A fall arrester and control method for lifting equipment

Abstract

The present invention relates to a fall arrester and control method for lifting equipment, wherein a building climbing frame is installed on a connecting hole of a guide rail, one end of a lifting guide seat is fixed on a building wall, and the other end of the lifting guide seat is hoisted on the guide rail, the building climbing frame can move up and down with a hook of a hoisting hoist, the guide rail moves up and down with the building climbing frame, and the fall arrester is installed on the lifting guide seat; when the building climbing frame moves at a uniform speed with the guide rail at a set speed, a plurality of star wheel outer feet on the star wheel of the fall arrester can be inserted into a plurality of rectangular holes on the guide rail in sequence, so that the star wheel rotates, and the building climbing frame can achieve normal lifting work; when the building climbing frame moves downward with the guide rail at an accelerated speed, the star wheel is self-locking and cannot rotate, and the star wheel outer feet are in the rectangular holes on the guide rail, so that the guide rail stops moving, and the building climbing frame connected to the guide rail stops moving, and self-locking fall prevention can be completed. The present invention can enhance the fall prevention reliability of the fall arrester, has a simple structure, can prevent pollution, and improves the service life.

Description

Technical Field

[0001] The invention relates to an anti-falling device, and in particular to an anti-falling device for lifting equipment and a control method thereof. Background Art

[0002] Existing fall arresters for lifting equipment, such as "building climbing frame fall arresters", are large in size and heavy in weight; the climbing frame self-descending fall arrester cannot work properly, and the internal fall arrest structure cannot be sealed; affected by rainy and snowy weather and harsh working conditions, it is often stuck by mortar or rusted and loses its proper function, resulting in failure to prevent falling, which is very dangerous! The lack of sealing causes the moving parts of the fall arrester to rust too quickly, resulting in a short service life, and the parts are numerous and complex, with high cost, increasing costs and affecting normal operations. Summary of the invention

[0003] The purpose of the present invention is to provide a fall arrester and a control method for lifting equipment. The present invention uses steel balls, which have a mature manufacturing process and the best sliding surface, thereby enhancing the reliability of the fall arrester mechanism. When the steel balls are used for fall arrest, the structure of the fall arrester can be optimized under large-tonnage fall arrest, so that the structure of the fall arrester is simple. The optimized structure can be installed with oil seals, dust seals, and O-rings to completely seal the fall arrester moving parts. The completely sealed fall arrester will not be harmed by weather such as rain, ice and snow. It can be used normally under harsh working conditions on the construction site without being disturbed by mortar and masonry. The full sealing of the fall arrester moving parts can double the service life of the fall arrester under the same material conditions. The U-shaped ring frame has a simple manufacturing process, uses less raw materials, is cheap and durable, can form secondary self-locking fall prevention, and can also realize static support function.

[0004] In order to achieve the above object, the present invention has the following technical solutions:

