CN211644250U

CN211644250U - Anti-falling device of lifting platform

Info

Publication number: CN211644250U
Application number: CN201922388587.9U
Authority: CN
Inventors: 李洪强; 唐文; 王友鑫; 邱龙; 郑明军; 黄晖; 罗茂耕; 方智茂; 郑宏武; 刘逢贵; 邱启略
Original assignee: Fujian Jianzhong Construction Technology Co ltd
Current assignee: Fujian Jianzhong Construction Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-09
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to a falling-proof device of a lifting platform, which comprises guide rails fixed on both sides of a truss and falling-proof mechanisms fixed on the front ends of both sides of the lifting platform; the guide rail is I-shaped steel; the flanges at two sides of the wing plate at one side of the guide rail close to the lifting platform are correspondingly and uniformly provided with a plurality of transversely-communicated lifting holes at intervals; the anti-falling mechanism can slide on the guide rail; the anti-falling mechanism comprises a base with an open upper end and fixed with the front end of the lifting platform; a vertical middle plate is fixed in the middle of the base; two sides of the middle plate in the base are respectively provided with a limiting component; the limiting mechanism comprises a support arm, a stop block and a cylinder; the front end of the base is provided with a detection hole corresponding to the lifting hole positions on the two sides respectively; the two arms are respectively fixed on the two inner side walls of the detection hole; the lower end of the cylinder is fixed at the bottom of the base; the middle part of the stop block is hinged with the two support arms through a pin, the front end of the stop block can be inserted into the lifting hole, and the rear end of the stop block can be abutted against a piston rod of the air cylinder after penetrating out of the detection hole.

Description

Anti-falling device of lifting platform

Technical Field

The utility model relates to a lift platform's anti-falling device belongs to construction protection technical field.

Background

The attached lifting platform is an external protection scaffold developed in nearly more than ten years and applied to high-rise and super high-rise buildings, is provided with lifting power and can slowly climb or descend along the external vertical surface of a building structure. Compared with the traditional steel pipe fastener type scaffold and fixed scaffold, the attached lifting platform used in the construction process of high-rise and super high-rise buildings has the advantages of saving a large amount of labor and materials, being simple and convenient to operate, easy to manage, protecting the environment and the like, so that the attached lifting platform is popularized and applied in the construction process of the high-rise and super high-rise buildings in a large amount. The attached lifting platform requires to be provided with safety devices for preventing overturning and falling in the lifting, descending and using processes; at present, most of attached lifting platforms are provided with anti-falling devices for emergency braking when a frame body falls, but some anti-falling devices are manufactured finely and have high production cost; some of the devices need to be maintained manually frequently, and the use cost is high; some brakes are insensitive and have potential safety hazards.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problem, the utility model provides a lifting platform's anti-falling device, its simple structure, the preparation is simple and convenient, and the action is sensitive, and the effect is reliable, and security and stability are high, locking problem when can solving lifting platform abnormal whereabouts.

The technical scheme of the utility model as follows:

a falling prevention device of a lifting platform comprises guide rails fixed on two sides of a truss and falling prevention mechanisms fixed at the front ends of the two sides of the lifting platform; the guide rail is I-shaped steel; the flanges at two sides of the wing plate at one side of the guide rail close to the lifting platform are correspondingly and uniformly provided with a plurality of transversely-communicated lifting holes at intervals; the anti-falling mechanism can slide on the guide rail; the anti-falling mechanism comprises a base with an open upper end and fixed with the front end of the lifting platform; a vertical middle plate is fixed in the middle of the base; two sides of the middle plate in the base are respectively provided with a limiting component; the limiting component comprises a support arm, a stop block and a cylinder; the front end of the base is provided with a detection hole corresponding to the lifting hole positions on the two sides respectively; the two support arms are respectively fixed on the two inner side walls of the detection hole; the lower end of the cylinder is fixed at the bottom of the base; the middle part of the stop block is hinged with the two support arms through a pin, the front end of the stop block can be inserted into the lifting hole, and the rear end of the stop block can abut against a piston rod of the air cylinder after penetrating out of the detection hole; the lifting platform rises, the stop block rotates around the pin, and the front end of the stop block can be separated from the lifting hole.

Further, the anti-toppling device also comprises an anti-toppling mechanism; the two anti-toppling mechanisms are respectively hinged to the outer parts of the two sides of the base; the anti-toppling mechanism comprises an anti-toppling arm hinged with the base and a clamping block fixed at the other end of the anti-toppling arm; a plurality of transversely through limiting holes are uniformly arranged on the web plate of the guide rail at intervals; the two clamping blocks respectively positioned at the two sides of the base can be clamped and fixed with the limiting holes.

Furthermore, the tail end of the clamping block is provided with a chamfer.

