Falling protector with rope body cleaning brush

Abstract

A falling protector with a rope body cleaning brush is provided with a shell, the shell is provided with an outlet, and a falling protector body and a speed reducer are arranged in the shell. A main shaft is fixed in a shell of the falling protector body and used for arranging a rotating hub, a volute spiral spring is connected between the main shaft and the rotating hub, a rope body is wound on the rotating hub, and a brake assembly is combined on one side of the rotating hub. The speed reducer is fixed in the shell and is configured to be jointed with the brake assembly when the rotating speed of the brake assembly exceeds a preset rotating speed; a brush unit with a plurality of radial bristles is fixed at the outlet, and one end of the rope body is in contact with the inner ends of the bristles when penetrating through the outlet; therefore, when the rope body is pulled out of the shell and then rolled back by the rotating hub, metal filings or dirt attached to the rope body can be cleaned through the bristles, the interior of the shell is kept clean, and the falling protector operates smoothly without being hindered.

Description

Technical Field

[0001] This utility model relates to the improvement of safety protection equipment; in particular, it relates to a fall arrestor with a rope cleaning brush. Background Technology

[0002] Existing fall arresters involve fixing the outer casing to one location and attaching one end of the rope, which extends out of the casing, to a harness worn by the person. When a person wearing the harness falls from the air, pulling the rope causes a hub inside the fall arrester to rotate rapidly. The hub's braking mechanism engages with a deceleration device fixed within the casing, preventing the hub from continuing to rotate and releasing the rope. This prevents the person from falling further, achieving a fall arrest safety effect.

[0003] For the aforementioned fall arresters to effectively prevent falls, the internal mechanical functions of the casing must operate without obstruction. However, during typical fall arrester use, the rope is frequently released from and retracted into the casing. During this retraction process, metal shavings or dirt from the environment can easily be brought back into the casing, affecting the operation of the internal machinery and creating safety hazards. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a fall arrestor, which is equipped with a device for cleaning the rope, to ensure the reliable mechanical action of the fall arrestor installed in the shell, and to make the fall arrestor safer to use.

[0005] To achieve the above objectives, this utility model provides a fall arrestor with a rope-based cleaning brush, comprising a housing, a fall arrestor body, a deceleration device, and a brush unit. The housing has an interior chamber, and one side of the housing has an outlet communicating with the chamber. The fall arrestor body includes a main shaft, a hub, a rope, and a braking assembly; the main shaft is fixed within the chamber; the hub is rotatably fitted around the main shaft, and one side of the hub has a mounting portion; one end of the rope is attached to the hub and wound around the hub in multiple turns, and the other end of the rope extends through the outlet; the braking assembly is attached to the mounting portion. The deceleration device is fixed within the chamber and configured to engage with the braking assembly. The brush unit includes a bristle base and a plurality of bristles; the bristle base is a ring and fixed at the outlet, the plurality of bristles are arranged radially and fixed at their outer ends to the bristle base; the rope passes through the inside of the bristle base, and the inner ends of the plurality of bristles contact the portion of the rope that passes through the outlet.

[0006] The advantage of this invention is that when the rope is pulled out of the housing by an external force from the outlet, the hub is pulled by the rope and rotates as the rope is released. When the external force pulling the rope disappears, the hub rotates in the opposite direction due to the restoring force of the spiral spring, winding the pulled-out rope back into the housing. During the process of the rope being wound back into the housing by the hub, since the brush unit is fixed at the outlet and the inner ends of the multiple bristles contact the periphery of the rope, the multiple bristles can clean the metal shavings or dirt adhering to the rope by brushing the surface of the rope. This prevents the fall arrestor from bringing dirt or metal shavings into the housing when retrieving the rope, keeping the housing clean. This ensures that the fall arrestor inside the housing operates without being hindered by dirt, reliably performing its fall-prevention function and improving the safety of the fall arrestor with rope cleaning brushes. Attached Figure Description

[0007] Figure 1 This is a perspective view of a preferred embodiment of the present invention.

[0008] Figure 2 This is an exploded view of the preferred embodiment of the present invention.

[0009] Figure 3 for Figure 2 A 3D view of the medium brush module.

[0010] Figure 4 for Figure 2 Exploded view of the medium brush module.

[0011] Figure 5 This is a top view of the preferred embodiment of the present invention.

[0012] Figure 6 for Figure 5 A sectional view along the 6-6 direction.

