Swing arm type anti-inclination safety lock for hanging basket construction

Abstract

The swing arm type anti-inclination safety lock for hanging basket construction comprises a lock box, a torsion rotating shaft is rotationally connected to an inner cavity of the lock box, a swing arm assembly is arranged on the left side of the top of the torsion rotating shaft, and the swing arm assembly comprises two swing arms; the front end and the rear end of the surface of the torsion rotating shaft both penetrate to the outer side of the lock box and are fixedly connected with swing arms, a rotatable pulley yoke is rotatably arranged on the left side between the two swing arms, and a rotatable auxiliary pulley and a rotatable main pulley are arranged on the two sides of an inner cavity of the pulley yoke correspondingly. Through cooperative use of the lock box, the torsion rotating shaft and the swing arm assembly, when the lifting steel rope breaks, the safety rope is quickly locked, and the hanging basket is prevented from inclining; and meanwhile, under cooperative use of the shoveling assembly, foreign matter on the surface of the safety rope can be shoveled, the foreign matter is effectively prevented from entering the lock box, and it is guaranteed that the lock box slides on the surface of the safety rope.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and in particular relates to a swing-arm anti-tilt safety lock for suspended platform construction. Background Technology

[0002] Suspended platforms for high-altitude operations are widely used temporary work equipment in building facade construction, equipment installation, and maintenance. Their operational safety is directly related to the personal safety of construction workers. In a suspended platform system, the safety lock is one of the core safety protection components. Its main function is to brake the suspended platform in time when abnormal conditions occur during operation, preventing the suspended platform from losing control and falling or tilting excessively, thereby avoiding fall accidents. Currently, a common type of safety lock in engineering applications is the swing-arm anti-tilt safety lock. This type of safety lock generally consists of multiple mechanical components such as rope clamps, sleeves, torsion springs, swing arms, and rollers. Structurally, it monitors the operating status of the suspended platform through the force relationship between the swing arm and the working wire rope. Under normal operating conditions, the working wire rope remains basically vertical and continuously presses against the rollers on the swing arm, keeping the rope clamp in the open state, thus ensuring that the safety wire rope can pass freely and smoothly inside the safety lock. When the suspended platform tilts due to uneven load, operational errors, or external factors, or in extreme cases when the working wire rope breaks, the pressure acting on the swing arm will be significantly reduced or even disappear. Under the combined action of the torsion spring's restoring force and the friction between the rope clamp and the safety wire rope, the swing arm swings rapidly, causing the rope clamp to close and tighten the safety wire rope, thereby limiting the suspended platform from continuing to tilt or fall and achieving safety protection.

[0003] The swing-arm anti-tilt safety lock has a relatively mature structure and fast response, playing an important role in the safety protection system of suspended platforms. However, with the increasing complexity of construction environments and the growing demands for the reliability and ease of use of safety locks, existing safety locks face technical challenges in practical applications. Suspended platform construction typically takes place in open or semi-open environments, involving various processes such as spraying, concrete work, and plastering. This makes it easy for foreign objects such as paint, mud, and sand to adhere to the surface of the safety wire rope. These foreign objects can enter the safety lock during rope installation or platform operation and may adhere to the surfaces of critical components such as rope clamps, swing arms, or rollers, altering friction conditions or affecting the flexible rotation of these components. This can lead to slow or jammed safety lock action, or even failure to reliably and promptly clamp the safety wire rope when locking is required, thus reducing the overall safety protection effect. Summary of the Invention

