CN209885057U - A handheld safety hook of cat ladder of fleing for one's life for rural area fire control transformation promotes - Google Patents

Abstract

The utility model discloses a hand-held safety hook of escape ladder for lifting the urban village fire-fighting transformation, which comprises a hook-shaped plastic steel fixing arm, a plastic steel strip-shaped rotating arm, a single-layer movable ring of the rotating arm, a double-layer spacing ring upper ring of the fixing arm, a double-layer spacing ring lower ring of the fixing arm, a fixing ring connecting grab handle, a movable ring connecting grab handle, a spacing pin nut, a rebound spring, a sponge anti-skid silica gel handle sleeve, a wrist fixing strap, a stator master rubber on the surface of the strap, and a strap fixing ring, the hook can more stably and comfortably replace two hands to hold the ladder stand, and when a user is in overstrain and accidentally looses hands, the safety hook can fix the ladder stand through the emergency rebound of the rebound spring, and the person and the ladder stand are connected through the strap cushioning spring, the wrist fixing strap and the fixing primary and secondary glue, so that falling and falling injuries at a high place are prevented, and the hook can be grasped again to continue escaping.

Description

A handheld safety hook of cat ladder of fleing for one's life for rural area fire control transformation promotes

Technical Field

The utility model relates to a safe couple is handed to cat ladder of fleing that is used for rural area fire control to reform transform to promote in city.

Background

The construction and improvement of the urban and rural fire-fighting facilities are an important step for realizing comprehensive rehabilitation, and a fire-fighting component suitable for the areas and the crowds is created according to the characteristics of the existing fire-fighting facilities in the urban and rural areas and the characteristics of ages and economic conditions of target crowds. At the present stage, a plurality of reliable fire fighting devices have the problems of overlarge volume, difficulty in storage, high price and complex use, and a plurality of old people and children are difficult to operate the fire fighting devices correctly when facing fire; in the old houses in the urban village, the economic capability of owners is insufficient, and the population is generally more than the old and children. Some low-price rope ladders have the defects of no fire prevention, easy aging, low safety coefficient, easy knotting, unstable use and the like, and particularly, the rope ladders cannot enable the users to escape efficiently when the old and the children climb and escape by using the fire-fighting rope ladder, so that fear and shaking of the rope ladders are difficult to overcome; and fire-fighting equipment such as a miniature fire-fighting cabinet is too large in size and expensive, so that local owners cannot bear the high price and cannot implement popularization. Therefore, the utility model is needed to be safe, cheap and convenient to operate, thereby improving the fire-fighting level of the village in the city.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a handheld safety hook that cooperation outer wall cat ladder of fleing used is provided, this couple can be more stable and replace both hands to hold the cat ladder comfortably, and under the condition that the user is excessively nervous and unexpected pine hand, safety hook can fix the cat ladder through the urgent resilience of rebound spring, and through band bradyseism spring, the fixed band of wrist and the primary and secondary glue of fixer come to connect people and cat ladder, prevent that the eminence from falling and injuring, and can grasp the couple again and continue the action of fleing.

