High-strength anti-falling safety device suitable for freight elevator
By introducing anti-fall safety devices such as leaf springs, U-rings, rotating blocks and dampers into the cargo elevator, the problem of rapid drop caused by wear of the traction device is solved, and the elevator is safe locked and cargo protection is achieved.
Patent Information
- Application Number
- CN202422790173.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-15
AI Technical Summary
The traction devices of existing cargo elevators are prone to wear and tear after long-term use and not timely repair, resulting in failure or breakage, which leads to safety hazards of rapid drop of the elevator.
A high-strength anti-fall safety device including leaf springs, U-rings, rotating blocks, limit blocks and dampers is designed. The elastic force recovery of the leaf spring and the mechanical attachment of the rotating blocks are used to realize the automatic locking of the elevator. Combined with the damper and buffer spring to absorb impact forces, prevent rapid falls and protect goods.
When the elevator steel rope breaks, the elevator will be automatically locked to prevent rapid falls, protect the safety of goods and personnel, and absorb the impact force generated by the displacement of goods to reduce damage.
Smart Images
Figure CN223254655U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anti-falling of freight elevators, in particular to a high-strength anti-falling safety device suitable for freight elevators. Background Art
[0002] Freight elevators are elevators designed specifically for transporting goods. They have a high load-bearing capacity and space volume to meet the handling needs of different locations. They are usually used in warehouses, factories, supermarkets, logistics centers and other places where goods need to be frequently transported up and down.
[0003] When existing freight elevators are in use, due to long-term use of the freight elevators and long periods of time without maintenance by workers, the traction device of the elevator is easily worn out, causing the traction device to fail or break, which makes the elevator prone to rapid falling and thus prone to safety accidents. Utility Model Content
[0004] In order to make up for the above shortcomings, the utility model provides a high-strength anti-fall safety device suitable for freight elevators, aiming to improve the problem in the prior art that due to the long-term use of freight elevators and the long-term lack of maintenance by workers, the traction device of the elevator is easily worn, causing the traction device to fail and break, thereby causing the elevator to easily fall rapidly.
[0005] To achieve the above objectives, the present invention provides the following technical solutions:
[0006] A high-strength anti-fall safety device suitable for a freight elevator comprises an elevator shaft, a transverse plate fixedly connected to the top of the elevator shaft, a traction assembly provided on the upper portion of the transverse plate, a car provided in the middle of the elevator shaft, an anti-fall assembly provided on the top of the car, protective assemblies provided on both sides of the car, and an elevator door installed on the outside of the car;
[0007] The anti-fall component includes a leaf spring, which is fixedly connected to the inner top of the car, a U-shaped ring is fixedly connected to the middle of the leaf spring, and fixed frames are fixedly connected to both sides of the inner top of the car. Rotating blocks are rotatably connected inside the two fixed frames, and the tops of the two rotating blocks are fixedly connected to the lower sides of the U-shaped ring.
[0008] Furthermore, the protective component includes a damper, which is fixedly connected to both sides of the interior of the car, and the output end of the damper is fixedly connected to a protective plate. Fixed rods are fixedly connected to both sides of the interior of the car, and sliders are slidably connected to both sides of the exterior of the two fixed rods. One end of the buffer plate is rotatably connected to the interior of multiple sliders, and the other ends of the multiple buffer plates are rotatably connected to the outside of the protective plate. Buffer springs are sleeved on both sides of the exterior of the two fixed rods.
[0009] Furthermore, the traction assembly includes a mounting plate, which is fixedly connected to both sides of the upper part of the horizontal plate. A motor is provided on the outside of the left mounting plate, and a winding drum is fixedly connected to the output end of the motor. A steel rope is wound around the outside of the winding drum, and the top of the steel rope is fixedly connected to the outside of the U-shaped ring.
[0010] Furthermore, first through holes are opened and closed on both sides of the interior of the car, and the bottoms of the two rotating blocks are slidably connected to the interiors of the two first through holes.
[0011] Furthermore, limit blocks are fixedly connected to both sides of the interior of the elevator shaft, and sawtooth grooves are provided on the outside of the two limit blocks.
[0012] Furthermore, a protective pad is provided on the outside of the protective plate, and the material of the protective pad is rubber.
[0013] Furthermore, a second through hole is opened in the top of the car, and the steel rope passes through the inside of the second through hole.
[0014] Furthermore, a mounting ring is fixedly connected to the outside of the mounting plate on the left side, and the motor is fixedly connected to the inside of the mounting ring.
