High-altitude anti-falling device

Abstract

The invention discloses a high-altitude anti-falling device which comprises an upper fixing mechanism, a lower fixing mechanism, a steel strand, an anti-swing mechanism and an anti-falling self-locking device, the anti-falling self-locking device comprises an anti-falling self-locking shell, the anti-falling self-locking shell is provided with a channel matched with the steel strand, and a first self-locking arm, a second self-locking arm and a friction wheel are rotationally arranged on the inner side of the anti-falling self-locking shell; a retaining ring is arranged at one end of the first self-locking arm, and a linkage assembly is arranged between the first self-locking arm and the second self-locking arm. The friction wheel is in movable contact with the steel strand, the friction wheel is provided with a locking assembly for locking the friction wheel, and the locking assembly is in linkage fit with the first self-locking arm or the second self-locking arm. According to the anti-falling self-locking device, the first self-locking arm, the second self-locking arm, the friction wheel and the like are adopted, rapid self-locking can be achieved when a worker falls from high altitude, the worker is prevented from falling, and the anti-falling self-locking device is simple in structure, convenient to use, high in practicability and capable of providing powerful protection for the worker to go up and down a tower.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of power maintenance tools, and particularly relates to a high-altitude anti-falling device. BACKGROUND

[0002] In the field of long-distance power transmission, in order to maintain the line equipment, power workers often need to climb to a high place of a power transmission tower to perform high-altitude work. In order to protect the personal safety of the power workers during the process of climbing the tower and during the process of maintenance and repair, an anti-falling device needs to be arranged on the power transmission tower. Through the mode that the anti-falling device located outside the power transmission tower is kept connected with the safety belt (hook) on the body of the power worker, the power worker is prevented from accidentally falling during high-altitude work.

[0003] Chinese patent document CN220276153U discloses a high-altitude work anti-falling device, which comprises a main material, the surface of the main material is provided with a plurality of clamping plates, the clamping plates are fixed on the surface of the main material through clamping bolts, the surface of the clamping plates is provided with foot nails, one side of the clamping plates is provided with a connecting plate, the bottom end of the connecting plate is provided with a stainless steel wire, the bottom end of the stainless steel wire is provided with a basket bolt, and the surface of the main material is provided with a wind deflection device corresponding to the stainless steel wire. The upper end and the lower end of the above-mentioned anti-falling device are both fixed with the main material of the tower body through the clamping plates and the foot nails, and the stainless steel wire between the upper end and the lower end is vertical. The stainless steel wire fixed on the tower body can provide effective safety protection for the power worker during the process of climbing the tower and performing work, after the power worker connects the safety belt (hook) on the body to the climbing self-locking device.

[0004] The self-locking device of the prior art only has one self-locking arm, and its structure is relatively simple, and the self-locking capacity is insufficient during use. Therefore, the technical personnel in the field provide a high-altitude anti-falling device to solve the problems in the prior art. SUMMARY

[0005] The purpose of the present application is to provide a high-altitude anti-falling device to solve the above-mentioned problems in the prior art.

[0006] In order to achieve the above object, the application adopts the following technical scheme: a high-altitude anti-falling device, comprising an upper fixing mechanism, a lower fixing mechanism, a steel strand, an anti-swing mechanism and an anti-falling self-locking device, the upper fixing mechanism is installed at the top of a tower, the lower fixing mechanism is installed at the bottom of the tower, two ends of the steel strand are connected with the upper fixing mechanism and the lower fixing mechanism respectively, one end of the anti-swing mechanism is installed on the tower, and the other end of the anti-swing mechanism is connected with the steel strand; the anti-falling self-locking device comprises an anti-falling self-locking shell, the anti-falling self-locking shell is provided with a channel matched with the steel strand, a first self-locking arm, a second self-locking arm and a friction wheel are rotatably arranged on the inner side of the anti-falling self-locking shell, one end of the first self-locking arm is provided with a buckle, and a linkage assembly is arranged between the first self-locking arm and the second self-locking arm; the friction wheel is in movable contact with the steel strand, the friction wheel is provided with a locking assembly for locking the friction wheel, and the locking assembly is in linkage cooperation with the first self-locking arm or the second self-locking arm.

