Electric rotary lifting hook group
By designing an annular structure and disk in the electric rotary hook group and using locking screws to limit the rotation of the disk, the problem that the hook cannot prevent rotation when the drive device fails, and convenient use in the event of a fault is achieved.
Patent Information
- Application Number
- CN202520741924.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2035-04-18
AI Technical Summary
When the existing electric rotary hook fails, the hook cannot prevent it from continuing to rotate, resulting in inconvenient use or inability to continue to use.
An electric rotary hook group is designed. By setting a ring structure and a disc in the hook bracket and limiting the rotation of the disc with a locking screw, the function of preventing the hook from continuing to rotate when the drive device fails.
When the drive device fails, by adjusting the position of the ring structure and using a locking screw, the hook can be effectively prevented from continuing to rotate, thereby facilitating continued use, and solving the problem of inconvenience in the prior art.
Smart Images
Figure CN222907320U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hooks, in particular to an electric rotating hook group. Background Art
[0002] At present, the existing electric rotating hook usually utilizes a slewing bearing to rotatably connect the hook to the hook bracket. When in use, the rotation of the hook can be achieved by a driving device installed on the hook bracket and connected to the slewing bearing. After the hook is rotated into place, the braking function of the driving device can be used to prevent the hook from continuing to rotate, so as to avoid instability of the heavy object during the lifting process. However, in actual use, the driving device sometimes malfunctions and is damaged, such as the failure of the braking function. Then, when the driving device is removed for maintenance, although the existing electric rotating hook can manually realize the rotation of the hook, it cannot prevent the hook from continuing to rotate after the hook is rotated into place, so that it cannot be used continuously, or there are many inconveniences when it is continued to be used. Therefore, there are still shortcomings and deficiencies in the prior art. Utility Model Content
[0003] The purpose of the utility model is to provide an electric rotating hook assembly to solve the problems raised in the above background technology.
[0004] In order to solve the above problems, the technical solution adopted by the utility model is:
[0005] An electric rotating hook assembly comprises a hook bracket, two sets of movable pulley groups arranged opposite to each other are installed on the top surface of the hook bracket, a bearing plate is arranged below the hook bracket, the bearing plate and the hook bracket are rotatably connected through an external gear slewing bearing, a hook is installed on the bottom surface of the bearing plate, the external gear slewing bearing is transmission-connected to a driving device installed on the hook bracket, a rotating shaft arranged coaxially with the external gear slewing bearing is fixedly installed on the top surface of the bearing plate, the top end of the rotating shaft is located in the hook bracket, and the top end of the rotating shaft is coaxially sleeved A polygonal block is provided, and a horizontally distributed annular structure which can be adjusted in the vertical direction is installed in the hook bracket. An annular groove is provided on the inner wall of the annular structure along the circumference of the annular structure, and the annular structure is rotatably connected to a matching disc through the annular groove. The disc is coaxially arranged with the rotating shaft, and a polygonal through hole matching the polygonal block is vertically provided on the disc, and a locking screw is also provided between the disc and the annular structure, and the locking screw is parallel to the radial direction of the disc, and the locking screw is threadedly connected to the annular structure and passes through the annular structure.
[0006] Further, vertically distributed guide rods are fixedly connected inside the hook brackets on both sides of the rotating shaft. Convex blocks are fixedly connected to the outer sides of both sides of the annular structure. The convex blocks are respectively slidably sleeved on the guide rods, and locking bolts parallel to the radial direction of the guide rods are threadedly connected to the convex blocks. The screw rod ends of the locking bolts all penetrate through the convex blocks.
[0007] Further, springs are sleeved on the guide rods below the convex blocks. The two ends of the springs are respectively connected to the convex blocks and the hook brackets.
[0008] Further, a locking sleeve is sleeved and threadedly connected to the locking screw rod outside the annular structure.
[0009] Further, a handwheel is fixedly sleeved on the end of the locking screw rod outside the annular structure.
[0010] Further, a counterweight block is detachably and fixedly connected to one side of the hook bracket away from the driving device.
