TWI895169B - Fall arrester for deceleration recovery rope - Google Patents

Abstract

A deceleration recovery rope anti-fall device is provided, wherein a main shaft is fixed in an outer shell, a swivel hub is fitted on the main shaft, a spiral spring is connected between the main shaft and the swivel hub, a rope extending from the outer shell is wound around the swivel hub, a brake assembly is connected to one side of the swivel hub, a brake device is fixed in the outer shell for engagement with the brake assembly, a deceleration assembly is provided in the swivel hub, and a damper is fixed to the main shaft. A bracket is provided, wherein a rotational damper is fixed to the damper bracket and is spaced apart from the main shaft. A linkage gear is fixed to the inner wall of the hub and is concentric with the hub for engaging the rotational damper. When the rope is pulled out of the outer housing, the damping effect provided by the rotational damper can reduce the force exerted by the hub to rewind the rope, thereby avoiding the danger of the rope being rewound too quickly by the hub.

Description

Fall arrester for deceleration recovery rope

The present invention relates to a high-altitude safety device; in particular, it relates to a fall arrester for a deceleration recovery rope.

Conventional fall arresters are designed with a fixed outer casing and a rope extending from the outer casing, which is then connected to a backpack safety harness worn by a person. When a person wearing the backpack safety harness falls from mid-air, the rope pulls, causing the swivel inside the arrester to rapidly rotate. This causes the brake assembly within the swivel to engage with a deceleration device fixed within the outer casing, preventing the swivel from continuing to rotate and releasing the rope. This prevents the person from continuing to fall, achieving a safe fall arrest effect.

The aforementioned conventional fall arrester has a spiral spring installed within its outer housing, which returns the rotating hub to its original position. Therefore, once the fall arrester's rope is released from the outer housing, if no force is continuously applied to the rope, the hub will rotate in the opposite direction and return to its original position. During this process, the originally released rope will be rewound back into the outer housing. Although the retractable design of the rope enables the above-mentioned fall arrester to automatically retract the rope after it is released, the lack of a deceleration mechanism during the reeling process of the rope can lead to the danger of the rope being swung back by the reel when it is suddenly released.

In view of this, the object of the present invention is to provide a fall arrester in which a device is installed to decelerate the turntable. When the turntable automatically retracts the rope, the speed of the turntable is reduced, so that the turntable does not rotate too fast when retracting the rope, causing the rope to swing and pose a danger to surrounding objects or people.

To achieve the above-mentioned object, the present invention provides a fall arrester with a deceleration recovery rope, comprising an outer shell, an anti-fall arrester body, and a deceleration assembly. The outer shell has an installation space inside, and a rope outlet is formed on one side of the outer shell, the rope outlet communicating with the installation space. The anti-fall device body includes a main shaft, a rotating hub, a spiral spring, a rope, a brake assembly, and a brake device. The main shaft is fixed in the installation space. The rotating hub is rotatably fitted around the main shaft. One side of the rotating hub has a mounting portion and an internal spiral spring chamber and a deceleration assembly chamber. The inner side of the rotating hub adjacent to the deceleration assembly chamber forms an inner wall. The torsion spring is disposed in the torsion spring chamber and has two ends, the two ends of the torsion spring being coupled to the main shaft and the pivot respectively. One end of the rope is coupled to the pivot and wound around the pivot multiple times, and the other end of the rope passes through the rope outlet. The brake assembly is coupled to the mounting portion. The brake device is fixed in the mounting space and is configured to be engageable by the brake assembly. The deceleration assembly is disposed in the deceleration assembly chamber and includes a damper bracket, at least one rotary damper, and a linkage gear. The damper bracket is fixed to the main shaft, and the at least one rotary damper is fixed to the damper bracket and spaced apart from the main shaft. The linkage gear is fixed to the inner wall of the hub and is concentric with the hub. The linkage gear engages the at least one rotary damper.

