CN215084426U

CN215084426U - High altitude construction protection device for construction

Info

Publication number: CN215084426U
Application number: CN202120516060.4U
Authority: CN
Inventors: 黄奎彰; 黄贵; 张皆科; 裴圣瑞; 李盛嘉; 唐刘永
Original assignee: Guangxi Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Current assignee: Guangxi Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-12-10
Anticipated expiration: 2031-03-11

Abstract

The utility model discloses a high-altitude operation protection device for building construction, which comprises an installation fixing component (1), a drive following component (2), a safety trigger component (3) and a deceleration brake component (4); the installation fixing assembly comprises a shell (11), a safety rope (12), a connecting rope (15) and a safety lock catch (16), the safety rope penetrates through the shell from top to bottom, the driving following assembly and the safety triggering assembly are arranged in the shell and are clamped on the safety rope in a rolling mode, one end of the connecting rope is fixedly connected with the shell through a rope penetrating opening, and the other end of the connecting rope is located outside the shell and is fixedly connected with the safety lock catch; the speed reduction brake component is arranged in the shell and is positioned beside the safety trigger component, so that the speed reduction brake component and the safety trigger component clamp the safety rope, and a safety switch (49) of the speed reduction brake component extends out of the shell. The utility model discloses can provide the helping hand at aerial working's climbing in-process, can reduce the falling speed through the safety trigger subassembly when descending to stop the buffering of subassembly through the speed reduction and fall the power.

Description

High altitude construction protection device for construction

Technical Field

The utility model relates to a construction appurtenance especially relates to an aerial working protection device for construction.

Background

According to the national standard regulation: the operation at a high place where the falling height is more than 2m (including 2m) of the falling height reference plane is called high place operation. High-altitude operation is common in many industrial fields, especially in building construction engineering. If the operation height is higher, constructor need adopt the safety rope usually in order to avoid the risk of falling, nevertheless constructor upwards or climb downwards according to the operation demand needs, and the unable nimble length of adjusting of safety rope of prior art also can't provide the helping hand of climbing, influences constructor's operation altitude control, and then influences the efficiency of construction. Simultaneously, prior art's safety rope lacks locking structure, if constructor takes place when falling accident, the inertia when constructor still can be fallen injures, and safety in utilization is relatively poor.

Disclosure of Invention

An object of the utility model is to provide a high altitude construction protection device for construction can provide initiative helping hand at high altitude construction's climbing in-process, can reduce the falling speed through the safety trigger subassembly at the in-process that falls simultaneously to stop the subassembly through the speed reduction and cushion the power of falling, prevent that constructor accident from falling and receive the injury in-process.

The utility model discloses a realize like this:

a high-altitude operation protection device for building construction comprises a mounting and fixing component, a driving following component, a safety triggering component and a deceleration brake component; the installation fixing assembly comprises a shell, a safety rope, a connecting rope and a safety lock catch, the safety rope penetrates through the shell from top to bottom, the driving following assembly and the safety triggering assembly are arranged in the shell, and the driving following assembly and the safety triggering assembly are both clamped on the safety rope in a rolling mode so that the safety rope can be connected with the shell in a relative sliding mode; one end of the connecting rope is arranged in the shell and fixedly connected with the shell, and the other end of the connecting rope is positioned outside the shell and fixedly connected with the safety lock catch; the speed reduction braking component is arranged in the shell and is positioned beside the safety triggering component, so that the speed reduction braking component and the safety triggering component can be clamped on two sides of the safety rope, and the safety rope can be fixedly connected with the shell relatively.

The drive following assembly comprises a motor, a first gear, a second gear and a third gear; the motor is fixedly arranged on the inner wall of the shell, and the first gear is coaxially arranged on an output shaft of the motor and synchronously rotates with the output shaft of the motor; the second gear and the third gear are respectively arranged on the upper part of the inner wall of the shell through wheel shafts, in addition, the second gear is in meshing transmission with the first gear, and the second gear and the third gear are clamped on two sides of the upper part of the safety rope in a rolling way.

The shell is provided with a battery bin, and the motor is electrically connected with a battery arranged in the battery bin.