[0011] Further, a fixed shaft coaxial with the rotating shaft is fixedly connected to the bottom surface of the bearing disc. An inverted U-shaped bracket is fixedly connected to the fixed shaft. A horizontally distributed pin shaft is installed inside the inverted U-shaped bracket. The top of the hook is rotatably sleeved on the pin shaft.
[0012] Adopting the above technical solution, the beneficial effects of the present utility model are as follows:
[0013] When the present utility model is in use, when the driving device can operate normally, it is the same as the prior art. The driving device can drive the hook to rotate. And when the hook rotates to the position, the driving device's own braking function can be used to prevent the hook from continuing to rotate. When the driving device fails and needs to be removed for repair, after adjusting the position of the annular structure in the vertical direction, the polygonal block can be inserted into the polygonal through hole. At this time, when the hook is manually rotated, the disc can rotate synchronously. Then when the hook rotates to the position, by rotating the locking screw rod until the locking screw rod abuts against the disc, the rotation of the disc can be restricted, so that the hook can be prevented from continuing to rotate, thus facilitating continuous use. Generally speaking, when the driving device fails and needs to be removed for repair, the present utility model can still be conveniently used continuously. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is one of the structural schematic diagrams of the present utility model;
[0015] Figure 2 is the second structural schematic diagram of the present utility model;
[0016] Figure 3 is Figure 1 the partial enlarged structural schematic diagram at A in
[0017] Figure 4 For Figure 1 a partial enlarged structural schematic diagram at position B in
[0018] Figure 5 a three-dimensional structural schematic diagram of part of the device of the present utility model;
[0019] Figure 6 For Figure 5 a structural schematic diagram in a split state.
[0020] Reference numerals: 1, rotating shaft; 2, annular structure; 21, annular groove; 22, convex block; 3, disc; 31, polygonal through hole; 4, polygonal block; 5, locking screw; 6, guide rod; 7, spring; 8, locking sleeve; 9, inverted U-shaped bracket; 10, handwheel; 11, pin shaft; 12, hook; 13, hook bracket; 14, movable pulley block; 15, bearing plate; 16, external gear type slewing bearing; 17, locking bolt; 18, driving motor; 19, gear; 20, counterweight block. Specific embodiments
[0021] To make the objectives, technical solutions and beneficial effects of the present utility model clearer, the following further describes the embodiments of the present utility model in detail with reference to the drawings.
[0022] As Figures 1 to 6 shown, the present utility model provides an electric rotating hook group, including a hook bracket 13. On the top surface of the hook bracket 13, two sets of oppositely arranged movable pulley blocks 14 are installed. Below the hook bracket 13, there is a bearing plate 15. The bearing plate 15 and the hook bracket 13 are rotationally connected through an external gear type slewing bearing 16, that is, the inner ring of the external gear type slewing bearing 16 is connected to the hook bracket 13, and the outer ring of the external gear type slewing bearing 16 is connected to the bearing plate 15; on the bottom surface of the bearing plate 15, a hook 12 is installed, and the hook 12 is an anti-drop hook; the external gear type slewing bearing 16 is drivingly connected to a driving device installed on the hook bracket 13. Specifically, the hook bracket 13, the movable pulley block 14, the bearing plate 15, the external gear type slewing bearing 16, the hook 12 and the driving device are all prior arts; and the driving device includes a driving motor 18 vertically installed in the hook bracket 13. The output shaft of the driving motor 18 passes through the hook bracket 13 and is sleeved with a gear 19 that meshes with the external gear type slewing bearing 16; when in use, when the driving device can operate normally, it is the same as the prior art. When the driving motor 18 is started, under the action of the gear 19 and the external gear type slewing bearing 16, the hook 12 can be driven to rotate by the bearing plate 15, and when the hook 12 rotates to the position, the driving motor 18's own braking function can be used to prevent the hook 12 from continuing to rotate.