The effect of the present invention is that when the user connects the rope to the backpack safety belt worn by the human body, and pulls the rope out from the rope outlet by hand or body movement, the spiral spring will apply a restoring force to the swivel to rotate in the opposite direction. At this time, if the connection between the rope and the backpack safety belt is suddenly untied, or the user suddenly releases the rope, the spiral spring will drive the swivel in the opposite direction. The rope body rotates and is simultaneously and rapidly retracted. However, due to the damping effect of the at least one rotation damper of the deceleration assembly, the speed at which the vortex spring drives the pivot to rotate in the opposite direction to retract the rope body can be slowed down, thereby preventing the rope body from moving too fast during retraction, causing the rope body to swing and cause danger to objects or people in the surrounding environment. This makes the fall arrester with deceleration recovery rope body safer in use.

To more clearly illustrate the present invention, a preferred embodiment is described below with reference to the accompanying drawings. Referring to FIG. 1 to FIG. 5 , a deceleration recovery rope anti-fall device 100 according to a preferred embodiment of the present invention is shown, comprising a housing 10 , a anti-fall device body 20 , and a deceleration assembly 30 . The anti-fall device body 20 and the deceleration assembly 30 are installed within the housing 10. Based on the placement of the housing 10 in use, the two sides of the deceleration recovery rope anti-fall device 100 corresponding to the upper and lower directions are referred to as the top side and the bottom side, respectively. The structure of the deceleration recovery rope anti-fall device 100 is described below based on these definitions of directions.

The outer shell 10 includes two half shells 10A and has an installation space S inside. The two half shells 10A are connected by screws, so that the two half shells 10A can be detachable; in other preferred embodiments, the two half shells 10A can also be connected by a hook or tenon structure. Each half-shell 10A has a sidewall 12 and a peripheral wall 14 connected to the sidewall 12. The two sidewalls 12 of the two half-shells 10A face each other. A hanging ring recess 161 is formed on the edge of the top side of each peripheral wall 14. The two hanging ring recesses 161 are semicircular and merge to form a hanging ring opening 16. The hanging ring opening 16 communicates with the installation space S. A rope recess 181 is formed on the edge of the bottom side of each peripheral wall 14. The two rope recesses 181 are U-shaped and merge to form a rope outlet 18. The rope outlet 18 communicates with the installation space S, and a guide ring 182 is fixed to the periphery of the rope outlet 18.

The anti-fall device body 20 includes a main shaft frame 22, a main shaft 24, a swivel 26, a spiral spring 28, a rope 21, a brake assembly 23 and a brake device 25. The main shaft frame 22 is embedded in the installation space S of the housing 10 and includes a ring seat 221, two side plates 222 and a connecting rod 223, wherein the ring seat 221 is set at the top of the installation space S, and a ring 224 is combined with the ring seat 221. The ring 224 passes through the ring opening 16 of the housing 10. The side panels 222 are respectively arranged on the inner sides of the two side walls 12, the ring seat 221 is connected to the top ends of the two side panels 222, and the two ends of the connecting rod 223 are connected to the bottom ends of the two side panels 222. The middle of the two side panels 222 has a side panel through hole 225, and each side panel through hole 225 is a non-circular hole.

The two ends of the main shaft 24 are embedded in the two side plate through-holes 225 of the two side plates 222 and fixed thereto, so that the main shaft 24 is fixed within the installation space S of the housing 10 and cannot rotate relative to the housing 10. The main shaft 24 has an axis L, and the direction of the axis L is perpendicular to the vertical direction. The main shaft 24 has a bracket fixing portion 241 and a sleeve fixing portion 242 on either side of the axis L. The circumference of the bracket fixing portion 241 is non-circumferential, and the circumference of the sleeve fixing portion 242 is non-circumferential. In this preferred embodiment, the portion between the two ends of the main shaft 24 other than the bracket fixing portion 241 and the sleeve fixing portion 242 is a rod. In other preferred embodiments, only the portion between the two ends of the main shaft 24 that can be fitted with a rotatable object is set as a rod, for example, the portion of the main shaft 24 that can be fitted with the rotating hub 26 is set as a rod.

