A fall arrest device for an elevator

Abstract

The application discloses an anti-falling device for an elevator, and relates to the technical field of elevators, which comprises a base, a dust cleaning device, a supporting device and a first fixed frame. The dust cleaning device can clean the dust and residual residues on the outer surface of the elevator roller when the elevator roller drives the cable to ascend, thereby preventing the cable from being damaged due to the friction between the cable and the residual residues on the outer surface of the elevator roller during movement. The supporting device can support and fix the device on the inner wall of the elevator shaft, and can pull the elevator cable when the elevator rapidly falls, thereby preventing the elevator from rapidly falling when the elevator suddenly falls.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, specifically to an anti-fall device for elevators. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building, with its car moving between at least two rigid guide rails perpendicular to the horizontal plane or at an angle of inclination less than 15° to the vertical. There are also escalators, where steps are mounted on a continuous track and run; these are commonly known as moving walkways or automatic stairs. They are fixed lifting devices serving designated floors. A vertical elevator has a car that runs between at least two rigid guide rails that are vertical or at an angle of inclination less than 15°. The size and structure of the car facilitate passenger entry and exit or loading and unloading of goods. Conventionally, regardless of its drive method, elevator is used as a general term for vertical transportation tools within a building. During the operation of a car elevator, there is a risk of the elevator falling due to the long period of use; and most of the methods on the market to prevent elevator falls are to use regular maintenance, which cannot prevent the elevator from falling when it is falling. Summary of the Invention

[0003] To achieve the above objectives, the present invention provides the following technical solution: a fall protection device for elevators, comprising a base; The fall protection device for elevators also includes: A dust removal device is provided, comprising a first fixed frame and an arc-shaped scraper. The first fixed frame is fixedly connected to the upper surface of the base, and the arc-shaped scraper is rotatably connected to the first fixed frame. By setting up the dust removal device, the dust and residual residue on the outer surface of the elevator roller can be cleaned when the elevator roller drives the cable to rise, thereby preventing the cable from being damaged by friction with the residue on the outer surface of the elevator roller during the movement. The arc-shaped scraper is then used to contact the outer surface of the elevator roller for dust removal. The support device can be fixed in the inner wall of the elevator shaft and can pull the elevator cable when the elevator falls rapidly, thereby preventing the elevator from falling. The support device includes a fixing plate, which is circular in shape and is fixedly connected to the side surface of the base so that the support device is connected to the side surface of the base. A track frame is fixedly connected to the outer surface of the fixed plate at the end away from the base. A connecting device is fixedly connected to the upper surface of the track frame. By setting the connecting device, the cable between the two elevator rollers can be limited. When the device falls, it pulls the cable between the elevator rollers, thereby jamming the cable and preventing the elevator from falling. The connecting device includes a block, which is fixedly connected to the upper surface of the track frame. A right-angle rod is fixedly connected to the upper surface of the block. A wrapping plate is fixedly connected to the end of the right-angle rod away from the block. A ring is fixedly connected to the outer surface of the wrapping plate on the side away from the right-angle rod. The ring can limit the cable. When the elevator suddenly falls, the ring pulls the cable to prevent the elevator from falling. A cable straightening device is provided to connect the device to the elevator cable, thereby preventing the cable from deviating during elevator ascent and descent and lubricating the outer surface of the cable. The cable straightening device includes two wrapping plates, and several soft pads are fixedly connected to the inner walls of both wrapping plates. The soft pads are evenly distributed, and a carbon plate is fixedly connected to the outer surface of the soft pads away from the wrapping plates. When the cable moves, it comes into contact with the outer surface of the carbon plate. During the contact process, the carbon particles in the carbon plate will fall off due to friction and then adhere to the outer surface of the cable, thereby lubricating the outer surface of the cable.