In order to solve the technical problem, the utility model provides a handheld safety hook of cat ladder of fleing for lifting is reformed transform in rural area fire control, including hook-like plastic steel fixed arm (1), plastic steel strip swinging boom (2), swinging boom individual layer loose ring (3), the fixed arm double-deck spacing ring upper ring (4), the fixed arm double-deck spacing ring lower ring (5), solid fixed ring connection grab handle (6), loose ring connection grab handle (7), stop pin (8), stop pin nut (9), rebound spring (10), sponge antiskid silica gel handle cover (11), wrist fixing band (12), the stator masterbatch (13) on band surface, band fixed ring (14), band buffer spring (15), band go-between (16), grab handle cover fixing ring cutting ferrule (17), cutting ferrule set screw (18); the double-layer limiting ring upper ring 4 of the fixing arm is arranged above the rotating arm single-layer movable ring (3), the double-layer limiting ring lower ring 5 of the fixing arm is arranged below the rotating arm single-layer movable ring 3, the double-layer limiting ring upper ring (4) of the fixing arm, the double-layer limiting ring lower ring 5 of the fixing arm are aligned with a round hole in the middle of the rotating arm single-layer movable ring (3), the limiting pin (8) penetrates through the double-layer limiting ring upper ring (4) of the fixing arm, the double-layer limiting ring lower ring (5) of the fixing arm and the round hole in the middle of the rotating arm single-layer movable ring (3), the limiting pin nut (9) is rotationally fixed at the excessive part of the limiting pin, the hook-shaped plastic steel fixing arm (1) is connected with the double-layer limiting ring upper ring (4) of the fixing arm and the double-layer limiting ring lower ring (5), fixed ring joint grab handle (6) is fitted with a contraceptive ring with the double-deck spacing ring of fixed arm (4), the double-deck spacing ring of fixed arm lower ring (5) is connected and accomplishes a fixed subassembly rear end, swing ring joint grab handle (7) is connected with swing arm individual layer swing ring (3) and accomplishes a rotating assembly rear end, two sponge anti-skidding silica gel handle cover (11) cover are at fixed ring joint grab handle (6) and swing ring joint grab handle (7), the fixed annular cutting ferrule of handle cover 17 card is in on sponge anti-skidding silica gel handle cover (11), cutting ferrule set screw (18) pass the fixed annular cutting ferrule of handle cover (17), sponge anti-skidding silica gel handle cover (11) and the handheld position subassembly of completion of screwing, band buffer spring (15) one end is connected with swing ring joint grab handle (7) afterbody and accomplishes a buffer unit front end, band buffer spring (15) other end is connected with fixed ring of band (14) and accomplishes a buffer group's rear end The piece is terminal, the band fixing ring (14) passes through the band connecting ring (16) to complete the front end of a restraining component, and the wrist fixing band (12) passes through the band connecting ring (16) to complete the tail end of the restraining component to form a whole handheld safety hook of the escape ladder stand.

The utility model has the advantages that:

1. the rigid component of the hook replaces two hands to contact the crawling ladder;

2. the scissors principle is utilized to be matched with the emergency resilience of the resilience spring, the buffer spring and the wrist fixing strap, so that a user is prevented from separating from the ladder stand to cause a high-altitude falling accident when accidentally loosening the hand;

3. the product is convenient to use, has low difficulty coefficient, and is suitable for a large number of old people and children in rural areas;

4. the product has small volume, is convenient to store and does not need to be frequently checked and replaced;

5. the product has low price and is suitable for owners with relatively low urban-rural area economic income level.

Drawings

FIG. 1 is a schematic view showing the effect of a hand-held safety hook of an escape ladder lifted in the urban rural fire-fighting modification;

FIG. 2 is a schematic view of an escape ladder for lifting in urban rural fire-fighting reconstruction in an opened state by holding a safety hook;

FIG. 3 is a schematic disassembled view of the components of the hand-held safety hook of the escape ladder for improving and lifting the fire protection in rural areas in urban areas;

FIG. 4 is a schematic view of a sectional inner side of a part of a hand-held safety hook of an escape ladder for lifting in the urban rural fire-fighting modification;

the reference numbers in the figures: hook-like plastic steel fixed arm (1), plastic steel strip swinging boom (2), swinging boom individual layer activity ring (3), the double-deck spacing ring of fixed arm is fitted with a contraceptive ring (4), the double-deck spacing ring lower ring of fixed arm (5), gu fixed ring tie-up handle (6), activity ring tie-up handle (7), stop pin (8), stop pin nut (9), rebound spring (10), sponge antiskid silica gel holds handle cover (11), wrist fixed band (12), the fixed son master batch (13) on band surface, the solid fixed ring of band (14), band buffer spring (15), band go-between (16), the solid fixed ring cutting ferrule of handle cover (17), cutting ferrule set screw (18).

