CN111956966B - Falling protector convenient to use - Google Patents
Falling protector convenient to use Download PDFInfo
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- CN111956966B CN111956966B CN202010842654.4A CN202010842654A CN111956966B CN 111956966 B CN111956966 B CN 111956966B CN 202010842654 A CN202010842654 A CN 202010842654A CN 111956966 B CN111956966 B CN 111956966B
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- 230000001012 protector Effects 0.000 title claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 63
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0043—Lifelines, lanyards, and anchors therefore
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0081—Equipment which can travel along the length of a lifeline, e.g. travelers
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Abstract
The invention belongs to the technical field of safety guards, and particularly relates to a convenient-to-use safety guard, which comprises a shell, an elastic sleeve, a steel wire rope, a hook, a winding wheel, a hanging ring, a ratchet wheel and a pawl, wherein when the ratchet wheel is clamped by the pawl, the steel wire rope released from the winding wheel extends out by a length a; the steel wire rope on the winding wheel is continuously released for a length b in the process; after the pawl and the ratchet wheel are locked, the steel wire rope can be quickly pulled out by a length b; no matter how fast the worker pulls the steel wire rope, the steel wire rope with the length b can be pulled out after the pawl and the ratchet wheel are locked, and the process is independent of the speed, so the normal use of the worker cannot be influenced. Compared with the traditional falling protector, a worker can quickly pull the steel wire rope, and the steel wire rope can extend out by a longer length, so that the worker can operate quickly.
Description
Technical Field
The invention belongs to the technical field of falling protectors, and particularly relates to a falling protector convenient to use.
Background
The falling protector is also called a speed difference device, can quickly brake and lock falling objects within a limited distance, is suitable for hoisting goods, protects the life safety of ground operators and prevents the objects of the hoisted workpieces from being damaged; is a novel safety protection tool specially designed for preventing falling from high altitude for high altitude operation personnel.
When the safety hook is used, the nylon lifting rope only needs to cross over a structure with a firm blunt edge above, the lifting ring is removed from the safety hook, the automatic controller is hung above a user, the iron hook on the safety rope is hung in the semicircular ring on the safety belt, and the safety hook can be used. Under the action of the mechanism in the device, the safety rope is always in a semi-tense state, so that a user can work easily and freely without traction and hanging. Once the human body is fallen due to the loss of feet, the pulling-out speed of the safety rope is accelerated, the control system in the device automatically locks immediately, the falling of the safety rope is enabled to be not more than 0.2m, the impact force is less than 2942N, no harm is caused to the human body, the normal work can be recovered once the load is relieved, and the safety rope is automatically recovered into the device after the work is finished, so that the safety rope is convenient to carry.
The prior falling protector has the following problems in the use process:
when workers work, the workers can move rapidly, such as bend over or turn around, and when the workers perform the actions, the speed of pulling out the steel wire rope is too high, so that the falling protector is locked, and the using effect is influenced.
The design contradiction that the falling protector is inconvenient to use caused by locking after falling or unlocking when working quickly is considered, and no better solution exists at present; on the basis of considering more safety, the rapid movement is not required to occur in the work as far as possible, but the construction efficiency and the labor rhythm of workers are influenced.
The invention designs a falling protector convenient to use, and solves the problems.
Disclosure of Invention
In order to solve the defects in the prior art, the invention discloses a convenient-to-use falling protector which is realized by adopting the following technical scheme.
A convenient falling protector comprises a shell, an elastic sleeve, a steel wire rope, a hook, a winding wheel, a lifting ring, a ratchet wheel and a pawl, wherein the lifting ring is fixedly arranged at one end outside the shell, and the elastic sleeve is arranged at the other end outside the shell; the winding wheel is rotatably arranged in the shell, a steel wire rope is wound on the winding wheel, one end of the steel wire rope penetrates out of the shell and is positioned outside the shell through the elastic sleeve; one end of the steel wire rope positioned outside the shell is provided with a hook; the ratchet wheel is rotatably arranged in the shell, the pawl is arranged in the shell in a swinging mode, and two ends of the pawl are matched with the ratchet wheel; a plate spring and a limiting clamping block for limiting the pawl are arranged between the pawl and the shell; the method is characterized in that: two ends of the first rotating shaft are rotatably arranged in the shell, and the winding wheel is rotatably arranged on the first rotating shaft; a second scroll spring is arranged between the winding wheel and the first rotating shaft; a centrifugal block is arranged on the winding wheel, and two first limiting blocks and two second limiting blocks are arranged on the first rotating shaft; the centrifugal block is matched with the first limiting block and the second limiting block; the rotating wheel is provided with a second circular hole, the rotating wheel is fixedly arranged at the lower end of the first rotating shaft through the second circular hole, and the rotating wheel is in rotating fit with the winding wheel; a first volute spiral spring is arranged between the rotating wheel and the shell; when the steel wire rope is not pulled out, the centrifugal block is contacted with one of the two first limiting blocks under the action of the second volute spiral spring, and the sliding-out length of the centrifugal block and the second limiting block do not reach a matching state; the ratchet wheel is fixedly arranged on one side of the rotating wheel.
