Electric lifting descent control device
By introducing a fall-proof mechanism and a double-layer gear set into the electric lift and lowering device, the conical pins and one-way mechanisms are used to prevent reversal, the safety hazards of the electric lift and lowering device are solved and safe and reliable electric drilling operation is achieved.
Patent Information
- Application Number
- CN202422242109.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-13
Smart Images
Figure CN223060648U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of descenders, in particular to an electric ascending and descending descender. Background Art
[0002] Electric ascending and descending descenders are widely used in the rescue and escape of high-rise buildings, ships, etc. At present, the existing electric ascending and descending descenders are relatively complex to use, there are blind spots in operation, they are not flexible enough, and there is no anti-misoperation function at the electric drill drive part. Moreover, there is no anti-reverse device, or the anti-reverse function of the anti-reverse device is relatively poor. When used manually without paying attention to the rotation direction of the electric drill, there are certain safety hazards and it is easy to cause safety accidents. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the above problems existing in the prior art and provide an electric ascending and descending descender, which can prevent the descender from reversing during misoperation, thus causing safety accidents.
[0004] To achieve the above technical purpose and reach the above technical effect, the utility model is realized through the following technical solutions:
[0005] The utility model provides an electric ascending and descending descender, which includes a gear box, a rear cover and a base. The rear cover is arranged on one side of the gear box, and the base is arranged on the other side of the gear box. The electric ascending and descending descender further includes an anti-falling mechanism and a double-layer gear set. The anti-falling mechanism is arranged on the base and penetrates through the gear box. The double-layer gear set is arranged on the base and located inside the gear box, and the double-layer gear set meshes with the anti-falling mechanism;
[0006] Among them, the anti-falling mechanism includes a first wheel shaft, the first wheel shaft is arranged on the base, an anti-falling cover is arranged on the first wheel shaft, the anti-falling cover is located outside the rear cover, and a conical pin is movably installed inside the first wheel shaft. One end of the conical pin is provided with a magnet, and a boss is also arranged on the anti-falling cover;
[0007] Among them, a one-way mechanism is arranged inside the double-layer gear set.
[0008] In an embodiment of the utility model, the anti-falling mechanism further includes a first gear, the first gear is arranged on the first wheel shaft and is located inside the gear box.
[0009] In an embodiment of the utility model, the one-way mechanism includes a track groove arranged inside the double-layer gear set and a limiting shaft that can move along the track groove. The one-way mechanism further includes a spring, one end of the spring is connected to the end of the track groove, and the other end of the spring is connected to the limiting shaft.
[0010] In an embodiment of the present utility model, the electric lifting and lowering device further includes a second wheel shaft, the second wheel shaft is disposed on the base, and a second gear is disposed on the second wheel shaft, and the second gear meshes with the upper gear of the double-layer gear.
[0011] In an embodiment of the present utility model, the electric lifting and lowering device further includes a third wheel shaft, a one-way ratchet is disposed on the third wheel shaft, and the one-way ratchet meshes with the first gear.
[0012] In an embodiment of the present utility model, the electric lifting and lowering device further includes a rope winding wheel, the rope winding wheel is disposed on the first wheel shaft, and the rope winding wheel is located below the base.
[0013] In an embodiment of the present utility model, the electric lifting and lowering device further includes a handle, the handle is disposed on the base, and the handle is located on one side of the gear box.
[0014] In summary, the present utility model provides an electric lifting and lowering device. When the electric drill reverses due to misoperation of the first gear, under the action of the one-way mechanism, the double-layer gear set will stop rotating, so that the user will not be hit by the reverse rotation of the pistol drill. Thus, it can prevent the user from being hit by the reverse rotation of the pistol drill and eliminate potential safety hazards.
[0015] In addition, the present utility model patent provides an electric lifting and lowering device. When the rope winding wheel rotates rapidly (descends rapidly), the rotation of the rope winding wheel drives the first wheel shaft to rotate. When a certain speed is reached, at the same time, the conical pin slides outwards under the action of centrifugal force and is stuck with the boss, so that the first wheel shaft stops rotating, thereby realizing an anti-falling function. Thus, it better protects the life and property safety of the user and eliminates potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0018] Figure 2 is a schematic diagram of the internal structure of the present utility model;
[0019] Figure 3 is a schematic diagram of a partial structure of the present utility model;
[0020] Figure 4 is the present utility model Figure 3Top view;
[0021] Figure 5 is a sectional view of the overall structure of the present utility model;
[0022] Figure 6 is the present utility model Figure 5 front view;
[0023] Figure 7 is a schematic diagram of a partial structure of the present utility model;
[0024] Figure 8 is a schematic diagram of the structure of the base of the present utility model;
[0025] Figure 9 is a schematic diagram of the structure of the anti-falling cover of the present utility model.