[0004] The purpose of this invention is to provide a swing arm type anti-tilt safety lock for suspended platform construction. The technical problem to be solved is that foreign objects may adhere to the surface of key components such as rope clamps, swing arms or rollers, which may cause the safety lock to move slowly or get stuck, or even fail to clamp the safety wire rope in a timely and reliable manner when locking is required, thereby reducing the overall safety protection effect.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A swing-arm anti-tilt safety lock for suspended platform construction includes a lock box, a torque shaft rotatably connected to the inner cavity of the lock box, a swing arm assembly provided on the left side of the top of the torque shaft, the swing arm assembly including two swing arms, the front end and rear end of the surface of the torque shaft extending through to the outside of the lock box and fixedly connected to the swing arms, a rotatable pulley frame rotatably provided on the left side between the two swing arms, a rotatable auxiliary pulley and a main pulley respectively provided on both sides of the inner cavity of the pulley frame, a lifting steel cable passing between the main pulley and the auxiliary pulley, a support base fixedly connected to the right side of the top of the lock box, a scraping assembly provided in the inner cavity of the support base; the scraping assembly includes a rotating steel plate rotatably connected to the inner cavity of the support base, a connecting hook welded to the front end and rear end of the left side of the rotating steel plate, a hanging hole opened on the top of the swing arm, and the connecting hook engaging in the inner cavity of the hanging hole.

[0006] The present invention further comprises the following: the inner cavity of the main pulley is rotatably connected to a connecting pin via a bearing; the surface of the swing arm is provided with three adjustment holes adapted to the connecting pin; the connecting pin passes through the inner cavity of the adjustment hole and is threaded with a hexagonal nut.

[0007] The present invention further comprises the following: a swing-arm anti-tilt safety lock for suspended platform construction as described above; a rotating seat is welded to the right side of the rotating steel plate; a fixed seat is fixedly connected to the right side of the top of the lock box; and an arc-shaped scraper is fixedly connected to the top of both the rotating seat and the fixed seat.

[0008] The swing-arm anti-tilt safety lock for suspended platform construction described above further includes: rotating pins fixedly connected to the bottom of both the front and rear sides of the rotating steel plate, and the rotating pins being rotatably connected to the inner cavity of the support base.

[0009] The present invention further comprises the following: a torsion spring is sleeved on the surface of the rotating pin, one end of the torsion spring is fastened to the rotating steel plate, and the other end of the torsion spring is fastened to the inner wall of the support base.

[0010] The present invention further comprises the following: a swing arm type anti-tilt safety lock for suspended platform construction as described above; guide pins are fixedly connected to the top of the front and rear sides of the lock box; an arc groove is formed on the surface of the swing arm; and the guide pin is inserted into the arc groove.

[0011] The present invention further comprises the following: a swing-arm anti-tilt safety lock for suspended platform construction as described above, wherein connecting ear plates are welded to both sides of the bottom of the lock box, and mounting holes are provided on the surface of the connecting ear plates.

[0012] The swing-arm anti-tilt safety lock for suspended platform construction described above is further provided with anti-slip grooves on the outer periphery of both the main pulley and the auxiliary pulley, and the anti-slip grooves are evenly distributed along the circumference of the pulleys.

[0013] The beneficial effects of this invention are: This invention, through the coordinated use of a lock box, a torque shaft, and a swing arm assembly, quickly locks the safety rope in the event of a breakage in the lifting cable, preventing the suspended platform from tilting. Simultaneously, with the assistance of a removal component, it removes foreign objects from the surface of the safety rope, effectively preventing them from entering the lock box and ensuring the lock box does not slip on the safety rope surface. In other words, this invention solves the technical problem that foreign objects may adhere to the surfaces of critical components such as rope clamps, swing arms, or rollers, causing slow or jammed safety lock action, or even failing to clamp the safety wire rope promptly and reliably when locking is required, thus reducing the overall safety protection effect.

[0014] This invention uses a combination of a rotating pin and a torsion spring to elastically torsion the rotating steel plate, enabling the rotating steel plate to actively drive the rotating seat to return to its original position on the right. This allows the arc-shaped scraper mounted on the rotating seat to tightly wrap around the surface of the safety rope, removing foreign objects from the surface of the safety rope.