The mounting disc is slidably mounted on the first rotating shaft, the mounting disc is fixedly provided with a limiting strip, and the limiting strip is in sliding fit with the first rotating shaft; one end of the limiting strip, which is far away from the mounting disc, is in limiting fit with the winding wheel; the transmission disc is slidably mounted on the first rotating shaft, the transmission disc is connected with the mounting disc through a T-shaped ring, one end of the T-shaped ring is fixedly mounted on the transmission disc, and the other end of the T-shaped ring is in rotating fit with the mounting disc; the pawl swings to drive the transmission disc to slide relative to the first rotating shaft through gear transmission. The pawl is fixedly arranged on the third rotating shaft.
As a further improvement of the technology, a second fixed sleeve is arranged on the lower end face in the shell, and the lower end of the third rotating shaft is rotatably arranged in the second fixed sleeve.
As a further improvement of the technology, a first fixing sleeve is arranged on the upper end surface in the shell, and a third fixing sleeve is arranged on the lower end surface; the upper end and the lower end of the first rotating shaft are respectively and rotatably arranged in the first fixing sleeve and the third fixing sleeve.
As a further improvement of the technology, a fourth fixed sleeve is mounted on the lower end face in the shell, a nested ring is mounted at the lower end of the rotating wheel, and the nested ring is in rotating fit with the fourth fixed sleeve; the inner end of the first scroll spring is fixedly arranged on the outer circular surface of the third fixing sleeve, and the outer end of the first scroll spring is fixedly arranged on the inner circular surface of the nested ring.
As a further improvement of the technology, a third mounting groove is formed on the upper end surface of the winding wheel, a first shaft hole is formed on the lower end surface of the third mounting groove, a second mounting groove is formed on the circular surface of the first shaft hole, and the first shaft hole is matched with the first rotating shaft; the inner end of the second scroll spring is fixedly arranged on the outer circular surface of the first rotating shaft, and the outer end of the second scroll spring is fixedly arranged on the circular surface of the second mounting groove.
The circular surface of the third mounting groove is provided with a centrifugal groove, one end of a centrifugal block is slidably mounted in the centrifugal groove, and a return spring is mounted between one end of the centrifugal block positioned in the centrifugal groove and the inner end surface of the centrifugal groove.
A first circular hole is formed in the mounting shell, the mounting shell is fixedly mounted on the first rotating shaft through the first circular hole, and the first limiting block and the second limiting block are mounted on the circular surface of the mounting shell; the centrifugal block is matched with the first limiting block and the second limiting block.
The mounting shell is provided with a sliding groove for the limiting strip to pass through.
As a further improvement of the present technology, a second gear is mounted at the upper end of the third rotating shaft, the mounting rotating shaft is rotatably mounted in the housing, and the third gear is fixedly mounted at one end of the mounting rotating shaft and is meshed with the second gear; the first gear is fixedly arranged at the other end of the mounting rotating shaft; the rack is fixedly arranged on the transmission disc and meshed with the first gear; the diameter of the first gear is larger than the diameter of the third gear.
As a further improvement of the technology, the winding wheel is provided with a first mounting groove for the rotating wheel to be matched in a rotating mode.
As a further improvement of the technology, the winding wheel is provided with a clamping groove matched with the limiting strip.
As a further improvement of the present technique, the second scroll spring has a pre-pressure.
As a further improvement of the technology, the first rotating shaft is provided with a guide groove which is in sliding fit with the limiting strip.