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Referring to fig. 1-4, the utility model provides a component for rural area village fire control transformation promotes, including hook-like plastic steel fixed arm 1, plastic steel strip swinging boom 2, swinging boom individual layer loose ring 3, the fixed arm double-deck spacing ring is fitted with a contraceptive ring 4, the fixed arm double-deck spacing ring is fitted with a contraceptive ring lower ring 5, solid fixed ring connection grab handle 6, loose collar connection grab handle 7, spacing pin 8, spacing pin nut 9, rebound spring 10, sponge antiskid silica gel grab handle cover 11, wrist fixed band 12, the fixed son's mother glue 13 on band surface, band solid fixed ring 14, band buffer spring 15, band go-between ring 16, grab handle cover fixed ring cutting ferrule 17, cutting ferrule set fixed screw 18; the tail end of the hook-shaped plastic steel fixing arm 1 is provided with an anti-skid serrated rough part; a circular groove is arranged at the contact part of the circular groove and the fixed arm double-layer limiting ring upper ring 4, and a layer of thread is arranged in the groove; and a circular groove is arranged at the contact part of the lower ring 5 of the double-layer limiting ring of the fixed arm, and a layer of thread is arranged in the groove.

The tail end of the plastic steel strip-shaped rotating arm 2 is subjected to anti-skid sawtooth-shaped rough treatment; a circular groove is arranged at the contact part of the rotating arm single-layer movable ring 3, and a layer of thread is arranged in the groove.

The inner diameter of the rotating arm single-layer movable ring 3 is the same as the diameter of the limiting pin 8; the outer diameter is the same as the head diameter of the limit pin 8; the upper and lower circular ring parts are smoothly treated and solid lubricating powder (lubricating oil and other lubricating agents) is added; has two cylindrical tenon convex parts and a layer of screw thread.

The inner diameter of the double-layer limiting ring upper ring 4 of the fixed arm is the same as the diameter of the limiting pin 8; the outer diameter is the same as the head diameter of the limit pin 8; the lower ring part is smoothened and added with solid lubricating powder (lubricating oil and other lubricating agents); has two cylindrical tenon convex parts and a layer of screw thread.

The inner diameter of the double-layer limiting ring lower ring 5 of the fixed arm is the same as the diameter of the limiting pin 8; the outer diameter is the same as the head diameter of the limit pin 8; the upper ring part is smoothened and solid lubricating powder (lubricating oil and other lubricating agents) is added; has two cylindrical tenon convex parts and a layer of screw thread.

A circular groove is formed at the contact position of the fixing ring connecting grab handle 6 and the fixed arm double-layer limiting ring upper ring 4, and a layer of threads are arranged in the groove; a circular groove is formed in the contact position of the lower ring 5 of the double-layer limiting ring of the fixed arm, and a layer of threads are arranged in the groove; a circular groove is arranged on the inner side, and threads are arranged in the groove, so that the rebound spring 10 can be screwed in and fixed; the contact part of the sponge anti-slip silica gel handle sleeve 11 is roughly treated; the tail part is provided with two clamping grooves with threads inside.

A circular groove is formed at the contact part of the movable ring connecting grab handle 7 and the rotating arm single-layer movable ring 3, and a layer of threads are arranged in the groove; a circular groove is arranged on the inner side, and threads are arranged in the groove, so that the rebound spring 10 can be screwed in and fixed; the tail part is provided with a circular groove, and the groove is internally provided with threads, so that the belt buffering spring 15 can be screwed and fixed; the contact part of the sponge anti-slip silica gel handle sleeve 11 is roughly treated; the tail part is provided with two clamping grooves with threads inside.

The head diameter of the limiting pin 8 is the same as the outer diameter of the rotating arm single-layer movable ring 3, the fixed arm double-layer limiting ring upper ring 4 and the fixed arm double-layer limiting ring lower ring 5, and the diameter is the same as the head diameter of the rotating arm single-layer movable ring 3, the fixed arm double-layer limiting ring upper ring 4 and the fixed arm double-layer limiting ring lower ring 5; the length of the toothless part is equal to the outer diameters of the rotating arm single-layer movable ring 3, the fixed arm double-layer limiting ring upper ring 4 and the fixed arm double-layer limiting ring lower ring 5, and the diameter is equal to the thickness superposition amount of the head diameter and the rotating arm single-layer movable ring 3; the length of the position with teeth is the same as the depth of the groove of the limit pin nut 9.