[0013] Figure 6A for Figure 6 Enlarged view of point 6A.

[0014] Figure 7 for Figure 5 A sectional view along the 7-7 direction.

[0015] Figure 8 for Figure 5 A sectional view along the 8-8 direction.

[0016] Explanation of reference numerals in the attached figures:

[0017] 100: Fall arrestor with rope cleaning brush

[0018] 10: Outer shell

[0019] 10A: Half-shell

[0020] 12: Sidewall

[0021] 14: Zhou Bi

[0022] 141: Notch

[0023] 16: Exports

[0024] 161: Flange

[0025] 20: Fall arrestor body

[0026] 21: Rope body

[0027] 22: Bracket

[0028] 221: Disc Body

[0029] 222: Through hole

[0030] 23: Braking components

[0031] 231: Centrifuge block

[0032] 232: Ratchet

[0033] 233: Positioning spring

[0034] 24: Spindle

[0035] 241: End

[0036] 242: Screw hole

[0037] 25: Fixing screws

[0038] 251: Head

[0039] 26: Hub

[0040] 261: Rope Groove

[0041] 262: Installation Department

[0042] 28: Spiral Spring

[0043] 30: Speed ​​reduction device

[0044] 32: Circular groove

[0045] 34: Internal ratchet

[0046] 40: Brush Module

[0047] 42: Brush Unit Holder

[0048] 421:Body

[0049] 422: Circular Ditch

[0050] 423: Brush unit slot

[0051] 4231: Hook and button

[0052] 424: Rope threading hole

[0053] 425: Enlarged section

[0054] 44: Brush Unit

[0055] 441: Brush holder

[0056] 442: Brush bristles

[0057] S: Chamber

[0058] L: Hanging ring Detailed Implementation

[0059] To more clearly illustrate this utility model, preferred embodiments are described in detail below with reference to the accompanying drawings. Please refer to... Figures 1 to 5 As shown, a preferred embodiment of the present invention is a fall arrestor 100 with a rope cleaning brush, comprising a housing 10, a fall arrestor body 20, a deceleration device 30, and a brush module 40, wherein:

[0060] The outer casing 10 includes two half-shells 10A and has an internal chamber S. The two half-shells 10A are connected by screws, making them detachable; in other preferred embodiments, the two half-shells 10A can also be connected by hooks or latches. Each half-shell 10A has a side wall 12 and a peripheral wall 14 connected to the side wall 12. The two side walls 12 of the two half-shells 10A are opposite each other, and a notch 141 is formed at the bottom edge of each peripheral wall 14. The two notches 141 are U-shaped and merge to form an outlet 16. A flange 161 is formed around the periphery of the outlet 16, and the outlet 16 communicates with the chamber S. In this preferred embodiment, a lifting ring L is also attached to the top of the outer casing 10.

[0061] The fall arrestor body 20 is disposed within the chamber S of the outer casing 10. Please refer to... Figure 2 and Figures 5 to 8As shown, the fall arrestor body 20 includes a bracket 22, a main shaft 24, a hub 26, a spiral spring 28, a rope 21, and a braking assembly 23. The bracket 22 includes two discs 221, which are hollowed-out discs embedded in the center of each of the side walls 12 by injection molding. Each disc 221 has a through hole 222 in its center, penetrating each of the side walls 12. One of the two through holes 222 is a non-circular hole. In other preferred embodiments, both through holes 222 may also be non-circular.

[0062] The main shaft 24 has an end 241 at each end. The shape around each end 241 conforms to the shape of the corresponding through hole 222. Each end 241 is embedded in the through hole 222 and has a screw hole 242 at its outer end. A fixing screw 25 is screwed into each screw hole 242. Each fixing screw 25 has a head 251 and abuts against the periphery of each through hole 222, thereby fixing the main shaft 24 in the chamber S of the housing 10 and preventing the main shaft 24 from rotating relative to the housing 10.

[0063] The hub 26 is rotatably fitted around the main shaft 24. The hub 26 has a rope groove 261 around its periphery, and a mounting portion 262 is located on one side of the hub 26 corresponding to the extension direction of the main shaft 24. The mounting portion 262 is a surface perpendicular to the extension direction of the main shaft 24. A spiral spring 28 is disposed between the main shaft 24 and the hub 26. One end of the spiral spring 28 is connected to the main shaft 24, and the other end is connected to the hub 26. Therefore, when the hub 26 rotates relative to the main shaft 24, the spiral spring 28 provides a restoring force to return the hub 26 to its original position. The rope 21 has two ends, with one end connected to the hub 26. The rope 21 is accommodated within the rope groove 261 and is wound multiple turns around the hub 26. The other end of the rope 21 extends out of the outlet 16 of the outer casing 10.

