Hoisting equipment and device for preventing rope from falling off groove
By designing a rope anti-drift device, using the combination of anti-drift rod and mounting bracket, the problems of poor anti-drift effect and complex maintenance of the iron plate are solved, efficient anti-drift of the rope and simplified maintenance are achieved, and the safety and smooth operation of the lifting equipment are improved.
Patent Information
- Application Number
- CN202422413799.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In the existing rolled wire rope anti-detachment scheme, the iron plate has poor anti-detachment effect and is complex in installation and maintenance, which is easy to deform, which increases the additional work burden.
A rope anti-groove-detachment device is designed, including anti-detachment rod and mounting bracket. The anti-detachment rod is consistent with the direction of the reel, and the array is opened to prevent the anti-groove-detachment. Combined with the bearing seat and elastic parts, it realizes the free rotation and limiting functions of the anti-detachment rod to prevent the rope from being disconnected.
It improves the anti-detachment effect of ropes, simplifies the maintenance and replacement process, reduces friction, and improves the smoothness and safety of rope rolling.
Smart Images
Figure CN223073800U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crane rope anti - detachment devices, and particularly relates to a lifting device and a rope anti - detachment groove device thereof. Background Art
[0002] In the field of industrial manufacturing, overhead cranes are usually used to lift equipment and parts. The stability of the wire rope on the drum of the overhead crane is crucial. In a small number of overhead cranes, there is a problem that the wire rope slips out of the winding groove on the drum. This situation may not only cause mechanical damage but also pose a serious safety hazard, threatening the safety of operators. Currently, the existing anti - detachment solutions for the drum wire rope generally use iron plates to block the wire rope to prevent it from slipping out of the groove. However, the anti - detachment force that the iron plate can withstand is relatively small, and it is prone to deformation under long - term tensile stress, eventually resulting in the failure of the anti - detachment function. In addition, the installation and maintenance of the iron plate are relatively complex, requiring regular inspection and replacement, which increases the additional workload. In view of this, the present utility model is proposed. Summary of the Utility Model
[0003] In order to solve the problems of poor anti - detachment effect and cumbersome installation and maintenance when using an iron plate to block the wire rope from slipping out, the present utility model provides a lifting device and a rope anti - detachment groove device thereof.
[0004] To solve the above - mentioned technical problems, the present utility model provides a rope anti - detachment groove device, which is used to be fixed on one side of a drum. The rope anti - detachment groove device includes an anti - detachment rod and mounting brackets. The mounting brackets are located on both sides of the anti - detachment rod for the anti - detachment rod to rotate on the mounting brackets. The direction of the anti - detachment rod is the same as that of the drum, and anti - detachment grooves are arranged in an array along the length direction of the anti - detachment rod. The array pitch of the anti - detachment grooves is adapted to the pitch of the winding grooves on the drum. The distance between the anti - detachment rod and the drum is less than the diameter of the rope, and the distance between the anti - detachment grooves and the winding grooves is greater than the diameter of the rope.
[0005] In an embodiment of the present utility model, the rope anti - detachment groove device further includes two bearing seats. The two bearing seats are respectively installed on the two mounting brackets, and bearings are arranged in both bearing seats. The two ends of the anti - detachment rod are respectively fixedly connected to the two bearings.
[0006] In an embodiment of the present utility model, the mounting bracket includes a vertical section and a horizontal section. The bottom of the vertical section is fixedly provided with a mounting base plate. One end of the horizontal section is fixedly connected to the top of the vertical section, and the other end of the horizontal section is fixedly connected to a mounting base. The bearing seat is detachably connected to the mounting base.
[0007] In an embodiment of the present utility model, both the vertical section and the horizontal section are made of channel steel, and a reinforcing rib plate is arranged at the connection between the vertical section and the mounting base plate.
[0008] In an embodiment of the utility model, the mounting base and the bearing seat are connected by bolts and nuts, and a gap is left between the mounting base and the bearing seat. The rope anti-slip groove device also includes an elastic member arranged between the mounting base and the bearing seat. The elastic member presses the bearing seat close to the reel, and when the anti-slip rod is squeezed by the rope, it drives the bearing seat to compress the elastic member.
