Anti-hanging cable arm

Abstract

The invention belongs to the field of construction hoists, and provides an anti-hanging cable arm for a construction hoist, which comprises an arm body, a connecting rod device, a cable net sleeve, a force adjusting device, a clamping device and a limit switch, the arm body is of a cavity structure; the connecting rod device is hinged and fixed on the arm body through a shaft or a bolt and can rotate around a hinge point; a cable net sleeve is installed at one end of the connecting rod device, the other end of the connecting rod device is connected with the arm body through a force adjusting device, and when the connecting rod device rotates, the end of the connecting rod device acts to trigger a limiting switch installed on the arm body. The clamping device is installed in the cavity of the arm body and used for clamping a cable arranged in the arm body in a penetrating mode. The device can effectively solve the safety problems of cable snapping, structural deformation, cage outage and the like caused by interference with a building or a scaffold in the cable running process, and the running safety and the operation continuity of the construction hoist are guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of construction hoists, and particularly relates to an anti-cable-snagging arm for construction hoists. Background Technology

[0002] Construction hoists, widely used in the construction engineering field, are primarily used for the interior and exterior decoration of high-rise buildings, bridges, chimneys, and other construction projects. Their cages are typically powered by a traveling cable, with one end fixed to the outside of the cage and moving up and down synchronously with it, while the other end connects to a ground-based power supply box. However, during the cage's movement, the cable is prone to entanglement, jamming, or pulling on buildings or scaffolding, potentially leading to cable breakage, cage structural deformation, and power outages, seriously threatening the operational safety and continuity of the construction hoist. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide an anti-snagging cable arm. This device can effectively solve safety problems such as cable breakage, structural deformation, and power outage of the hoist cage caused by interference between the cable and the building or scaffolding during the operation of the cable, and ensure the safe operation and continuity of the construction hoist.

[0004] The objective of this invention is achieved through the following technical measures: an anti-snagging cable arm, comprising an arm body, a connecting rod device, a cable mesh sleeve, a force adjustment device, a clamping device, and a limit switch. The arm body has a cavity structure; the connecting rod device is hinged to the arm body via a shaft or bolts and can rotate around the hinge point; one end of the connecting rod device is fitted with a cable mesh sleeve, and the other end is connected to the arm body via the force adjustment device; when the connecting rod device rotates, its end movement triggers the limit switch mounted on the arm body; the clamping device is installed within the cavity of the arm body and is used to clamp cables passing through the arm body.

[0005] The power supply cable of the hoist is first fixed by a cable mesh sleeve, then passes through the inner cavity of the boom and connects to the cage. When the cable becomes entangled, caught, or pulled, the cable pulls the connecting rod device to rotate through the cable mesh sleeve, which in turn triggers the limit switch at the other end, causing the cage to stop running immediately. This avoids safety problems such as cable breakage, cage structural deformation, and power outage.

[0006] Furthermore, the arm body has a rectangular cavity structure, with a mounting plate at one end for fixed connection with the cage; guide plates are provided on the upper and lower sides of the arm body to facilitate the smooth passage of the cable through the cable guard; support rods are provided inside the arm body, which not only strengthen the structure but also guide the cable to avoid interference between the cable and the connecting rod device and limit switch.

[0007] Furthermore, the connecting rod device has a rectangular structure with a mounting hole in the middle, a mounting ear plate at one end for mounting a cable mesh sleeve, a recess at the other end for triggering a limit switch, and a bolt mounting hole on one side of the recess for connecting to a force adjustment device.

[0008] Furthermore, the force adjustment device includes a spring, a pressure plate, a screw, and a nut. The spring is fixed to the lower base plate of the boom body by the screw and the pressure plate. The screw passes through the hole in the bottom plate of the boom body and the corresponding mounting hole on the connecting rod device in sequence, and is locked in place by the nut. The compression of the spring can be adjusted by rotating the nut, thereby adjusting the matching relationship between the tension threshold and the rotation angle of the connecting rod device when it is pulled by the cable mesh sleeve.

[0009] Furthermore, the clamping device includes a mounting base, a bolt, and a top block. The bolt passes through the mounting base and is connected to the top block. The mounting base is fixedly installed inside the arm body. By adjusting the bolt, the top block can be driven to clamp the cable inside the arm body, thereby achieving a stable clamping of the cable.

[0010] This invention relates to an anti-snagging cable arm, which has a simple structure and reasonable design. It can monitor the stress state of the cable in real time. When the cable is entangled, caught, or pulled, it can quickly trigger the limit switch to stop the hoist cage. This effectively solves the safety problems caused by interference between the cable and the building or scaffolding during operation, such as cable breakage, structural deformation, and power outage of the hoist cage, thus ensuring the safe operation and continuity of the construction hoist. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the anti-snagging cable arm of the present invention.

[0012] Figure 2 This is a schematic diagram of the arm structure in this invention.

[0013] Figure 3 This is a schematic diagram of the connecting rod device in this invention.

[0014] Figure 4 This is a schematic diagram of the installation of the force adjustment device and the limit switch in this invention.

[0015] Figure 5 This is a schematic diagram of the clamping device installation in this invention.

[0016] Figure 6 This is a schematic diagram of the installation of the present invention on an elevator.