[0007] As an optional implementation form of the above technical scheme, the linkage assembly comprises a linkage arm, a first pin shaft and a second pin shaft, one end of the linkage arm is rotatably connected with the first self-locking arm through the first pin shaft, and the other end of the linkage arm is rotatably connected with the second self-locking arm through the second pin shaft.

[0008] As an optional implementation form of the above technical scheme, one end of the first self-locking arm and one end of the second self-locking arm close to the steel strand are each provided with a locking tooth.

[0009] As an optional implementation form of the above technical scheme, the locking assembly comprises a locking block, the locking block is installed on the first self-locking arm, and one side of the locking block close to the friction wheel is provided with a locking camber surface.

[0010] As an optional implementation form of the above technical scheme, the upper fixing mechanism comprises an upper support, an upper connecting plate, an upper sleeve and an upper fixing assembly, the upper support is installed on the angle steel of the tower through the upper fixing assembly, and two ends of the upper connecting plate are connected with the upper support and the upper sleeve respectively; one end of the steel strand is provided with an upper threaded end, and the upper threaded end is connected with an upper fastening nut after penetrating through the upper sleeve.

[0011] As an optional implementation form of the above technical scheme, the upper support comprises a first upper side plate and a second upper side plate, and the first upper side plate and the second upper side plate are connected to form an L-shaped structure.

[0012] As an optional implementation form of the above technical scheme, the upper fixing assembly comprises at least two upper fixing screws arranged in a staggered manner, the two upper fixing screws are arranged on the first upper side plate and the second upper side plate respectively, one end of the upper fixing screw is provided with an upper hook portion for hooking the edge of the angle steel, and the other end of the upper fixing screw is provided with an upper fixing nut.

[0013] As an optional implementation form of the above technical solution, the anti-swing mechanism comprises an anti-swing support, an upper anti-swing sheet, a lower anti-swing sheet, and an anti-swing fixing assembly. The anti-swing support is installed on the angle steel of the tower through the anti-swing fixing assembly. The upper anti-swing sheet and the lower anti-swing sheet are connected with the anti-swing support. The upper anti-swing sheet and the lower anti-swing sheet are both provided with a limiting gap matched with the steel strand.

[0014] As an optional implementation form of the above technical solution, the opening direction of the limiting gap of the upper anti-swing sheet is oppositely arranged with the opening direction of the limiting gap of the lower anti-swing sheet.

[0015] As an optional implementation form of the above technical solution, the anti-swing support comprises a first anti-swing side plate and a second anti-swing side plate. The first anti-swing side plate and the second anti-swing side plate are connected in an L-shaped structure.

[0016] As an optional implementation form of the above technical solution, the anti-swing fixing assembly comprises at least two anti-swing fixing screws arranged in a staggered manner. Two anti-swing fixing screws are arranged on the first anti-swing side plate and the second anti-swing side plate, respectively. One end of the anti-swing fixing screw is provided with an anti-swing hook portion for hooking the edge of the angle steel. The other end of the anti-swing fixing screw is provided with an anti-swing fixing nut.

[0017] As an optional implementation form of the above technical solution, the lower fixing mechanism comprises a lower support, a lower connecting plate, a lower sleeve, and a lower fixing assembly. The lower support is installed below the angle steel of the tower through the lower fixing assembly. The two ends of the lower connecting plate are connected with the lower support and the lower sleeve, respectively. One end of the steel strand is provided with a lower threaded end. The lower threaded end is connected with a lower fastening nut after penetrating through the lower sleeve.

[0018] As an optional implementation form of the above technical solution, the lower support comprises a first lower side plate and a second lower side plate. The first lower side plate and the second lower side plate are connected in an L-shaped structure.

[0019] As an optional implementation form of the above technical solution, the lower fixing assembly comprises at least two lower fixing screws arranged in a staggered manner. Two lower fixing screws are arranged on the first lower side plate and the second lower side plate, respectively. One end of the lower fixing screw is provided with a lower hook portion for hooking the edge of the angle steel. The other end of the lower fixing screw is provided with a lower fixing nut.

[0020] As an optional implementation form of the above technical solution, the anti-falling self-locking shell is provided with a height detection mechanism. The height detection mechanism is used for detecting the ground clearance of the anti-falling self-locking shell. The height detection mechanism is connected with a controller. The controller is connected with an alarm. When the height detection mechanism detects that the ground clearance of the anti-falling self-locking shell reaches a preset height, the controller controls the alarm to issue a first early warning.