The safety trigger assembly comprises a friction disc, a trigger mechanism, a first roller, a trigger rod and a lifting speed reducing mechanism; the friction disc and the first roller are respectively arranged at the lower part of the inner wall of the shell through wheel shafts, the friction disc and the first roller are clamped at two sides of the lower part of the safety rope in a rolling manner, and the triggering mechanism can be elastically arranged in the friction disc; a U-shaped groove is formed in the shell and penetrates through the front end face of the shell, the lifting and speed reducing mechanism is movably embedded in the U-shaped groove, and the lower portion of the safety rope is wound around the lifting and speed reducing mechanism to enable the safety rope to be lifted and slide along the U-shaped groove through the lifting and speed reducing mechanism; the trigger rod is rotatably arranged on the inner wall of the shell, one end of the trigger rod is positioned below the friction disc and can be in contact with the trigger mechanism which is bounced to the outside of the friction disc, and the other end of the trigger rod can be bounced to be connected with the lifting speed reducing mechanism in the U-shaped groove.

The triggering mechanism comprises a first spring and an elastic block, the elastic block is of a V-shaped structure, and the middle part of the elastic block is connected with a wheel shaft of the friction disc through the first spring so that the elastic block rotates synchronously with the friction disc; one end of the elastic block is rotatably connected to the friction disc, a trigger through hole is formed in the friction disc, and the other end of the elastic block can be bounced inside and outside the friction disc through the trigger through hole.

The number of the trigger through holes is consistent with that of the trigger mechanisms, and first springs of the trigger mechanisms are uniformly distributed on a wheel shaft of the friction disc in the circumferential direction.

And a shaft sleeve is arranged on a wheel shaft of the friction disc, and a first spring of the trigger mechanism is connected to the shaft sleeve.

A plurality of contact blocks are arranged on the outer wall of the friction disc at intervals and are in sliding contact with the safety rope.

The lifting speed reducing mechanism comprises a third spring, a fourth gear, a shifting shaft and a second roller; the second roller is arranged on the inner wall of the shell through a wheel shaft and is positioned at the bending part of the U-shaped groove; the third spring is embedded in the U-shaped groove in a matching mode, one end of the third spring is fixed to one end, close to the friction disc, in the U-shaped groove, and the other end of the third spring is provided with a fourth gear, so that the fourth gear can slide in the U-shaped groove through the third spring; one end of the shifting shaft is connected to a wheel shaft of the fourth gear and slides synchronously with the fourth gear, and the other end of the shifting shaft extends to the outside of the shell through the U-shaped groove; when the fourth gear is positioned at one end, close to the friction disc, in the U-shaped groove, the safety rope is in a straightening state, and when the fourth gear is positioned at one end, far away from the friction disc, in the U-shaped groove, the safety rope is pulled and lifted between the fourth gear and the second roller wheel to form an S-shaped structure.

The speed reduction braking and stopping assembly comprises a fifth gear, a sixth gear, a seventh gear, an eighth gear, a friction wheel, a braking sheet, a fourth spring and a key switch; the fifth gear, the sixth gear and the eighth gear are respectively arranged on the inner wall of the shell through wheel shafts, the seventh gear is coaxially connected to the sixth gear, and the friction wheel is coaxially connected to the eighth gear; the fifth gear is positioned at the side of one end of the U-shaped groove of the shell, which is far away from the friction disc, and the fifth gear and the fourth gear of the safety trigger assembly can be clamped at the two sides of the safety rope in a rolling manner; one end of the sixth gear is in meshing transmission with the fifth gear, and the seventh gear is in meshing transmission with the eighth gear; one end of the brake sheet is rotatably arranged on the inner wall of the shell and is in contact connection with the eighth gear, the other end of the brake sheet is rotatably connected with the connecting rod of the key switch, and a fourth spring is arranged between the inner wall of the shell and the middle part of the brake sheet; the key switch is embedded on the shell and can slide relative to the shell.