[0064] The braking assembly 23 is coupled to the mounting portion 262 of the hub 26, and the braking assembly 23 faces the sidewall 12 of one of the two half-shells 10A. The braking assembly 23 includes three centrifugal blocks 231, which are arranged at equal intervals around the main shaft 24. One end of each centrifugal block 231 is rotatably pivotally connected to the mounting portion 262, and a ratchet portion 232 is formed at the other end of each centrifugal block 231. A positioning spring 233 is connected between each ratchet portion 232 and the mounting portion 262. In other preferred embodiments, the braking assembly 23 may also include only two centrifugal blocks 231 or more centrifugal blocks 231, which are arranged around the main shaft 24 and pivotally connected to the mounting portion 262 in the same manner as the centrifugal blocks 231 described above.

[0065] Please refer to Figure 6 and Figure 8 As shown, when the rope 21 is pulled outward and drives the hub 26 to rotate, if the rotational speed of the plurality of centrifugal blocks 231 of the braking assembly 23 exceeds a predetermined speed as the hub 26 rotates, the centrifugal force on each centrifugal block 231 will exceed the elastic force held by each positioning spring 233. At this time, each centrifugal block 231 will rotate outward due to the centrifugal force, causing each ratchet 232 to move in a direction away from the main shaft 24. The predetermined speed setting is for the application scenario of this utility model where the outer shell 10 is suspended at a fixed position by the lifting ring L, and the other end of the rope 21 passing through the outlet 16 is connected to the back-mounted safety belt worn by the human body. The predetermined rotational speed is generally set to be higher than the rotational speed at which the rope 21 is pulled outward from the outlet 16 by a person's hand or body movement, thereby driving the hub 26 to rotate; and lower than the rotational speed at which the hub 26 is driven to rotate by the rope 21 during a fall from the air. In this way, the fall arrestor 100 with rope cleaning brushes provides safety protection when a person falls from the air, but does not hinder the user from working at heights under normal conditions.

[0066] The deceleration device 30 is formed on the sidewall 12 facing the braking assembly 23. Please refer to [link / reference]. Figure 2 , Figure 6 and Figure 8As shown, the deceleration device 30 forms a circular groove 32 on the side wall 12. The center of the circular groove 32 is concentric with the axis of the main shaft 24. Multiple internal ratchet teeth 34 are continuously formed on the inner circumferential surface of the circular groove 32 in a circular arrangement, fixing the multiple internal ratchet teeth 34 within the chamber S. The multiple internal ratchet teeth 34 of the deceleration device 30 are configured to engage with the multiple centrifugal blocks 231 of the braking assembly 23 when the rotational speed of the multiple centrifugal blocks 231 as the hub 26 rotates exceeds the predetermined rotational speed. Specifically, when each centrifugal block 231 rotates outward due to centrifugal force, the ratchet portion 232 of each centrifugal block 231 engages with one of the multiple internal ratchet teeth 34, and the deceleration device 30 stops the rotation of the multiple centrifugal blocks 231. The deceleration device 30 thus decelerates the braking assembly 23, the hub 26, and the rope 21 to a stop.

[0067] In addition to the preferred embodiment described above, in which the deceleration device 30 is formed on one side wall 12 of the outer casing 10, in other preferred embodiments, the deceleration device 30 may not be formed on the side wall 12. Instead, a gear disc may be concentrically fixed around the main shaft 24 by a bracket, or the gear disc may be fixed to the side wall 12 by another bracket. Internal ratchet teeth with the same shape and arrangement as the internal ratchet teeth 34 are formed on the inner circumferential surface of the gear disc, and these internal ratchet teeth are also fixed within the chamber S and surround the multiple centrifugal blocks 231. Thus, when the rotational speed of the multiple centrifugal blocks 231 of the braking assembly 23 exceeds the predetermined rotational speed as the hub 26 rotates, the multiple internal ratchet teeth of the gear disc can engage with the multiple centrifugal blocks 231, thereby decelerating the braking assembly 23, the hub 26, and the rope 21 to a stop.