[0021] As an optional implementation form of the above technical solution, the anti-falling self-locking shell is provided with a laser ranging mechanism, the laser ranging mechanism is connected with the controller, the laser ranging mechanism is used for detecting the actual distance between the anti-falling self-locking shell and the tower, and the controller compares the actual distance with a preset distance to determine whether the steel strand abnormally displaces, and if the steel strand abnormally displaces, the controller controls the alarm to issue a second early warning.

[0022] The present application has the following advantages: The high-altitude anti-falling device provided by the present application is used for preventing workers from falling from high altitudes. When the workers fall from high altitudes, the clamping ring is pulled by the workers, the first self-locking arm drives the second self-locking arm to move through the linkage assembly, and the first self-locking arm drives the locking assembly to move and lock the friction wheel. The friction wheel and the steel strand maintain a certain friction force, slow down the falling speed of the workers, and the first self-locking arm and the second self-locking arm clamp the steel strand, thereby achieving the function of preventing the workers from falling. The high-altitude anti-falling device of the present application uses the steel strand as a fixed guide rail, which has the characteristics of corrosion resistance, no need for later maintenance, high practicability, low cost, etc. Moreover, the anti-falling self-locking device is designed with the first self-locking arm, the second self-locking arm and the friction wheel, which can quickly self-lock when the workers fall from high altitudes to prevent the workers from falling. The device has the advantages of simple structure, convenient use and high practicability, and can effectively protect the workers when they go up and down the tower. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic diagram of the high-altitude anti-falling device in an embodiment of the present application; Figure 2 is a structural schematic diagram of the anti-falling self-locking device in an embodiment of the present application; Figure 3 is a structural schematic diagram of the upper fixing mechanism in an embodiment of the present application; Figure 4 is a structural schematic diagram of the anti-swing mechanism in an embodiment of the present application; Figure 5 is a structural schematic diagram of the lower fixing mechanism in an embodiment of the present application.

[0024] In the diagram: 1-Upper fixing mechanism; 2-Lower fixing mechanism; 3-Steel strand; 4-Anti-sway mechanism; 5-Anti-fall self-locking device; 6-Anti-fall self-locking outer shell; 7-First self-locking arm; 8-Second self-locking arm; 9-Friction wheel; 10-Snap ring; 11-Linking arm; 12-Locking tooth; 13-Locking block; 14-Upper support; 15-Upper connecting plate; 16-Upper sleeve; 17-Angle steel; 18-Upper fastening nut; 19-Upper fixing screw; 20-Upper hook part; 21-Upper fixing nut; 22-Anti-sway support; 23-Upper anti-sway plate; 24-Limiting notch; 25-Anti-sway fixing screw; 26-Anti-sway hook part; 27-Anti-sway fixing nut; 28-Lower support; 29-Lower connecting plate; 30-Lower sleeve; 31-Lower fastening nut; 32-Lower fixing screw; 33-Lower hook part; 34-Lower fixing nut. Detailed Implementation

[0025] like Figures 1-5 As shown, this embodiment provides a high-altitude fall protection device, including an upper fixing mechanism 1, a lower fixing mechanism 2, a steel strand 3, an anti-sway mechanism 4, and a fall arrestor 5. The upper fixing mechanism 1 is installed at the top of the tower, and the lower fixing mechanism 2 is installed at the bottom of the tower. Both ends of the steel strand 3 are connected to the upper fixing mechanism 1 and the lower fixing mechanism 2, respectively, and the steel strand 3 is arranged along the height direction of the tower. One end of the anti-sway mechanism 4 is installed on the tower, and the other end is connected to the steel strand 3. The number of anti-sway mechanisms 4 can be set according to specific needs to prevent the steel strand 3 from swaying. The fall arrestor 5 is installed on the steel strand 3 and is connected to the worker via a high-altitude cable. In the event of a fall from height, the fall arrestor 5 can self-lock, preventing the worker from falling from the tower and ensuring the worker's safety.