Compared with the traditional falling protector technology, the design of the invention has the following beneficial effects:
1. when the ratchet wheel is blocked by the pawl, the released steel wire rope on the winding wheel extends out by a length a, and after the limit of the winding wheel and the rotating wheel is released, the winding wheel continues to rotate rapidly, so that the centrifugal block and the second limiting block are blocked; the steel wire rope on the winding wheel is continuously released for a length b in the process; after the pawl and the ratchet wheel are locked, the steel wire rope can be quickly pulled out by a length b; no matter how fast the worker pulls the steel wire rope, the steel wire rope with the length b can be pulled out after the pawl and the ratchet wheel are locked, and the process is independent of the speed, so the normal use of the worker cannot be influenced. Compared with the traditional falling protector, a worker can quickly pull the steel wire rope, and the steel wire rope can extend out by a longer length, so that the worker can operate quickly.
2. The first limit block which is not matched with the centrifugal block in the initial state is designed to prevent the centrifugal block from being pulled out infinitely for a long time after the ratchet wheel and the pawl are locked and the speed of operation movement is reduced and the centrifugal block passes through the first limit block.
Drawings
Fig. 1 is an external view of an entire part.
Fig. 2 is a schematic view of the overall component distribution.
Fig. 3 is a schematic view of the housing and hook installation.
Fig. 4 is a schematic view of the housing structure.
Fig. 5 is a schematic view of the internal structure of the housing.
Figure 6 is a schematic view of the wheel installation.
FIG. 7 is a schematic view of an eccentric mass installation.
Fig. 8 is a schematic view of a winding wheel structure.
FIG. 9 is a schematic diagram of the centrifugal block, the first stopper and the second stopper.
FIG. 10 is a schematic view of the ratchet and wheel installation.
FIG. 11 is a schematic view of the mounting of the drive disk and the third shaft.
Fig. 12 is a schematic view of the mounting of the check strip.
Number designation in the figures: 1. a housing; 2. an elastic sleeve; 3. a wire rope; 4. hooking; 5. a winding wheel; 6. a hoisting ring; 7. a first fixing sleeve; 8. a second fixing sleeve; 9. a third fixing sleeve; 10. a fourth fixing sleeve; 11. a ratchet wheel; 12. a first rotating shaft; 13. a first scroll spring; 14. a pawl; 15. a centrifugal block; 16. a drive plate; 17. mounting a shell; 18. mounting a disc; 19. a second scroll spring; 20. a rotating wheel; 21. a first stopper; 22. a second limiting block; 23. a centrifugal tank; 24. a return spring; 25. a first circular hole; 26. a chute; 27. a card slot; 28. a first mounting groove; 29. a second circular hole; 30. a second mounting groove; 31. a first shaft hole; 32. a third mounting groove; 33. nesting rings; 34. a rack; 35. a first gear; 36. a third rotating shaft; 37. a plate spring; 38. a limiting clamping block; 39. a T-shaped ring; 40. a limiting strip; 41. a guide groove; 42. a second gear; 43. a third gear; 44. and (5) installing a rotating shaft.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 and 2, the device comprises a shell 1, an elastic sleeve 2, a steel wire rope 3, a hook 4, a winding wheel 5, a hanging ring 6, a ratchet wheel 11 and a pawl 14, wherein as shown in fig. 3, the hanging ring 6 is fixedly arranged at one end outside the shell 1, and the elastic sleeve 2 is arranged at the other end outside the shell 1; the winding wheel 5 is rotatably installed in the shell 1, as shown in fig. 5, a steel wire rope 3 is wound on the winding wheel 5, one end of the steel wire rope 3 penetrates through the shell 1, and is located on the outer side of the shell 1 through the elastic sleeve 2; one end of the steel wire rope 3 positioned outside the shell 1 is provided with a hook 4; the ratchet wheel 11 is rotatably arranged in the shell 1, the pawl 14 is arranged in the shell 1 in a swinging mode, and two ends of the pawl 14 are matched with the ratchet wheel 11; a plate spring 37 and a limit clamping block 38 for limiting the pawl 14 are arranged between the pawl 14 and the shell 1; the method is characterized in that: as shown in fig. 2 and 6, both ends of the first rotating shaft 12 are rotatably mounted in the housing 1, and as shown in fig. 6, the winding wheel 5 is rotatably mounted on the first rotating shaft 12; a second scroll spring 19 is installed between the winding wheel 5 and the first rotating shaft 12; as shown in fig. 8, a centrifugal block 15 is installed on the winding wheel 5, and two first limiting blocks 21 and two second limiting blocks 22 are installed on the first rotating shaft 12; the centrifugal block 15 is matched with the first limiting block 21 and the second limiting block 22; as shown in fig. 10, the rotor 20 is provided with a second circular hole 29, as shown in fig. 6, the rotor 20 is fixedly installed at the lower end of the first shaft 12 through the second circular hole 29, and the rotor 20 is rotatably engaged with the winding wheel 5; a first scroll spring 13 is arranged between the rotating wheel 20 and the shell 1; when the steel wire rope 3 is not pulled out, the centrifugal block 15 is contacted with one of the two first limiting blocks 21 under the action of the second volute spiral spring 19, and the sliding length of the centrifugal block 15 and the second limiting block 22 do not reach the matching state; the ratchet wheel 11 is fixedly installed at one side of the wheel 20.