[0068] Please refer to Figures 2 to 4 and Figure 6 , Figure 6AAs shown, the brush module 40 includes a brush unit seat 42 and a brush unit 44. The brush unit seat 42 has a body 421, and an annular groove 422 is formed on the outer peripheral surface of the body 421. The annular groove 422 is fitted onto the flange 161 for fixation, thereby fixing the body 421 to the outlet 16. A brush unit groove 423 is formed on the side of the body 421 opposite to the chamber S. The brush unit groove 423 is a circular groove with an opening facing downwards. Two hooks 4231 are formed at the end edge of the brush unit groove 423 in a circumferential and spaced-out arrangement. In other preferred embodiments, three or more other numbers of hooks may be formed at the end edge of the brush unit groove 423 in a circumferential and spaced-out arrangement. The base 421 has a rope hole 424, which connects the chamber S and the brush unit groove 423. Each end of the rope hole 424 forms an enlarged hole portion 425, and each enlarged hole portion 425 is trumpet-shaped.

[0069] The brush unit 44 includes a bristle base 441 and a plurality of bristles 442. The bristle base 441 is an annular structure, and the plurality of bristles 442 are arranged radially, with the outer ends of the plurality of bristles 442 fixed to the bristle base 441 and the inner ends of the plurality of bristles 442 having circular gaps. The brush unit 44 is embedded in the brush unit groove 423 of the brush unit base 42, and the bristle base 441 is secured by a plurality of hooks 4231, so that the brush unit 44 is detachably embedded in the brush unit groove 423.

[0070] The other end of the rope 21 of the aforementioned deceleration device 30 extends out of the outlet 16. Specifically, the rope 21 sequentially passes through the rope hole 424 of the brush unit seat 42 and the inner side of the bristle seat 441 of the brush unit 44, that is, the circular gap between the inner ends of the plurality of bristles 442, so that the inner ends of the plurality of bristles 442 contact the portion of the rope 21 that passes through the outlet 16. Thus, when the rope 21 passes through the outlet 16, the surface of the rope 21 can be cleaned by the plurality of bristles 442 that contact the area around the rope 21. Please refer to... Figure 6 , Figure 6A and Figure 7As shown, when the rope 21 is pulled out of the outer shell 10 by an external force, the restoring force of the spiral spring 28 allows the hub 26 to rewind the pulled-out portion of the rope 21 back into the outer shell 10. During the rewinding process, the portion of the rope 21 passing through the brush unit 44 is brushed by the multiple bristles 442, which clean the metal shavings or dirt adhering to the rope 21, preventing the rope 21 from bringing external dirt or metal shavings into the outer shell 10. This keeps the outer shell 10 clean, allowing the fall arrestor body 20 inside the outer shell 10 to operate smoothly without being obstructed by dirt.

[0071] Please refer to the following: Figure 6A As shown, in the preferred embodiment of the present invention, the brush unit 44 is detachably fixed to the brush unit slot 423 of the brush unit seat 42. This design allows the multiple bristles 442 to become dirty after a period of use, so that a new brush unit 44 can be replaced in the brush unit slot 423, and the clean bristles 442 can then perform the function of cleaning the rope 21, keeping the inside of the outer shell 10 clean, and ensuring that the fall arrestor body 20 inside the outer shell 10 operates reliably and is safer.

[0072] In other preferred embodiments, besides being fastened to the brush unit slot 423 by the plurality of hooks 4231, the brush unit 44 may not have the plurality of hooks 4231 on the end edge of the brush unit slot 423. Instead, an internal thread is formed on the inner circumferential surface of the brush unit slot 423, and an external thread is formed on the outer circumferential surface of the bristle holder 441. In this way, the brush unit 44 is detachably connected to the brush unit slot 423 of the brush unit holder 42 by means of internal and external thread engagement. Furthermore, the brush unit slot 423 may be a rectangular slot in addition to being a circular slot; in this case, the bristle holder 441 of the brush unit 44 is also designed as a rectangular ring, so that the brush unit 44 can be securely embedded in the brush unit slot 423 and fastened by the hooks 4231. In addition, the brush unit seat 42 may not be provided at the outlet 16. The bristle seat 441 of the brush unit 44 can be directly fixed to the periphery of the outlet 16. Similarly, the part of the rope 21 passing through the outlet 16 is contacted by the inner ends of the multiple bristles 442, so that the surface of the rope 21 can be cleaned by the multiple bristles 442.

[0073] The above description is only a preferred and feasible embodiment of the present utility model. Any equivalent changes made by applying the present utility model specification and claims should be included within the patent scope of the present utility model.