[0026] The fall arrestor 5 includes a fall arrestor housing 6, which has a channel adapted to the steel strand 3. A first self-locking arm 7, a second self-locking arm 8, and a friction wheel 9 are rotatably mounted inside the fall arrestor housing 6. One end of the first self-locking arm 7 has a buckle 10, and a linkage assembly is provided between the first self-locking arm 7 and the second self-locking arm 8. The buckle 10 is connected to the worker via a high-altitude cable. The linkage assembly can drive the first self-locking arm 7 and the second self-locking arm 8 to move synchronously, enabling the first self-locking arm 7 and the second self-locking arm 8 to clamp the steel strand 3, thus realizing the self-locking function of the fall arrestor 5.

[0027] The friction wheel 9 is in active contact with the steel strand 3, and the friction wheel 9 is provided with a locking assembly for locking the friction wheel 9, and the locking assembly is in linkage cooperation with the first self-locking arm 7 or the second self-locking arm 8. The friction wheel 9 is in active contact with the steel strand 3, so that the anti-falling self-locking device 5 can move stably along the steel strand 3. When the worker falls from a high altitude, the clasp 10 is pulled by the worker, the first self-locking arm 7 drives the second self-locking arm 8 to move through the linkage assembly, and at the same time, the first self-locking arm 7 drives the locking assembly to move and lock the friction wheel 9, and the friction wheel 9 keeps a certain friction with the steel strand 3, so as to slow down the falling speed of the worker, and at the same time, the first self-locking arm 7 and the second self-locking arm 8 clamp the steel strand 3, thereby achieving the function of preventing the worker from falling.

[0028] The high-altitude anti-falling device has the characteristics of corrosion resistance, no later maintenance, strong practicability, low cost and the like, and the anti-falling self-locking device 5 is designed by the first self-locking arm 7, the second self-locking arm 8 and the friction wheel 9, so that when the worker falls from a high altitude, the anti-falling self-locking device 5 can quickly self-lock to prevent the worker from falling, and the anti-falling self-locking device 5 has the advantages of simple structure, convenient use and strong practicability, and can provide strong protection for the worker to go up and down the tower.

[0029] In the embodiment, the linkage assembly includes a linkage arm 11, a first pin shaft and a second pin shaft, one end of the linkage arm 11 is rotatably connected to the first self-locking arm 7 through the first pin shaft, and the other end of the linkage arm 11 is rotatably connected to the second self-locking arm 8 through the second pin shaft. Preferably, the first self-locking arm 7 and the second self-locking arm 8 are each provided with a locking tooth 12 at an end close to the steel strand 3. After the first self-locking arm 7 is pulled, the first self-locking arm 7 moves with the second self-locking arm 8 through the linkage arm 11, and at the same time, the first self-locking arm 7 moves with the locking assembly to lock the friction wheel 9, the friction between the friction wheel 9 and the steel strand 3 is used to slow down the falling speed of the worker, and the locking teeth 12 at the ends of the first self-locking arm 7 and the second self-locking arm 8 are used to contact the steel strand 3 to achieve the function of quickly and stably locking, thereby preventing the worker from falling from a high altitude.

[0030] The locking assembly includes a locking block 13, the locking block 13 is installed on the first self-locking arm 7, and a locking arc surface is arranged on one side of the locking block 13 close to the friction wheel 9. When the first self-locking arm 7 rotates, the locking block 13 rotates with the first self-locking arm 7, so that the locking arc surface contacts the surface of the friction wheel 9 to achieve the locking function of the friction wheel 9, and after the friction wheel 9 is locked, a certain friction is kept between the friction wheel 9 and the steel strand 3 to slow down the falling speed of the worker.