[0009] In an embodiment of the utility model, when the elastic member is compressed to the limit position, the distance between the anti-dropping rod and the drum is equal to the diameter of the rope.
[0010] In an embodiment of the utility model, a slide groove is provided in the mounting base along the vertical direction, the top of the slide groove is open and the bottom is closed, and a T-shaped slider slidably connected to the slide groove is provided on the bearing seat, and the T-shaped slider can slide from the top opening of the slide groove to the bottom closed portion.
[0011] In an embodiment of the utility model, when the slider slides to the bottom closed position of the slide groove, the height of the center axis of the anti-drop rod is consistent with the height of the center axis of the reel.
[0012] In order to solve the technical problems in the prior art, the utility model also provides a lifting equipment, which includes a drum, a drum base, a rope and the above-mentioned rope anti-slip groove device. The drum base is located on both sides of the drum for the drum to rotate, and a winding groove for winding the rope is opened on the drum. The rope anti-slip device is fixed on one side of the drum, the anti-slip groove is arranged in alignment with the winding groove, and the rope is located in the winding groove and the anti-slip groove at the same time.
[0013] In an embodiment of the utility model, two ropes are provided, two groups of winding grooves are provided, the two groups of winding grooves are respectively located on the left and right sides of the drum, the two ropes are respectively wound in the two groups of winding grooves, two groups of anti-slip grooves are provided, and the two groups of anti-slip grooves are respectively arranged in alignment with the two groups of winding grooves.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] The anti-drop rod is arranged on one side of the drum so that the direction of the anti-drop rod is consistent with that of the drum and the anti-drop rod can rotate freely under the action of the mounting bracket. At the same time, since the anti-drop rod is provided with an anti-drop groove aligned with the winding groove, the rope can be wound into the winding groove when the drum is performing rope winding operation, and the wound rope can be restricted under the joint action of the anti-drop groove and the winding groove to prevent the rope from falling out of the groove, thereby improving the anti-drop effect of the rope. The anti-drop rod and the mounting bracket are connected by a simple rotation, which can facilitate the operator to perform subsequent maintenance and replacement of the anti-drop rod. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model, and constitute a part of the specification. Together with the following specific implementation manners, they are used to explain the embodiments of the present utility model, but do not constitute a limitation to the embodiments of the present utility model. In the accompanying drawings:
[0017] Figure 1 is a three-dimensional structural schematic diagram of the lifting equipment provided by the embodiment of the present utility model;
[0018] Figure 2 is an exploded structural schematic diagram of the lifting equipment provided by the embodiment of the present utility model;
[0019] Figure 3 is a top-view structural schematic diagram of the lifting equipment provided by the embodiment of the present utility model;
[0020] Figure 4 is Figure 2 the enlarged view at position A in
[0021] Figure 5 is a partial exploded structural schematic diagram of the rope anti-off-track device provided by the embodiment of the present utility model.
[0022] Explanation of reference numerals
[0023] 1. Rope anti-off-track device; 2. Lifting equipment; 11. Anti-off rod; 12. Installation bracket; 13. Bearing seat; 21. Drum; 22. Drum base; 23. Rope; 111. Anti-off track; 121. Vertical section; 122. Horizontal section; 123. Installation base plate; 124. Installation base; 125. Reinforcing rib plate; 126. Bolt; 127. Nut; 131. T-shaped slider; 211. Winding groove; 1241. Slide groove. Specific implementation manners
[0024] The following will detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.