[0004] Preferably, a first curved rod is fixedly connected to the outer surface of the first fixed frame. The first curved rod is U-shaped. A rotating block is rotatably connected to the outer surface of the first curved rod. An arc-shaped scraper is fixedly connected to the outer surface of the rotating block. A support rod is fixedly connected to the side surface of the first fixed frame. The rotating block allows the arc-shaped scraper to change its angle, thereby bringing it into contact with the outer surface of the elevator lifting roller. This achieves the effect of scraping off dust and debris from the outer surface of the elevator lifting roller. A spring is fixedly connected to the end of the support rod away from the first fixed frame. The spring compresses the rotating block, causing the arc-shaped scraper to press tightly against the outer surface of the elevator lifting roller. A triangular block is fixedly connected to the end of the spring away from the support rod, and the triangular block is fixedly connected to the lower surface of the rotating block.

[0005] Preferably, a fracture plate is fixedly connected to the outer surface of the track frame. The number of fracture plates is several, and they are evenly distributed. The fracture plates can break when the elevator falls, causing the first threaded ring to move within the inner cavity of the track frame. The first threaded ring is slidably connected to the inner wall of the track frame. A limit block is fixedly connected to the outer surface of the first threaded ring. The limit block is pressed and adapted to the fracture plate, allowing it to be compressed and thus break. A first threaded rod is threadedly connected to the inner cavity of the first threaded ring. A rotating ring is fixedly connected to one end of the first threaded rod near the inner cavity of the track frame. The first threaded rod and rotating ring allow adjustment of the distance between the trapezoidal plate and the inner wall of the elevator shaft when the device is installed in the elevator shaft, thus tightly fixing the device to the inner wall of the elevator shaft. A limit ball is fixedly connected to the end of the first threaded rod away from the rotating ring.

[0006] Preferably, a limiting sleeve is rotatably connected to the outer surface of the limiting ball, and a trapezoidal plate is fixedly connected to the end of the outer surface of the limiting sleeve away from the limiting ball. An anti-slip pad is fixedly connected to the side of the outer surface of the trapezoidal plate away from the limiting sleeve. The setting of the limiting ball and the limiting sleeve can prevent the trapezoidal plate from rotating when the first threaded rod rotates.

[0007] Preferably, the cable guiding device further includes a second fixing frame, which is fixedly connected to the side surface of the base. A connecting block is fixedly connected to the inner cavity of the second fixing frame. A limiting rod is fixedly connected to the side of the connecting block away from the second fixing frame. The outer surface of the limiting rod is rotatably connected to the wrapping plate. The wrapping plate can wrap the cable and contact the outer surface of the carbon plate when the cable moves, thereby making the outer surface of the cable smooth. A square plate is fixedly connected to the end of the wrapping plate away from the limiting rod. Air cushions are fixedly connected to the upper and lower ends of the outer surface of the square plate away from the wrapping plate. A clamping device is fixedly connected to the outer surface of the wrapping plate. By setting the clamping device, the two wrapping plates can be clamped, so that the wrapping plate can wrap the outer surface of the cable. The clamping device includes an arc plate, which is fixedly connected to the outer surface of the wrapping plate. A limiting ring is fixedly connected to the end of the arc plate.

[0008] Preferably, a second bent rod is movably connected to the inner cavity of the limiting ring. The second bent rod is U-shaped, and a second threaded ring is fixedly connected to the end of the second bent rod. A second threaded rod is threadedly connected to the inner cavity of the second threaded ring. The arrangement of the second threaded ring and the second threaded rod allows the two wrapping plates to be tightly connected together. A straight rod is fixedly connected to the outer surface of the end of the second threaded rod, and a compression ring is fixedly connected to the end of the straight rod. The compression ring is compression-fitted to the outer surface of the limiting ring.

[0009] This invention provides a fall protection device for elevators. It has the following advantages: I. This fall protection device for elevators, by setting up a dust removal device, can clean the dust and residual residue on the outer surface of the elevator rollers when the elevator rollers drive the cable upward, thereby preventing the cable from being damaged by friction with the residue on the outer surface of the elevator rollers during the movement.

[0010] Second, the fall protection device for elevators can be fixed in the inner wall of the elevator shaft by setting a support device, and can pull the elevator cable when the elevator falls rapidly, thereby preventing the elevator from falling.