[0023] In addition, a rotating shaft 1 coaxially arranged with the external-tooth slewing bearing 16 is fixedly installed on the top surface of the carrier plate 15. The top end of the rotating shaft 1 is located inside the hook support 13, and a polygonal block 4 is coaxially and fixedly sleeved on the top end of the rotating shaft 1. The polygonal block 4 can be set as a hexagonal block. An annular structure 2 horizontally distributed and capable of adjusting its position in the vertical direction is installed inside the hook support 13. An annular groove 21 is formed in the inner wall of the annular structure 2 along the circumferential direction of the annular structure 2, and a matching disc 3 is rotatably connected to the annular structure 2 through the annular groove 21, that is, the disc 3 can rotate inside the annular structure 2. The disc 3 is coaxially arranged with the rotating shaft 1, and a polygonal through hole 31 adapted to the polygonal block 4 is vertically formed in the disc 3. The position of the polygonal through hole 31 is opposite to that of the polygonal block 4, and their shapes and sizes are the same. A locking screw 5 is further arranged between the disc 3 and the annular structure 2. The locking screw 5 is parallel to the radial direction of the disc 3 and is threadedly connected to the annular structure 2 and penetrates through the annular structure 2. Specifically, by rotating the locking screw 5 until the locking screw 5 abuts against the disc 3, the position of the disc 3 can be locked and fixed to limit the disc 3 from continuing to rotate.
[0024] During use, when the driving device can operate normally, the annular structure 2 is located above the polygonal block 4. When the driving device breaks down and needs to be removed for repair, after adjusting the position of the annular structure 2 in the vertical direction, the polygonal block 4 can be inserted into the polygonal through hole 31. At this time, when the hook 12 is manually rotated, the disc 3 can rotate synchronously. Then, when the hook 12 rotates to the in-place position, by rotating the locking screw 5 until the locking screw 5 abuts against the disc 3, the disc 3 can be restricted from continuing to rotate, which can prevent the hook 12 from continuing to rotate, so as to facilitate continued use. Generally speaking, when the driving device of the present utility model breaks down and needs to be removed for repair, it can still be convenient for continued use.
[0025] The specific setting method for the annular structure 2 to be able to adjust its position in the vertical direction is as follows: As Figures 1 to 4 shown, vertical guide rods 6 are fixedly connected inside the hook supports 13 on both sides of the rotating shaft 1. Convex blocks 22 are fixedly connected to the outer sides of both sides of the annular structure 2. The convex blocks 22 are respectively slidably sleeved on the guide rods 6, and locking bolts 17 parallel to the radial direction of the guide rods 6 are threadedly connected to the convex blocks 22. The screw ends of the locking bolts 17 penetrate through the convex blocks 22. Specifically, by rotating the locking bolts 17 until the screw ends of the locking bolts 17 abut against the guide rods 6, the position of the annular structure 2 can be fixed on the guide rods 6. By rotating the locking bolts 17 in the reverse direction and moving the screw ends of the locking bolts 17 away from the guide rods 6, the position of the annular structure 2 can be adjusted in the vertical direction along the guide rods 6. After the position of the annular structure 2 is adjusted in place, the position of the annular structure 2 can be fixed by using the locking bolts 17 again, so as to facilitate the adjustment of the position of the annular structure 2 in the vertical direction.
[0026] Further, as Figures 1 to 4 shown, springs 7 are sleeved on the guide rods 6 located below the bumps 22, and two ends of each spring 7 are respectively connected with the bump 22 and the hook bracket 13. Specifically, in use, when the annular structure 2 slides downward along the guide rod 6, the spring 7 can be compressed. At this time, the position of the annular structure 2 can also be fixed by using the locking bolt 17. When the locking bolt 17 is loosened, under the action of the spring 7 rebounding, the annular structure 2 can slide upward along the guide rod 6, so as to more conveniently adjust the position of the annular structure 2 in the vertical direction.
[0027] Further, as Figure 5 shown in Figure 6 a locking sleeve 8 is sleeved and threadedly connected on the locking screw rod 5 located outside the annular structure 2. Specifically, the radial cross-section of the outer periphery of the locking sleeve 8 is hexagonal, so that it is convenient to rotate the locking sleeve 8 on the locking screw rod 5. In use, when the locking screw rod 5 abuts against the disc 3, by rotating the locking sleeve 8 on the locking screw rod 5 until the locking sleeve 8 abuts against the outer wall of the annular structure 2, the annular structure 2 can exert a reaction force on the locking sleeve 8, so that the external thread on the locking screw rod 5 fits more tightly with the internal thread on the annular structure 2, so as to increase the friction force between the two and prevent the locking screw rod 5 from loosening.