[0005] The invention discloses a fall arrester for lifting equipment, comprising a building climbing frame, a guide rail, and a lifting guide seat. The building climbing frame is installed on the connecting hole of the guide rail, and a plurality of rectangular holes are also provided on the guide rail. One end of the lifting guide seat is fixed on the building wall, and the other end of the lifting guide seat is clamped on the guide rail. The building climbing frame can move up and down with the hook of the hoist, and the guide rail moves up and down with the building climbing frame. The fall arrester is installed on the lifting guide seat. The fall arrester comprises a star wheel 1, two star wheel fixing plates 8, a steel ball 10, and a steel Bead 2 11, central axis 12, two star wheel support frames 2, base 3, U-shaped ring frame, the two star wheel support frames 2 are fixed to one end of the base 3, the U-shaped ring frame is fixed to the other end of the base 3, the star wheel 1 includes a star wheel disc, a star wheel outer foot outside the star wheel disc, and a star wheel middle hole 24, a plurality of star wheel inner teeth 21 and a plurality of star wheel recesses 22 are arranged in the star wheel middle hole 24, the star wheel 1 is connected to the central axis 12 through the star wheel middle hole 24, the middle of the central axis is provided with a hole 14, and the two ends of the central axis A second hole 15 and a third hole 16 are respectively provided, and the central shaft is connected to the two star wheel support frames 2 through the pins in the second hole 15 and the third hole 16, and the two star wheel fixing plates 8 are fixed on both sides of the star wheel 1. A guide column 13 is provided in the hole 14 in the middle of the central shaft, and a steel ball 10 and a steel ball 2 11 are respectively provided at both ends of the guide column 13, and the length of the guide column 13 is smaller than the diameter of the central shaft 12, and a notch 23 is provided at the upper end of the hole 14 of the central shaft, and the notch 23 can be adapted to the steel ball 10, and the notch 23 It can be used as a card position and can cooperate with steel ball 10 to prevent the star wheel from rotating; when the building climbing frame moves at a uniform speed at the set speed along with the guide rail, several star wheel outer feet on the star wheel can be inserted into several rectangular holes on the guide rail in sequence to make the star wheel rotate, and the building climbing frame can achieve normal lifting and lowering work; when the building climbing frame moves downward with the guide rail at an accelerated speed, the star wheel self-locks and cannot rotate, and the star wheel outer feet are in the rectangular holes on the guide rail, so that the guide rail stops moving, and the building climbing frame connected to the guide rail stops moving, which can complete self-locking and anti-falling.

[0006] Among them, the cross-section of the guide rail is a T-shaped structure, the connecting hole of the guide rail is arranged at the lower part of the T-shaped structure, and several rectangular holes on the guide rail are arranged at the upper part of the T-shaped structure. The building climbing frame is fixed on the guide rail through the connecting hole of the guide rail, and the outer foot of the star wheel is connected to the several rectangular holes by plugging.

[0007] The lifting guide seat is a load-bearing fixed frame, an end of the lifting guide seat is provided with an open hoop frame, the guide rail can be inserted into the hoop frame, and the guide rail can move up and down in the hoop frame; the star wheel base is installed on the lifting guide seat.

[0008] Among them, the U-shaped ring frame includes two support rods 6, a cross bar, and a U-shaped ring frame support seat 5. The bottom of the two support rods 6 is hinged to the U-shaped ring frame support seat 5, and a cross bar 9 is fixed to the top of the two support rods 6. A handle 7 is provided at the end of the cross bar 9. A U-shaped ring frame lock is installed between the support rod and the U-shaped ring frame support seat 5. The U-shaped ring frame lock is a magnet block, which can fix the support rod and also separate the support rod; when the U-shaped ring frame is pressed manually, the cross bar can be stuck between two adjacent star wheel outer feet 4, which can form a secondary self-locking anti-falling function and can also realize the static support function.

[0009] Among them, the two star wheel fixing plates 8 are equipped with protective covers 20, the two star wheel fixing plates 8 are provided with O-rings 17 at the contact points between the two star wheel fixing plates 8 and the star wheels, oil seals 18 are also provided at the contact points between the two star wheel fixing plates 8 and the star wheel 1, and dust seals 19 are provided at the contact points between the two star wheel fixing plates 8 and the central axis; the notch 23 at the end of the hole 14 is a curved surface shape, and the curvature radius of the curved surface of the notch 23 at the end of the hole 14 is the same as or similar to the curvature radius of the steel ball 10 and the steel ball 2 11.