[0025] Please refer to Figures 1-4 , Figure 1 which is a three-dimensional structural schematic diagram of the lifting equipment provided by the embodiment of the present utility model; Figure 2 is an exploded structural schematic diagram of the lifting equipment provided by the embodiment of the present utility model; Figure 3 is a top-view structural schematic diagram of the lifting equipment provided by the embodiment of the present utility model; Figure 4 is Figure 2Enlarged view at position A in []. The rope anti - slipping groove device 1 of the present utility model is used to be fixed on one side of the drum 21. The rope anti - slipping groove device 1 includes an anti - slipping rod 11 and a mounting bracket 12. The mounting bracket 12 is located on both sides of the anti - slipping rod 11 for the anti - slipping rod 11 to rotate on the mounting bracket 12. The direction of the anti - slipping rod 11 is the same as that of the drum 21, and anti - slipping grooves 111 are arranged in an array along the length direction of the anti - slipping rod 11. The array pitch of the anti - slipping grooves 111 is adapted to the pitch of the winding grooves on the drum 21. The distance between the anti - slipping rod 11 and the drum 21 is less than the diameter of the rope 23, and the distance between the anti - slipping grooves 111 and the winding grooves is greater than the diameter of the rope 23.
[0026] By fixing the mounting bracket 12 on one side of the drum 21 and rotatably connecting the anti - slipping rod 11 with the anti - slipping grooves 111 to the mounting bracket 12, so that the direction of the anti - slipping rod 11 is the same as that of the drum 21. At the same time, the distance between the anti - slipping rod 11 and the drum 21 is less than the diameter of the rope 23, and the distance between the anti - slipping grooves 111 and the winding grooves is greater than the diameter of the rope 23. Thus, when the drum 21 winds the rope 23, the rope 23 can be wound into the winding grooves, and under the combined action of the anti - slipping grooves 111 and the winding grooves, the rope 23 can be prevented from slipping out of the winding grooves. Since the anti - slipping rod 11 is rotatably connected to the mounting bracket 12, when the drum 21 winds the rope 23, the rope 23 can have rolling friction with the anti - slipping grooves 111 and drive the anti - slipping rod 11 to rotate to adapt to the rotation of the drum 21, so as to reduce the friction between the rope 23 and the anti - slipping rod 11 and improve the smoothness when the drum 21 winds the rope 23.
[0027] Since the array pitch of the anti - slipping grooves 111 is adapted to the pitch of the winding grooves on the drum 21, it can ensure that the anti - slipping grooves 111 opened on the anti - slipping rod 11 can be precisely aligned with the winding grooves on the drum 21. Thus, when the drum 21 winds the rope 23, the rope 23 can smoothly enter the anti - slipping grooves 111 and the winding grooves, preventing the phenomenon of the rope 23 slipping out of the grooves.
[0028] Compared with the prior art method of using an iron plate for anti - slipping, in the rope anti - slipping groove device 1 of the present utility model, since the direction of the anti - slipping rod 11 is the same as that of the drum 21 and the anti - slipping rod 11 can rotate freely under the action of the mounting bracket 12, and at the same time, since the anti - slipping grooves 111 are opened on the anti - slipping rod 11 and are aligned with the winding grooves 211, when the drum 21 winds the rope 23, the rope 23 can be wound into the winding grooves 211, and under the combined action of the anti - slipping grooves 111 and the winding grooves 211, the wound rope 23 can be restricted to prevent the phenomenon of the rope 23 slipping out of the grooves, improving the anti - slipping effect of the rope 23. The anti - slipping rod 11 and the mounting bracket 12 are simply rotatably connected, which is convenient for the operator to maintain and replace the anti - slipping rod 11 later.
[0029] In an embodiment of the utility model, the rope anti-slip groove device 1 also includes two bearing seats 13, the two bearing seats 13 are respectively installed on two mounting brackets 12, and bearings are arranged in the two bearing seats 13. The two ends of the anti-slip rod 11 are respectively fixedly connected to the two bearings to provide rotation for the anti-slip rod 11 under the action of the bearings, so that the anti-slip rod 11 can rotate to adapt to the rotation of the drum 21, thereby reducing the friction between the rope 23 and the anti-slip rod 11, and improving the smoothness of the drum 21 when winding the rope 23.