[0031] In an embodiment, the upper fixing mechanism 1 comprises an upper support 14, an upper connecting plate 15, an upper sleeve 16 and an upper fixing assembly, the upper support 14 is installed on the angle steel 17 of the tower through the upper fixing assembly, and the two ends of the upper connecting plate 15 are connected with the upper support 14 and the upper sleeve 16 respectively; one end of the steel strand 3 is provided with an upper threaded end, and the upper threaded end is connected with an upper fastening nut 18 after penetrating through the upper sleeve 16. The upper support 14 comprises a first upper side plate and a second upper side plate, and the first upper side plate and the second upper side plate are connected in an L-shaped structure. The upper fixing assembly comprises at least two upper fixing screws 19 arranged alternately, and the two upper fixing screws 19 are arranged on the first upper side plate and the second upper side plate respectively, one end of the upper fixing screw 19 is provided with an upper hook portion 20 for hooking the edge of the angle steel 17, and the other end of the upper fixing screw 19 is provided with an upper fixing nut 21. The angle steel 17 of the tower is in an L-shaped structure, the upper support 14 is located on the outer side of the angle steel 17, the upper fixing screw 19 is located between the angle steel 17 and the upper support 14, the upper hook portion 20 at one end of the upper fixing screw 19 hooks the edge of the angle steel 17, and the other end of the upper fixing screw 19 is fixed to the upper support 14 through the upper fixing nut 21. This design does not need to punch the angle steel 17, does not damage the structure of the angle steel 17, realizes the fixing function of the upper support 14, and has the advantages of simple structure and convenient and fast installation.

[0032] In an embodiment, the anti-swing mechanism 4 comprises an anti-swing support 22, an upper anti-swing piece 23, a lower anti-swing piece and an anti-swing fixing assembly, the anti-swing support 22 is installed on the angle steel 17 of the tower through the anti-swing fixing assembly, the upper anti-swing piece 23 and the lower anti-swing piece are connected with the anti-swing support 22, and the upper anti-swing piece 23 and the lower anti-swing piece are both provided with a limiting notch 24 matched with the steel strand 3. Preferably, the opening direction of the limiting notch 24 of the upper anti-swing piece 23 is arranged opposite to the opening direction of the limiting notch 24 of the lower anti-swing piece. The limiting notch 24 can be penetrated by the anti-falling self-locking device 5, and the steel strand 3 is limited to prevent deviation.

[0033] The anti-swing support 22 comprises a first anti-swing side plate and a second anti-swing side plate, and the first anti-swing side plate and the second anti-swing side plate are connected in an L-shaped structure. The anti-swing fixing assembly comprises at least two anti-swing fixing screws 25 arranged in a staggered manner, and the two anti-swing fixing screws 25 are arranged on the first anti-swing side plate and the second anti-swing side plate respectively. One end of the anti-swing fixing screw 25 is provided with an anti-swing hook portion 26 for hooking the edge of the angle steel 17, and the other end of the anti-swing fixing screw 25 is provided with an anti-swing fixing nut 27. The anti-swing support 22 is located outside the angle steel 17, the anti-swing fixing screw 25 is located between the angle steel 17 and the anti-swing support 22, the anti-swing hook portion 26 at one end of the anti-swing fixing screw 25 hooks the edge of the angle steel 17, and the other end of the anti-swing fixing screw 25 is fixed to the anti-swing support 22 through the anti-swing fixing nut 27. This design does not need to punch the angle steel 17, does not damage the structure of the angle steel 17, realizes the fixing function of the anti-swing support 22, has a simple structure, is convenient and fast to install, effectively reduces the swing range of the steel strand 3, and strengthens the wind deviation prevention effect.

[0034] The lower fixing mechanism 2 can adopt the same structure as the upper fixing mechanism 1. Specifically, the lower fixing mechanism 2 comprises a lower support 28, a lower connecting plate 29, a lower sleeve 30 and a lower fixing assembly, the lower support 28 is installed below the angle steel 17 of the tower through the lower fixing assembly, and the two ends of the lower connecting plate 29 are connected with the lower support 28 and the lower sleeve 30 respectively. One end of the steel strand 3 is provided with a lower threaded end, and the lower threaded end is connected with a lower fastening nut 31 after penetrating through the lower sleeve 30. The lower support 28 comprises a first lower side plate and a second lower side plate, and the first lower side plate and the second lower side plate are connected in an L-shaped structure. The lower fixing assembly comprises at least two lower fixing screws 32 arranged in a staggered manner, and the two lower fixing screws 32 are arranged on the first lower side plate and the second lower side plate respectively. One end of the lower fixing screw 32 is provided with a lower hook portion 33 for hooking the edge of the angle steel 17, and the other end of the lower fixing screw 32 is provided with a lower fixing nut 34. The lower support 28 is located outside the angle steel 17, the lower fixing screw 32 is located between the angle steel 17 and the lower support 28, the lower hook portion 33 at one end of the lower fixing screw 32 hooks the edge of the angle steel 17, and the other end of the lower fixing screw 32 is fixed to the lower support 28 through the lower fixing nut 34. This design does not need to punch the angle steel 17, does not damage the structure of the angle steel 17, realizes the fixing function of the lower support 28, has a simple structure, and is convenient and fast to install.