Claims

1. A fall arrestor with a rope-based cleaning brush, characterized in that, include: An outer casing having a chamber inside, and an outlet on one side of the outer casing communicating with the chamber; A fall arrestor body includes a main shaft, a hub, a spiral spring, a rope, and a braking assembly; the main shaft is fixed in the chamber; the hub is rotatably fitted around the main shaft and has a mounting portion on one side; the spiral spring has two ends and is respectively connected to the main shaft and the hub; one end of the rope is connected to the hub and is wound around the hub in multiple turns, and the other end of the rope extends out of the outlet; the braking assembly is connected to the mounting portion. A speed reduction device is fixed in the chamber and configured to engage with the braking assembly; as well as A brush unit includes a bristle base and a plurality of bristles; the bristle base is a ring and fixed at the outlet, the plurality of bristles are arranged radially and fixed at their outer ends to the bristle base; a rope passes through the inside of the bristle base, and the inner ends of the plurality of bristles contact the portion of the rope that passes through the outlet.

2. The fall arrestor with a rope cleaning brush as described in claim 1, characterized in that, A brush unit seat is provided in conjunction with the brush unit; the brush unit seat has a body, the periphery of which is fixed to the periphery of the outlet, and a brush unit groove is formed on the side of the body away from the chamber. The body has a rope hole that connects the chamber and the brush unit groove; the brush unit is detachably fixed to the brush unit groove.

3. The fall arrestor with a rope cleaning brush as described in claim 2, characterized in that, A flange is formed around the periphery of the outlet; an annular groove is formed on the outer peripheral surface of the seat, and the annular groove is fitted and fixed to the flange.

4. The fall arrestor with a rope cleaning brush as described in claim 3, characterized in that, The end edge of the brush unit groove forms at least two hooks in a circumferential and spaced arrangement; the brush unit is detachably embedded in the brush unit groove, and the at least two hooks are engaged around the bristle base.

5. The fall arrestor with a rope cleaning brush as described in claim 4, characterized in that, The two ends of the rope hole are respectively formed into an enlarged portion, and each of the enlarged portions is trumpet-shaped.

6. The fall arrestor with a rope cleaning brush as described in claim 1, characterized in that, The outer shell includes two half-shells that are detachably connected. Each half-shell has a side wall and a peripheral wall connected to the side wall. A notch is formed at the edge of each peripheral wall, and the two notches are merged to form the outlet.

7. The fall arrestor with a rope cleaning brush as described in claim 6, characterized in that, A brush unit seat is provided in conjunction with the brush unit; the brush unit seat has a body, the periphery of which is fixed to the periphery of the outlet, and a brush unit groove is formed on the side of the body away from the chamber. The body has a rope hole that connects the chamber and the brush unit groove; the brush unit is detachably fixed to the brush unit groove.

8. The fall arrestor with a rope cleaning brush as described in claim 7, characterized in that, The fall arrestor body includes a bracket, which includes two discs. The two discs are respectively embedded in the middle of each of the side walls and have a through hole. At least one of the two through holes is a non-circular hole. The two ends of the main shaft are respectively formed into an end, each end being embedded in each of the through holes and having a screw hole. A fixing screw is screwed into each of the screw holes. Each fixing screw has a head, and each head abuts against the periphery of each of the through holes for fixation.

9. The fall arrestor with a rope cleaning brush as described in claim 8, characterized in that, The braking assembly includes at least two centrifugal blocks arranged around the main shaft. One end of each centrifugal block is rotatably pivotally connected to the periphery of the mounting portion, and a ratchet portion is formed at the other end of each centrifugal block. A positioning spring is connected between each ratchet portion and the mounting portion. When the rotational speed of the plurality of centrifugal blocks of the braking assembly exceeds a predetermined speed as the hub rotates, each centrifugal block rotates outward due to centrifugal force, causing the ratchet portion to engage with the deceleration device.

10. The fall arrestor with a rope cleaning brush as described in claim 9, characterized in that, One of the two semi-shells has a sidewall facing the braking assembly. The deceleration device forms a circular groove on the sidewall facing the braking assembly. The circular groove is concentric with the main shaft. The inner circumferential surface of the circular groove continuously forms a plurality of internal ratchet teeth in a circular arrangement. The ratchet portion of each centrifugal block is used to engage with one of the plurality of internal ratchet teeth of the deceleration device.

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