[0030] In an embodiment of the utility model, the mounting bracket 12 includes a vertical section 121 and a horizontal section 122, and a mounting base plate 123 is fixed to the bottom of the vertical section 121, so that the mounting bracket 12 is fixed to one side of the reel 21 under the action of the mounting base plate 123, and one end of the horizontal section 122 is fixedly connected to the top of the vertical section 121, and the other end of the horizontal section 122 is fixedly connected to the mounting base 124, and the bearing seat 13 is detachably connected to the mounting base 124, so that when the anti-drop rod 11 needs to be inspected and repaired, there is no need to perform any disassembly action on the mounting base plate 123 and the vertical section 121 and the horizontal section 122, and only the bearing seat 13 needs to be removed from the mounting base 124, which is convenient for the operator to disassemble and assemble the anti-drop rod 11 and improve the inspection and maintenance efficiency of the anti-drop rod 11.
[0031] In an embodiment of the utility model, the vertical section 121 and the horizontal section 122 are both made of channel steel to strengthen the overall structural strength of the mounting bracket 12, so that the mounting bracket 12 provides stable support for the anti-slip rod 11, and a reinforcing rib plate 125 is provided at the connection between the vertical section 121 and the mounting base plate 123 to further strengthen the structural strength of the mounting bracket 12 under the action of the reinforcing rib plate 125, so that the anti-slip rod 11 can play a stable anti-slip role for the rope 23 and prevent the rope 23 from slipping out of the winding groove 211.
[0032] In an embodiment of the present utility model, the mounting base 124 and the bearing seat 13 are connected by bolts 126 and nuts 127, that is, the bolts 126 pass through the mounting base 124 and the bearing seat 13 and then are connected to the nuts 127, so as to mount the bearing seat 13 on the mounting seat, and further enable the anti - detachment rod 11 to rotate adaptively to the rotation of the winding drum 21 under the action of the bearing seat 13; a gap is left between the mounting base 124 and the bearing seat 13, and the rope anti - detachment groove device 1 further includes an elastic member disposed between the mounting base 124 and the bearing seat 13. The elastic member abuts against the bearing seat 13 close to the winding drum 21. When the anti - detachment rod 11 is squeezed by the rope 23, the bearing seat 13 is driven to compress the elastic member, so that the anti - detachment rod 11 can have a small displacement under the action of the elastic member, avoiding the phenomenon that the rope 23 gets stuck between the winding drum 21 and the anti - detachment rod 11 and causing the winding drum 21 to jam during winding. That is, when the rope 23 gets stuck between the winding drum 21 and the anti - detachment rod 11, the rope 23 can squeeze the anti - detachment rod 11, and then the anti - detachment rod 11 squeezes the elastic member to compress, so that the distance between the anti - detachment rod 11 and the winding drum 21 increases, facilitating the rope 23 stuck between the winding drum 21 and the anti - detachment rod 11 to automatically enter the winding groove 211 as the winding drum 21 rotates. At the same time, the elastic member releases elastic force and drives the anti - detachment rod 11 to reset in the direction close to the winding drum 21, so as to limit the rope 23 under the combined action of the anti - detachment groove 111 and the winding groove 211, preventing the rope 23 from getting out of the groove.
[0033] In an embodiment of the present utility model, when the elastic member is compressed to the limit position, the distance between the anti - detachment rod 11 and the winding drum 21 is equal to the diameter of the rope 23, so that the anti - detachment rod 11 compresses the elastic member and has a displacement, and the distance between the displaced anti - detachment rod 11 and the winding drum 21 is just equal to the diameter of the rope 23, thus preventing the rope 23 from getting stuck between the anti - detachment rod 11 and the winding drum 21 and affecting the normal winding operation of the winding drum 21, and at the same time preventing the rope 23 from getting stuck between the anti - detachment rod 11 and the winding drum 21 and causing the rope 23 to stack, avoiding the aggravation of the rope 23 jamming phenomenon.