The outer diameter of the limit pin nut 9 is the same as the outer diameter of the rotating arm single-layer movable ring 3, the fixed arm double-layer limit ring upper ring 4 and the fixed arm double-layer limit ring lower ring 5, and the inner diameter of the limit pin nut is the same as the inner diameter of the rotating arm single-layer movable ring 3, the fixed arm double-layer limit ring upper ring 4 and the fixed arm double-layer limit ring lower ring 5; the depth of the upper groove is equal to the length of the position where the limit pin 8 has teeth, and the tooth pitch is the same.

The rebound spring 10 is screwed into the fixing ring connecting grab handle 6. The sponge anti-slip silica gel handle sleeve 11 can be sleeved with the fixed ring connecting handle 6, and the movable ring connecting handle 7; the tail has two holes through which the ferrule set screws 18 can pass.

The length of the wrist fixing belt 12 is enough to wind two layers of wrists of an adult, and the length of the wrist fixing belt is still 20 cm; the tail end of the fixing primary-secondary rubber 13 is sewed on the surface of the strap; the front end needs to be perforated and can pass through the belt connecting ring 16.

The fixing primary and secondary glue 13 on the surface of the strap has the same width as the wrist fixing strap 12; is sewn at the end of the wrist fixing band 12.

One end of the belt fixing ring 14 is provided with a circular groove, and threads are arranged in the circular groove, so that the belt buffering spring 15 can be screwed in and fixed.

The belt buffer spring 15 can be screwed into the grooves of the belt fixing ring 14 and the movable ring connecting grab handle 7.

The band connecting ring 16 is made of elastic metal wire, and can be pulled through the wrist fixing band 12 and the band fixing ring 14.

The grip handle sleeve fixing annular clamping sleeve 17 is made of elastic metal materials and can be clamped at the tail of the sponge anti-slip silica gel grip handle sleeve 11; there are two recesses through which the ferrule holding screws 18 can pass.

The cutting sleeve fixing screw 18 can pass through the fixed primary and secondary rubber 13 on the surface of the strap, the grab handle sleeve fixes the annular cutting sleeve 17 and is screwed and fixed on the fixed ring connecting grab handle 6 and the movable ring connecting grab handle 7.

The fixed arm double-layer limiting ring upper ring 4 is arranged above the rotating arm single-layer movable ring 3. The double-layer limiting ring lower ring 5 of the fixed arm is arranged below the single-layer movable ring 3 of the rotating arm.

The double-layer limiting ring upper ring 4 of the fixed arm and the double-layer limiting ring lower ring 5 of the fixed arm are aligned with the round hole in the middle of the single-layer movable ring 3 of the rotating arm. The limiting pin 8 penetrates through a round hole in the middle of the fixed arm double-layer limiting ring upper ring 4, the fixed arm double-layer limiting ring lower ring 5 and the rotating arm single-layer movable ring 5.

The limiting pin nut 9 is rotationally fixed on the excessive part of the limiting pin. The hook-shaped plastic steel fixing arm 1 is connected with the double-layer limiting ring upper ring 4 of the fixing arm and the double-layer limiting ring lower ring 5 of the fixing arm to complete the front end of the fixing arm. The plastic steel strip-shaped rotating arm 2 is connected with the rotating arm single-layer movable ring 3 to complete the front end of one rotating arm. The fixed ring connecting grab handle 6 is connected with the fixed arm double-layer limiting ring upper ring 4 and the fixed arm double-layer limiting ring lower ring 5 to complete the rear end of a fixed component. The movable ring connecting grab handle 7 is connected with the rotating arm single-layer movable ring 3 to complete the rear end of a rotating assembly.

