Tower crane cable anti-falling device

Abstract

The utility model relates to the technical field of tower cranes, and discloses a tower crane cable anti-dropping device, a bottom limiting device is composed of a fixing box, a fixing rod, a second spring, a sliding block, a connecting rod and a limiting plate, the fixing box is fixedly installed inside two supporting side plates, the fixing rod is fixedly installed inside the fixing box, and the second spring is fixedly installed inside the sliding block. The second spring is connected to the surface of the fixing rod in a sleeving mode, and the sliding block is installed on the surface of the fixing rod in a sliding mode. According to the tower crane cable anti-falling device, the sliding rod drives the fixing disc to move and stretches the first spring, under the action of the first spring, the acting force of the cable in the horizontal direction can be offset, the sliding block is driven by the connecting rod to move on the surface of the fixing rod, the second spring can be stretched, and under the action of the second spring, the cable is prevented from falling off. The acting force of the cable in the vertical direction can be counteracted, then the cable is effectively prevented from being separated from the pulley, and the effect of buffering swing of the cable is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tower cranes, in particular to a cable anti - detachment device for a tower crane. Background Technique

[0002] The tower crane is one of the most commonly used lifting equipment on construction sites, also known as a tower crane, which is extended (heightened) section by section (abbreviated as "standard section"), and is used to lift construction raw materials such as steel bars, wooden beams, concrete, steel pipes, etc. The tower crane is also an essential lifting equipment on the construction site.

[0003] At the construction site, as a key large - scale lifting equipment, the safety and stability of the operation of the tower crane are directly related to the safety and progress of the entire project. The wire rope of the traveling pulley, as an important part of the transmission system of the tower crane, its working state directly affects the safety and efficiency of the lifting operation. When the traveling crane changes speed, abnormal behaviors of the wire rope at the cut - in point of the pulley, such as irregular jumping, deflection, etc., are not only a kind of loss to the equipment itself, but also pose a serious threat to the safety of the construction site. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cable anti - detachment device for a tower crane to solve the problems raised in the above - mentioned background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A cable anti - detachment device for a tower crane, including support side plates, a hook, a shaft rod, a pulley, a side limiting device, and a bottom limiting device. The hook is arranged inside two support side plates, the shaft rod is fixedly installed inside two support side plates, the pulley is rotatably installed on the surface of the shaft rod, the side limiting device is arranged on the side of the support side plate, and the bottom limiting device is arranged inside two support side plates.

[0006] The side limiting device consists of a sliding rod, a first spring, a limiting disc, and a fixed disc. The sliding rod is slidably installed on the side of the support side plate, the first spring is sleeved on the surface of the sliding rod, the limiting disc is fixedly installed at one end of the sliding rod, and the fixed disc is fixedly installed at the other end of the sliding rod.

[0007] The bottom limiting device consists of a fixed box, a fixed rod, a second spring, a slider, a connecting rod, and a limiting plate. The fixed box is fixedly installed inside two support side plates, the fixed rod is fixedly installed inside the fixed box, the second spring is sleeved on the surface of the fixed rod, the slider is slidably installed on the surface of the fixed rod, one end of the connecting rod is hinged to the top of the slider, and the limiting plate is hinged to the other end of the connecting rod.

[0008] Preferably, one end of the first spring is fixedly connected to the support side plate, and the other end of the first spring is fixedly connected to the fixed disk. The first spring is provided to reset the fixed disk.

[0009] Preferably, one slide bar and one first spring form a group, and they are distributed in a circular array between the limit disk and the fixed disk. Multiple groups of such components are provided to better reset the fixed disk.

[0010] Preferably, two sets of side limiting devices are provided and symmetrically arranged on both sides of the pulley. The two sets of side limiting devices can play a role in laterally limiting the deviated cable, and can also play a role in lateral buffering of the deviated cable.

[0011] Preferably, one end of the second spring is fixedly connected to the fixed box, and the other end of the second spring is fixedly connected to the slider. The second spring is provided to reset the slider.

[0012] Preferably, the limiting plate is arranged between the two limit disks. The limiting plate can play a role in bottom limiting of the deviated cable, and can also play a role in bottom buffering of the deviated cable.

[0013] Preferably, one second spring, one slider and one connecting rod form a group, and there are two groups symmetrically arranged on the surface of the fixed rod. The two groups of such components can reset the limiting plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The cable anti - detachment device of the tower crane drives the fixed disk to move and stretch the first spring through the slide bar. Under the action of the first spring, the acting force of the cable in the horizontal direction can be offset. The slider is driven by the connecting rod to move on the surface of the fixed rod, and the second spring can be stretched. Under the action of the second spring, the acting force of the cable in the vertical direction can be offset, thereby effectively preventing the cable from detaching from the pulley and achieving the effect of buffering the swing of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the internal structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the slide bar, the first spring and the limit disk structure of the present utility model;

[0018] Figure 4 is a schematic diagram of the fixed box, the fixed rod and the second spring structure of the present utility model.

[0019] In the figure: 1, support side plate; 2, hook; 3, shaft rod; 4, pulley; 5, side limiting device; 501, sliding rod; 502, first spring; 503, limiting disc; 504, fixed disc; 6, bottom limiting device; 601, fixed box; 602, fixed rod; 603, second spring; 604, slider; 605, connecting rod; 606, limiting plate. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-4 , the present invention provides a technical solution: a cable anti - detachment device for a tower crane, including a support side plate 1, a hook 2, a shaft rod 3, a pulley 4, a side limiting device 5, and a bottom limiting device 6. The hook 2 is arranged inside two support side plates 1. The shaft rod 3 is fixedly installed inside two support side plates 1. The pulley 4 is rotatably installed on the surface of the shaft rod 3. The side limiting device 5 is arranged on the side of the support side plate 1. There are two groups of side limiting devices 5, symmetrically arranged on both sides of the pulley 4. Setting two groups of side limiting devices 5 can play a role in side limiting for the deviated cable, and can also play a role in side buffering for the deviated cable. The bottom limiting device 6 is arranged inside two support side plates 1.