[0034] Please refer to Figure 5 , Figure 5It is a partial explosion structural schematic diagram of the rope anti - derailment groove device provided by the embodiment of the utility model. In the embodiment of the utility model, the mounting base 124 is provided with a chute 1241 along the vertical direction. The chute 1241 has an open top and a closed bottom. A T - shaped slider 131 slidably connected to the chute 1241 is arranged on the bearing seat 13. The T - shaped slider 131 can slide from the open top of the chute 1241 to the closed bottom, so that the bearing seat 13 is mounted on the mounting base 124 under the sliding cooperation of the T - shaped slider 131 and the chute 1241. When performing maintenance on the anti - derailment rod 11 subsequently, only need to pull the bearing seat 13 upward, then the T - shaped slider 131 can slide from the closed bottom of the chute 1241 to the open top, and then take out the bearing seat 13 from the mounting base 124, which is convenient for the operator to quickly disassemble the anti - derailment rod 11 from the mounting bracket 12 and improve the maintenance efficiency of the anti - derailment rod 11.
[0035] In the embodiment of the utility model, when the slider slides to the closed bottom of the chute 1241, the central axis height of the anti - derailment rod 11 is the same as the central axis height of the drum 21. Thus, when the anti - derailment rod 11 limits the rope 23, the anti - derailment groove 111 and the winding groove 211 can be accurately aligned, further reducing the risk of the rope 23 coming out of the winding groove 211. At the same time, it can also reduce the deviation of the rope 23 during the winding process, helping to keep the tension of each part of the rope 23 consistent and avoiding the phenomenon of wear or breakage of the rope 23 caused by uneven tension.
[0036] The utility model also provides a lifting device 2 to solve the technical problems in the prior art. The lifting device 2 includes a drum 21, a drum 21 base, a rope 23 and the above - mentioned rope anti - derailment groove device 1. The drum 21 base is located on both sides of the drum 21 for the drum 21 to rotate. The drum 21 is provided with a winding groove 211 for winding the rope 23. The rope anti - derailment groove device 1 is fixed on one side of the drum 21. The anti - derailment groove 111 and the winding groove 211 are arranged in alignment, and the rope 23 is located in both the winding groove 211 and the anti - derailment groove 111 at the same time.
[0037] The winding operation of the rope 23 is carried out by installing the reel 21 between two reel bases so that the reel 21 can rotate on the reel bases. The mounting bracket 12 is fixed on one side of the reel 21, and the anti - detachment rod 11 with an anti - detachment groove 111 is rotatably connected to the mounting bracket 12 so that the direction of the anti - detachment rod 11 is the same as that of the reel 21. At the same time, the distance between the anti - detachment rod 11 and the reel 21 is less than the diameter of the rope 23, and the distance between the anti - detachment groove 111 and the winding groove 211 is greater than the diameter of the rope 23. Thus, when the reel 21 winds the rope 23, the rope 23 can be wound into the winding groove 211, and under the combined action of the anti - detachment groove 111 and the winding groove 211, the rope 23 can be prevented from slipping out of the winding groove 211. Since the anti - detachment rod 11 is rotatably connected to the mounting bracket 12, when the reel 21 winds the rope 23, the rope 23 can have rolling friction with the anti - detachment groove 111 and drive the anti - detachment rod 11 to rotate to adapt to the rotation of the reel 21, so as to reduce the friction between the rope 23 and the anti - detachment rod 11 and improve the smoothness when the reel 21 winds the rope 23.
[0038] Since the array pitch of the anti - detachment grooves 111 is adapted to the pitch of the winding grooves 211 on the reel 21, it can be ensured that the anti - detachment grooves 111 formed on the anti - detachment rod 11 can be precisely aligned with the winding grooves 211 on the reel 21. Thus, when the reel 21 winds the rope 23, the rope 23 can smoothly enter the anti - detachment grooves 111 and the winding grooves 211, so as to limit the rope 23 under the combined action of the anti - detachment grooves 111 and the winding grooves 211 and prevent the rope 23 from slipping out of the groove.
[0039] In the embodiment of the present utility model, there are two ropes 23, and two groups of winding grooves 211 are provided. The two groups of winding grooves 211 are respectively located on the left and right sides of the reel 21, and the two ropes 23 are respectively wound in the two groups of winding grooves 211. There are two groups of anti - detachment grooves 111, and the two groups of anti - detachment grooves 111 are respectively arranged in alignment with the two groups of winding grooves 211. So that when the reel 21 rotates, the two ropes 23 can be wound simultaneously, and under the action of the anti - detachment grooves 111 on both sides of the anti - detachment rod 11, the anti - detachment rod 11 can limit the two ropes 23 simultaneously, avoiding any one of the two ropes 23 from slipping out of the groove and improving the safety when the lifting equipment 2 performs lifting operations.