The utility model discloses can provide initiative helping hand at high altitude construction's climbing in-process, supplementary constructor climbing, can reduce the falling speed through the safety trigger subassembly at the in-process that falls simultaneously, avoid constructor accident to fall to stop the subassembly through the speed reduction and cushion the power of falling, prevent the inertial damage of the in-process of falling, ensured high altitude construction's security and high efficiency, the simple operation, simple structure.

Drawings

FIG. 1 is a front view of the aerial work protection device for building construction of the present invention;

FIG. 2 is a sectional view of the aerial work protective device for building construction of the present invention;

FIG. 3 is a front view of the friction disk of the aerial work protective device for building construction;

fig. 4 is a front view of the deceleration braking assembly in the overhead working protection device for building construction.

In the figure, 1, a fixing component is installed; 11 a housing; 12 a safety rope; 13 a battery compartment; 14, threading a rope opening; 15 connecting a rope; 16, a safety buckle; 2 driving the following assembly; 21 a motor; 22 a holder; 23 a first gear; 24 a second gear; 25 a third gear; 3, a safety trigger component; 31 a friction disk; 32 shaft sleeves; 33 a first spring; 34 a spring block; 35 a contact block; 36 a first roller; 37 triggering a lever; 38 a second spring; 39 a third spring; 391 a fourth gear; 392 shifting a shaft; 393 a second roller; 4, a deceleration braking component; 41 a fifth gear; 42 a sixth gear; 43 a seventh gear; 44 eighth gear; 45 friction wheels; 46 a brake sheet; 47 a fourth spring; 48 hinged supports; 49 push-button switches.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

Referring to fig. 1 and 2, the overhead working protection device for building construction comprises a mounting and fixing component 1, a driving following component 2, a safety triggering component 3 and a deceleration brake component 4; the installation fixing component 1 comprises a shell 11, a safety rope 12, a connecting rope 15 and a safety lock catch 16, wherein the safety rope 12 vertically penetrates through the shell 11, the driving following component 2 and the safety trigger component 3 are arranged in the shell 11, and the driving following component 2 and the safety trigger component 3 are both clamped on the safety rope 12 in a rolling manner, so that the safety rope 12 can be in relative sliding connection with the shell 11; a rope threading opening 14 is formed at the right lower side of the front end face of the shell 11, one end of a connecting rope 15 is arranged in the shell 11 through the rope threading opening 14 and is fixedly connected with the shell 11, and the other end of the connecting rope 15 is positioned outside the shell 11 and is fixedly connected with a safety lock catch 16; the speed reduction brake component 4 is arranged in the shell 11, the speed reduction brake component 4 is arranged beside the safety trigger component 3, so that the speed reduction brake component 4 and the safety trigger component 3 can be clamped on two sides of the safety rope 12, and the safety rope 12 can be relatively and fixedly connected with the shell 11.

The drive following assembly 2 comprises a motor 21, a fixed frame 22, a first gear 23, a second gear 24 and a third gear 25; the motor 21 is fixedly arranged on the inner wall of the shell 11 through a fixed frame 22, and a first gear 23 is coaxially arranged on an output shaft of the motor 21 and rotates synchronously with the output shaft of the motor 21; the second gear 24 and the third gear 25 are respectively installed on the upper part of the inner wall of the housing 11 through wheel shafts, the second gear 24 is in meshed transmission with the first gear 23, and the second gear 24 and the third gear 25 are clamped on two sides of the upper part of the safety rope 12 in a rolling way. The second gear 24 and the third gear 25 clamp the safety rope 12 through the clamping teeth, and the friction force between the gears and the rope is large, so that the driving force in the climbing process is stable and reliable.

The battery compartment 13 is installed on the left side of the housing 11, the motor 21 is electrically connected with a battery arranged in the battery compartment 13, the battery can provide power for the motor 21, and a switch of the motor 21 can be embedded in the housing 11 and used for controlling the switch of the motor 21.