[0028] Further, as Figure 5 shown in Figure 6 a hand wheel 10 is fixedly sleeved at the end of the locking screw rod 5 located outside the annular structure 2, and the hand wheel 10 can facilitate the rotation of the locking screw rod 5.
[0029] Further, as Figure 1 shown in Figure 2 a counterweight 20 is detachably and fixedly connected to the side of the hook bracket 13 far from the driving device, and the weight of the counterweight 20 is based on the weight of the driving device to prevent the hook bracket 13 from tilting due to unequal weights on both sides. In addition, when the driving device is removed for maintenance, the counterweight 20 can be removed.
[0030] Further, as Figure 1 shown in Figure 2 a fixed shaft coaxially arranged with the rotating shaft 1 is fixedly connected to the bottom surface of the bearing disc 15, an inverted U-shaped bracket 9 is fixedly connected to the fixed shaft, a horizontally distributed pin shaft 11 is installed in the inverted U-shaped bracket 9, and the top of the hook 12 is rotatably sleeved on the pin shaft 11. Specifically, in use, the hook 12 can swing around the pin shaft 11, so as to more conveniently lift heavy objects by the hook 12. In addition, a protective cover detachably installed on the hook bracket 13 is sleeved outside the external tooth type slewing bearing 16 and the gear 19, and the protective cover is of a split structure.
[0031] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. An electric rotating hook assembly, comprising a hook bracket, two sets of movable pulleys arranged opposite to each other are installed on the top surface of the hook bracket, a bearing plate is arranged below the hook bracket, the bearing plate and the hook bracket are rotatably connected through an external gear slewing bearing, a hook is installed on the bottom surface of the bearing plate, and the external gear slewing bearing is transmission-connected to a driving device installed on the hook bracket, characterized in that: A rotating shaft coaxially arranged with the external gear slewing bearing is fixedly installed on the top surface of the supporting plate, the top end of the rotating shaft is located in the hook bracket, and a polygonal block is coaxially mounted on the top end of the rotating shaft, a horizontally distributed annular structure capable of adjusting its position in the vertical direction is installed in the hook bracket, an annular groove is provided on the inner wall of the annular structure along the circumference of the annular structure, and the annular structure is rotatably connected with a matching disc through the annular groove, the disc is coaxially arranged with the rotating shaft, a polygonal through hole matching the polygonal block is vertically provided on the disc, and a locking screw is also provided between the disc and the annular structure, the locking screw is parallel to the radial direction of the disc, and the locking screw is threadedly connected to the annular structure and passes through the annular structure.
2. The electric rotating hook assembly according to claim 1, characterized in that: The hook brackets on both sides of the rotating shaft are fixedly connected with vertically distributed guide rods, and the two sides of the annular structure are fixedly connected with protrusions, which are slidably mounted on the guide rods respectively, and the protrusions are threadedly connected with locking bolts parallel to the radial direction of the guide rods, and the screw ends of the locking bolts pass through the protrusions.
3. The electric rotating hook assembly according to claim 2, characterized in that: The guide rods below the convex blocks are sleeved with springs, and the two ends of the springs are respectively connected with the convex blocks and the hook brackets.
4. The electric rotating hook assembly according to claim 1, characterized in that: A locking sleeve is sleeved on and threadedly connected to the locking screw outside the annular structure.
5. An electric rotating hook assembly according to claim 1 or 4, characterized in that: The end fixing sleeve of the locking screw outside the annular structure is provided with a hand wheel.
6. The electric rotating hook assembly according to claim 1, characterized in that: A counterweight block is detachably and fixedly connected to a side of the hook bracket away from the driving device.
7. The electric rotating hook assembly according to claim 1, characterized in that: A fixed shaft coaxially arranged with the rotating shaft is fixedly connected to the bottom surface of the carrier plate, an inverted U-shaped bracket is fixedly connected to the fixed shaft, a horizontally distributed pin shaft is installed in the inverted U-shaped bracket, and the top of the hook is rotatably sleeved on the pin shaft.