[0040] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.
[0041] The preferred embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, including the combination of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present utility model will not separately describe various possible combination methods. However, these simple modifications and combinations should also be regarded as the content disclosed by the present utility model and fall within the protection scope of the present utility model.
[0042] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.
Claims
1. A rope anti - derailment device, which is used to be fixed on one side of a drum, is characterized in that The rope anti - detachment groove device includes an anti - detachment rod and a mounting bracket. The mounting bracket is located on both sides of the anti - detachment rod for the anti - detachment rod to rotate on the mounting bracket. The direction of the anti - detachment rod is the same as that of the drum, and the anti - detachment rod is provided with anti - detachment grooves arranged in an array along its length direction. The array pitch of the anti - detachment grooves is adapted to the pitch of the winding grooves on the drum. The distance between the anti - detachment rod and the drum is less than the diameter of the rope, and the distance between the anti - detachment groove and the winding groove is greater than the diameter of the rope.
2. The rope anti-slip groove device according to claim 1, characterized in that: The rope anti - detachment groove device further includes two bearing seats. The two bearing seats are respectively installed on the two mounting brackets, and bearings are arranged in both of the two bearing seats. The two ends of the anti - detachment rod are respectively fixedly connected to the two bearings.
3. The rope anti-disengagement groove device according to claim 2, wherein, The mounting bracket includes a vertical section and a horizontal section. The bottom of the vertical section is fixed with a mounting base plate. One end of the horizontal section is fixedly connected to the top of the vertical section, and the other end of the horizontal section is fixedly connected to a mounting base. The bearing seat is detachably connected to the mounting base.
4. The rope anti-disengagement groove device according to claim 3, characterized in that, Both the vertical section and the horizontal section are made of channel steel, and a reinforcing rib plate is arranged at the connection between the vertical section and the mounting base plate.
5. The rope anti-disengagement groove device according to claim 3, wherein, The mounting base and the bearing seat are connected by bolts and nuts, and there is a gap between the mounting base and the bearing seat. The rope anti - detachment groove device further includes an elastic member arranged between the mounting base and the bearing seat. The elastic member abuts against the bearing seat to be close to the drum, and when the anti - detachment rod is squeezed by the rope, the anti - detachment rod drives the bearing seat to compress the elastic member.
6. The rope anti-disengagement groove device according to claim 5, characterized in that When the elastic member is compressed to the limit position, the distance between the anti - detachment rod and the drum is equal to the diameter of the rope.
7. The rope anti-slip groove device according to claim 3, characterized in that: The mounting base is provided with a chute along the vertical direction. The top of the chute is open and the bottom is closed. The bearing seat is provided with a T - shaped slider slidably connected to the chute, and the T - shaped slider can slide from the top opening of the chute to the bottom closed part.
8. The rope anti-disengagement groove device according to claim 7, characterized in that, When the T - shaped slider slides to the bottom closed part of the chute, the central axis height of the anti - detachment rod is the same as the central axis height of the drum.
9. A lifting device, characterized in that, The hoisting equipment includes a drum, a drum base, a rope, and the rope anti - detachment groove device according to any one of claims 1 - 8. The drum base is located on both sides of the drum for the drum to rotate. The drum is provided with winding grooves for winding the rope. The rope anti - detachment device is fixed on one side of the drum. The anti - detachment grooves and the winding grooves are arranged in alignment, and the rope is simultaneously located in both the winding grooves and the anti - detachment grooves.
10. The lifting device according to claim 9, characterized in that, There are two ropes. There are two groups of winding grooves. The two groups of winding grooves are respectively located on the left and right sides of the drum. The two ropes are respectively wound in the two groups of winding grooves. There are two groups of anti - detachment grooves. The two groups of anti - detachment grooves are respectively arranged in alignment with the two groups of winding grooves.