[0011] Third, the fall protection device for elevators can be connected to the elevator cable by setting a cable guide device, thereby preventing the cable from deviating during the elevator's ascent and descent and making the outer surface of the cable smooth.

[0012] IV. This anti-fall device for elevators, by setting a connecting device, can limit the cable between two elevator rollers, and when the device falls, it pulls the cable between the elevator rollers, thereby jamming the cable and preventing the elevator from falling. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of an anti-fall device for elevators according to the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the dust removal device of the present invention; Figure 4 This is a schematic diagram of the connecting device structure of the present invention; Figure 5 This is a schematic diagram of the support device structure of the present invention; Figure 6 This is a partial structural diagram of the support device of the present invention; Figure 7 This is a schematic diagram of the alignment device of the present invention; Figure 8 This is a schematic diagram of the disassembly structure of the line-following device of the present invention.

[0014] In the diagram: 1. Base; 2. Dust removal device; 3. Connecting device; 4. Support device; 5. Line guiding device; 21. First fixed frame; 22. First bent rod; 23. Rotating block; 24. Arc-shaped scraper; 25. Support rod; 26. Spring; 27. Triangular block; 31. Square block; 32. Right-angle rod; 33. Wrapping plate; 34. Ring; 41. Fixed plate; 42. Track frame; 43. First threaded ring; 44. Fracture plate; 45. Limiting block; 46. First threaded rod ; 47. Rotating ring; 48. Limiting ball; 49. Limiting sleeve; 410. Trapezoidal plate; 411. Anti-slip mat; 51. Second fixing frame; 52. Connecting block; 53. Limiting rod; 54. Wrapping plate; 55. Clamping device; 56. Square plate; 57. Air cushion; 58. Soft pad; 59. Carbon plate; 551. Arc plate; 552. Limiting ring; 553. Second bent rod; 554. Second threaded ring; 555. Second threaded rod; 556. Straight rod; 557. Compression ring. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0016] First embodiment, such as Figures 1-3 As shown, the present invention provides a technical solution: a fall protection device for elevators, including a base 1; The dust removal device 2 is used to clean the dust and residual residue on the outer surface of the elevator rollers when the elevator rollers drive the cable upwards. This prevents the cable from being damaged by friction with the residue on the outer surface of the elevator rollers during movement. The dust removal device 2 includes a first fixed frame 21 and an arc-shaped scraper 24. The arc-shaped scraper 24 is rotatably connected to the first fixed frame 21 so that the arc-shaped scraper 24 contacts the outer surface of the elevator rollers for dust removal. The support device 4 can be fixed in the inner wall of the elevator shaft and can pull the elevator cable when the elevator falls rapidly, thereby preventing the elevator from falling. The support device 4 includes a fixing plate 41, which is fixedly connected to the side surface of the base 1 so that the support device 4 is connected to the side surface of the base 1. A track frame 42 is fixedly connected to the end of the outer surface of the fixing plate 41 away from the base 1. A connecting device 3 is fixedly connected to the upper surface of the track frame 42. By setting the connecting device 3, the cable between the two elevator rollers can be limited. When the device falls, it pulls the cable between the elevator rollers, thereby jamming the cable and preventing the elevator from falling. The connecting device 3 includes a block 31, which is fixedly connected to the upper surface of the track frame 42. A right-angle rod 32 is fixedly connected to the upper surface of the block 31. The right-angle rod 32 is located away from the block 31. One end of the elevator is fixedly connected to a wrapping plate 33. A ring 34 is fixedly connected to the outer surface of the wrapping plate 33 away from the right-angle rod 32. The ring 34 can limit the cable. When the elevator suddenly falls, the ring 34 pulls the cable to prevent the elevator from falling. In use, when the elevator is running normally, the cable moves in the inner circle of the ring 34, which can prevent the cable from falling and contacting the roller. When the elevator suddenly falls, the ring 34 will pull the cable, thereby locking the cable and preventing the elevator from falling. The cable straightening device 5 connects to the elevator cable, preventing cable deviation during elevator ascent and descent and lubricating the cable's outer surface. The device includes two wrapping plates 54, each with a soft pad 58 fixedly attached to its inner wall. These soft pads 58 are evenly distributed. A carbon plate 59 is fixedly attached to the outer surface of each soft pad 58 away from the wrapping plate 54, allowing the cable to contact the outer surface of the carbon plate 59 during movement. During this contact, carbon particles in the carbon plate 59 detach due to friction and adhere to the cable's outer surface, thus lubricating it.

