Safety graduator for hoisting

Abstract

The utility model discloses a hoisting safety protractor which comprises a hollow panel (1), a hook (2) is arranged in the middle of the hollow part of the panel (1), and an over-limit early warning area (3), a warning area (4) and a safety area (5) which are concentric with a hook door of the hook (2) are respectively arranged on two sides of the hook (2) in a mirroring manner. According to the utility model, whether the corresponding hoisting angle exceeds the limit or not can be visually detected on the ground, and the effect of assisting in on-site safety production management can be achieved.

Description

Technical Field

[0001] The utility model relates to a measuring instrument related to lifting equipment, in particular to a lifting safety protractor. Background Art

[0002] According to the relevant specifications of lifting, in order to ensure construction safety, there are limit regulations for the included angle of the wire rope sling when using the threading and sleeving method during lifting and the included angle of the corresponding sling when using a two-leg assembled sling. In actual lifting operations, due to high-altitude work, it is very difficult to accurately measure the lifting angle. The main reason is that lifting operations are all carried out at high altitudes, and it is very difficult for slinging commanders and safety management personnel to actually measure the lifting angle, making it difficult to control the safe lifting angle specified in the regulations. Content of the Utility Model

[0003] The purpose of the utility model is to provide a lifting safety protractor, which can effectively solve the problems existing in the background art.

[0004] To solve the problems existing in the background art, it includes a hollow panel 1. A hook 2 is arranged at the middle position of the hollow part of the panel 1. On both sides of the hook 2, there are mirror-image arranged over-limit warning areas 3, warning areas 4, and safety areas 5 that are concentric with the hook door of the hook 2.

[0005] The included angle between the two over-limit warning areas 3 is 120° - 110°.

[0006] The included angle between the two warning areas 4 is 100° - 110°.

[0007] The included angle between the two safety areas 5 is 90° - 100°.

[0008] Due to the above technical solutions, the utility model has the following beneficial effects: It can directly detect on the ground whether the corresponding lifting angle exceeds the limit, and can play an assistant role in on-site safety production management. Description of the Drawings

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0010] Figure 1 It is a structural schematic diagram of the present utility model. Detailed Embodiment

[0011] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0012] Referring to Figure 1 , this specific embodiment is implemented by adopting the following technical solutions. It includes a hollow panel 1, and a hook 2 is arranged at the middle position of the hollow part of the panel 1. On both sides of the hook 2, there are mirror-image arranged over-limit warning areas 3, warning areas 4 and safety areas 5 that are concentric with the hook door of the hook 2.

[0013] The included angle between the two over-limit warning areas 3 is 110° - 120°.

[0014] The included angle between the two warning areas 4 is 100° - 110°.

[0015] The included angle between the two safety areas 5 is 100° - 110°.

[0016] The following further elaborates on the usage method and its principle of the technical solution part in this specific embodiment in conjunction with the accompanying drawings:

[0017] During use, a certain distance should be maintained from the hook of the hoisting machinery. Then, visually align the hook 2 in the hollow panel 1 with the hook for on-site hoisting. Next, observe which area the hoisting steel cables on both sides of the hook fall into. If the hoisting steel cables fall into the over-limit warning area 3, a work instruction to prohibit hoisting can be issued to the signal worker, and the on-site staff can be ordered to re-adjust the hoisting angle. If it falls within the warning area 4, hoisting can be carried out. This protractor can visually detect whether the corresponding hoisting angle exceeds the limit and can play a role in assisting on-site safety production management.

[0018] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A hoisting safety indexing instrument, characterized in that It comprises a hollow panel (1), a hook (2) is arranged in the middle of the hollow part of the panel (1), and an over-limit warning area (3), a warning area (4) and a safety area (5) are arranged in mirror image on both sides of the hook (2) and are concentric with the hook door of the hook (2).

2. A hoisting safety indexing instrument according to claim 1, characterized in that The angle between the two over-limit warning areas (3) is 110°-120°.

3. A hoisting safety indexing instrument according to claim 1, characterized in that The angle between the two warning areas (4) is 100°-110°.

4. A hoisting safety indexing instrument according to claim 1, characterized in that The angle between the two safety areas (5) is 90°-100°.

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