[0010] A control method for a fall arrester for a lifting device of the present invention comprises the following steps:

[0011] 1) When the building climbing frame and the guide rail move at a constant speed at a set speed, the several outer feet of the star wheel 1 can be inserted into the several rectangular holes on the guide rail in sequence, so that the star wheel rolls and rotates on the guide rail; when the star wheel 1 rotates forward and reverse at a set constant speed, the central axis 12 does not rotate, and the guide column 13 in the hole 14 of the central axis 12 presses the steel ball 11 into the concave position 22 of the star wheel through the action of gravity, and the steel ball 10 on the top of the guide column 13 shrinks into the hole 14, and the star wheel rotates. When the star wheel rotates, the inner teeth 21 of the star wheel can squeeze the steel ball 10 into the hole 14, and the inner teeth 21 of the star wheel can smoothly pass over the top of the steel ball 10; the steel ball 2 11 located at the lower end of the hole, when the star wheel rotates, because there is no gap at the lower end of the hole, the inner teeth 21 of the star wheel can squeeze the steel ball 2 11 into the hole 14, and the inner teeth 21 of the star wheel can smoothly pass under the steel ball 2 11, and the steel ball 10 moves linearly with the guide column, the star wheel can operate normally, and the building climbing frame can achieve normal lifting work;

[0012] 2) When the building climbing frame and the guide rail move downward with acceleration, the star wheel 1 accelerates counterclockwise along with the guide rail. Since the guide column 13 cannot quickly press the steel ball 11 into the star wheel concave position 22, the steel ball 10 cannot quickly shrink into the hole 14. The steel ball 10 is sent into the upper end notch 23 of the hole 14 by the inner teeth 21 of the star wheel, and the star wheel 1 is stuck. The star wheel 1 cannot rotate, and the outer foot of the star wheel is in the rectangular hole on the guide rail, so that the guide rail stops moving, and the building climbing frame connected to the guide rail stops moving, which can complete the self-locking and fall prevention.

[0013] The advantages of the present invention are:

[0014] The present invention uses steel balls with mature manufacturing process and the best sliding surface, thereby enhancing the reliability of the anti-fall mechanism; when the steel balls are used for anti-fall, the structure of the anti-fall device can be optimized under large-tonnage anti-fall conditions, so that the structure of the anti-fall device is simple; the optimized structure can be installed with oil seals, dust seals, and O-rings to completely seal the anti-fall moving parts, and the completely sealed anti-fall device will not be harmed by weather such as rain, ice and snow; it will not be disturbed by mortar, masonry, and can be used normally under harsh working conditions on the construction site; the full sealing of the anti-fall device moving parts can double the service life of the anti-fall device under the condition of the same material; the U-shaped ring frame has a simple manufacturing process, uses less raw materials, is cheap and durable, can form secondary self-locking anti-fall, and can also realize the static support function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is an enlarged schematic diagram of the front view of the fall arrester structure of the present invention;

[0017] Figure 3 for Figure 2 Left view of;

[0018] Figure 4 for Figure 2 AA cross-sectional view;

[0019] Figure 5 for Figure 3 A cross-sectional view along the BB direction;

[0020] Figure 6 It is a structural schematic diagram of the star wheel of the present invention;

[0021] Figure 7 for Figure 1 An enlarged schematic diagram of the cross-sectional view taken along the CC direction;

[0022] Figure 8 for Figure 1 An enlarged schematic diagram of the cross-sectional view along the DD direction;

[0023] Fig. 9 for Figure 1 An enlarged schematic diagram of the cross-sectional view taken along the EE direction;

[0024] Fig.10 for Figure 1 An enlarged schematic diagram of a cross-sectional view taken along the FF direction;

[0025] Fig.11 It is an enlarged schematic diagram of a notch at an upper end portion of the central axis hole of the present invention.