The structure and the installation relation of the shell 1, the elastic sleeve 2, the steel wire rope 3, the hook 4, the hanging ring 6, the ratchet wheel 11 and the pawl 14 in the invention are the same as those of the shell 1, the elastic sleeve 2, the steel wire rope 3, the hook 4, the hanging ring 6, the ratchet wheel 11 and the pawl 14 in the existing safety catcher, and the invention belongs to the prior art.
In the invention, when the ratchet wheel 11 is driven to rotate, the ratchet wheel 11 can stir one end of the pawl 14 to enable the pawl 14 to swing, when the rotating speed of the ratchet wheel 11 is relatively large, the stirring force of the ratchet wheel 11 on the pawl 14 is relatively increased, the swinging amplitude of the pawl 14 is relatively increased, the other end of the pawl 14 is matched with the ratchet wheel 11, and the ratchet wheel 11 extrudes the other end of the stirring pawl 14 through teeth on the ratchet wheel 11 to complete the locking of the pawl 14 and the ratchet wheel 11.
The plate spring 37 is used for providing pre-pressure for the pawl 14, so that one end of the pawl 14 and the ratchet wheel 11 are in a matched state in an initial state, and the pawl 14 can be stirred to swing in the rotation process of the ratchet wheel 11; the limiting fixture block 38 designed by the invention has the function of limiting the pawl 14 in the initial state, so that the phenomenon that the contact and matching area of the pawl 14 and the ratchet wheel 11 is too large under the action of the plate spring 37 in the initial state, and the ratchet wheel 11 cannot be smoothly separated from the pawl 14 in the rotating process to generate movement interference is avoided.
The first scroll spring 13 of the present invention acts to return the ratchet 11.
The second scroll spring 19 is designed to ensure that the fixture block and one of the two first limiting blocks 21 are in a tight state in an initial state; the second spiral spring 19 on the other hand has a restoring effect on the winding wheel 5.
As shown in fig. 6, the mounting disc 18 is slidably mounted on the first rotating shaft 12, as shown in fig. 12, a limiting strip 40 is fixedly mounted on the mounting disc 18, and the limiting strip 40 is slidably fitted with the first rotating shaft 12; one end of the limiting strip 40, which is far away from the mounting disc 18, is in limiting fit with the winding wheel 5; the transmission disc 16 is slidably mounted on the first rotating shaft 12, the transmission disc 16 is connected with the mounting disc 18 through a T-shaped ring 39, one end of the T-shaped ring 39 is fixedly mounted on the transmission disc 16, and the other end of the T-shaped ring 39 is in rotating fit with the mounting disc 18; the pawl 14 swings to drive the transmission disc 16 to slide relative to the first rotating shaft 12 through gear transmission.
The reason for designing the mounting disc 18 and the transmission disc 16 to be in rotating fit is to prevent the winding wheel 5 from interfering with the transmission ring in the process of driving the mounting disc 18 to rotate through the limiting strip 40, the rotating wheel 20 and the first rotating shaft 12, and the transmission ring is in rotating fit with the mounting ring because the transmission ring is in transmission connection with the third rotating shaft 36 through a gear and can not rotate and be dislocated with the matched gear. As shown in fig. 2, the pawl is fixedly mounted on the third shaft 36.
As shown in fig. 4, a second fixing sleeve 8 is mounted on the lower end surface of the housing 1, and the lower end of the third rotating shaft 36 is rotatably mounted in the second fixing sleeve 8.
As shown in fig. 4, a first fixing sleeve 7 is mounted on the upper end surface of the housing 1, and a third fixing sleeve 9 is mounted on the lower end surface; as shown in fig. 2, the upper and lower ends of the first rotating shaft 12 are rotatably mounted in the first and third fixing sleeves 7 and 9, respectively.