[0035] In a specific embodiment, the anti-falling self-locking shell 6 is provided with a height detection mechanism for detecting the height of the anti-falling self-locking shell 6 from the ground, the height detection mechanism is connected with a controller, the controller is connected with an alarm, when the height detection mechanism detects that the height of the anti-falling self-locking shell 6 from the ground reaches a preset height, the controller controls the alarm to issue a first early warning. Wherein, the alarm can issue different early warning sounds when the anti-falling self-locking shell 6 reaches different heights, prompting the staff to pay attention to safety.

[0036] Preferably, the anti-falling self-locking shell 6 is provided with a laser ranging mechanism, the laser ranging mechanism is connected with the controller, the laser ranging mechanism is used for detecting the actual distance between the anti-falling self-locking shell 6 and the tower, the controller compares the actual distance with a preset distance to determine whether the steel strand 3 has abnormal displacement, if the steel strand 3 has abnormal displacement, the controller controls the alarm to issue a second early warning, prompting the staff to pay attention to safety. The design of the height detection mechanism, the laser ranging mechanism, the controller and the alarm in the present application can issue early warning information when the staff reaches different heights, and can issue early warning information when the steel strand 3 has abnormal displacement, prompting the staff, effectively reducing the incidence of high-altitude falling accidents and improving the efficiency of on-site safety management.

[0037] In the description of the present application, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, which can be fixed connection, detachable connection or integral; can be mechanical connection or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, and those skilled in the art can understand the specific meaning of the above terms in the present application. In addition, the specific features, structures and the like described in the embodiments are included in at least one embodiment, and those skilled in the art can combine the features of different embodiments without mutual contradiction. The protection scope of the present application is not limited to the above specific embodiments, according to the basic technical concept of the present application, those skilled in the art can think of embodiments without creative labor, which are all within the protection scope of the present application.

Claims

1. A high-altitude anti-falling device, comprising an upper fixing mechanism (1), a lower fixing mechanism (2), a steel strand (3), an anti-swing mechanism (4) and an anti-falling self-locking device (5), the upper fixing mechanism (1) is installed at the top of the tower, the lower fixing mechanism (2) is installed at the bottom of the tower, the two ends of the steel strand (3) are connected with the upper fixing mechanism (1) and the lower fixing mechanism (2) respectively, one end of the anti-swing mechanism (4) is installed on the tower, and the other end of the anti-swing mechanism (4) is connected with the steel strand (3); characterized in that, The anti-falling self-locking device (5) comprises an anti-falling self-locking shell (6) provided with a channel matched with the steel strand (3), a first self-locking arm (7), a second self-locking arm (8) and a friction wheel (9) rotatably arranged inside the anti-falling self-locking shell (6), one end of the first self-locking arm (7) is provided with a buckle ring (10), and a linkage assembly is arranged between the first self-locking arm (7) and the second self-locking arm (8); the friction wheel (9) is in movable contact with the steel strand (3), the friction wheel (9) is provided with a locking assembly for locking the friction wheel (9), and the locking assembly is in linkage cooperation with the first self-locking arm (7) or the second self-locking arm (8).

2. The high-altitude anti-falling device according to claim 1, characterized in that, The linkage assembly comprises a linkage arm (11), a first pin shaft and a second pin shaft, one end of the linkage arm (11) is rotatably connected with the first self-locking arm (7) through the first pin shaft, and the other end of the linkage arm (11) is rotatably connected with the second self-locking arm (8) through the second pin shaft.

3. The high-altitude anti-falling device according to claim 2, characterized in that, The first self-locking arm (7) and the second self-locking arm (8) are both provided with a locking tooth (12) at one end close to the steel strand (3).

4. The high altitude anti-falling device according to claim 2, characterized in that, The locking assembly comprises a locking block (13), the locking block (13) is installed on the first self-locking arm (7), and one side of the locking block (13) close to the friction wheel (9) is provided with a locking arc surface.