[0015] This invention allows users to adjust the position of the main pulley by using a connecting pin, adjusting hole, and hexagonal nut, thereby adjusting the angle of pressure of the swing arm on the lifting cable and adapting to the distance between the safety rope and the lifting cable. Attached Figure Description

[0016] The advantages of the present invention, both above and / or other aspects, will become clearer and more readily understood through the following detailed description taken in conjunction with the accompanying drawings, which are merely illustrative and do not limit the invention, wherein: Figure 1 This is a front view schematic diagram of a swing-arm anti-tilt safety lock according to an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of a swing-arm anti-tilt safety lock according to an embodiment of the present invention; Figure 3 This is an exploded perspective view of a swing arm assembly according to an embodiment of the present invention; Figure 4 This is an exploded perspective view of a support base and a removal assembly according to an embodiment of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Lock box, 2. Torque shaft, 3. Swing arm assembly, 31. Swing arm, 32. Pulley frame, 33. Main pulley, 34. Auxiliary pulley, 35. Connecting pin, 36. Adjusting hole, 37. Hex nut, 4. Support base, 5. Shovel assembly, 51. Rotating steel plate, 52. Connecting hook, 53. Hanging hole, 54. Rotating seat, 55. Fixed seat, 56. Arc-shaped shovel, 6. Rotating pin, 7. Torsion spring, 8. Guide pin, 9. Arc-shaped groove, 10. Connecting ear plate. Detailed Implementation

[0018] In the following description, embodiments of the swing-arm anti-tilt safety lock for suspended platform construction of the present invention will be described with reference to the accompanying drawings.

[0019] The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the invention, and are illustrative and exemplary, and should not be construed as limiting the implementation or scope of the invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0020] The accompanying drawings in this specification are schematic diagrams to aid in illustrating the concept of the invention, and schematically show the shapes of the various parts and their interrelationships. Please note that, in order to clearly demonstrate the structure of the components in the embodiments of the invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0021] The following combination Figure 1-4This invention describes a swing-arm anti-tilt safety lock for suspended platform construction, comprising a lock box 1. The lock box 1 may be a metal shell structure, preferably formed by stamping or casting of steel plate. Its inner cavity forms an installation space for accommodating the torque shaft 2 and the locking mechanism. The lock box 1 as a whole has sufficient structural strength to withstand the impact loads generated during the operation of the suspended platform and the action of the safety lock. The inner cavity of the lock box 1 is rotatably connected to a torque shaft 2. A swing arm assembly 3 is provided on the left side of the top of the torque shaft 2. The swing arm assembly 3 includes two swing arms 31. The front end and rear end of the surface of the torque shaft 2 both extend to the outside of the lock box 1 and are fixedly connected to the swing arms 31. A rotatable pulley frame 32 is rotatably provided on the left side between the two swing arms 31. A rotatable auxiliary pulley 34 and a main pulley 33 are respectively provided on both sides of the inner cavity of the pulley frame 32. A lifting steel cable passes through the main pulley 33 and the auxiliary pulley 34. In a preferred embodiment, the outer periphery of the main pulley 33 and the auxiliary pulley 34 are provided with anti-slip grooves, which are evenly distributed along the circumference of the pulley. The inner cavity of the main pulley 33 is rotatably connected to the connecting pin 35 via a bearing. The surface of the swing arm 31 is provided with three adjustment holes 36 that are adapted to the connecting pin 35. The connecting pin 35 passes through the inner cavity of the adjustment hole 36 and is threaded with a hexagonal nut 37. Through the cooperation of the connecting pin 35, the adjustment hole 36 and the hexagonal nut 37, the user can adjust the position of the main pulley 33, thereby adjusting the angle of the swing arm 31 on the lifting cable, thus adapting to the distance between the safety rope and the lifting cable.

[0022] A support base 4 is fixedly connected to the top right side of the lock box 1. A scraping assembly 5 is installed inside the support base 4. Guide pins 8 are fixedly connected to the top of the front and rear sides of the lock box 1. An arc-shaped groove 9 is formed on the surface of the swing arm 31, into which the guide pin 8 is inserted. Connecting ear plates 10 are welded to both sides of the bottom of the lock box 1, and mounting holes are formed on the surface of the connecting ear plates 10. The radius of curvature of the arc-shaped groove 9 matches the rotation trajectory of the swing arm 31 around the torque shaft 2. The guide pin 8 slides within the arc-shaped groove 9 to limit the swing angle range of the swing arm 31, preventing excessive rotation and ensuring that the locking mechanism can work reliably within a predetermined angle range.