[0026] Explanation of the reference numerals in the figure: 1 - base, 2 - handle body, 3 - gearbox, 4 - rear cover, 5 - cam, 6 - anti-falling cover, 7 - rope winding wheel, 8 - upper gear, 9 - electric drill connection port, 10 - central shaft, 11 - first wheel shaft, 12 - one-way ratchet, 13 - third wheel shaft, 14 - first gear, 15 - second gear, 16 - lower gear, 17 - track groove, 18 - limit shaft, 19 - second wheel shaft, 20 - spring, 21 - magnet, 22 - taper pin, 23 - mounting hole, 24 - chute, 25 - steering shaft, 26 - boss. Specific embodiments
[0027] The following will refer to the accompanying drawings and in combination with embodiments to detail the present utility model.
[0028] Please refer to Figure 1 , Figure 7 and Figure 8 , the present utility model provides an electric lifting and lowering device which can prevent reverse rotation during misoperation, thereby avoiding safety accidents caused by spraining the wrist of the user during use. Specifically, the electric lifting and lowering device includes a gearbox 3, a rear cover 4 and a base 1. The rear cover 4 is arranged on one side of the gearbox 3, and the base 1 is arranged on the other side of the gearbox 3. In an embodiment of the present utility model, the electric lifting and lowering device further includes a handle which is arranged on the base 1 and is located on one side of the gearbox 3. The rear cover 4 is movably connected to one end of the gearbox 3, for example, it can be connected by a shaft, but not limited thereto. Longitudinal chutes 24 are arranged on the base 1, and the number of the chutes 24 can be two. Mounting holes 23 for installing pressure wheels are also arranged on the base 1. The handle includes a handle body 2 and a cam 5, and the cam 5 is arranged on one side of the handle body 2. A steering shaft 25 is also arranged on the base 1, and the steering shaft 25 passes through one of the chutes 24.
[0029] Please refer to Figure 1 Figure 2 ,Figure 5 , Figure 8 and Figure 9 , in an embodiment of the present utility model, the electric lifting and lowering device further includes an anti-falling mechanism. The anti-falling mechanism is disposed on the base 1 and penetrates through the gearbox 3. Specifically, the anti-falling mechanism includes a first wheel shaft 11. The first wheel shaft 11 is disposed on the base 1 and is located in another one of the chutes 24. An anti-falling cover 6 is disposed on the first wheel shaft 11. The anti-falling cover 6 is located outside the rear cover 4. A taper pin 22 is movably installed in the first wheel shaft 11. One end of the taper pin 22 is provided with a magnet 21, and the magnet 21 is located at the small-head end of the taper pin 22. A boss 26 is further provided on the anti-falling cover 6. In an embodiment of the present utility model, the anti-falling mechanism further includes a first gear 14. The first gear 14 is disposed on the first wheel shaft 11 and is located in the gearbox 3. When the electric lifting and lowering device undergoes a rapid reverse rotation (rapid fall), due to the action of centrifugal force, the taper pin 22 is thrown outwards. Due to the blocking action of the boss 26, the first gear 14 stops reverse rotation.
[0030] Please refer to Figures 1 to 4 , in an embodiment of the present utility model, the electric lifting and lowering device further includes a double-layer gear set. The double-layer gear set is disposed on the base 1 and is located in the gearbox 3. The double-layer gear set meshes with the anti-falling mechanism. The double-layer gear set includes an upper gear 8 and a lower gear 16. The center points of the upper gear 8 and the lower gear 16 are located on the same vertical line, that is, the upper gear 8 and the lower gear 16 share a central shaft 10. The upper gear 8 is larger than the lower gear 16. A one-way mechanism is disposed inside the upper gear 8. The one-way mechanism includes a track groove 17 disposed inside the double-layer gear set and a limit shaft 18 that can move along the track groove 17. The number of the track groove 17 and the limit shaft 18 is the same, which can be four. The one-way mechanism further includes a spring 20. One end of the spring 20 is connected to the end of the track groove 17, and the other end of the spring 20 is connected to the limit shaft 18. When the upper gear 8 rotates forward, the limit shaft 18 runs along the tangent of the track groove 17, causing the spring 20 to be compressed. The limit shaft 18 moves away from the central shaft 10, and the central shaft 10 and the upper gear 8 achieve one-way rotation (the function of one-way rotation is to prevent the user from being sprained due to the reverse rotation of the pistol drill hitting the hand). Conversely, when rotating in the reverse direction, the limit shaft 18 firmly presses the central shaft 10 to achieve the internal power transmission of the electric lifting and lowering device.