As shown in fig. 4, a fourth fixing sleeve 10 is mounted on the lower end surface in the housing 1, as shown in fig. 10, a nesting ring 33 is mounted on the lower end of the runner 20, and the nesting ring 33 is in rotating fit with the fourth fixing sleeve 10; as shown in fig. 6, the inner end of the first spiral spring 13 is fixedly mounted on the outer circumferential surface of the third fixing sleeve 9, and the outer end of the first spiral spring 13 is fixedly mounted on the inner circumferential surface of the nesting ring 33.
The invention envisages that the fourth sleeve 10 and the third sleeve 9 have the effect of increasing the stability of the rotating wheel 20 and of the winding wheel 5.
As shown in fig. 8, the winding wheel 5 has a third mounting groove 32 formed on an upper end surface thereof, a first shaft hole 31 formed on a lower end surface of the third mounting groove 32, a second mounting groove 30 formed on a circular surface of the first shaft hole 31, and the first shaft hole 31 engaged with the first shaft 12; as shown in fig. 6, the inner end of the second spiral spring 19 is fixedly installed on the outer circumferential surface of the first rotating shaft 12, and the outer end of the second spiral spring 19 is fixedly installed on the circumferential surface of the second installation groove 30.
As shown in fig. 8, a centrifugal groove 23 is formed on a circular surface of the third mounting groove 32, one end of the centrifugal block 15 is slidably mounted in the centrifugal groove 23, and a return spring 24 is mounted between one end of the centrifugal block 15 located in the centrifugal groove 23 and an inner end surface of the centrifugal groove 23.
As shown in fig. 7 and 9, a first circular hole 25 is formed in the mounting shell 17, the mounting shell 17 is fixedly mounted on the first rotating shaft 12 through the first circular hole 25, and the first limiting block 21 and the second limiting block 22 are mounted on a circular surface of the mounting shell 17; the centrifugal block 15 is matched with the first limiting block 21 and the second limiting block 22.
As shown in fig. 9, the mounting case 17 is provided with a sliding groove 26 through which the stopper bar 40 passes.
As shown in fig. 11, a second gear 42 is mounted on the upper end of the third rotating shaft 36, the mounting rotating shaft 44 is rotatably mounted in the housing 1, and a third gear 43 is fixedly mounted on one end of the mounting rotating shaft 44 and is meshed with the second gear 42; the first gear 35 is fixedly installed at the other end of the installation rotating shaft 44; the rack 34 is fixedly arranged on the transmission disc 16, and the rack 34 is meshed with the first gear 35; the diameter of the first gear 35 is larger than the diameter of the third gear 43.
In the invention, when the third rotating shaft 36 rotates, the third rotating shaft 36 can drive the second gear 42 to rotate, the second gear 42 rotates to drive the third gear 43 to rotate, the third gear 43 rotates to drive the installation rotating shaft 44 to rotate, the installation rotating shaft 44 rotates to drive the first gear 35 to rotate, the first gear 35 rotates to drive the rack 34 to move, the rack 34 drives the transmission disc 16 to move, the transmission disc 16 slides to drive the installation disc 18 to slide up and down through the T-shaped ring 39, the installation disc 18 slides to drive the limiting strip 40 arranged on the installation disc to slide, and further the rotation limiting between the winding wheel 5 and the first rotating shaft 12 is controlled.
As shown in fig. 8, the winding wheel 5 has a first mounting groove 28 for rotatably engaging with the rotor 20.
The winding wheel 5 is provided with a clamping groove 27 matched with the limiting strip 40. When the lower end of the limiting strip 40 is matched with the clamping groove 27, the winding wheel 5, the first rotating shaft 12 and the rotating wheel 20 are integrated in rotation; when the lower end of the limiting strip 40 is separated from the clamping groove 27, the winding wheel 5 is released from the rotation limitation with the first rotating shaft 12 and the rotating wheel 20.
The second spiral spring 19 has a pre-pressure.
As shown in fig. 12, the first rotating shaft 12 is provided with a guide groove 41 slidably engaged with the position-limiting bar 40.
The specific working process is as follows: when the anti-falling device designed by the invention is used, when the steel wire rope 3 is pulled out through the hook 4, the steel wire rope 3 can drive the winding wheel 5 to rotate, and because the lower end of the limiting strip 40 is positioned in the clamping groove 27 in the initial state, the winding wheel 5 and the rotating wheel 20 rotate integrally, the winding wheel 5 can drive the rotating wheel 20 to rotate through the limiting strip 40, the rotating wheel 20 rotates to drive the ratchet wheel 11 to rotate, the ratchet wheel 11 rotates to toggle the pawl 14 through the teeth on the ratchet wheel and the matched end of the ratchet wheel 11, and meanwhile, the first volute spiral spring 13 is compressed; therefore, after the falling protector is used, the steel wire rope 3 is consistently in a tight state in the moving process of a worker; however, since the first spiral spring 13 has a small elastic coefficient, the first spiral spring 13 has a relatively weak traction force to the worker through the wire rope 3.