[0017] The first fixed frame 21 is fixedly connected to the upper surface of the base 1. A first bent rod 22 is fixedly connected to the outer surface of the first fixed frame 21. A rotating block 23 is rotatably connected to the outer surface of the first bent rod 22. An arc-shaped scraper 24 is fixedly connected to the outer surface of the rotating block 23. A support rod 25 is fixedly connected to the side surface of the first fixed frame 21. The rotating block 23 allows the arc-shaped scraper 24 to change its angle, thereby causing the arc-shaped scraper 24 to contact the outer surface of the elevator lifting roller, thus achieving the effect of scraping off dust and debris from the outer surface of the elevator lifting roller. The support rod 25... A spring 26 is fixedly connected to the end away from the first fixed frame 21. The spring 26 can compress the rotating block 23, so that the arc-shaped scraper 24 is pressed tightly against the outer surface of the elevator lifting roller. A triangular block 27 is fixedly connected to the end of the spring 26 away from the support rod 25. The triangular block 27 is fixedly connected to the lower surface of the rotating block 23. In use, under the influence of the elastic potential energy of the spring 26, the rotating block 23 will rotate on the outer surface of the first curved rod 22, so that the arc-shaped scraper 24 contacts the outer surface of the elevator lifting roller, thereby scraping off the dust and debris on the outer surface of the elevator lifting roller.

[0018] Second embodiment, such as Figures 4-6As shown, a fracture plate 44 is fixedly connected to the outer surface of the track frame 42. Several fracture plates 44 are evenly distributed. The fracture plates 44 are designed to break when the elevator descends, causing the first threaded ring 43 to move within the inner cavity of the track frame 42. The first threaded ring 43 is slidably connected to the inner wall of the track frame 42. A limiting block 45 is fixedly connected to the outer surface of the first threaded ring 43. The limiting block 45 is pressed and adapted to the fracture plate 44, allowing it to compress and break the fracture plate 44. A first threaded rod 46 is threadedly connected to the inner cavity of the first threaded ring 43. A rotating ring 47 is fixedly connected to one end of the first threaded rod 46 near the inner cavity of the track frame 42. The first threaded rod 46 and the rotating ring 47 allow adjustment of the distance between the trapezoidal plate 410 and the inner wall of the elevator shaft when the device is installed in the elevator shaft, thus ensuring the device is tightly fixed to the inner wall of the elevator shaft. A limiting ball 48 is fixedly connected to the end of a threaded rod 46 away from the rotating ring 47. A limiting sleeve 49 is rotatably connected to the outer surface of the limiting ball 48. A trapezoidal plate 410 is fixedly connected to the outer surface of the limiting sleeve 49 away from the limiting ball 48. An anti-slip pad 411 is fixedly connected to the outer surface of the trapezoidal plate 410 away from the limiting sleeve 49. The limiting ball 48 and the limiting sleeve 49 are designed to prevent the trapezoidal plate 410 from rotating when the first threaded rod 46 rotates. During use, the operator... The device is placed on the inner wall of the elevator shaft. By rotating the rotating ring 47, the first threaded rod 46 drives the limiting sleeve 49 and the trapezoidal plate 410 to move towards the inner wall of the elevator shaft, thereby fixing the device in the elevator shaft. When the elevator falls, the cable will pull the guiding device 5. Under the action of the tension, the limiting block 45 squeezes the fracture plate 44, thereby causing the fracture plate 44 to break. Then the first threaded ring 43 moves in the inner cavity of the track frame 42, finally making the trapezoidal plate 410 no longer in contact with the elevator shaft.