[0031] Please refer to Figures 2 to 6, in an embodiment of the present utility model, the electric lifting and lowering device further includes a second wheel shaft 19. The second wheel shaft 19 is disposed on the base 1. A second gear 15 is disposed on the second wheel shaft 19, and the second gear 15 meshes with the upper gear 8 of the double-layer gear. An electric drill connection port 9 is also disposed on the second wheel shaft 19 for facilitating connection with an electric drill. In an embodiment of the present utility model, the electric lifting and lowering device further includes a third wheel shaft 13. A one-way ratchet 12 is disposed on the third wheel shaft 13, and the one-way ratchet 12 meshes with the first gear 14. In an embodiment of the present utility model, the electric lifting and lowering device further includes a rope winding wheel 7. The rope winding wheel 7 is disposed on the first wheel shaft 11 and is located below the base 1. When the electric lifting and lowering device needs to work, rotate the handle body 2 by 180°, so that the cam 5 contacts the steering shaft 25 to drive the steering shaft 25 to move along the chute 24, thereby offsetting the gearbox 3 and the base 1, separating the pressure wheel (not shown in the figure) from the rope, achieving the effect of rope release. The electric drill drives the second gear 15 to rotate, and then drives the upper gear 8 and the lower gear 16 to rotate. The lower gear 16 drives the second gear 15 to rotate, and then drives the rope winding wheel 7 to rotate, realizing slow descent. Due to the action of the one-way ratchet 12, the second gear 15 can be prevented from reversing. If the electric lifting and lowering device does not work, reset the handle, and at the same time, the gearbox 3 and the base 1 are reset, and the pressure wheel presses the rope tightly, achieving the effect of locking the rope.
[0032] In summary, the present utility model provides an electric lifting and lowering device. When the electric drill reverses due to misoperation, under the action of the one-way mechanism, the double-layer gear set will stop rotating, effectively avoiding the safety accident of the user's wrist sprain caused by the reverse use of the pistol drill. When the rope rapidly falls and the rope winding wheel rotates rapidly, the conical pin slides outwards under the action of centrifugal force and thus gets stuck with the boss, stopping the rotation of the first wheel shaft, so that the anti-falling function of the electric lifting and lowering device can be achieved, effectively protecting the life and property safety of the user and eliminating potential safety hazards.
[0033] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art of this industry 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 principle 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 present utility model claimed.
Claims
1. An electric lifting and lowering device, the electric lifting and lowering device comprising a gearbox, a rear cover and a base, the rear cover being disposed on one side of the gearbox, the base being disposed on the other side of the gearbox, characterized in that, The electric lifting and lowering device further includes an anti-falling mechanism and a double-layer gear set. The anti-falling mechanism is arranged on the base, and the anti-falling mechanism penetrates through the gear box. The double-layer gear set is arranged on the base and located inside the gear box, and the double-layer gear set meshes with the anti-falling mechanism; Wherein, the anti-falling mechanism includes a first wheel shaft arranged on the base. An anti-falling cover is arranged on the first wheel shaft. The anti-falling cover is located outside the rear cover. A taper pin is movably installed inside the first wheel shaft. A magnet is arranged at one end of the taper pin. A boss is also arranged on the anti-falling cover; Wherein, a one-way mechanism is arranged inside the double-layer gear set.
2. The electric lifting and lowering device according to claim 1, characterized in that, The anti-falling mechanism further includes a first gear arranged on the first wheel shaft, and the first gear is located inside the gear box.
3. The electric lifting and lowering device according to claim 1, characterized in that, The one-way mechanism includes a track groove arranged inside the double-layer gear set and a limit shaft that can move along the track groove. The one-way mechanism further includes a spring. One end of the spring is connected to the end of the track groove, and the other end of the spring is connected to the limit shaft.
4. The electric lifting and lowering device according to claim 1, characterized in that, The electric lifting and lowering device further includes a second wheel shaft arranged on the base, and a second gear is arranged on the second wheel shaft. The second gear meshes with the upper-layer gear of the double-layer gear set.
5. The electric lifting and lowering device according to claim 2, wherein, The electric lifting and lowering device further includes a third wheel shaft. A one-way ratchet is arranged on the third wheel shaft. The one-way ratchet meshes with the first gear.
6. The electric lifting and lowering device according to claim 1, characterized in that, The electric lifting and lowering device further includes a rope winding wheel arranged on the first wheel shaft, and the rope winding wheel is located below the base.
7. The electric lifting and lowering device according to claim 1, characterized in that The electric lifting and lowering device further includes a handle arranged on the base, and the handle is located on one side of the gear box.