[0026] Among them: 1 is a star wheel; 2 is a star wheel support frame; 3 is a base; 4 is a star wheel outer foot; 5 is a U-shaped ring frame support seat; 6 is a support rod; 7 is a handle; 8 is a star wheel fixing plate; 9 is a cross bar; 10 is a steel ball one; 11 is a steel ball two; 12 is a central axis; 13 is a guide column; 14 is a hole one; 15 is a hole two; 16 is a hole three; 17 is an O-ring; 18 is an oil seal; 19 is a dust seal; 20 is a protective cover; 21 is a star wheel inner tooth; 22 is a star wheel concave position; 23 is a notch; 24 is a star wheel middle hole; 25 is a U-shaped ring frame lock; 26 is a guide rail; 27 is a building climbing frame; 28 is a fixing bolt; 29 is a fall arrester; 30 is a lifting guide seat; 31 is a building wall; 32 is a connecting hole for the guide rail; 33 is a rectangular hole; 34 is a hoop frame; 35 is a guide rail reinforcement rib; DETAILED DESCRIPTION

[0027] The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0028] like Figure 1-11 As shown,

[0029] The invention discloses a fall arrester for lifting equipment, comprising a building climbing frame, a guide rail, and a lifting guide seat. The building climbing frame is installed on the connecting hole of the guide rail, and a plurality of rectangular holes are also provided on the guide rail. One end of the lifting guide seat is fixed on the building wall, and the other end of the lifting guide seat is clamped on the guide rail. The building climbing frame can move up and down with the hook of the hoist, and the guide rail moves up and down with the building climbing frame. The fall arrester is installed on the lifting guide seat. The fall arrester comprises a star wheel 1, two star wheel fixing plates 8, a steel ball 10, and a steel Bead 2 11, central axis 12, two star wheel support frames 2, base 3, U-shaped ring frame, the two star wheel support frames 2 are fixed to one end of the base 3, the U-shaped ring frame is fixed to the other end of the base 3, the star wheel 1 includes a star wheel disc, a star wheel outer foot outside the star wheel disc, and a star wheel middle hole 24, a plurality of star wheel inner teeth 21 and a plurality of star wheel recesses 22 are arranged in the star wheel middle hole 24, the star wheel 1 is connected to the central axis 12 through the star wheel middle hole 24, the middle of the central axis is provided with a hole 14, and the two ends of the central axis A second hole 15 and a third hole 16 are respectively provided, and the central shaft is connected to the two star wheel support frames 2 through the pins in the second hole 15 and the third hole 16, and the two star wheel fixing plates 8 are fixed on both sides of the star wheel 1. A guide column 13 is provided in the hole 14 in the middle of the central shaft, and a steel ball 10 and a steel ball 2 11 are respectively provided at both ends of the guide column 13, and the length of the guide column 13 is smaller than the diameter of the central shaft 12, and a notch 23 is provided at the upper end of the hole 14 of the central shaft, and the notch 23 can be adapted to the steel ball 10, and the notch 23 It can be used as a card position and can cooperate with steel ball 10 to prevent the star wheel from rotating; when the building climbing frame moves at a uniform speed along with the guide rail at a set speed, several star wheel outer feet on the star wheel can be inserted into several rectangular holes on the guide rail in sequence to make the star wheel rotate, and the building climbing frame can achieve normal lifting and lowering work; when the building climbing frame and the guide rail accelerate downward, the star wheel self-locks and cannot rotate, and the star wheel outer feet are in the rectangular holes on the guide rail, so that the guide rail stops moving, and the building climbing frame connected to the guide rail stops moving, which can complete self-locking and anti-falling.

[0030] The guide rail has a T-shaped cross-section, the connecting hole of the guide rail is arranged at the lower part of the T-shaped structure, and several rectangular holes on the guide rail are arranged at the upper part of the T-shaped structure. The building climbing frame is fixed on the guide rail through the connecting hole of the guide rail, and the outer feet of the star wheel are connected to the several rectangular holes by plugging.

[0031] The lifting guide seat is a load-bearing fixed frame, an end of the lifting guide seat is provided with an open hoop frame, the guide rail can be inserted into the hoop frame, and the guide rail can move up and down in the hoop frame; the star wheel base is installed on the lifting guide seat.