[0017] In the diagram: 1. boom, 2. linkage device, 3. cable mesh sleeve, 4. force adjustment device, 5. limit switch, 6. clamping device, 7. cable, 8. cage; 11. rectangular cavity, 12. mounting plate, 13. guide plate, 14. reinforcing rod; 21. rod body, 22. ear plate, 23. recessed block; 41. screw, 42. pressure plate, 43. spring, 44. nut; 61. mounting base, 62. bolt, 63. top block. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] like Figure 1 As shown, this embodiment of an anti-snagging cable arm includes an arm body 1, a connecting rod device 2, a cable mesh sleeve 3, a force adjustment device 4, a limit switch 5, and a clamping device 6. The connecting rod device 2 is mounted on the arm body 1 via a pin and can rotate freely around the pin; one end of the connecting rod device 2 is fitted with the cable mesh sleeve 3, and the other end is connected to the force adjustment device 4; the limit switch 5 is installed inside the arm body 1, and its trigger head is correspondingly disposed in the recess 23 of the connecting rod device 2; the clamping device 6 is fixedly installed inside the arm body 1.

[0022] like Figure 2 As shown, the main body of the arm 1 is a rectangular cavity 11, with a mounting plate 12 at one end for fixing to the cage; guide plates 13 are provided on the upper and lower sides of the arm 1, and reinforcing rods 14 are provided inside; the rectangular cavity 11 has mounting holes of various specifications for assembling components such as the connecting rod device 2, the force adjustment device 4, and the limit switch 5.

[0023] like Figure 3 As shown, the main body of the linkage device 2 is a rod 21, one end of which is provided with two oppositely arranged ear plates 22 for installing the cable mesh sleeve 3; the other end is provided with a recess 23 for triggering the limit switch 5; the middle of the rod 21 is provided with a mounting hole for hinged connection with the arm 1.

[0024] like Figure 4 As shown, the force adjustment device 4 consists of a screw 41, a pressure plate 42, a spring 43, and a nut 44. The screw 41 passes sequentially through the spring 43, the mounting hole on the arm 1, and the mounting hole on the connecting rod device 2, and is locked in place by the nut 44. By adjusting the nut 44, the initial compression of the spring 43 can be changed, thereby adjusting the tension threshold required to trigger the limit switch 5.

[0025] like Figure 5 As shown, the clamping device 6 consists of a mounting base 61, a bolt 62, and a top block 63. The bolt 62 passes through a threaded hole on the mounting base 61, and its top end is connected to the top block 63. The mounting base 61 is fixed inside the arm body 1. By rotating the bolt 62, the gap between the top block 63 and the top plate of the rectangular cavity 11 can be adjusted, thereby achieving a stable clamping of the cable 7.

[0026] like Figure 6 As shown, in this embodiment, the cable 7 is installed on the outside of the cage 8. It passes through the cable mesh sleeve 3 and the rectangular cavity 11 of the arm body 1 before entering the cage 8. The cable mesh sleeve 3 provides initial fixation. The cable mesh sleeve 3 is a mesh structure woven from steel wire rope, with a length of 300mm-500mm. It evenly and firmly wraps and fixes the cable, becoming tighter under stress. The cable mesh sleeve 3 transmits the force on the cable 7 to the connecting rod device 2. When the cable 7 is entangled, caught, or pulled: if the cage is moving upwards, the tension of the cable 7 will increase and exceed the initial set force of the force adjusting device 4, driving the connecting rod device 2 to rotate counterclockwise around the pin shaft. The concave block 23 at its end triggers the limit switch 5, and the cage stops immediately. If the cage is moving downwards, the cable 7 will pull the left end of the connecting rod device 2 upwards, causing it to rotate clockwise around the pin shaft, which will also trigger the limit switch 5 to stop the cage, thus preventing further damage to the cable 7 and the cage structure.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cable-hanging prevention arm, characterized by: The utility model provides a cable protection frame, including arm body, connecting rod device, cable net cover, force adjusting device, clamping device and limit switch, the arm body is cavity structure, connecting rod device is hinged and fixed on the arm body, and can rotate around the hinge point, the connecting rod device one end is installed with cable net cover, and the other end is connected with the arm body through force adjusting device, and when the connecting rod device rotates, its end action can trigger the limit switch installed on the arm body, the clamping device is installed in the cavity of arm body, is used for clamping the cable line that is arranged in the inside of arm body.

2. The cable-hanging prevention arm according to claim 1, characterized by: The arm body is rectangular cavity structure, one end is equipped with mounting seat board, is used for fixed connection with the cage, and the upper and lower sides of arm body are equipped with guide plate, and the cable line passes through the cable protection frame smoothly, and the inside of arm body is equipped with support rod, and the structure is reinforced at the same time to the cable line and carries out the direction.

3. The cable-hanging prevention arm according to claim 1, characterized by: The connecting rod device is rectangular structure, and the middle part is equipped with mounting hole, and one end is equipped with mounting lug plate, is used for installing cable net cover, and the other end is equipped with recessed block, and the recessed block can trigger limit switch, and one side of recessed block is equipped with bolt mounting hole, is used for connecting with force adjusting device.

4. The cable-hanging arm according to claim 1, characterized in that: The force adjusting device includes spring, pressing plate, screw rod and nut, the spring is fixed on the lower bottom plate of arm body through screw rod and pressing plate, the screw rod passes through the corresponding mounting hole on the bottom plate hole of arm body and connecting rod device in proper order, and is locked and fixed with nut, the compression amount of spring can be adjusted by rotating nut, and then the matching relationship of the tension threshold and rotation angle of connecting rod device when being pulled by cable net cover is adjusted.

5. The cable-hanging arm of claim 1, wherein: The clamping device includes mounting seat, bolt and top block, the bolt passes through mounting seat and is connected with top block, the mounting seat is fixedly installed in the inside of arm body, and the gap between top block and the top plate of arm body cavity can be adjusted by rotating bolt, realizes the steady clamping of cable line.

Images