The safety trigger component 3 comprises a friction disc 31, a trigger mechanism, a first roller 36, a trigger rod 37 and a lifting speed reducing mechanism; the friction disc 31 and the first roller 36 are respectively installed at the lower part of the inner wall of the shell 11 through an axle, the friction disc 31 and the first roller 36 are clamped at two sides of the lower part of the safety rope 12 in a rolling manner, and the triggering mechanism can be elastically installed in the friction disc 31; a U-shaped groove is formed in the left lower side of the shell 11 and penetrates through the front end face of the shell 11, the lifting and decelerating mechanism is movably embedded in the U-shaped groove, and the lower portion of the safety rope 12 is wound around the lifting and decelerating mechanism so that the safety rope 12 can be lifted and slid along the U-shaped groove through the lifting and decelerating mechanism; the trigger rod 37 is rotatably mounted on the inner wall of the housing 11 through a pin and can rotate around the pin, one end of the trigger rod 37 is located below the friction disc 31 and can be in contact with a trigger mechanism which is sprung to the outside of the friction disc 31, and the other end of the trigger rod 37 can be sprung to be in a U-shaped groove and connected with a lifting speed reduction mechanism. The other end of the trigger rod 37 can be hooked and pulled by a hook, locking and lifting speed reducing mechanism in the form of a draw hook and the like.

Referring to fig. 3, the triggering mechanism includes a first spring 33 and a spring block 34, the spring block 34 is of a V-shaped structure, and a middle portion of the spring block 34 is connected to a wheel axle of the friction disc 31 through the first spring 33, so that the spring block 34 rotates synchronously with the friction disc 31; one end of the elastic block 34 is rotatably connected to the friction disc 31 through a pin shaft, a triggering through hole is formed in the friction disc 31, and the other end of the elastic block 34 can be elastically moved inside and outside the friction disc 31 through the triggering through hole. The spring block 34 can be rapidly contacted with the trigger rod 37 by popping, so that the trigger rod 37 rotates to trigger the lifting and pulling speed reducing mechanism to reduce the speed, and the use is convenient. The elasticity of the first spring 33 and the weight of the elastic block 34 can be determined according to the rotation speed and the size of the friction disc 31, so that when the friction disc 31 reaches a certain rotation speed, the elastic block 34 can extend out of the friction disc 31 from the triggering through hole under the stretching action of the first spring 33, and the purpose of automatic speed reduction is achieved.

Preferably, the triggering mechanisms can be provided with a plurality of groups, the number of the triggering through holes is consistent with that of the triggering mechanisms, and the first springs 33 of the plurality of groups of triggering mechanisms are uniformly distributed on the wheel shaft of the friction disc 31 in the circumferential direction. The trigger mechanism can be provided with 3 groups, the included angle between the first springs 33 of two adjacent groups of trigger mechanisms is 120 degrees, and the purpose of rapid speed reduction can be achieved through multiple triggers of the trigger mechanisms.

The axle of the friction disc 31 is provided with a shaft sleeve 32, and a first spring 33 of the trigger mechanism is connected to the shaft sleeve 32, so that the trigger mechanism is convenient to mount.

The outer wall of the friction disc 31 is provided with a plurality of contact blocks 35 at intervals, and the contact blocks 35 are in sliding contact with the safety rope 12, so that the deceleration effect during descending is improved.

The lifting speed reducing mechanism comprises a third spring 39, a fourth gear 391, a shifting shaft 392 and a second roller 393; the second roller 393 is mounted on the inner wall of the housing 11 through a wheel shaft, and the second roller 393 is positioned at the bending part of the U-shaped groove; the third spring 39 is embedded in the U-shaped groove in a matching mode, one end of the third spring 39 is fixed to one end, close to the friction disc 31, in the U-shaped groove, and the other end of the third spring 39 is provided with a fourth gear 391, so that the fourth gear 391 can slide in the U-shaped groove through the third spring 39; one end of the shift shaft 392 is connected to a wheel shaft of the fourth gear 391 and slides synchronously with the fourth gear 391, and the other end of the shift shaft 392 extends to the outside of the housing 11 through a U-shaped groove; when the fourth gear 391 is located at one end of the U-shaped groove close to the friction disc 31, the safety rope 12 is in a straightened state, and when the fourth gear 391 is located at one end of the U-shaped groove far from the friction disc 31, the safety rope 12 is pulled between the fourth gear 391 and the second roller 393 to form an S-shaped structure, and the contact area and the friction force between the safety rope 12 and the fourth gear 391 and the second roller 393 are increased through the S-shaped structure, so that an effective speed reduction effect is achieved.