[0015] The utility model has the following beneficial effects:
[0016] 1. In the utility model, when the elevator traction rope breaks, the rope releases the tension on the leaf spring, the leaf spring returns to its original shape and pushes the U-shaped ring downward. The U-shaped ring drives the rotating blocks on both sides to rotate in the fixed frame, so that the bottom of the rotating block passes through the first through hole and is stuck in the serrated groove of the limit block, preventing the elevator car from falling rapidly, thereby ensuring safety.
[0017] 2. In the utility model, when the cargo is displaced in the car, it first acts on the protective pad, which transfers the force to the protective plate and drives the damper to contract. At the same time, the protective plate drives the buffer plate to move around, causing the connected slider to slide on the fixed rod, compressing the buffer spring outside the fixed rod and causing deformation, thereby absorbing the force generated by the movement of the cargo, protecting the cargo and reducing damage. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a three-dimensional diagram of a high-strength anti-fall safety device suitable for freight elevators proposed by the utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure of a car of a high-strength anti-fall safety device suitable for a freight elevator proposed in the utility model;
[0020] Figure 3This is a schematic diagram of the protective pad structure of a high-strength anti-fall safety device suitable for freight elevators proposed in the utility model;
[0021] Figure 4 This is a schematic diagram of the damper structure of a high-strength anti-fall safety device suitable for freight elevators proposed in the utility model;
[0022] Figure 5 for Figure 2 A magnified view of the structure at center A;
[0023] Figure 6 for Figure 4 A magnified view of the structure at B in the middle.
[0024] Legend:
[0025] 1. Elevator shaft; 2. Cross plate; 3. Mounting plate; 4. Mounting ring; 5. Motor; 6. Cable reel; 7. Steel rope; 8. Car; 9. Elevator door; 10. Limit block; 11. U-shaped ring; 12. Leaf spring; 13. Fixed bracket; 14. Rotating block; 15. First through hole; 16. Fixed rod; 17. Slider; 18. Buffer plate; 19. Protective plate; 20. Protective pad; 21. Damper; 22. Second through hole; 23. Buffer spring. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0027] Reference Figure 1 、 Figure 2 and Figure 5 The utility model provides an embodiment: a high-strength anti-fall safety device suitable for a freight elevator, comprising an elevator shaft 1, a transverse plate 2 fixedly connected to the top of the elevator shaft 1, a traction assembly provided on the upper part of the transverse plate 2, the traction assembly being provided to facilitate the movement of the car 8, a car 8 being provided in the middle of the elevator shaft 1, the car 8 being provided to facilitate the placement of goods, an anti-fall assembly being provided on the top of the car 8, the anti-fall assembly being provided to prevent the car 8 from falling rapidly, protective assemblies being provided on both sides of the interior of the car 8, the protective assemblies being provided to facilitate the protection of the goods inside the car 8, an elevator door 9 being installed on the outside of the car 8, the elevator door 9 being provided to facilitate the closure of the car 8;
[0028] The anti-fall component includes a leaf spring 12, which is fixedly connected to the inner top of the car 8. The leaf spring 12 is in a pre-tightened state under normal conditions. When the elevator rope 7 breaks or loses support, the elastic force of the leaf spring 12 is released, pushing the anti-fall component to quickly enter the working state, thereby achieving rapid locking to prevent the car 8 from falling. A U-shaped ring 11 is fixedly connected to the middle of the leaf spring 12, and both sides of the top of the car 8 are fixedly connected to a fixing frame 13. The two fixing frames 13 are rotatably connected to a rotating block 14. The setting of the fixing frame 13 facilitates the installation of the rotating block 14. The two rotating blocks 14 are on top. The two ends of the two rotating blocks 14 are slidably connected to the inside of the two first through holes 15. The first through holes 15 are provided to facilitate the movement of the rotating blocks 14. The limit blocks 10 are fixedly connected to both sides of the interior of the elevator shaft 1. The two limit blocks 10 are provided with serrated grooves on the outside. The serrated grooves on the limit blocks 10 provide a fixed point for the rotating blocks 14 to mechanically position. When the anti-fall component is activated, the rotating blocks 14 will be stuck in the serrated grooves to achieve rigid locking of the elevator car 8 and prevent the car 8 from falling.
[0029] Specifically, when the steel rope 7 in the traction assembly of the elevator breaks, the steel rope 7 loses the tension on the leaf spring 12. The leaf spring 12 that has lost the tension will immediately return to its original shape and push the U-shaped ring 11 downward. The downward movement of the U-shaped ring 11 drives the rotating blocks 14 fixed on both sides below it, causing the rotating blocks 14 to rotate inside the fixed frame 13. As the rotation proceeds, the bottoms of the two rotating blocks 14 gradually pass through the first through hole 15 on the fixed frame 13 and are smoothly engaged in the serrated groove provided on the outside of the limit block 10. This serrated groove structure provides multi-point locking. , so that the rotating block 14 can be firmly embedded in the card slot to achieve rigid locking. The advantage of this structural design is that the broken steel rope 7 triggers the movement of the leaf spring 12 and the rotating block 14, ensuring the automatic locking of the elevator at the moment the steel rope 7 breaks, preventing the car 8 from falling rapidly due to loss of traction. The serrated groove design further enhances the braking effect, so that the rotating block 14 can be firmly fixed on the limit block 10, even if it is impacted by the gravity of the cargo, it can ensure that the car 8 stops at the current position to avoid displacement or sliding, thereby effectively protecting the safety of cargo and personnel.