Referring to Figures 2, 4, and 6-9, the hub 26 has a hub shaft hole 261 at its center. The hub shaft hole 261 rotatably fits around the main shaft 24, thereby rotatably fitting the hub 26 around the main shaft 24. The hub 26 has a cable groove 262 around its periphery. Inside the hub 26, along the axis L, there are a coil spring chamber 263 and a deceleration assembly chamber 264. In the preferred embodiment, the hub shaft hole 261 is directly connected to the deceleration assembly chamber 264, and the inner side of the hub 26 adjacent to the deceleration assembly chamber 264 forms an inner wall portion 265. The surface of the inner wall portion 265 is perpendicular to the axis L of the main shaft 24. One side of the spiral spring chamber 263 is connected to the deceleration assembly chamber 264, and the diameter of the spiral spring chamber 263 is larger than that of the deceleration assembly chamber 264. A flange portion 266 is formed around the spiral spring chamber 263 and the deceleration assembly chamber 264. The hub 26 has a mounting portion 267 on one side thereof, corresponding to the extending direction of the axis L, and a cover 268 on the other side thereof. The cover 268 shields the other side of the coil spring chamber 263 and has a cover through-hole 2681 at its center. The main shaft 24 passes through the cover through-hole 2681 of the cover 268.

The coil spring 28 is disposed in the coil spring chamber 263. The coil spring 28 has two ends, one of which is coupled to the main shaft 24 and the other to the pivot 26. Therefore, when the pivot 26 rotates relative to the main shaft 24, the coil spring 28 deforms, providing a restoring force to return the pivot 26 to its original position. The rope 21 has two ends, one of which is coupled to the hub 26. The rope 21 is received within the rope groove 262 and wound multiple times around the hub 26. The other end of the rope 21 passes through the inner side of the guide ring 182 and out of the rope outlet 18 of the housing 10. As shown in Figures 7 and 10, when the rope 21 is pulled outward from the rope outlet 18 by an external force, the rope 21 drives the hub 26 to rotate about the main shaft 24. This defines the hub 26 as rotating in the forward direction. Conversely, when the tension pulling the rope 21 outward no longer exists, the spiral spring 28 provides a restoring force for the hinge 26 to rotate back to its original position. At this time, the hinge 26 will rotate in the opposite direction and rewind the rope 21 that was pulled outward into the housing 10, and rewind it around the hinge 26.

2 , 4 , and 9 , the brake assembly 23 includes two pawl blocks 23A arranged around the main shaft 24. The center of each pawl block 23A is pivotally connected to the mounting portion 267. Each pawl block 23A has a ratchet portion 231 at one end and a center of gravity portion 232 at the other end. A roller 233 is coupled to each center of gravity portion 232, and a counterweight spring 234 is connected between each center of gravity portion 232 and the mounting portion 267.

The brake device 25 is fixed within the mounting space S of the housing 10 and is configured to engage with the brake assembly 23. The brake device 25 comprises a sleeve 251, a retaining ring 252, a ratchet plate 253, a brake pad 254, and a washer 255. The sleeve 251 is fitted over the sleeve fixing portion 242 of the spindle 24 and fixed thereto. Because the sleeve fixing portion 242 has a non-circumferential surface, the sleeve 251 cannot rotate relative to the spindle 24 after being fitted over the spindle 24. A base 2511 is connected to the periphery of one end of the sleeve 251. The fixing ring 252 is detachably coupled to the sleeve 251 . Specifically, the fixing ring 252 is sleeved around the sleeve 251 and fixed to the sleeve 251 by screws passing therethrough.

The ratchet plate 253 is rotatably fitted around the sleeve 251 and is located between the base 2511 and the fixed ring 252. The ratchet plate 253 has a plurality of external ratchets 2531 around it, and the ratchet plate 253 is located on the inner side of the pawl blocks 23A, so that the external ratchets 2531 can be used to engage the ratchet portions 231 of each pawl block 23A. In this way, the brake device 25 is configured as a structure that can be engaged with the brake assembly 23. When the anti-fall device 100 of the deceleration recovery rope body is stationary, the rollers 233 of the pawl blocks 23A are resting on the ratchet plate 253. The brake pad 254 is pressurized and clamped between the chassis 2511 and the ratchet plate 253 , and the pad 255 is pressurized and clamped between the ratchet plate 253 and the fixing ring 252 . As a result, the brake pad 254 generates frictional resistance on the ratchet plate 253 when the ratchet plate 253 rotates relative to the sleeve 251 , thereby producing a braking effect.