[0032] Among them, the U-shaped ring frame includes two support rods 6, a cross bar, and a U-shaped ring frame support seat 5. The bottom of the two support rods 6 is hinged to the U-shaped ring frame support seat 5, and a cross bar 9 is fixed to the top of the two support rods 6. A handle 7 is provided at the end of the cross bar 9. A U-shaped ring frame lock is installed between the support rod and the U-shaped ring frame support seat 5. The U-shaped ring frame lock is a magnet block, which can fix the support rod and also separate the support rod; when the U-shaped ring frame is pressed manually, the cross bar can be stuck between two adjacent star wheel outer feet 4, which can form a secondary self-locking anti-falling function and can also realize the static support function.

[0033] Among them, the two star wheel fixing plates 8 are equipped with protective covers 20, the two star wheel fixing plates 8 are provided with O-rings 17 at the contact points between the two star wheel fixing plates 8 and the star wheels, oil seals 18 are also provided at the contact points between the two star wheel fixing plates 8 and the star wheel 1, and dust seals 19 are provided at the contact points between the two star wheel fixing plates 8 and the central axis; the notch 23 at the end of the hole 14 is a curved surface shape, and the curvature radius of the curved surface of the notch 23 at the end of the hole 14 is the same as or similar to the curvature radius of the steel ball 10 and the steel ball 2 11.

[0034] A control method for a fall arrester for a lifting device of the present invention comprises the following steps:

[0035] 1) When the building climbing frame moves at a set speed along with the guide rail, several outer feet of the star wheel 1 can be inserted into several rectangular holes on the guide rail in sequence, so that the star wheel rolls and rotates on the guide rail; when the star wheel 1 rotates forward and reverse at a set uniform speed, the central axis 12 does not rotate, and the guide column 13 in the hole 14 of the central axis 12 presses the steel ball 11 into the concave position 22 of the star wheel through the action of gravity, and the steel ball 10 on the top of the guide column 13 shrinks into the hole 14, and the star wheel rotates. When the star wheel rotates, the inner teeth 21 of the star wheel can squeeze the steel ball 10 into the hole 14, and the inner teeth 21 of the star wheel can smoothly pass over the top of the steel ball 10; the steel ball 2 11 located at the lower end of the hole, when the star wheel rotates, because there is no gap at the lower end of the hole, the inner teeth 21 of the star wheel can squeeze the steel ball 2 11 into the hole 14, and the inner teeth 21 of the star wheel can smoothly pass under the steel ball 2 11, and the steel ball 10 moves linearly with the guide column, the star wheel can operate normally, and the building climbing frame can achieve normal lifting work;

[0036] 2) When the building climbing frame moves downward with the guide rail at an accelerated speed, the star wheel 1 accelerates counterclockwise with the guide rail. Because the guide column 13 cannot quickly press the steel ball 11 into the star wheel concave position 22, the steel ball 10 cannot quickly shrink into the hole 14. The steel ball 10 is sent into the upper end notch 23 of the hole 14 by the inner teeth 21 of the star wheel, and the star wheel 1 is stuck. The star wheel 1 cannot rotate, and the outer foot of the star wheel is in the rectangular hole on the guide rail, so that the guide rail stops moving, and the building climbing frame connected to the guide rail stops moving, which can complete the self-locking and anti-falling.

[0037] In the embodiment of the present invention, when the building climbing frame and the guide rail rise, the star wheel rotates clockwise, there is no notch at the lower end of the hole 14 of the central axis, and the clockwise speed range of the star wheel is set to 1-3 revolutions per second; when the building climbing frame and the guide rail descend, the star wheel rotates counterclockwise, a notch is provided on the left side of the upper end of the hole 14 of the central axis, and the clockwise speed range of the star wheel is set to 0.5-10 revolutions per minute. When a fixed value is taken within the above range and the lifting equipment is operated at a uniform speed clockwise and counterclockwise, the lifting equipment with which the fall arrester of the present invention follows can rise and descend normally.