If in the using process, when a worker falls, the steel wire rope 3 is quickly pulled out, the winding wheel 5 rotates quickly, the winding wheel 5 rotates to drive the rotating wheel 20 to rotate through the limiting strip 40, and the rotating wheel 20 drives the ratchet wheel 11 to rotate quickly; during the rotation process, if the ratchet wheel 11 pulls the pawl 14 by a small amplitude, the limiting strip 40 is not separated from the clamping groove 27 when the other end of the pawl 14 is matched and pressed by teeth of the ratchet wheel 11; if the rotating speed of the ratchet wheel 11 is too fast, so that the swing amplitude of the pawl 14 is increased, the other end of the pawl 14 is matched with teeth on the ratchet wheel 11, namely, the teeth on the ratchet wheel 11 can extrude the pawl 14 to press the pawl 14 downwards as long as the other end of the pawl 14 is in point contact with the ratchet wheel 11; the downward pressure is equivalent to the gravity of a human body, so that the downward pressure is relatively large enough to overcome the resistance between the limiting strip 40 and the clamping groove 27 in the swinging process of the pawl 14; the pawl 14 swings when being pressed, the pawl 14 swings to drive the third rotating shaft 36 to rotate, the third rotating shaft 36 drives the second gear 42 to rotate, the second gear 42 rotates to drive the third gear 43 to rotate, the third gear 43 rotates to drive the mounting rotating shaft 44 to rotate, the mounting rotating shaft 44 rotates to drive the first gear 35 to rotate, the first gear 35 rotates to drive the rack 34 to move, the rack 34 drives the transmission disc 16 to move, the transmission disc 16 slides to drive the mounting disc 18 to slide up and down through the T-shaped ring 39, the mounting disc 18 slides to drive the limiting strip 40 mounted on the mounting disc to slide, and the limiting of the winding wheel 5 and the rotating wheel 20 is relieved; after the ratchet wheel 11 and the pawl 14 are completely limited and clamped, the rotating speed of the winding wheel 5 is increased relative to the original speed along with the falling of a person; when the winding wheel 5 rotates, the winding wheel 5 drives the centrifugal block 15 to rotate, and the centrifugal block 15 moves outwards under the stress; the outward movement of the centrifugal block 15 can be in contact fit with the second limiting block 22, the centrifugal block 15 is blocked, the rotating wheel 20 is blocked by the pawl 14, the winding wheel 5 is blocked by the mounting shell 17 through the limiting of the centrifugal block 15 and the second limiting block 22, the mounting shell 17, the second rotating shaft and the rotating wheel 20 are integrated, the winding wheel 5 is in a blocked state, the falling of a falling worker is blocked, the falling worker cannot fall continuously, and the anti-falling effect is achieved.
When the ratchet wheel 11 is locked by the pawl 14, the released steel wire rope 3 on the winding wheel 5 extends out by a length a, and after the winding wheel 5 and the rotating wheel 20 are released from limiting, the winding wheel 5 continues to rotate rapidly, so that the centrifugal block 15 and the second limiting block 22 are locked; the steel wire rope 3 on the winding wheel 5 is continuously released for a length b in the process; after the pawl 14 and the ratchet wheel 11 are clamped, the steel wire rope 3 can be quickly pulled out by a length b; that is, no matter how fast the worker pulls the wire rope 3, the wire rope 3 having the length b after the pawl 14 and the ratchet 11 are stuck can be pulled out, and the process is independent of the speed, so the normal use of the worker is not affected. Compared with the traditional falling protector, a worker can quickly pull the steel wire rope 3, and the steel wire rope 3 can extend out by a longer length, so that the worker can operate quickly.