When the rope 21 is pulled outward from the rope outlet 18 by an external force, driving the hub 26 to rotate about the main shaft 24, the rollers 233 of the pawl blocks 23A of the brake assembly 23 roll or slide along the circumference of the ratchet plate 253. When the hub 26 rotates slowly, the rollers 233 can remain in a sliding or rolling state along the surfaces of the outer ratchets 2531. However, when the rotation speed of the pawl blocks 23A of the brake assembly 23 along with the rotation of the hub 26 exceeds a predetermined speed, the collision between each roller 233 and the external ratchets 2531 causes each pawl block 23A to rotate, causing each ratchet portion 231 to engage with one of the external ratchets 2531 .

3 , 5 , 7 and 10 , the deceleration assembly 30 is disposed in the deceleration assembly chamber 264 of the swivel hub 26 and includes a damper bracket 32 , three rotary dampers 34 , a linkage gear seat 36 , a linkage gear 38 and a compression spring 31 . Among them, the damper bracket 32 is fixed to the main shaft 24. Specifically, the damper bracket 32 has a base 321, and a base sleeve hole 322 is provided in the middle of the base 321. The base sleeve hole 322 is a non-circular hole and is fitted on the bracket fixing portion 241 of the main shaft 24 for fixation. Three extension arms 323 are connected around the base 321. These extension arms 323 respectively have a through hole 324. These through holes 324 are equidistant from the main shaft 24. Each extension arm 323 has a pair of extension arm through holes 325 corresponding to the parts on both sides of each through hole 324.

The rotation dampers 34 are fixed to the extension arms 323 and are thereby spaced apart from the main shaft 24. Each rotation damper 34 has a body 341 that is inserted through the through-hole 324. Each body 341 has a reduction gear 342 on a side near the inner wall 265. The reduction gear 342 is concentric with the body 341 and has a smaller diameter than the body 341. Each body 341 has a bottom plate 343 on its side away from the inner wall portion 265. Each bottom plate 343 rests against the surface of each extension arm 323 and has a pair of bottom plate through-holes 3431 on both sides. A pair of fixing members 344 is inserted through each pair of extension arm through-holes 325 and each pair of bottom plate through-holes 3431. In the preferred embodiment, these fixing members 344 are riveted to a partition plate 33. The partition plate 33 is a circular plate that rests against the flange portion 266. The partition plate 33 has a partition plate through-hole 331 in its center. The main shaft 24 passes through the partition plate through-hole 331. The partition plate 33 blocks the coil spring chamber 263 from the deceleration assembly chamber 264.

The linkage gear seat 36 is screwed to the inner wall portion 265 of the rotating hub 26. A linkage gear seat shaft hole 361 is defined in the center of the linkage gear seat 36. The linkage gear seat shaft hole 361 is rotatably fitted to the main shaft 24. The linkage gear 38 is screwed to the linkage gear seat 36, thereby securing the linkage gear 38 to the inner wall portion 265 of the rotating hub 26 through the linkage gear seat 36. The linkage gear 38 has a linkage gear shaft hole 381 at its center. The linkage gear shaft hole 381 is rotatably fitted on the main shaft 24 and is concentric with the rotating hub 26 . The linkage gear 38 is engaged with the inner sides of the reduction gears 342 of the rotary dampers 34 .

In the preferred embodiment, the rotation dampers 34 are unidirectional, providing resistance only when the hub 26 rotates in the reverse direction, slowing the hub 26's reverse rotation. The compression spring 31 is disposed around the main shaft 24 and has two ends. One end of the compression spring 31 abuts against the base 321 of the damper bracket 32, and the other end abuts against the linkage gear 38. In this way, the linkage gear 38 can maintain a distance from the main bodies 341 of the rotational dampers 34, so that the linkage gear 38 will not be too close to the main bodies 341 during rotation, thereby avoiding friction between the linkage gear 38 and the main bodies 341 and hindering the rotational movement of the linkage gear 38.

