Novel anti-unhooking device for lifting hook

Abstract

The invention relates to a novel anti-unhooking device for a lifting hook, and belongs to the technical field of tower cranes. Comprising a lifting hook, a pin shaft, a pin, a lifting hook safety lock and an anti-unhooking device, the lifting hook safety lock is connected with the lifting hook through the pin shaft, and the anti-unhooking device is connected with the lifting hook and the lifting hook safety lock through the pin shaft; and the lifting hook safety lock and the anti-unhooking device are limited on the pin shaft through pins. A bolt, a bent plate, a gasket and a nut are also arranged on the lifting hook; and the bending plate is fixed on the anti-unhooking device through a bolt, a gasket and a nut on the two sides. The lifting hook safety lock has the beneficial effect that the anti-falling effect can still be achieved under the condition that the lifting hook safety lock fails. According to the anti-unhooking device for the lifting hook, the safety of the lifting hook in the lifting process is greatly improved, and the anti-unhooking device is simple and labor-saving to operate.

Description

Technical Field

[0001] The invention relates to a novel hook anti-unhooking device, belonging to the technical field of tower cranes. Background Art

[0002] Hoisting machinery plays a vital role in industrial production, but at the same time, due to the complexity and potential danger of its operation, the installation of safety protection devices is particularly important. As an important component of tower crane lifting equipment, the hook is very important to be safe and reliable during use. During the lifting operation, if the hook is unhooked, it will not only damage the hoisted goods, but also cause production accidents, and even endanger the lives of workers in serious cases. Therefore, it is very necessary to equip the hook with an anti-unhooking device.

[0003] The anti-unhooking device is used to prevent the hook from falling off or sliding out during the hoisting process, thereby avoiding the occurrence of load falling accidents. This device can ensure the stability and safety of the load. The current traditional hook anti-unhooking device is a self-weight type hook anti-unhooking device, which mainly uses the principle of lever, in which the shaft pin sleeve on the upper side of the hook safety lock is responsible for rotation, and the round steel on the outside of the hook body is heavier than the round steel on the inside of the hook due to its own weight, pressing up the round steel in the hook body, and the round steel in the hook body plays a role of limiting and tightening. However, the main workplace of the tower crane is in the open outdoors, and the on-site working conditions and wind environment are relatively complex. The risk of falling off and sliding out of the hoisted objects cannot be completely eliminated, so there is still a certain risk of unhooking.

[0004] At present, there is no double-layer insurance anti-unhooking device which can not only ensure that the hook safety lock does not fail, but also can prevent the hook from falling off under the premise that the hook safety lock fails. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a novel hook anti-unhooking device, which can achieve the anti-unhooking effect even when the hook safety lock fails.

[0006] The present invention is achieved through the following technical scheme: a new type of hook anti-unhooking device, including a hook, a pin shaft, a pin, a hook safety lock and an anti-unhooking device, the hook safety lock is connected to the hook through the pin shaft, and the anti-unhooking device is connected to the hook and the hook safety lock through the pin shaft; the hook safety lock and the anti-unhooking device are limited on the pin shaft by the pin.

[0007] The hook is also provided with bolts, a bending plate, a washer and a nut; the bending plate is fixed on the anti-unhooking device through bolts, washers and nuts on both sides.

[0008] The bending portion of the bending plate is arranged on the inner side of the hook.

[0009] There are two groups of bolts, nuts and washers, which are respectively placed on both sides of the anti-unhooking device.

[0010] A bending groove is provided on the top of the anti-unhooking device, and pin shaft connecting openings connected to the pin shaft are provided at both ends of the bending groove. The pin shaft passes through the pin shaft connecting opening to limit the anti-unhooking device on the hook.

[0011] The beneficial effect of the present invention is that the hook anti-dropping function can still be achieved when the hook safety lock fails. The hook anti-dropping device greatly improves the safety of the hook during the lifting process, and the device is simple and labor-saving to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a perspective view of the present invention.

[0014] In the figure: 1. hook; 2. pin shaft; 3. pin; 4. hook safety lock; 5. anti-unhooking device; 6. bolt; 7. bending plate. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] like Figure 1 A new type of hook anti-unhooking device shown in the figure includes a hook 1, a pin shaft 2, a pin 3, a hook safety lock 4 and an anti-unhooking device 5, wherein the hook safety lock 4 is connected to the hook 1 through the pin shaft 2, and the anti-unhooking device 5 is connected to the hook 1 and the hook safety lock 4 through the pin shaft 2; the hook safety lock 4 and the anti-unhooking device 5 are limited on the pin shaft 2 by the pin 3.

[0018] The hook 1 is also provided with bolts 6, a bending plate 7, washers and nuts; the bending plate 7 is fixed to the anti-unhooking device 5 by bolts 6, washers and nuts on both sides.

[0019] The bending portion of the bending plate 7 is arranged on the inner side of the hook 1 .

[0020] The bolts 6 , nuts and washers are provided in two groups, which are respectively placed on both sides of the anti-unhooking device 5 .

[0021] The top of the anti-unhooking device 5 is provided with a bending groove, and both ends of the bending groove are provided with pin connection ports connected to the pin 2. The pin 2 passes through the pin connection ports to limit the anti-unhooking device 5 on the hook 1.

[0022] The anti-unhooking device can prevent the hook safety lock from falling off, and can also prevent the hook from falling off when the hook safety lock fails. The anti-unhooking device greatly improves the safety of the hook during the hoisting process, and the operation of the device is simple and labor-saving.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of hook anti-unhooking device, characterized in that: The invention comprises a hook (1), a pin shaft (2), a pin (3), a hook safety lock (4) and an anti-hooking device (5), wherein the hook safety lock (4) is connected to the hook (1) via the pin shaft (2), and the anti-hooking device (5) is connected to the hook (1) and the hook safety lock (4) via the pin shaft (2); the hook safety lock (4) and the anti-hooking device (5) are limited on the pin shaft (2) via the pin (3).

2. A novel hook anti-unhooking device according to claim 1, characterized in that: The hook (1) is also provided with bolts (6), a bending plate (7), washers and nuts; the bending plate (7) is fixed to the anti-unhooking device (5) via bolts (6), washers and nuts on both sides.

3. A novel hook anti-unhooking device according to claim 2, characterized in that: The bent portion of the bent plate (7) is arranged on the inner side of the hook (1).

4. A novel hook anti-unhooking device according to claim 2, characterized in that: There are two groups of bolts (6), nuts and washers, which are respectively placed on both sides of the anti-unhooking device (5).

5. The novel hook anti-unhooking device according to claim 1 is characterized in that: The anti-unhooking device (5) is provided with a bending groove at the top, and pin connection openings connected to the pin (2) are provided at both ends of the bending groove. The pin (2) passes through the pin connection openings to limit the anti-unhooking device (5) on the hook (1).

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