The two sponge anti-slip silica gel handle sleeves 11 are sleeved on the fixed ring connecting handle 6 and the movable ring connecting handle 7. The grip handle sleeve fixing annular clamping sleeve 17 is clamped on the sponge anti-slip silica gel grip handle sleeve 11. The clamping sleeve fixing screw 18 penetrates through the grab handle sleeve fixing annular clamping sleeve 17 and the sponge anti-skidding silica gel grab handle sleeve 11 and is screwed to complete the handheld part assembly. One end of the belt buffer spring 15 is connected with the tail part of the movable ring connecting grab handle 7 to finish the front end of a buffer component. The other end of the belt buffering spring 15 is connected with the belt fixing ring 14 to complete one buffering assembly end.

The strap securing ring 14 passes through the strap attaching ring 16 to complete a restraining assembly front end.

The wrist fixing strap 12 passes through the strap connecting ring 16 to complete the tail end of a restraining component to form a whole hand-held safety hook of the escape ladder stand.

When in use, one user needs to have two safety hooks. The wrist fixing bridles 12 of the two safety hooks are respectively wound and fixed on the left wrist and the right wrist. When the ladder is used, the two sponge anti-slip silica gel handle sleeves 11 are pressed to enable the safety hook to be in an open state, and the safety hook replaces two hands to perform climbing action. After the hands are accidentally loosened, the user can stabilize the posture again, grasp the safety hook again and enable the hook to be in an open state to continue the escape action. In the using process, a hook is hung on the ladder to ensure the safety of emergency.

The present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit and scope of the present invention by those skilled in the art.

When the safety hook is used, a user needs to have two safety hooks, the wrist fixing bridles 12 of the two safety hooks are respectively wound and fixed on the left wrist and the right wrist, when the ladder is used, the two sponge anti-slip silica gel handle holding sleeves 11 are pressed to enable the safety hooks to be in an open state, the safety hooks are used for replacing two hands to perform climbing actions, after hands are accidentally loosened, the user can re-stabilize the posture, the safety hooks are held again, the hooks are enabled to be in the open state to continue escaping actions, and in the using process, the safety of emergency is ensured by ensuring that one hook is hung on the ladder.

Claims (10)

1. The utility model provides a handheld safety hook of cat ladder of fleing for one's life for rural area fire control transformation promotes which characterized in that: the device comprises a hook-shaped plastic steel fixing arm (1), a plastic steel strip-shaped rotating arm (2), a rotating arm single-layer movable ring (3), a fixed arm double-layer limiting ring upper ring (4), a fixed arm double-layer limiting ring lower ring (5), a fixing ring connecting handle (6), a movable ring connecting handle (7), a limiting pin (8), a limiting pin nut (9), a rebound spring (10), a sponge anti-skidding silica gel handle sleeve (11), a wrist fixing belt (12), a fixing nut rubber (13) on the surface of the belt, a belt fixing ring (14), a belt buffering spring (15), a belt connecting ring (16), a handle sleeve fixing annular clamping sleeve (17) and a clamping sleeve fixing screw (18); the double-layer limiting ring upper ring (4) of the fixing arm is arranged above the rotating arm single-layer movable ring (3), the double-layer limiting ring lower ring (5) of the fixing arm is arranged below the rotating arm single-layer movable ring (3), the double-layer limiting ring upper ring (4) of the fixing arm, the double-layer limiting ring lower ring (5) of the fixing arm are aligned with a round hole in the middle of the rotating arm single-layer movable ring (3), the limiting pin (8) penetrates through the double-layer limiting ring upper ring (4) of the fixing arm, the double-layer limiting ring lower ring (5) of the fixing arm and the round hole in the middle of the rotating arm single-layer movable ring (3), the limiting pin nut (9) is rotationally fixed at the excessive part of the limiting pin, the hook-shaped plastic steel fixing arm (1) is connected with the double-layer limiting ring upper ring (4) of the fixing arm and the double-layer limiting ring lower ring (5) of, the fixing ring connecting handle (6) is connected with the fixing arm double-layer limiting ring upper ring (4) and the fixing arm double-layer limiting ring lower ring (5) to complete the rear end of a fixing component, the movable ring connecting handle (7) is connected with the rotating arm single-layer movable ring (3) to complete the rear end of a rotating component, the two sponge anti-skidding silica gel handle sleeves (11) are sleeved on the fixing ring connecting handle (6) and the movable ring connecting handle (7), the sponge anti-skidding silica gel handle sleeve (11) is clamped by the handle sleeve fixing annular clamping sleeve (17), the clamping sleeve fixing screw (18) penetrates through the handle sleeve fixing annular clamping sleeve (17), the sponge anti-skidding silica gel handle sleeve (11) and is screwed to complete a handheld part component, one end of the belt buffer spring (15) is connected with the tail part of the movable ring connecting handle (7) to complete the front end of the buffer component, the other end of the belt buffer spring (15) is connected with the belt fixing ring (14) to complete the tail end of a buffer component, the belt fixing ring (14) penetrates through the belt connecting ring (16) to complete the front end of a restraining component, and the wrist fixing belt (12) penetrates through the belt connecting ring (16) to complete the tail end of the restraining component to form a whole escape ladder stand handheld safety hook.