Furthermore, the clamping blocks on the two anti-tilting arms of the two anti-tilting mechanisms on the same base are respectively clamped in the two adjacent limiting holes.

Furthermore, a buffer block is further fixed at the upper end of the piston rod of the air cylinder.

The utility model discloses following beneficial effect has:

1. the anti-falling device of the lifting platform is simple in structure, simple and convenient to manufacture, sensitive in action, reliable in action, and high in safety and stability.

2. The lifting platform is limited through the lifting hole and the stop block, the stop block is supported by the air cylinder at the tail end, the stop block can be prevented from being separated from the lifting hole, the lifting platform cannot be prevented from falling, and the problem of locking when the lifting platform falls abnormally is solved.

3. The anti-toppling mechanism is added, so that the lifting platform can be prevented from toppling, and meanwhile, the lifting platform can be prevented from falling abnormally.

Drawings

Fig. 1 is a schematic view of the usage state of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a partially enlarged view of a portion a of fig. 2.

Fig. 4 is a partial cross-sectional view of the present invention in use.

Fig. 5 is a schematic view of the overall structure of the fall protection device.

Fig. 6 is a front view of fig. 5.

Fig. 7 is a top view of fig. 5.

Fig. 8 is a schematic view of the internal structure of the base.

The reference numbers in the figures denote:

1. a truss; 2. a guide rail; 21. a web; 22. a wing plate; 23. a lifting hole; 24. a limiting hole; 3. a lifting platform; 4. a fall prevention mechanism; 41. a base; 42. a middle plate; 43. an outlet hole is detected; 44. a support arm; 45. a stop block; 46. a cylinder; 47. a buffer block; 5. an anti-toppling mechanism; 51. an anti-roll arm; 52. and a clamping block.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-8, a fall-preventing device for a lifting platform comprises guide rails 2 fixed on two sides of a truss 1 and a fall-preventing mechanism 4 fixed on the front ends of two sides of a lifting platform 3; the guide rail 2 is I-shaped steel; the guide rail 2 is close to a wing plate 22 on one side of the lifting platform 3, and flanges on two sides of the guide rail are correspondingly and uniformly provided with a plurality of transversely-communicated lifting holes 23 at intervals; the anti-falling mechanism 4 can slide on the guide rail 2; the anti-falling mechanism 4 comprises a base 41 which is fixed with the front end of the lifting platform 3 and is open at the upper end; a vertical middle plate 42 is fixed in the middle of the base 41; a limiting component is respectively arranged on two sides of the middle plate 42 in the base 41; the limiting component comprises a support arm 44, a stop block 45 and a cylinder 46; a detection hole 43 is respectively formed in the front end of the base 41 corresponding to the positions of the lifting holes 23 on the two sides; the two support arms 44 are respectively fixed on the two inner side walls of the detecting hole 43; the lower end of the cylinder 46 is fixed at the bottom of the base 41; the middle part of the stop block 45 is hinged with the two support arms 44 through a pin, the front end of the stop block can be inserted into the lifting hole 23, and the rear end of the stop block can abut against a piston rod of the air cylinder 46 after penetrating out of the detection hole 43; the lifting platform 3 rises, the stop block 45 rotates around the pin, and the front end can be pulled out from the lifting hole 23.

In the above embodiment, the two sides of the truss 1 near one end of the lifting platform 3 are respectively fixed with the guide rails 2, and the two sides of the lifting platform 3 near one end of the truss 1 are respectively fixed with the anti-falling mechanisms 4 matched with the guide rails 2; the flanges at the two sides of the wing plate 22 of the guide rail 2 are uniformly provided with a plurality of lifting holes 23 at intervals, and a limiting component in the anti-falling mechanism 4 can be matched and clamped with the lifting holes 23 to prevent the whole lifting platform 3 from falling abnormally. The limiting component support arm 44, the stop block 45 and the air cylinder 46, the middle part of the stop block 45 is hinged with the two support arms 44 through a pin, the front end of the stop block can be inserted into the lifting hole 23, and the rear end of the stop block can abut against a piston rod of the air cylinder 46 after penetrating out of the detection hole 43. The front end of the stop block 45 is inserted into the lifting hole 23, the tail end of the stop block can abut against a piston rod of the air cylinder 46, the lifting platform 3 rises, the stop block 45 rotates around the pin, the front end of the stop block can be separated from the lifting hole 23, and the stop block 45 cannot obstruct the normal rising process of the lifting platform 3. When the lifting platform 3 falls abnormally, the stop block 45 cannot be separated from the lifting hole 23 because the tail end of the stop block is pressed against the piston rod of the air cylinder 46, so that the lifting platform is prevented from falling. The driving cylinder 46 retracts the piston rod, so that the lifting platform 3 can fall normally.