[0038] The hoist can be a DHP electric hoist made by Shanghai Hugong, but is not limited to this product.

[0039] O-rings, such as Baker Seals, are products of the national standard GB3452.1 series, but not limited to these products;

[0040] Oil seals are made of Dingji’s UHS UN product, but not limited to this product;

[0041] Dust seals are made from Roth's J series products, but are not limited to these products;

[0042] The invention can significantly enhance the anti-falling reliability of the anti-falling device, has a simple structure, and can prevent pollution, thereby increasing the service life.

[0043] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A fall arrester for lifting equipment, comprising a building climbing frame, a guide rail, and a lifting guide seat, wherein the building climbing frame is mounted on a connecting hole of the guide rail, and a plurality of rectangular holes are also provided on the guide rail, one end of the lifting guide seat is fixed on a building wall, and the other end of the lifting guide seat is clamped on the guide rail, the building climbing frame can move up and down with a hook of a hoist, and the guide rail moves up and down with the building climbing frame, and the fall arrester is mounted on the lifting guide seat; it is characterized in that: The anti-fall device comprises a star wheel (1), two star wheel fixing plates (8), a first steel ball (10), a second steel ball (11), a central shaft (12), two star wheel support frames (2), a base (3), and a U-shaped ring frame, wherein the two star wheel support frames (2) are fixed to one end of the base (3), and the U-shaped ring frame is fixed to the other end of the base (3); the star wheel (1) comprises a star wheel disc, a star wheel outer foot outside the star wheel disc, a star wheel middle hole (24), and the star wheel middle hole A plurality of star wheel internal teeth (21) and a plurality of star wheel recesses (22) are arranged inside the star wheel (1), the star wheel (1) is connected to the central shaft (12) through a hole (24) in the middle of the star wheel, a hole 1 (14) is arranged in the middle of the central shaft, a hole 2 (15) and a hole 3 (16) are arranged at the two ends of the central shaft respectively, the central shaft is connected to two star wheel support frames (2) through pins in the holes 2 (15) and 3 (16), and the two star wheel fixing plates (8) are fixed on On both sides of the star wheel (1), a guide column (13) is arranged in the hole 1 (14) in the middle of the central axis, and steel ball 1 (10) and steel ball 2 (11) are arranged at both ends of the guide column (13), and the length of the guide column (13) is smaller than the diameter of the central axis (12). A notch (23) is arranged at the upper end of the hole 1 (14) of the central axis, and the notch (23) can be adapted to the steel ball 1 (10). The notch (23) can be used as a position to cooperate with the steel ball 1 (10) to prevent the star wheel from rotating. When the building climbing frame moves at a uniform speed along with the guide rail at a set speed, a plurality of star wheel outer feet on the star wheel can be inserted into a plurality of rectangular holes on the guide rail in sequence, so that the star wheel rotates, and the building climbing frame can achieve normal lifting and lowering work. When the building climbing frame moves downward with the guide rail at an accelerated speed, the star wheel is self-locking and cannot rotate, and the star wheel outer feet are in the rectangular holes on the guide rail, so that the guide rail stops moving, and the building climbing frame connected to the guide rail stops moving, which can achieve self-locking and anti-falling. The connecting hole of the guide rail is arranged at the lower part of the T-shaped structure, and a plurality of rectangular holes on the guide rail are arranged at the upper part of the T-shaped structure. The building climbing frame is fixed on the guide rail through the connecting hole of the guide rail, and the outer feet of the star wheel are connected with the plurality of rectangular holes by plugging; The lifting guide seat is a load-bearing fixed frame, and an open hoop frame is arranged at the end of the lifting guide seat, and the guide rail can be inserted into the hoop frame, and the guide rail can move up and down in the hoop frame; the star wheel base is installed on the lifting guide seat.