The predetermined rotational speed, as shown in Figures 7 and 10 , is set to accommodate the present invention's application scenario of suspending the housing 10 from a fixed location using the hanging ring 224 and attaching the other end of the rope 21 through the rope outlet 18 to a person's backpack safety harness. The predetermined rotational speed is typically set to a value higher than the rotational speed of the hub 26 caused by the rope 21 being pulled outward from the rope outlet 18 by hand or human movement. The predetermined rotational speed is also set to a value lower than the rotational speed of the hub 26 caused by the rope 21 during a person's fall from mid-air. In this way, the fall arrester 100 of the deceleration recovery rope can prevent the human body from continuing to fall when the human body falls from the air, but under normal circumstances, the rope body 21 can be pulled out by the human hand or the movement of the human body without hindering the movement of the user.

When the user pulls the rope 21 out of the housing 10 to a certain length, the deceleration assembly 30 disposed between the pivot 26 and the main shaft 24 can counteract the restoring force of the vortex spring 28 driving the pivot 26 to rotate in the opposite direction to retract the rope 21 through the damping effect of the rotation dampers 34 . Thus, after the user has pulled the rope 21 out of the housing 10 to a certain length, if the user suddenly unties the rope from the backpack safety belt or suddenly releases the rope 21, the damping effect of the rotational dampers 34 can reduce the speed at which the vortex spring 28 drives the pivot 26 to rotate in the opposite direction to retract the rope 21. This can prevent the rope 21 from swinging and colliding with a person or object due to excessive speed during retraction.

In addition to the preferred embodiment described above, the brake assembly 23 may include three or more pawl blocks 23A, and the pawl blocks 23A may be arranged to surround the main shaft 24. Furthermore, the brake device 25 may include the brake pad 254 between the base 2511 and the ratchet plate 253, and the washer 255 between the fixing ring 252 and the ratchet plate 253. Alternatively, the base 2511 and the fixing ring 252 may directly clamp and press the ratchet plate 253, thereby producing a braking effect on the rotation of the ratchet plate 253.

In addition to integrating three rotational dampers 34 with the damper bracket 32, the deceleration assembly 30 may also integrate only one, two, or another number of rotational dampers 34 with the damper bracket 32. In addition to integrating the linkage gear 38 with the inner wall 265 of the hub 26 via the linkage gear seat 36, the linkage gear 38 may also be directly concentrically secured to the inner wall 265 of the hub 26 without the linkage gear seat 36. This similarly achieves the effect of connecting the hub 26 to the deceleration assembly 30, enabling the hub 26 to be decelerated by the deceleration assembly 30 when driven in the reverse direction by the coil spring 28.

The above description is merely an example of the preferred embodiment of the present invention. Any equivalent variations made by applying the present invention description and the scope of the patent application should be included in the patent scope of the present invention.

100: Fall arrester for deceleration recovery rope 10: Housing 10A: Half housing 12: Side wall 14: Peripheral wall 16: Lifting ring opening 161: Lifting ring notch 18: Rope outlet 181: Rope notch 182: Guide ring 20: Fall arrester body 21: Rope body 22: Spindle frame 221: Lifting ring seat 222: Side plate 223: Connecting rod 224: Lifting ring 225: Side plate through hole 23: Brake assembly 23A: Pawl block 231: Ratchet 232: Center of gravity 233: Roller 234: Counterweight spring 24: Main shaft 241: Bracket mounting 242: Sleeve mounting 25: Brake assembly 251: Sleeve 2511: Chassis 252: Retaining ring 253: Ratchet plate 2531: External ratchet 254: Brake pad 255: Washer 26: Swing 261: Swing shaft hole 262: Rope groove 263: Coil spring chamber 264: Deceleration assembly chamber 265: Inner wall 266: Flange 267: Mounting section 268: Cover 2681: Cover hole 28: Coil spring 30: Deceleration assembly 31: Compression spring 32: Damper bracket 321: Base 322: Base hole 323: Extension arm 324: Through hole 325: Extension arm through hole 33: Spacer 331: Spacer through hole 34: Rotary damper 341: Body 342: Deceleration gear 343: Base plate 3431: Base plate through hole 344: Fixings 36: Interlocking gear seat 361: Interlocking gear seat shaft hole 38: Interlocking gear 381: Interlocking gear shaft hole L: Axis line S: Mounting space