[0023] refer to Figure 1-4The scraping assembly 5 includes a rotating steel plate 51 rotatably connected to the inner cavity of the support base 4. Connecting hooks 52 are welded to the front and rear ends of the left side of the rotating steel plate 51. A hanging hole 53 is provided at the top of the swing arm 31, and the connecting hooks 52 engage with the inner cavity of the hanging hole 53. A rotating seat 54 is welded to the right side of the rotating steel plate 51. A fixed seat 55 is fixedly connected to the right side of the top of the lock box 1. An arc-shaped scraper 56 is fixedly connected to the top of both the rotating seat 54 and the fixed seat 55. Rotating pins 6 are fixedly connected to the bottom of the front and rear sides of the rotating steel plate 51. The rotating pins 6 are rotatably connected to the inner cavity of the support base 4. A torsion spring 7 is sleeved on the surface of the rotating pin 6. One end of the torsion spring 7 is fastened to the rotating steel plate 51, and the other end is fastened to the inner wall of the support base 4. The rotating steel plate 51 has an overall plate-like structure, and it is rotatably set relative to the support base 4 by the rotating pins 6, so that under the elastic force of the torsion spring 7, it always tends to bring the arc-shaped scraper 56 closer to the safety rope. The inner contour of the arc-shaped shovel 56 is adapted to the outer diameter of the safety rope. It can be made of wear-resistant metal or engineering plastic material to ensure the removal of foreign objects while avoiding damage to the surface of the safety rope.

[0024] The above solution is adopted: by setting up the removal component 5, with the cooperation of the rotating seat 54, the fixed seat 55 and the arc-shaped scraper 56, foreign objects on the surface of the safety rope are removed, thereby effectively preventing foreign objects from entering the inner cavity of the lock box 1 and ensuring that the lock box 1 can slide smoothly on the surface of the safety rope. Through the cooperation of the rotating pin 6 and the torsion spring 7, the rotating steel plate 51 is elastically torn, so that the rotating steel plate 51 can actively drive the rotating seat 54 to reset to the right, thereby making the arc-shaped scraper 56 tightly wrap around the surface of the safety rope and remove foreign objects on the surface of the safety rope.

[0025] Working principle: When using the swing-arm anti-tilt safety lock of the present invention, the user fixes the lock box 1 to the side of the suspended basket by connecting the ear plate 10. Then, the user pushes the swing arm 31 to the right to rotate it. At this time, the locking mechanism in the inner cavity of the lock box 1 is in the open state under the linkage of the swing arm 31 and the torque shaft 2. The locking mechanism is a rope clamp or wedge locking structure conventionally provided in the swing-arm anti-tilt safety lock. Under the rotation drive of the swing arm 31 and the torque shaft 2, it clamps or wedges the safety rope to achieve rapid braking of the suspended basket. The specific structural form of the locking mechanism does not constitute a limitation on the scope of protection of the present invention.

[0026] The user then rotates the rotating steel plate 51 to the left, causing the rotating steel plate 51 to drive the connecting hook 52 to engage in the inner cavity of the hanging hole 53. At this time, the torsion spring 7 is compressed. During the rotation, the rotating steel plate 51 drives the rotating seat 54 to rotate around the rotating pin, so that the rotating seat moves away from the fixed seat. At this time, the opening between the rotating seat and the fixed seat opens, which facilitates the installation of the safety rope. The user then passes the safety rope from the top of the lock box 1 to the bottom of the lock box 1. At this time, the safety rope also passes through the locking area of ​​the locking mechanism. Next, the user gradually pushes the swing arm 31 to the right. At this time, the torsion spring 7, which is in a compressed state, rebounds. The spring force drives the rotating steel plate 51 to rotate to the right and reset. The torsion spring can prevent the connecting hook 52 from disengaging from the hanging hole 53 during the movement. At this time, the rotating seat 54 moves towards the fixed seat under the action of the rotating steel plate 51. At this time, the rotating seat and the fixed seat are in the removal position. During use, the main pulley 33 maintains the unlocking angle under the pressure of the lifting steel cable. During the lifting and lowering of the basket, the lock box 1 rises and falls on the surface of the safety rope. At the same time, the arc-shaped scraper 56 removes foreign objects from the surface of the safety rope under the action of the lock box 1, effectively preventing foreign objects from entering the interior of the lock box 1 and ensuring the stable lifting and lowering of the torque shaft 2.