Claims (9)
1. A convenient falling protector comprises a shell, an elastic sleeve, a steel wire rope, a hook, a winding wheel, a lifting ring, a ratchet wheel and a pawl, wherein the lifting ring is fixedly arranged at one end outside the shell, and the elastic sleeve is arranged at the other end outside the shell; the winding wheel is rotatably arranged in the shell, a steel wire rope is wound on the winding wheel, one end of the steel wire rope penetrates out of the shell and is positioned outside the shell through the elastic sleeve; one end of the steel wire rope positioned outside the shell is provided with a hook; the ratchet wheel is rotatably arranged in the shell, the pawl is arranged in the shell in a swinging mode, and two ends of the pawl are matched with the ratchet wheel; a plate spring and a limiting clamping block for limiting the pawl are arranged between the pawl and the shell; the method is characterized in that: two ends of the first rotating shaft are rotatably arranged in the shell, and the winding wheel is rotatably arranged on the first rotating shaft; a second scroll spring is arranged between the winding wheel and the first rotating shaft; a centrifugal block is arranged on the winding wheel, and two first limiting blocks and two second limiting blocks are arranged on the first rotating shaft; the centrifugal block is matched with the first limiting block and the second limiting block; the rotating wheel is provided with a second circular hole, the rotating wheel is fixedly arranged at the lower end of the first rotating shaft through the second circular hole, and the rotating wheel is in rotating fit with the winding wheel; a first volute spiral spring is arranged between the rotating wheel and the shell; when the steel wire rope is not pulled out, the centrifugal block is contacted with one of the two first limiting blocks under the action of the second volute spiral spring, and the sliding-out length of the centrifugal block and the second limiting block do not reach a matching state; the ratchet wheel is fixedly arranged on one side of the rotating wheel; the rotating wheel rotates to drive the ratchet wheel to rotate;
the mounting disc is slidably mounted on the first rotating shaft, the mounting disc is fixedly provided with a limiting strip, and the limiting strip is in sliding fit with the first rotating shaft; one end of the limiting strip, which is far away from the mounting disc, is in limiting fit with the winding wheel; the transmission disc is slidably mounted on the first rotating shaft, the transmission disc is connected with the mounting disc through a T-shaped ring, one end of the T-shaped ring is fixedly mounted on the transmission disc, and the other end of the T-shaped ring is in rotating fit with the mounting disc; the pawl swings to drive the transmission disc to slide relative to the first rotating shaft through gear transmission;
the gear transmission comprises a third rotating shaft, a second gear, an installation rotating shaft and a rack; the upper end of the third rotating shaft is provided with a second gear, the mounting rotating shaft is rotatably arranged in the shell, and the third gear is fixedly arranged at one end of the mounting rotating shaft and is meshed with the second gear; the first gear is fixedly arranged at the other end of the mounting rotating shaft; the rack is fixedly arranged on the transmission disc and meshed with the first gear; the diameter of the first gear is larger than that of the third gear;
the pawl is fixedly arranged on the third rotating shaft.
2. The fall arrester of claim 1 wherein: and a second fixing sleeve is arranged on the lower end face in the shell, and the lower end of the third rotating shaft is rotatably arranged in the second fixing sleeve.
3. The fall arrester of claim 1 wherein: a first fixing sleeve is arranged on the upper end surface in the shell, and a third fixing sleeve is arranged on the lower end surface; the upper end and the lower end of the first rotating shaft are respectively and rotatably arranged in the first fixing sleeve and the third fixing sleeve.
4. A fall arrester as claimed in claim 3, wherein: a fourth fixed sleeve is arranged on the lower end face in the shell, a nested ring is arranged at the lower end of the rotating wheel, and the nested ring is in rotating fit with the fourth fixed sleeve; the inner end of the first scroll spring is fixedly arranged on the outer circular surface of the third fixing sleeve, and the outer end of the first scroll spring is fixedly arranged on the inner circular surface of the nested ring.
5. The fall arrester of claim 1 wherein: a third mounting groove is formed in the upper end face of the winding wheel, a first shaft hole is formed in the lower end face of the third mounting groove, a second mounting groove is formed in the circular face of the first shaft hole, and the first shaft hole is matched with the first rotating shaft; the inner end of the second scroll spring is fixedly arranged on the outer circular surface of the first rotating shaft, and the outer end of the second scroll spring is fixedly arranged on the circular surface of the second mounting groove;
a centrifugal groove is formed in the circular surface of the third mounting groove, one end of a centrifugal block is slidably mounted in the centrifugal groove, and a return spring is mounted between one end of the centrifugal block, which is positioned in the centrifugal groove, and the inner end surface of the centrifugal groove;
a first circular hole is formed in the mounting shell, the mounting shell is fixedly mounted on the first rotating shaft through the first circular hole, and the first limiting block and the second limiting block are mounted on the circular surface of the mounting shell; the centrifugal block is matched with the first limiting block and the second limiting block;
the mounting shell is provided with a sliding groove for the limiting strip to pass through.