Preferably, the first roller 36 and the second roller 393 are both rollers with concave outer side walls, so that the safety rope 12 is ensured to be smooth and unobstructed when passing through the first roller 36 and the second roller 393.

The second spring 38 is connected between the inner walls of the trigger rod 37 and the shell 11, and the second spring 38 is located below the pin shaft of the trigger rod 37, so that the trigger rod 37 can lock the third spring 39 in the U-shaped groove, and the accidental release of the locking of the trigger rod 37 is prevented.

Referring to fig. 4, the deceleration braking assembly 4 includes a fifth gear 41, a sixth gear 42, a seventh gear 43, an eighth gear 44, a friction wheel 45, a brake sheet 46, a hinge support 48 and a key switch 49; the fifth gear 41, the sixth gear 42 and the eighth gear 44 are respectively installed on the inner wall of the shell 11 through wheel shafts, the seventh gear 43 is coaxially connected to the sixth gear 42, and the friction wheel 45 is coaxially connected to the eighth gear 44; the fifth gear 41 is positioned at the side of the U-shaped groove of the shell 11 far away from one end of the friction disc 31, and the fifth gear 41 and the fourth gear 391 of the safety trigger assembly 3 can be clamped at two sides of the safety rope 12 in a rolling way; one end of the sixth gear 42 is in meshing transmission with the fifth gear 41, and the seventh gear 43 is in meshing transmission with the eighth gear 44; one end of the brake sheet 46 is rotatably mounted on the inner wall of the housing 11 through a pin, the brake sheet 46 can rotate through the pin and is in contact connection with the eighth gear 44, and the other end of the brake sheet 46 is connected with a connecting rod of a key switch 49 through a hinged support 48; the push switch 49 is fitted to the housing 11 and can slide relative to the housing 11.

And a fourth spring 47 is arranged between the inner wall of the shell 11 and the middle part of the brake sheet 46, so that the brake sheet 46 is convenient to reset.

The utility model discloses a use method is:

fix the upper end of safety rope 12 high department at the construction site earlier, then fixed safety hasp 16 and constructor's safety braces, safety hasp 16 can adopt among the prior art with safety braces assorted hasp structure, ensure the utility model discloses with the construction personnel between the safety braces reliability of wearing. When a constructor climbs, the motor 21 can be started, the motor 21 drives the first gear 23 to rotate, the first gear 23 drives the second gear 24 to rotate, the second gear 24 and the third gear 25 are clamped on two sides of the safety rope 12 in a rolling mode, and relative movement between the gears and the rope is achieved through friction force between the second gear 24, the third gear 25 and the safety rope 12, so that the second gear 24 and the third gear 25 move upwards along the safety rope 12, the shell 11 can move along with the constructor when the constructor climbs upwards, and certain assistance can be given to the constructor.

When a constructor descends, the safety rope 12 moves upwards relative to the friction disc 31, the safety rope 12 drives the friction disc 31 to rotate anticlockwise, when the descending speed is higher than the safety speed, the rotation speed of the friction disc 31 is high, the first spring 33 stretches under the action of centrifugal force, the elastic block 34 is ejected out of the friction disc 31 from the trigger through hole and stirs the trigger rod 37, the trigger rod 37 rotates around the pin shaft, the third spring 39 compressed in the U-shaped groove is released, the third spring 39 rapidly stretches and drives the fourth gear 391 and the shifting shaft 392 to slide in the U-shaped groove in the shell 11 to the end far away from the friction disc 31. The safety rope wound around the lifting and reducing mechanism is lifted in the sliding process of the fourth gear 391, the safety rope 12 is squeezed among the second roller 393, the fourth gear 391 and the fifth gear 41, the lifting and reducing mechanism is lifted to form an inverted S-shaped structure, and the relative speed between the safety rope 12 and the shell 11 is rapidly reduced through the friction force among the second roller 393, the fourth gear 391 and the fifth gear 41 and the safety rope 12. The fifth gear 41 rotates to drive the sixth gear 42, the seventh gear 43 and the sixth gear 42 rotate synchronously and drive the eighth gear 44 to rotate, the friction wheel 45 and the eighth gear 44 rotate synchronously, and under the pressure action of the fourth spring 47, the brake sheet 46 is in friction contact with the rotating friction wheel 45, so that the fifth gear 41 is decelerated, and the purpose of buffering falling is achieved.