[0030] Reference Figure 4 and Figure 6The protective component includes a damper 21, which is fixedly connected to both sides of the interior of the car 8. The output end of the damper 21 is fixedly connected to a protective plate 19. By setting the protective plate 19, the cargo is protected. Fixed rods 16 are fixedly connected to both sides of the interior of the car 8. Sliders 17 are slidably connected to both sides of the exterior of the two fixed rods 16. One end of the buffer plate 18 is rotatably connected to the interior of multiple sliders 17, and the other ends of the multiple buffer plates 18 are rotatably connected to the outside of the protective plate 19. Buffer springs 23 are sleeved on both sides of the exterior of the two fixed rods 16, and a protective pad 20 is provided on the outside of the protective plate 19. The material of the protective pad 20 is rubber. The rubber protective pad 20 has good elasticity and shock absorption. When the cargo or elevator car 8 collides or shakes violently, the protective pad 20 can effectively absorb and disperse the impact force to avoid damage to the cargo or elevator structure due to direct impact on the protective plate 19.
[0031] Specifically, when cargo is placed inside the car 8 and displaced, force is first applied to the protective pad 20. The protective pad 20 absorbs part of the impact force through its flexibility and elasticity, and transmits the remaining force to the protective plate 19 on its rear side. Under the action of the force, the protective plate 19 begins to move backward and contract, driving the damper 21 fixed on its outside to contract synchronously. The damper 21 further buffers and absorbs the displacement force through resistance to reduce the direct impact caused by the displacement of the cargo. As the protective plate 19 contracts, the buffer plates 18 connected to the periphery of the protective plate 19 begin to move outward. The buffer plates 18 transmit force to the surrounding areas through a rotational connection, and at the same time drive the four sliders 17 connected to the other end to slide to both sides along the outside of the fixed rod 16. During the movement of the slider 17, the buffer spring 23 sleeved on the outside of the fixed rod 16 is squeezed, causing the buffer spring 23 to gradually be deformed under force. The deformation process of the buffer spring 23 can not only absorb the remaining energy generated by the displacement of the cargo, but also gradually dissipate the force through the rebound characteristics of the spring, thereby completing the comprehensive absorption of the impact force generated by the displacement of the cargo.
[0032] Reference Figure 1 、 Figure 3 and Figure 5 The traction assembly includes a mounting plate 3, which is fixedly connected to both sides of the upper part of the transverse plate 2. A motor 5 is provided on the outside of the left mounting plate 3, and a winding drum 6 is fixedly connected to the output end of the motor 5. A steel rope 7 is wound around the outside of the winding drum 6. The top of the steel rope 7 is fixedly connected to the outside of the U-shaped ring 11. A second through hole 22 is opened at the top of the car 8, and the steel rope 7 passes through the inside of the second through hole 22. The second through hole 22 is provided to facilitate the movement of the steel rope 7. A mounting ring 4 is fixedly connected to the outside of the left mounting plate 3, and the motor 5 is fixedly connected to the inside of the mounting ring 4. The motor 5 is conveniently fixed by providing the mounting ring 4.
[0033] Specifically, when the elevator rises, the motor 5 is started, and the motor 5 drives the winding drum 6 fixed at its output end to rotate. As the winding drum 6 rotates, the steel rope 7 wound on its outside begins to move, thereby driving the car 8 fixed at the bottom of the steel rope 7 to move upward, realizing the elevator's ascending process. Conversely, when the elevator needs to descend, the motor 5 rotates in the opposite direction, the winding drum 6 rotates in the opposite direction, and the steel rope 7 starts to move in the opposite direction, driving the car 8 to move downward. The reverse driving process of the motor 5 can smoothly control the elevator's descending speed, ensuring that the car 8 reaches the target position safely and smoothly.