[0019] The fall arrestor for elevators, through the setting of the fracture plate 44, can break when the elevator falls, thereby causing the first threaded ring 46 to move in the inner cavity of the track frame 42. The setting of the limiting block 45 can squeeze the fracture plate 44, thereby causing the fracture plate 44 to break. The setting of the first threaded rod 46 and the rotating ring 47 can adjust the distance between the trapezoidal plate 410 and the inner wall of the elevator shaft when the device is installed in the elevator shaft, thereby making the device tightly fixed to the inner wall of the elevator shaft.

[0020] The third embodiment, such as Figures 7-8As shown, the cable guiding device 5 also includes a second fixing frame 51, which is fixedly connected to the side surface of the base 1. A connecting block 52 is fixedly connected to the inner cavity of the second fixing frame 51. A limiting rod 53 is fixedly connected to the side of the connecting block 52 away from the second fixing frame 51. The outer surface of the limiting rod 53 is rotatably connected to the wrapping plate 54. The wrapping plate 54 can wrap the cable and contact the outer surface of the carbon plate 59 when the cable moves, thereby making the outer surface of the cable smooth. A square plate 56 is fixedly connected to the end of the wrapping plate 54 away from the limiting rod 53. Air cushions 57 are fixedly connected to the upper and lower ends of the outer surface of the square plate 56 away from the wrapping plate 54. A clamping device 55 is fixedly connected to the outer surface of the wrapping plate 54. By setting the clamping device 55, the two wrapping plates 54 can be clamped, so that the wrapping plate 54 can wrap the outer surface of the cable. The clamping device 55 includes an arc plate 551, which is fixedly connected to the outer surface of the cable. Attached to the outer surface of the wrapping plate 54, a limiting ring 552 is fixedly connected to the end of the arc-shaped plate 551. A second bent rod 553 is movably connected to the inner cavity of the limiting ring 552. A second threaded ring 554 is fixedly connected to the end of the second bent rod 553. A second threaded rod 555 is threadedly connected to the inner cavity of the second threaded ring 554. The arrangement of the second threaded ring 554 and the second threaded rod 555 allows the two wrapping plates 54 to be tightly connected together. The outer end of the second threaded rod 555... A straight rod 556 is fixedly connected to the surface, and a compression ring 557 is fixedly connected to the end of the straight rod 556. The compression ring 557 is squeezed and adapted to the outer surface of the limiting ring 552. When using the device, the operator puts the two wrapping plates 54 on the outer surface of the cable, then inserts the second threaded ring 554 into the inner cavity of the limiting ring 552, and rotates the second threaded rod 555, so that the compression ring 557 squeezes the limiting ring 552 to achieve the clamping work of the wrapping plate 54.

[0021] In use, the operator places the device on the inner wall of the elevator shaft. By rotating the rotating ring 47, the first threaded rod 46 drives the limiting sleeve 49 and the trapezoidal plate 410 to move towards the inner wall of the elevator shaft, thereby fixing the device in the elevator shaft. When the elevator falls, the cable will pull the guiding device 5. Under the action of the tension, the limiting block 45 squeezes the fracture plate 44, thereby causing the fracture plate 44 to break. After that, the first threaded ring 43 moves in the inner cavity of the track frame 42, and finally the trapezoidal plate 410 no longer contacts the elevator shaft. When the operator installs the device, he puts the two wrapping plates 54 on the outer surface of the cable, then inserts the second threaded ring 554 into the inner cavity of the limiting ring 552, and rotates the second threaded rod 555, so that the compression ring 557 compresses the limiting ring 552 to achieve the clamping work of the wrapping plate 54. Under the influence of the elastic potential energy of the spring 26, the rotating block 23 will rotate on the outer surface of the first curved rod 22, so that the arc-shaped scraper 24 contacts the outer surface of the elevator lifting roller, thereby scraping off the dust and debris on the outer surface of the elevator lifting roller. When the elevator is running normally, the cable moves in the inner circle of the ring 34, which can prevent the cable from falling and coming into contact with the roller. When the elevator suddenly falls, the ring 34 will pull the cable, thereby locking the cable and preventing the elevator from falling.