Figure 1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is an exploded view of the preferred embodiment of the present invention. Figure 3 is an exploded view of the anti-fall device body and the deceleration assembly in Figure 2. Figure 4 is an exploded view of the brake device and the main shaft in Figure 3. Figure 5 is an exploded view of the deceleration assembly and the main shaft in Figure 3. Figure 6 is a right side view of the preferred embodiment of the present invention. Figure 7 is a cross-sectional view taken along line 7-7 of Figure 6. Figure 8 is a front view of the preferred embodiment of the present invention. Figure 9 is a cross-sectional view taken along line 9-9 of Figure 8. Figure 10 is a cross-sectional view taken along line 10-10 of Figure 8.

21: Rope Body

22: Spindle frame

221: Ring Seat

222:Side panel

223: Connecting rod

225: Side panel perforations

24: Main axis

241: Bracket fixing part

242: Sleeve fixing part

25: Braking system

26: Turn

261: Hub shaft hole

262: Rope Groove

263: Coil Spring Chamber

264: Deceleration component room

265: Inner wall

266: French Department

268: Cover plate

28: Coil Spring

31: Compression spring

32: Damper bracket

33: Partition

331: Partition perforation

34: Rotational damper

36: Linkage gear seat

38: Interlocking gear

L: axis

Claims (10)