[0022] The side limiting device 5 is composed of a sliding rod 501, a first spring 502, a limiting disc 503, and a fixed disc 504. The sliding rod 501 is slidably installed on the side of the support side plate 1. The first spring 502 is sleeved on the surface of the sliding rod 501. The limiting disc 503 is fixedly installed at one end of the sliding rod 501. The fixed disc 504 is fixedly installed at the other end of the sliding rod 501. One end of the first spring 502 is fixedly connected to the support side plate 1, and the other end of the first spring 502 is fixedly connected to the fixed disc 504. The first spring 502 is provided for resetting the fixed disc 504. The sliding rod 501 and the first spring 502 are one set each, and are distributed in a circular array between the limiting disc 503 and the fixed disc 504. Setting multiple groups of this component can better reset the fixed disc 504.

[0023] The bottom limit device 6 is composed of a fixed box 601, a fixed rod 602, a second spring 603, a slider 604, a connecting rod 605, and a limit plate 606. The fixed box 601 is fixedly installed inside the two support side plates 1. The fixed rod 602 is fixedly installed inside the fixed box 601. The second spring 603 is sleeved on the surface of the fixed rod 602. The slider 604 is slidably installed on the surface of the fixed rod 602. One end of the second spring 603 is fixedly connected to the fixed box 601, and the other end of the second spring 603 is fixedly connected to the slider 604. The second spring 603 is provided to reset the slider 604. One end of the connecting rod 605 is hinged to the top of the slider 604. The second spring 603, the slider 604, and the connecting rod 605 are each in a group, and there are two groups symmetrically arranged on the surface of the fixed rod 602. The provision of two groups of this component can reset the limit plate 606. The limit plate 606 is hinged to the other end of the connecting rod 605. The limit plate 606 is arranged between the two limit discs 503. The provision of the limit plate 606 can play a role in bottom limiting for the deviated cable and can also play a role in bottom buffering for the deviated cable.

[0024] When in use, when the pulley 4 swings with a large amplitude, the cable on the surface of the pulley 4 will apply an external force to the two limit discs 503 on both sides and the bottom limit plate 606 under the action of inertia. The sliding rod 501 drives the fixed disc 504 to move and stretch the first spring 502. Under the action of the first spring 502, the acting force of the cable in the horizontal direction can be offset. The connecting rod 605 drives the slider 604 to move on the surface of the fixed rod 602, and the second spring 603 can be stretched. Under the action of the second spring 603, the acting force of the cable in the vertical direction can be offset, thereby effectively preventing the cable from detaching from the pulley 4 and achieving the effect of buffering the swing of the cable.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising", or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or device. Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A cable anti - detachment device for a tower crane, comprising a support side plate (1), a hook (2), a shaft rod (3), a pulley (4), a side limit device (5), and a bottom limit device (6), characterized in that: The hook (2) is arranged inside the two support side plates (1), the shaft rod (3) is fixedly installed inside the two support side plates (1), the pulley (4) is rotatably installed on the surface of the shaft rod (3), the side limiting device (5) is arranged on the side of the support side plate (1), and the bottom limiting device (6) is arranged inside the two support side plates (1); The side limiting device (5) is composed of a slide rod (501), a first spring (502), a limiting disc (503), and a fixed disc (504). The slide rod (501) is slidably installed on the side of the support side plate (1), the first spring (502) is sleeved on the surface of the slide rod (501), the limiting disc (503) is fixedly installed at one end of the slide rod (501), and the fixed disc (504) is fixedly installed at the other end of the slide rod (501); The bottom limiting device (6) is composed of a fixed box (601), a fixed rod (602), a second spring (603), a slider (604), a connecting rod (605), and a limiting plate (606). The fixed box (601) is fixedly installed inside the two support side plates (1), the fixed rod (602) is fixedly installed inside the fixed box (601), the second spring (603) is sleeved on the surface of the fixed rod (602), the slider (604) is slidably installed on the surface of the fixed rod (602), one end of the connecting rod (605) is hinged to the top of the slider (604), and the limiting plate (606) is hinged to the other end of the connecting rod (605).

2. The anti - detachment device for the cable of a tower crane according to claim 1, wherein: One end of the first spring (502) is fixedly connected to the support side plate (1), and the other end of the first spring (502) is fixedly connected to the fixed disc (504).

3. The anti - detachment device for the cable of a tower crane according to claim 1, wherein: The slide rod (501) and the first spring (502) are each in a group and are distributed in a circumferential array between the limiting disc (503) and the fixed disc (504).

4. A cable anti - detachment device for a tower crane according to claim 1, characterized in that: Two groups of the side limiting devices (5) are provided and are symmetrically arranged on both sides of the pulley (4).

5. The anti - detachment device for the cable of a tower crane according to claim 1, characterized in that: One end of the second spring (603) is fixedly connected to the fixed box (601), and the other end of the second spring (603) is fixedly connected to the slider (604).

6. The anti - detachment device for the cable of a tower crane according to claim 1, characterized in that: The limiting plate (606) is arranged between the two limiting discs (503).

7. A cable anti - detachment device for a tower crane according to claim 1, characterized in that: The second spring (603), the slider (604), and the connecting rod (605) are each in a group, and there are two groups symmetrically arranged on the surface of the fixed rod (602).

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