6. The fall arrester of claim 1 wherein: the winding wheel is provided with a first mounting groove for the rotating wheel to rotate and match.
7. The fall arrester of claim 1 wherein: the winding wheel is provided with a clamping groove matched with the limiting strip.
8. The fall arrester of claim 1 wherein: the second scroll spring has a pre-pressure.
9. The fall arrester of claim 1 wherein: the first rotating shaft is provided with a guide groove in sliding fit with the limiting strip.
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CN111956966B true CN111956966B (en) | 2021-10-15 |
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CN112807579B (en) * | 2021-02-20 | 2025-02-11 | 中国铁路设计集团有限公司 | A toothed disc connector |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19611748A1 (en) * | 1996-03-25 | 1997-10-09 | Autoliv Dev | Safety belt winding mechanism with comfort feature |
US5927438A (en) * | 1996-09-30 | 1999-07-27 | Ostrobrod; Meyer | Personnel lifting-lowering system |
CN200977350Y (en) * | 2006-11-08 | 2007-11-21 | 上海森平机械科技有限公司 | Steel wire rate-difference fall-proof device |
CN200995007Y (en) * | 2006-11-08 | 2007-12-26 | 上海森平机械科技有限公司 | High-sensitivity speed-differential safety hook |
CN202822533U (en) * | 2012-10-22 | 2013-03-27 | 乐清市力士安全器材制造有限公司 | Speed difference automatic controller |
KR20130125966A (en) * | 2012-05-10 | 2013-11-20 | 주식회사 코브 인터내셔날 | Brake assembly for a self-retracting lifeline |
EP2754466A1 (en) * | 2013-01-15 | 2014-07-16 | Zedel | Fall-arresting safety apparatus on a rope with blocking function |
CN206261962U (en) * | 2016-11-25 | 2017-06-20 | 陕西工业职业技术学院 | Unlocking type catching device |
GB201805403D0 (en) * | 2018-04-02 | 2018-05-16 | Hsu Shi Chen | Mounting type high altitude movement fall arrester |
CN209437915U (en) * | 2018-12-07 | 2019-09-27 | 广西电网有限责任公司桂林供电局 | Livewire work falling proof device |
CN210813598U (en) * | 2019-10-07 | 2020-06-23 | 南京林业大学 | Buffering formula speed difference anti-falling device based on leaf spring |
CN211169660U (en) * | 2019-11-13 | 2020-08-04 | 金华捷科工具有限公司 | Multi-pawl type speed difference device |
-
2020
- 2020-08-20 CN CN202010842654.4A patent/CN111956966B/en active Active
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19611748A1 (en) * | 1996-03-25 | 1997-10-09 | Autoliv Dev | Safety belt winding mechanism with comfort feature |
US5927438A (en) * | 1996-09-30 | 1999-07-27 | Ostrobrod; Meyer | Personnel lifting-lowering system |
CN200977350Y (en) * | 2006-11-08 | 2007-11-21 | 上海森平机械科技有限公司 | Steel wire rate-difference fall-proof device |
CN200995007Y (en) * | 2006-11-08 | 2007-12-26 | 上海森平机械科技有限公司 | High-sensitivity speed-differential safety hook |
KR20130125966A (en) * | 2012-05-10 | 2013-11-20 | 주식회사 코브 인터내셔날 | Brake assembly for a self-retracting lifeline |
CN202822533U (en) * | 2012-10-22 | 2013-03-27 | 乐清市力士安全器材制造有限公司 | Speed difference automatic controller |
EP2754466A1 (en) * | 2013-01-15 | 2014-07-16 | Zedel | Fall-arresting safety apparatus on a rope with blocking function |
CN206261962U (en) * | 2016-11-25 | 2017-06-20 | 陕西工业职业技术学院 | Unlocking type catching device |
GB201805403D0 (en) * | 2018-04-02 | 2018-05-16 | Hsu Shi Chen | Mounting type high altitude movement fall arrester |
CN209437915U (en) * | 2018-12-07 | 2019-09-27 | 广西电网有限责任公司桂林供电局 | Livewire work falling proof device |
CN210813598U (en) * | 2019-10-07 | 2020-06-23 | 南京林业大学 | Buffering formula speed difference anti-falling device based on leaf spring |
CN211169660U (en) * | 2019-11-13 | 2020-08-04 | 金华捷科工具有限公司 | Multi-pawl type speed difference device |
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