A fall arrester with a deceleration recovery rope comprises: A housing having an interior mounting space, a side of the housing having a rope outlet, the rope outlet communicating with the mounting space; A fall arrester body comprising a main shaft, a pivot, a vortex spring, a rope, a brake assembly, and a brake device; The main shaft is fixed within the mounting space; The pivot is rotatably fitted around the main shaft, having a mounting portion on one side of the pivot and a vortex spring chamber and a deceleration assembly chamber within the pivot; The portion of the inner side of the pivot adjacent to the deceleration assembly chamber forms an inner wall portion; A torsion spring is disposed in the torsion spring chamber and has two ends, the two ends of the torsion spring being coupled to the main shaft and the pivot, respectively. One end of the rope is coupled to the pivot and wound around the pivot multiple times, with the other end of the rope passing through the rope outlet. The brake assembly is coupled to the mounting portion. The brake device is fixed within the mounting space and is configured to be engageable by the brake assembly. A deceleration assembly is disposed in the deceleration assembly chamber and includes a damper bracket, at least one rotary damper, and a linkage gear. The damper bracket is fixed to the main shaft, and the at least one rotary damper is fixed to the damper bracket and spaced apart from the main shaft. The linkage gear is fixed to the inner wall of the hub and is concentric with the hub. The linkage gear engages the at least one rotary damper. The anti-fall device of the deceleration recovery rope body as described in claim 1, wherein the main shaft has a bracket fixing portion, the circumferential surface of the bracket fixing portion is a non-circumferential surface; the damper bracket has a base, the middle of the base has a base sleeve hole, the base sleeve hole is a non-circular hole and is fitted on the bracket fixing portion for fixation, and a plurality of extension arms are connected around the base; the at least one rotational damper includes a plurality of rotational dampers, which are respectively fixed to each of the extension arms and have a body, each of the bodies has a reduction gear on a side close to the inner wall, each of the reduction gears is concentric with each of the bodies, and the diameter of each of the reduction gears is smaller than the diameter of each of the bodies; the linkage gear engages with the reduction gears. The anti-fall device of the deceleration recovery rope as described in claim 2, wherein the deceleration assembly further includes a compression spring, which is arranged around the main shaft and has two ends, and the two ends of the compression spring respectively abut against the base of the damper bracket and the linkage gear. As described in claim 2, the fall arrester of the deceleration recovery rope, wherein the extension arms respectively have a through hole, the through holes are equidistant from the main axis, and each extension arm has a pair of extension arm through holes corresponding to the parts on both sides of each through hole; each main body is passed through each through hole, and each main body has a bottom plate on the other side away from the inner wall, each bottom plate rests on the surface of each extension arm and has a pair of bottom plate through holes on both sides, and a pair of fixing parts are passed through each pair of extension arm through holes and each pair of bottom plate through holes. The anti-fall device of the deceleration recovery rope body as described in claim 4, wherein the vortex spring chamber is connected to the deceleration assembly chamber and the diameter of the vortex spring chamber is larger than that of the deceleration assembly chamber, and a flange portion is formed around the vortex spring chamber and the deceleration assembly chamber; the fixing parts are riveted and riveted to a partition, which is abutted against the flange portion and has a partition through-hole in the center, and the main shaft passes through the partition through-hole. The anti-fall device of the deceleration recovery rope body as described in claim 5, wherein the center of the turning hub has a turning hub shaft hole, the turning hub shaft hole is connected to the deceleration assembly chamber and is rotatably fitted on the main shaft; the deceleration assembly further includes a connecting gear seat, the connecting gear seat is coupled to the inner wall portion of the turning hub, and the connecting gear is fixed to the inner wall portion of the turning hub through the connecting gear seat. As described in claim 6, the anti-fall device of the deceleration recovery rope body, wherein the connecting gear seat is coupled to the inner wall portion by means of a screw lock and has a connecting gear seat shaft hole in the middle, and the connecting gear seat shaft hole can be rotatably fitted on the main shaft; the connecting gear is coupled to the connecting gear seat by means of a screw lock and has a connecting gear shaft hole in the center, and the connecting gear shaft hole can be rotatably fitted on the main shaft. The anti-fall device of the deceleration recovery rope as described in claim 2, wherein the brake assembly includes at least two pawl blocks, the at least two pawl blocks are arranged in a manner surrounding the main shaft, the middle of each pawl block is rotatably connected to the periphery of the mounting portion, one end of each pawl block forms a ratchet portion, and the other end forms a center of gravity portion, a roller is combined with each center of gravity portion, and a counterweight spring is connected between each center of gravity portion and the mounting portion; the brake device The brake assembly has a plurality of external ratchets around it, which are located on the inner sides of the pawl blocks and can be engaged by each of the ratchet portions. When the brake assembly rotates with the hub, the rollers roll or slide along the external ratchets around the brake device. When the rotation speed of the brake assembly with the hub exceeds a predetermined speed, each of the rollers collides with the external ratchets, causing each of the pawl blocks to rotate and each of the ratchet portions to engage with one of the external ratchets. As described in claim 8, the anti-fall device of the deceleration recovery rope body, wherein the main shaft has a sleeve fixing portion, the circumferential surface of the sleeve fixing portion is a non-circumferential surface; the braking device includes a sleeve, a fixing ring, and a ratchet plate; the sleeve is fitted on the sleeve fixing portion of the main shaft and fixed, and a chassis is connected to the periphery of one end of the sleeve; the fixing ring is detachably coupled to the sleeve; the ratchet plate is rotatably fitted on the sleeve and clamped between the chassis and the fixing ring, and the external ratchets are formed around the ratchet plate. The anti-fall device of the deceleration recovery rope body as described in claim 9, wherein the other side of the outer shell has a hanging ring opening, and the hanging ring opening is communicated with the installation space; the anti-fall device body includes a main shaft frame, which is embedded in the installation space and includes a hanging ring seat, two side plates and a connecting rod; the hanging ring seat is combined with a hanging ring, and the hanging ring passes through the hanging ring opening, one end of the two side plates is connected to the two sides of the hanging ring seat, and the other end of the two side plates is connected to the two ends of the connecting rod, and the middle of the two side plates has a side plate through hole respectively, and each side plate through hole is a non-circular hole; the two ends of the main shaft are embedded in the two side plate through holes of the two side plates and fixed.