Further, the anti-toppling device also comprises an anti-toppling mechanism 5; the two anti-toppling mechanisms 5 are respectively hinged to the outer parts of the two sides of the base 41; the anti-tipping mechanism 5 comprises an anti-tipping arm 51 hinged with the base 41 and a clamping block 52 fixed at the other end of the anti-tipping arm 51; a plurality of transversely through limiting holes 24 are uniformly arranged on the web plate 21 of the guide rail 2 at intervals; the two engaging blocks 52 respectively located at both sides of the base 41 can be engaged and fixed with the limiting hole 24. The anti-toppling mechanism 5 achieves the anti-toppling effect by clamping the clamping block 52 in the limiting hole 24 of the web plate 21 of the guide rail 2. Meanwhile, when the lifting platform is prevented from falling down, the anti-falling mechanism 5 can also prevent the lifting platform 3 from falling down abnormally through clamping.

In particular, the anti-toppling mechanism 5 should be arranged close to the upper end of the lifting platform 3 in order to achieve a better anti-toppling effect.

In particular, the anti-toppling mechanism 5 should be reused when the lifting platform 3 reaches a predetermined construction height, so that on one hand, the anti-toppling and anti-falling effects can be achieved, and on the other hand, the normal lifting process of the lifting platform 3 is prevented from being hindered.

Further, the end of the engaging block 52 is provided with a chamfer. The chamfer can facilitate the engagement of the engagement block 52 to the stopper hole 24.

Furthermore, in the two anti-toppling mechanisms 5 on the same base 41, the engaging blocks 52 on the two anti-toppling arms 51 are respectively engaged in the two vertically adjacent limiting holes 24. The two clamping blocks 52 on the same base 41 are respectively clamped in the two limiting holes 24 adjacent to each other up and down, so that the clamping area of the clamping blocks 52 and the limiting holes 24 can be increased, the clamping effect is improved, the stability of the anti-toppling mechanism 5 is improved, and the stability and the safety of the whole device are further improved.

Further, a buffer block 47 is fixed on the upper end of the piston rod of the cylinder 46.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a falling protection device of lift platform which characterized in that: comprises guide rails (2) fixed on two sides of a truss (1) and anti-falling mechanisms (4) fixed on the front ends of two sides of a lifting platform (3); the guide rail (2) is made of I-shaped steel; the guide rail (2) is close to a wing plate (22) on one side of the lifting platform (3), and flanges on two sides of the guide rail are correspondingly and uniformly provided with a plurality of transversely-communicated lifting holes (23) at intervals; the anti-falling mechanism (4) can slide on the guide rail (2); the anti-falling mechanism (4) comprises a base (41) which is fixed with the front end of the lifting platform (3) and is open at the upper end; a vertical middle plate (42) is fixed in the middle of the base (41); two sides of the middle plate (42) in the base (41) are respectively provided with a limiting component; the limiting component comprises a support arm (44), a stop block (45) and a cylinder (46); a detection hole (43) is respectively formed in the front end of the base (41) corresponding to the positions of the lifting holes (23) on the two sides; the two support arms (44) are respectively fixed on the two inner side walls of the detecting hole (43); the lower end of the cylinder (46) is fixed at the bottom of the base (41); the middle part of the stop block (45) is hinged with the two support arms (44) through a pin, the front end of the stop block can be inserted into the lifting hole (23), and the rear end of the stop block can abut against a piston rod of the air cylinder (46) after penetrating out of the detection hole (43); the lifting platform (3) rises, the stop block (45) rotates around the pin, and the front end of the stop block can be pulled out of the lifting hole (23).

2. A device for preventing fall of a lifting platform as claimed in claim 1, wherein: also comprises an anti-toppling mechanism (5); the two anti-toppling mechanisms (5) are respectively hinged to the outer parts of the two sides of the base (41); the anti-toppling mechanism (5) comprises an anti-toppling arm (51) hinged with the base (41) and a clamping block (52) fixed at the other end of the anti-toppling arm (51); a plurality of transversely through limiting holes (24) are uniformly arranged on a web plate (21) of the guide rail (2) at intervals; the two clamping blocks (52) respectively positioned at two sides of the base (41) can be clamped and fixed with the limiting hole (24).

3. A device for preventing fall of a lifting platform as claimed in claim 2, wherein: the tail end of the clamping block (52) is provided with a chamfer.

4. A device for preventing fall of a lifting platform as claimed in claim 2, wherein: and the clamping blocks (52) on the two anti-toppling arms (51) of the two anti-toppling mechanisms (5) on the same base (41) are respectively clamped in the two limiting holes (24) which are adjacent up and down.

5. A device for preventing fall of a lifting platform as claimed in claim 1, wherein: and a buffer block (47) is further fixed at the upper end of the piston rod of the air cylinder (46).