[0027] When the lifting cable breaks, the squeezing pressure of the lifting rope on the main pulley 33 disappears. At this time, the swing arm 31 rotates to the left under the action of the torque shaft 2, and the locking mechanism in the inner cavity of the lock box 1 locks the safety rope quickly. At this time, the rotating seat 54 moves away from the fixed seat under the drive of the rotating steel plate 51, which facilitates the smooth removal of the safety rope during the subsequent hazard removal and safety rope disassembly process.

[0028] The technical features disclosed above are not limited to the combinations of the disclosed features with other features. Those skilled in the art can also make other combinations of the technical features according to the purpose of the invention to achieve the purpose of the invention.

Claims

1. A swing-arm type anti-tilt safety lock for suspended platform construction, characterized in that, The lock includes a lock box (1), the inner cavity of which is rotatably connected to a torque shaft (2). A swing arm assembly (3) is provided on the left side of the top of the torque shaft (2). The swing arm assembly (3) includes two swing arms (31). The front end and rear end of the surface of the torque shaft (2) extend to the outside of the lock box (1) and are fixedly connected to the swing arms (31). A rotatable pulley frame (32) is rotatably provided on the left side between the two swing arms (31). Rotatable auxiliary pulleys (34) and main pulleys (35) are respectively provided on both sides of the inner cavity of the pulley frame (32). 3) A lifting steel cable is passed between the main pulley (33) and the auxiliary pulley (34). A support base (4) is fixedly connected to the right side of the top of the lock box (1). A scraping component (5) is provided in the inner cavity of the support base (4). The scraping component (5) includes a rotating steel plate (51) rotatably connected to the inner cavity of the support base (4). A connecting hook (52) is welded to the front and rear ends of the left side of the rotating steel plate (51). A hanging hole (53) is opened at the top of the swing arm (31). The connecting hook (52) is engaged in the inner cavity of the hanging hole (53).

2. A swing-arm type anti-tilt safety lock for suspended platform construction according to claim 1, characterized in that, The inner cavity of the main pulley (33) is rotatably connected to the connecting pin (35) via a bearing. The surface of the swing arm (31) is provided with three adjustment holes (36) that are adapted to the connecting pin (35). The connecting pin (35) passes through the inner cavity of the adjustment hole (36) and is threaded with a hexagonal nut (37).

3. A swing-arm type anti-tilt safety lock for suspended platform construction according to claim 2, characterized in that, A rotating seat (54) is welded to the right side of the rotating steel plate (51), and a fixed seat (55) is fixedly connected to the right side of the top of the lock box (1). An arc-shaped shovel (56) is fixedly connected to the top of both the rotating seat (54) and the fixed seat (55).

4. A swing-arm type anti-tilt safety lock for suspended platform construction according to claim 3, characterized in that, The bottom of the front and rear sides of the rotating steel plate (51) is fixedly connected with rotating pins (6), which are rotatably connected to the inner cavity of the support base (4).

5. A swing-arm type anti-tilt safety lock for suspended platform construction according to claim 4, characterized in that, A torsion spring (7) is fitted on the surface of the rotating pin (6). One end of the torsion spring (7) is fastened to the rotating steel plate (51), and the other end of the torsion spring (7) is fastened to the inner wall of the support base (4).

6. A swing-arm type anti-tilt safety lock for suspended platform construction according to claim 5, characterized in that, The top of the front and rear sides of the lock box (1) is fixedly connected with guide pins (8), and the surface of the swing arm (31) is provided with an arc groove (9), and the guide pin (8) is inserted into the arc groove (9).

7. A swing-arm type anti-tilt safety lock for suspended platform construction according to claim 6, characterized in that, The lock box (1) has connecting ear plates (10) welded on both sides of its bottom, and the surface of the connecting ear plates (10) has mounting holes.

8. A swing-arm type anti-tilt safety lock for suspended platform construction according to claim 7, characterized in that, The outer periphery of both the main pulley (33) and the auxiliary pulley (34) is provided with anti-slip grooves, which are evenly distributed along the circumference of the pulleys.

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