[0022] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A fall arrestor for elevators, comprising a base, characterized in that: The fall protection device for elevators also includes: A dust removal device, comprising a first fixed frame and an arc-shaped scraper, wherein the first fixed frame is fixedly connected to the upper surface of the base, and the arc-shaped scraper is rotatably connected to the first fixed frame so that the arc-shaped scraper contacts the outer surface of the elevator roller for dust removal. A support device, the support device including a fixing plate, the fixing plate being fixedly connected to the side surface of the base so that the support device is connected to the side surface of the base; A track frame is fixedly connected to the outer surface of the fixed plate away from the base. A connecting device is fixedly connected to the upper surface of the track frame. The connecting device includes a block, which is fixedly connected to the upper surface of the track frame. A right-angle rod is fixedly connected to the upper surface of the block. A wrapping plate is fixedly connected to the end of the right-angle rod away from the block. A ring is fixedly connected to the outer surface of the wrapping plate away from the right-angle rod, so that the ring limits the cable. When the elevator suddenly falls, the ring pulls the cable to prevent the elevator from falling. A cable guiding device includes two wrapping plates, and each of the two wrapping plates has a soft pad fixedly connected to its inner wall. The soft pads are evenly distributed, and a carbon plate is fixedly connected to the outer surface of the soft pad away from the wrapping plate, so that when the cable moves, it comes into contact with the outer surface of the carbon plate, thereby making the outer surface of the cable smooth.

2. The fall arrest device for elevators according to claim 1, characterized in that: A first bent rod is fixedly connected to the outer surface of the first fixed frame. A rotating block is rotatably connected to the outer surface of the first bent rod. An arc-shaped scraper is fixedly connected to the outer surface of the rotating block. A support rod is fixedly connected to the side surface of the first fixed frame. A spring is fixedly connected to the end of the support rod away from the first fixed frame. A triangular block is fixedly connected to the end of the spring away from the support rod. The triangular block is fixedly connected to the lower surface of the rotating block.

3. A fall arrestor for an elevator according to claim 1, characterized in that: A fracture plate is fixedly connected to the outer surface of the track frame. There are several fracture plates, and they are evenly distributed. A first threaded ring is slidably connected to the inner wall of the track frame. A limit block is fixedly connected to the outer surface of the first threaded ring. The limit block is squeezed and adapted to the fracture plate. A first threaded rod is threadedly connected to the inner cavity of the first threaded ring. A rotating ring is fixedly connected to the end of the first threaded rod near the inner cavity of the track frame. A limit ball is fixedly connected to the end of the first threaded rod away from the rotating ring.

4. A fall arrestor for an elevator according to claim 3, characterized in that: The outer surface of the limiting ball is rotatably connected to a limiting sleeve. A trapezoidal plate is fixedly connected to the outer surface of the limiting sleeve away from the limiting ball, and an anti-slip pad is fixedly connected to the outer surface of the trapezoidal plate away from the limiting sleeve.

5. A fall arrestor for an elevator according to claim 1, characterized in that: The alignment device further includes a second fixing frame, which is fixedly connected to the side surface of the base. A connecting block is fixedly connected to the inner cavity of the second fixing frame. A limiting rod is fixedly connected to the side of the connecting block away from the second fixing frame. The outer surface of the limiting rod is rotatably connected to the wrapping plate. A square plate is fixedly connected to the end of the wrapping plate away from the limiting rod. Air cushions are fixedly connected to both the upper and lower ends of the outer surface of the square plate away from the wrapping plate. A clamping device is fixedly connected to the outer surface of the wrapping plate. The clamping device includes an arc-shaped plate, which is fixedly connected to the outer surface of the wrapping plate. A limiting ring is fixedly connected to the end of the arc-shaped plate.

6. A fall arrestor for an elevator according to claim 5, characterized in that: A second bent rod is movably connected to the inner cavity of the limiting ring. A second threaded ring is fixedly connected to the end of the second bent rod. A second threaded rod is threadedly connected to the inner cavity of the second threaded ring. A straight rod is fixedly connected to the outer surface of the end of the second threaded rod. A compression ring is fixedly connected to the end of the straight rod. The compression ring is compressively fitted to the outer surface of the limiting ring.

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