, a second clamping groove 75 is provided on the side wall of the first clamping groove 73 away from the anti-slip pattern 74, a hexagonal nut 76 is clamped in the second clamping groove 75, and a clamping bolt 77 is threadedly connected to the hexagonal nut 76;

[0064] like Figure 5 and Figure 6 As shown, the threaded connection of the clamping bolt 77 is achieved by the hexagonal nut 76, and there is no need to open a screw hole on the mounting block 72, thereby reducing the processing complexity. The second clamping groove 75 can limit the rotation of the hexagonal nut 76 to ensure the stable rotation and clamping of the clamping bolt 77. Optionally, an opening is provided on one side of the second clamping groove 75 to facilitate the removal of the hexagonal nut 76, making assembly more convenient.

[0065] In some embodiments, the limiting assembly 7 further includes a cross bar 711 connected to the stopper 71, a through slot 78 is provided on the mounting block 72, the cross bar 711 is slidably disposed in the through slot 78, a locking screw hole 79 communicating with the through slot 78 is provided on one side wall of the mounting block 72, and a locking bolt 710 is threadedly connected to the locking screw hole 79;

[0066] like Figure 5 and Figure 6As shown, the cross bar 711 is inserted into the through slot 78 , and the cross bar 711 is pressed against by the locking bolt 710 , so that the cross bar 711 and the blocking rod 71 are quickly installed and fixed.

[0067] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0068] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A new type of rotatable hook, characterized in that: include: Hook body (1); A rotary assembly (2) comprises an inner cylinder (22), an outer toothed ring (21) mounted on the inner cylinder (22), and a plurality of rolling bodies (23) evenly arranged between the inner cylinder (22) and the outer toothed ring (21), wherein the bottom end of the outer toothed ring (21) is connected to the hook body (1) via a lower connecting assembly (3), and the top end of the inner cylinder (22) is connected to a lifting rope via an upper connecting assembly (4), and the axis extension directions of the inner cylinder (22) and the outer toothed ring (21) are both vertical directions; A switch assembly (6), comprising a cross limit switch (63) connected to the upper connecting assembly (4); A plurality of limit assemblies (7) are evenly arranged around the top of the hook body (1), and include a stop rod (71) connected to the lower connection assembly (3), wherein the stop rod (71) can push the cross rod body of the cross limit switch (63); A drive assembly (5) comprises a motor (51) arranged on one side of the slewing assembly (2), the motor (51) being used to drive the outer gear ring (21) to rotate, the input end of the motor (51) being electrically connected to the output end of the crane electric control system, and the input end of the crane electric control system being electrically connected to the output end of the cross limit switch (63).

2. The novel rotatable hook according to claim 1 is characterized in that: The upper connecting assembly (4) includes an upper connecting plate (41) arranged at the top end of the inner cylinder (22), and a rotatable movable pulley (48) is swingably connected to the top end of the upper connecting plate (41), and the extension direction of the swing axis of the movable pulley (48) and the extension direction of the axis of the movable pulley (48) are both the first direction, and the movable pulley (48) is connected to the lifting rope.

3. The novel rotatable hook according to claim 2 is characterized in that: Two limit groups are arranged along the first direction at the top of the upper connecting plate (41), and each of the limit groups includes two limit mounting plates (43) arranged along the first direction. A first shaft (44) is installed between the tops of the two limit mounting plates (43), and a second mounting plate (46) is rotatably mounted on each of the first shafts (44). A second shaft (47) is installed between the two second mounting plates (46), and a rotatable movable pulley (48) is mounted in the middle of the second shaft (47). The axis extension directions of the first shaft (44) and the second shaft (47) are both in the first direction.

4. The novel rotatable hook according to claim 3 is characterized in that: A plurality of reinforcing plates (45) are arranged along the second direction between the mutually adjacent limiting mounting plates (43) in the two limiting groups, and the bottom end of each reinforcing plate (45) is connected to the top surface of the upper connecting plate (41).

5. The novel rotatable hook according to claim 2 is characterized in that: The upper connecting plate (41) is extended along the first direction at both ends to form an extension plate (42), the driving assembly (5) comprises a reducer (52) arranged on the extension plate (42), the input shaft of the reducer (52) is key-connected with the output shaft of the motor (51), the bottom end of the output shaft of the reducer (52) is provided with a driving shaft (53), the driving shaft (53) is sleeved with a driving gear (54) on the outside, and the driving gear (54) is meshed and transmission-connected with the outer gear ring (21).

6. The novel rotatable hook according to claim 5 is characterized in that: A U-shaped combined plate (55) is provided at the bottom end of the extension plate (42); a first bearing is sleeved on the top of the drive shaft (53) and a second bearing is sleeved on the bottom thereof; the first bearing is embedded in the bottom of the U-shaped combined plate (55) and the second bearing is embedded in the middle of the extension plate (42).

7. The novel rotatable hook according to claim 1 is characterized in that: The lower connecting assembly (3) comprises a lower connecting ring (31) connected to the bottom end of the outer toothed ring (21); a mounting sleeve (32) is provided inside the lower connecting ring (31); the hook body (1) is connected to the mounting sleeve (32); a rib plate (33) is arranged around the bottom surface of the lower connecting ring (31) and the outer wall of the mounting sleeve (32); and a plurality of the limiting assemblies (7) are respectively mounted on corresponding rib plates (33).

8. The novel rotatable hook according to claim 7 is characterized in that: The limiting assembly (7) comprises a mounting block (72) connected to the blocking rod (71); a first clamping groove (73) is provided at the top of the mounting block (72); a side wall of the first clamping groove (73) is provided with an anti-slip groove (74); a clamping bolt (77) is threadedly connected to the other side wall; a rib plate (33) corresponding to the limiting assembly (7) is located between the end of the clamping bolt (77) and the anti-slip groove (74).

9. The novel rotatable hook according to claim 8, characterized in that: A second clamping groove (75) is provided on the side wall of the first clamping groove (73) away from the anti-slip pattern (74), a hexagonal nut (76) is clamped in the second clamping groove (75), and the clamping bolt (77) is threadedly connected to the hexagonal nut (76).

10. The novel rotatable hook according to claim 9, characterized in that: The limiting assembly (7) also includes a cross bar (711) connected to the blocking rod (71); a through slot (78) is provided on the mounting block (72); the cross bar (711) is slidably arranged in the through slot (78); a locking screw hole (79) connected to the through slot (78) is provided on a side wall of the mounting block (72); a locking bolt (710) is threadedly connected to the locking screw hole (79).

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