5. The high altitude fall arrest device of claim 1, wherein, The upper fixing mechanism (1) comprises an upper support (14), an upper connecting plate (15), an upper sleeve (16) and an upper fixing assembly, the upper support (14) is installed on the angle steel (17) of the tower through the upper fixing assembly, and the two ends of the upper connecting plate (15) are connected with the upper support (14) and the upper sleeve (16) respectively; one end of the steel strand (3) is provided with an upper threaded end, and the upper threaded end is connected with an upper fastening nut (18) after penetrating through the upper sleeve (16).

6. The high-altitude anti-falling device according to claim 5, characterized in that, The upper support (14) comprises a first upper side plate and a second upper side plate, and the first upper side plate and the second upper side plate are connected in an L-shaped structure; the upper fixing assembly comprises at least two upper fixing screws (19) arranged in a staggered mode, and the two upper fixing screws (19) are arranged on the first upper side plate and the second upper side plate respectively, one end of the upper fixing screw (19) is provided with an upper hook portion (20) for hooking the edge of the angle steel (17), and the other end of the upper fixing screw (19) is provided with an upper fixing nut (21).

7. The high altitude fall arrest device of claim 1, wherein, The anti-swing mechanism (4) comprises an anti-swing support (22), an upper anti-swing piece (23), a lower anti-swing piece and an anti-swing fixing assembly, the anti-swing support (22) is installed on the angle steel (17) of the tower through the anti-swing fixing assembly, the upper anti-swing piece (23) and the lower anti-swing piece are connected with the anti-swing support (22), and the upper anti-swing piece (23) and the lower anti-swing piece are both provided with a limiting gap (24) matched with the steel strand (3); the opening direction of the limiting gap (24) of the upper anti-swing piece (23) is arranged opposite to the opening direction of the limiting gap (24) of the lower anti-swing piece. The anti-swing support (22) comprises a first anti-swing side plate and a second anti-swing side plate, which are connected in an L-shaped structure; the anti-swing fixing assembly comprises at least two anti-swing fixing screws (25) arranged alternately, two anti-swing fixing screws (25) are arranged on the first anti-swing side plate and the second anti-swing side plate respectively, one end of the anti-swing fixing screw (25) is provided with an anti-swing hook portion (26) for hooking the edge of the angle steel (17), and the other end of the anti-swing fixing screw (25) is provided with an anti-swing fixing nut (27).

8. The high altitude fall arrest device of claim 1, wherein, The lower fixing mechanism (2) comprises a lower support (28), a lower connecting plate (29), a lower sleeve (30) and a lower fixing assembly, the lower support (28) is installed below the angle steel (17) of the tower through the lower fixing assembly, and two ends of the lower connecting plate (29) are connected with the lower support (28) and the lower sleeve (30) respectively; one end of the steel strand (3) is provided with a lower threaded end, the lower threaded end is connected with a lower fastening nut (31) after penetrating through the lower sleeve (30); the lower support (28) comprises a first lower side plate and a second lower side plate, which are connected in an L-shaped structure; the lower fixing assembly comprises at least two lower fixing screws (32) arranged alternately, two lower fixing screws (32) are arranged on the first lower side plate and the second lower side plate respectively, one end of the lower fixing screw (32) is provided with a lower hook portion (33) for hooking the edge of the angle steel (17), and the other end of the lower fixing screw (32) is provided with a lower fixing nut (34).

9. The high altitude fall arrest device of claim 1, wherein, The height detection mechanism is used for detecting the ground clearance of the anti-falling self-locking shell (6), the height detection mechanism is connected with a controller, the controller is connected with an alarm, and when the height detection mechanism detects that the ground clearance of the anti-falling self-locking shell (6) reaches a preset height, the controller controls the alarm to issue a first early warning.

10. The high-altitude anti-falling device according to claim 9, characterized in that, The anti-falling self-locking shell (6) is provided with a laser ranging mechanism, the laser ranging mechanism is connected with a controller, the laser ranging mechanism is used for detecting the actual distance between the anti-falling self-locking shell (6) and the tower, and the controller compares the actual distance with a preset distance to judge whether the steel strand (3) abnormally displaces, and if the abnormal displacement occurs, the controller controls the alarm to issue a second early warning.

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