2. The hand-held safety hook of the escape ladder for the fire improvement of urban villages and villages as claimed in claim 1, wherein the safety hook comprises: the tail end of the hook-shaped plastic steel fixing arm (1) is provided with an anti-skid serrated rough part; a circular groove is arranged at the contact part of the circular groove and the fixed arm double-layer limiting ring upper ring (4), and a layer of thread is arranged in the groove; a circular groove is formed in the contact part of the lower ring (5) of the double-layer limiting ring of the fixed arm, and a layer of threads are arranged in the groove; the tail end of the plastic steel strip-shaped rotating arm (2) is subjected to anti-skid sawtooth-shaped rough treatment; a circular groove is arranged at the contact part of the rotating arm single-layer movable ring (3), and a layer of thread is arranged in the groove.

3. The hand-held safety hook of the escape ladder for the fire improvement of urban villages and villages as claimed in claim 1, wherein the safety hook comprises: the inner diameter of the rotating arm single-layer movable ring (3) is the same as the diameter of the limiting pin (8); the outer diameter is the same as the head diameter of the limit pin (8); the upper and lower circular ring parts are smoothly treated and solid lubricating powder is added; two cylindrical tenon convex parts are arranged and a layer of thread is arranged; the inner diameter of the double-layer limiting ring upper ring (4) of the fixed arm is the same as the diameter of the limiting pin (8); the outer diameter is the same as the head diameter of the limit pin (8); the lower ring part is subjected to smooth treatment and solid lubricating powder is added; two cylindrical tenon convex parts are arranged and a layer of thread is arranged; the inner diameter of the double-layer limiting ring lower ring (5) of the fixed arm is the same as the diameter of the limiting pin (8); the outer diameter is the same as the head diameter of the limit pin (8); the upper ring part is subjected to smooth treatment and solid lubricating powder is added; has two cylindrical tenon convex parts and a layer of screw thread.

4. The hand-held safety hook of the escape ladder for the fire improvement of urban villages and villages as claimed in claim 1, wherein the safety hook comprises: a circular groove is formed in the contact position of the fixing ring connecting grab handle (6) and the fixed arm double-layer limiting ring upper ring (4), and a layer of threads are arranged in the groove; a circular groove is formed in the contact part of the lower ring (5) of the double-layer limiting ring of the fixed arm, and a layer of threads are arranged in the groove; the inner side of the spring is provided with a circular groove, and the groove is internally provided with threads, so that the rebound spring (10) can be screwed and fixed; the contact part of the sponge anti-slip silica gel handle sleeve (11) is roughly treated; the tail part is provided with two clamping grooves with threads inside; a circular groove is formed in the contact position of the movable ring connecting grab handle (7) and the rotating arm single-layer movable ring (3), a layer of threads are arranged in the groove, a circular groove is formed in the inner side of the groove, threads are arranged in the groove, the rebound spring (10) can be screwed and fixed, a circular groove is formed in the tail part of the groove, threads are arranged in the groove, and the bridle buffer spring (15) can be screwed and fixed; the contact part of the sponge anti-slip silica gel handle sleeve (11) is roughly treated; the tail part is provided with two clamping grooves with threads inside.