[0034] Working principle: When the steel rope 7 of the elevator's traction assembly breaks, the steel rope 7 releases the tension on the leaf spring 12, and the leaf spring 12 returns to its original shape, while moving downward with the U-shaped ring 11. The U-shaped ring 11 moves and drives the two rotating blocks 14 fixed on both sides of the lower part to rotate inside the two fixed frames 13, so that the bottoms of the two rotating blocks 14 pass through the insides of the two first through holes 15 and are stuck in the insides of the serrated grooves opened on the outsides of the two limit blocks 10. When the steel rope 7 of the elevator's traction assembly breaks, the bottoms of the two rotating blocks 14 are stuck in the insides of the serrated grooves opened on the outsides of the two limit blocks 10 through the cooperation of the leaf spring 12 and the rotating blocks 14, preventing them from falling quickly and ensuring safety.
[0035] When the cargo placed inside the car 8 is displaced, the cargo will first apply force to the protective pad 20, and the protective pad 20 will transfer the force to the protective plate 19. The protective plate 19 will shrink with the damper 21 fixed on the external rear side. At the same time, when the protective plate 19 shrinks, it will move the buffer plate 18 connected to the external four sides to move around. When the buffer plate 18 moves around, it will move the four sliders 17 connected to the other end to move to both sides outside the two fixed rods 16. When the four sliders 17 move, they will squeeze the buffer springs 23 arranged around the outside of the two fixed rods 16, so that the four buffer springs 23 will be deformed under the force, and the force generated by the movement of the cargo can be absorbed, thereby facilitating the absorption of the force generated by the displacement of the cargo, protecting the cargo, and reducing damage to the cargo.
[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A high-strength anti-fall safety device suitable for a freight elevator, comprising an elevator shaft (1), characterized in that: The top of the elevator shaft (1) is fixedly connected to a transverse plate (2), the upper part of the transverse plate (2) is provided with a traction assembly, the middle part of the elevator shaft (1) is provided with a car (8), the top of the car (8) is provided with an anti-fall assembly, both sides of the interior of the car (8) are provided with protective assemblies, and the outside of the car (8) is provided with an elevator door (9); The anti-fall component comprises a leaf spring (12), wherein the leaf spring (12) is fixedly connected to the inner top of the car (8), a U-shaped ring (11) is fixedly connected to the middle of the leaf spring (12), fixed frames (13) are fixedly connected to both sides of the inner top of the car (8), and rotating blocks (14) are rotatably connected inside the two fixing frames (13), and the tops of the two rotating blocks (14) are fixedly connected to both sides of the lower part of the U-shaped ring (11).
2. A high-strength anti-fall safety device suitable for a freight elevator according to claim 1, characterized in that: The protective assembly includes a damper (21), the damper (21) is fixedly connected to both sides of the interior of the car (8), the output end of the damper (21) is fixedly connected to a protective plate (19), both sides of the interior of the car (8) are fixedly connected to fixed rods (16), both sides of the exterior of the two fixed rods (16) are slidably connected to sliders (17), the interiors of the plurality of sliders (17) are rotatably connected to one end of a buffer plate (18), the other ends of the plurality of buffer plates (18) are rotatably connected to the periphery of the exterior of the protective plate (19), and both sides of the exterior of the two fixed rods (16) are sleeved with buffer springs (23).
3. A high-strength anti-fall safety device suitable for a freight elevator according to claim 1, characterized in that: The traction assembly comprises a mounting plate (3), the mounting plate (3) being fixedly connected to both sides of the upper portion of the transverse plate (2), a motor (5) being provided on the outside of the left mounting plate (3), a winding drum (6) being fixedly connected to the output end of the motor (5), a steel rope (7) being wound around the outside of the winding drum (6), and a top of the steel rope (7) being fixedly connected to the outside of the U-shaped ring (11).
4. A high-strength anti-fall safety device suitable for a freight elevator according to claim 1, characterized in that: First through holes (15) are opened and closed on both sides of the interior of the car (8), and the bottoms of the two rotating blocks (14) are slidably connected inside the two first through holes (15).
5. The high-strength anti-falling safety device suitable for a freight elevator according to claim 1, characterized in that: Limit blocks (10) are fixedly connected to both sides of the interior of the elevator shaft (1), and sawtooth grooves are provided on the exteriors of the two limit blocks (10).
6. A high-strength anti-falling safety device suitable for a freight elevator according to claim 2, characterized in that: A protective pad (20) is provided outside the protective plate (19), and the material of the protective pad (20) is rubber.
7. The high-strength anti-falling safety device suitable for a freight elevator according to claim 3, characterized in that: A second through hole (22) is provided on the top of the car (8), and the steel rope (7) passes through the inside of the second through hole (22).
8. The high-strength anti-falling safety device suitable for a freight elevator according to claim 3, characterized in that: The outside of the left mounting plate (3) is fixedly connected to a mounting ring (4), and the motor (5) is fixedly connected to the inside of the mounting ring (4).
Citation Information
Cited By
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