After the falling speed is reduced, the rotating speed of the friction disc 31 is reduced, the first spring 33 contracts and resets and the elastic block 34 is retracted into the friction disc 31, a constructor can press the key switch 49, the key switch 49 drives the brake sheet 46 to rotate through the hinged support 48 and extrudes the friction wheel 45, the friction force between the friction wheel 45 and the brake sheet 46 is increased, the friction wheel 45 stops rotating, and the purpose of safe braking is achieved. After the safety brake, a constructor can toggle the toggle shaft 392 to the bottom end of the trigger rod 37 along the U-shaped groove, the third spring 39 is compressed and is occluded and locked by the trigger rod 37, and the safety brake is released.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A high altitude construction protection device for construction, characterized by: comprises a mounting and fixing component (1), a driving and following component (2), a safety trigger component (3) and a deceleration and brake component (4); the installation fixing component (1) comprises a shell (11), a safety rope (12), a connecting rope (15) and a safety lock catch (16), wherein the safety rope (12) penetrates through the shell (11) up and down, the driving following component (2) and the safety triggering component (3) are arranged in the shell (11), and the driving following component (2) and the safety triggering component (3) are both clamped on the safety rope (12) in a rolling manner, so that the safety rope (12) can be in relative sliding connection with the shell (11); one end of the connecting rope (15) is arranged in the shell (11) and is fixedly connected with the shell (11), and the other end of the connecting rope (15) is positioned outside the shell (11) and is fixedly connected with a safety lock catch (16); the speed reduction brake component (4) is arranged in the shell (11), the speed reduction brake component (4) is arranged beside the safety trigger component (3), so that the speed reduction brake component (4) and the safety trigger component (3) can be clamped on two sides of the safety rope (12), and the safety rope (12) can be relatively and fixedly connected with the shell (11).

2. The overhead working protector for building construction according to claim 1, wherein: the drive following assembly (2) comprises a motor (21), a first gear (23), a second gear (24) and a third gear (25); the motor (21) is fixedly arranged on the inner wall of the shell (11), and the first gear (23) is coaxially arranged on the output shaft of the motor (21) and rotates synchronously with the output shaft of the motor (21); the second gear (24) and the third gear (25) are respectively arranged on the upper part of the inner wall of the shell (11) through wheel shafts, the second gear (24) is in meshing transmission with the first gear (23), and the second gear (24) and the third gear (25) are clamped on two sides of the upper part of the safety rope (12) in a rolling mode.

3. The overhead working protection device for building construction according to claim 2, wherein: the shell (11) is provided with a battery compartment (13), and the motor (21) is electrically connected with a battery arranged in the battery compartment (13).

4. The overhead working protector for building construction according to claim 1, wherein: the safety trigger assembly (3) comprises a friction disc (31), a trigger mechanism, a first roller (36), a trigger rod (37) and a lifting speed reducing mechanism; the friction disc (31) and the first roller (36) are respectively installed on the lower portion of the inner wall of the shell (11) through a wheel shaft, the friction disc (31) and the first roller (36) are clamped on two sides of the lower portion of the safety rope (12) in a rolling mode, and the triggering mechanism can be installed in the friction disc (31) in a springing mode; a U-shaped groove is formed in the shell (11), the U-shaped groove penetrates through the front end face of the shell (11), the lifting and speed reducing mechanism is movably embedded in the U-shaped groove, and the lower portion of the safety rope (12) is wound around the lifting and speed reducing mechanism, so that the safety rope (12) can be lifted and slid along the U-shaped groove through the lifting and speed reducing mechanism; the trigger rod (37) is rotatably arranged on the inner wall of the shell (11), one end of the trigger rod (37) is positioned below the friction disc (31) and can be in contact with a trigger mechanism which is flicked to the outside of the friction disc (31), and the other end of the trigger rod (37) can be flicked to be in a U-shaped groove and connected with the lifting and decelerating mechanism.