2. The anti-fall device for lifting equipment according to claim 1, characterized in that: The U-shaped ring frame comprises two support rods (6), a cross bar, and a U-shaped ring frame support seat (5). The bottoms of the two support rods (6) are hinged to the U-shaped ring frame support seat (5). A cross bar (9) is fixed to the tops of the two support rods (6). A handle (7) is provided at the end of the cross bar (9). When the U-shaped ring frame is pressed manually, the cross bar can be inserted between two adjacent star wheel outer feet (4), thereby forming a secondary self-locking anti-falling function and realizing a static support function.

3. The anti-fall device for lifting equipment according to claim 1, characterized in that: The two star wheel fixing disks (8) are provided with protective covers (20), the contact positions of the two star wheel fixing disks (8) and the star wheels are provided with O-rings (17), the contact positions of the two star wheel fixing disks (8) and the star wheels (1) are provided with oil seals (18), and the contact positions of the two star wheel fixing disks (8) and the central axis are provided with dust seals (19); the notch (23) at the end of the hole 1 (14) is in the shape of a curved surface, and the curvature radius of the curved surface of the notch (23) at the end of the hole 1 (14) is the same as or similar to the curvature radius of the steel ball 1 (10) and the steel ball 2 (11).

4. A control method for a fall arrester for a lifting device according to claim 1, characterized in that There are the following steps: 1) When the building climbing frame and the guide rail move at a set speed, a plurality of star wheel outer feet on the star wheel (1) can be respectively inserted into a plurality of rectangular holes on the guide rail in sequence, so that the star wheel rolls and rotates on the guide rail; when the star wheel (1) rotates forward and reverse at a set speed, the central axis (12) does not rotate, and the guide column (13) in the hole 1 (14) of the central axis (12) presses the steel ball 2 (11) into the star wheel concave position (22) by gravity, and the steel ball 1 (10) on the top of the guide column (13) shrinks into the hole 1 (14). When the star wheel rotates , the inner teeth (21) of the star wheel can squeeze the steel ball 1 (10) into the hole 1 (14), and the inner teeth (21) of the star wheel can smoothly pass over the top of the steel ball 1 (10); the steel ball 2 (11) located at the lower end of the hole, when the star wheel rotates, since there is no gap at the lower end of the hole, the inner teeth (21) of the star wheel can squeeze the steel ball 2 (11) into the hole 1 (14), and the inner teeth (21) of the star wheel can smoothly pass under the steel ball 2 (11), and the steel ball 1 (10) moves linearly with the guide column, the star wheel can operate normally, and the building climbing frame can achieve normal lifting work; 2) When the building climbing frame and the guide rail move downward at an accelerated speed, the star wheel (1) rotates counterclockwise with the guide rail at an accelerated speed. Since the guide column (13) cannot quickly press the steel ball 2 (11) down into the star wheel concave position (22), the steel ball 1 (10) cannot quickly shrink into the hole 1 (14). The steel ball 1 (10) is sent into the notch (23) at the upper end of the hole 1 (14) by the inner teeth (21) of the star wheel, and the star wheel (1) is stuck. The star wheel (1) cannot rotate, and the outer foot of the star wheel is in the rectangular hole on the guide rail, so that the guide rail stops moving, and the building climbing frame connected to the guide rail stops moving, which can achieve self-locking and anti-falling. When the building climbing frame and the guide rail are rising, the star wheel rotates clockwise, and there is no notch at the lower end of the hole one (14) of the central axis, and the clockwise speed range of the star wheel is set to 1-3 revolutions per second; when the building climbing frame and the guide rail are descending, the star wheel rotates counterclockwise, and a notch is provided on the left side of the upper end of the hole one (14) of the central axis, and the clockwise speed range of the star wheel is set to 0.5-10 revolutions per minute. When the fixed value is taken within the above range and the lifting equipment is operated at a constant speed clockwise and counterclockwise, the lifting equipment followed by the fall arrester can rise and descend normally.

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