5. The hand-held safety hook of the escape ladder for the fire improvement of urban villages and villages as claimed in claim 1, wherein the safety hook comprises: the head diameter of the limiting pin (8) is the same as the outer diameter of the rotating arm single-layer movable ring (3), the fixed arm double-layer limiting ring upper ring (4) and the fixed arm double-layer limiting ring lower ring (5), and the diameter and the head diameter are the same as the inner diameter of the rotating arm single-layer movable ring (3), the fixed arm double-layer limiting ring upper ring (4) and the fixed arm double-layer limiting ring lower ring (5); the length of the toothless part is equal to the outer diameters of the rotating arm single-layer movable ring (3), the fixed arm double-layer limiting ring upper ring (4) and the fixed arm double-layer limiting ring lower ring (5), and the diameter is equal to the thickness superposition amount of the head diameter and the rotating arm single-layer movable ring (3); the length of the tooth part is the same as the depth of the groove of the limiting pin nut (9); the outer diameter of the limiting pin nut (9) is the same as the outer diameter of the rotating arm single-layer movable ring (3), the fixed arm double-layer limiting ring upper ring (4) and the fixed arm double-layer limiting ring lower ring (5), and the inner diameter of the limiting pin nut is the same as the inner diameter of the rotating arm single-layer movable ring (3), the fixed arm double-layer limiting ring upper ring (4) and the fixed arm double-layer limiting ring lower ring (5); the depth of the upper groove is equal to the length of the position where the limit pin (8) has teeth, and the tooth pitch is the same.

6. The hand-held safety hook of the escape ladder for the fire improvement of urban villages and villages as claimed in claim 1, wherein the safety hook comprises: the rebound spring (10) is screwed into the fixed ring connecting grab handle (6); the sponge antiskid silica gel handle sleeve (11) is sleeved on the fixed ring connecting handle (6), the tail part of the movable ring connecting handle (7) is provided with two holes, and the clamping sleeve fixing screw (18) penetrates through the two holes in the tail part of the movable ring connecting handle (7).

7. The hand-held safety hook of the escape ladder for the fire improvement of urban villages and villages as claimed in claim 1, wherein the safety hook comprises: the wrist fixing strap (12) is long enough to wrap two layers of wrists of an adult, and the tail end of the wrist fixing strap is sewn with fixing primary and secondary glue (13) on the surface of the wrist fixing strap; the front end needs to be punched and can pass through the belt connecting ring (16); the fixing primary and secondary glue (13) on the surface of the strap is the same as the width of the wrist fixing strap (12); is sewn at the tail end of the wrist fixing belt (12).

8. The hand-held safety hook of the escape ladder for the fire improvement of urban villages and villages as claimed in claim 1, wherein the safety hook comprises: one end of the bridle fixing ring (14) is provided with a circular groove, and threads are arranged in the bridle fixing ring, so that the bridle buffer spring (15) can be screwed in and fixed; the belt buffer spring (15) is screwed into the grooves of the belt fixing ring (14) and the movable ring connecting grab handle (7).

9. The hand-held safety hook of the escape ladder for the fire improvement of urban villages and villages as claimed in claim 1, wherein the safety hook comprises: the band connecting ring (16) is an elastic metal wire, and the band connecting ring (16) is broken off and penetrates into the wrist fixing band (12) and the band fixing ring (14); the holding handle sleeve fixing annular clamping sleeve (17) is made of elastic metal materials, is clamped at the tail of the sponge anti-slip silica gel holding handle sleeve (11), is provided with two grooves and penetrates through the clamping sleeve fixing screw (18).

10. The hand-held safety hook of the escape ladder for the fire improvement of urban villages and villages as claimed in claim 1, wherein the safety hook comprises: the clamping sleeve fixing screw (18) penetrates through the fixed primary and secondary rubber (13) on the surface of the strap and the handle sleeve to fix the annular clamping sleeve (17) and is screwed into and fixed on the fixed ring connecting handle (6) and the movable ring connecting handle (7).

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