5. The overhead working protector for building construction according to claim 4, wherein: the triggering mechanism comprises a first spring (33) and a spring block (34), the spring block (34) is of a V-shaped structure, and the middle part of the spring block (34) is connected with a wheel shaft of the friction disc (31) through the first spring (33) so that the spring block (34) rotates synchronously with the friction disc (31); one end of the elastic block (34) is rotatably connected to the friction disc (31), a triggering through hole is formed in the friction disc (31), and the other end of the elastic block (34) can be bounced inside and outside the friction disc (31) through the triggering through hole.

6. The overhead working protector for building construction according to claim 5, wherein: the number of the trigger mechanisms is consistent with that of the trigger mechanisms, and first springs (33) of the trigger mechanisms are uniformly distributed on a wheel shaft of the friction disc (31) in the circumferential direction.

7. An overhead working protector for building construction according to any one of claims 4 to 6 wherein: a shaft sleeve (32) is arranged on a wheel shaft of the friction disc (31), and a first spring (33) of the trigger mechanism is connected to the shaft sleeve (32).

8. The overhead working protector for building construction according to claim 4, wherein: a plurality of contact blocks (35) are arranged on the outer wall of the friction disc (31) at intervals, and the contact blocks (35) are in sliding contact with the safety rope (12).

9. The overhead working protector for building construction according to claim 4, wherein: the lifting and decelerating mechanism comprises a third spring (39), a fourth gear (391), a shifting shaft (392) and a second roller (393); the second roller (393) is mounted on the inner wall of the shell (11) through a wheel shaft, and the second roller (393) is positioned at the bending part of the U-shaped groove; the third spring (39) is embedded in the U-shaped groove in a matching mode, one end of the third spring (39) is fixed to one end, close to the friction disc (31), in the U-shaped groove, and the other end of the third spring (39) is provided with a fourth gear (391), so that the fourth gear (391) can slide in the U-shaped groove through the third spring (39); one end of the shifting shaft (392) is connected to a wheel shaft of the fourth gear (391) and slides synchronously with the fourth gear (391), and the other end of the shifting shaft (392) extends to the outside of the shell (11) through the U-shaped groove; when the fourth gear (391) is located at one end, close to the friction disc (31), in the U-shaped groove, the safety rope (12) is in a straightened state, and when the fourth gear (391) is located at one end, far away from the friction disc (31), in the U-shaped groove, the safety rope (12) is pulled between the fourth gear (391) and the second roller (393) to form an S-shaped structure.

10. The overhead working protector for building construction according to claim 1, wherein: the speed reduction braking and stopping assembly (4) comprises a fifth gear (41), a sixth gear (42), a seventh gear (43), an eighth gear (44), a friction wheel (45), a braking sheet (46), a fourth spring (47) and a key switch (49); a fifth gear (41), a sixth gear (42) and an eighth gear (44) are respectively arranged on the inner wall of the shell (11) through wheel shafts, a seventh gear (43) is coaxially connected to the sixth gear (42), and a friction wheel (45) is coaxially connected to the eighth gear (44); the fifth gear (41) is positioned at the side of one end, away from the friction disc (31), of the U-shaped groove of the shell (11), and the fifth gear (41) and a fourth gear (391) of the safety trigger assembly (3) can be clamped at two sides of the safety rope (12) in a rolling manner; one end of the sixth gear (42) is in meshing transmission with the fifth gear (41), and the seventh gear (43) is in meshing transmission with the eighth gear (44); one end of the brake sheet (46) is rotatably arranged on the inner wall of the shell (11) and is in contact connection with the eighth gear (44), the other end of the brake sheet (46) is rotatably connected with a connecting rod of the key switch (49), and a fourth spring (47) is arranged between the inner wall of the shell (11) and the middle part of the brake sheet (46); the push switch (49) is embedded on the shell (11) and can slide relative to the shell (11).