Unhooking prevention device for crane

Abstract

The utility model discloses an anti-unhooking device for a crane, which comprises a lifting hook, a pin hole is fixedly arranged on one side of the lifting hook, an anti-unhooking pin shaft is rotatably connected inside the pin hole, a hook bolt is fixedly arranged on the other side of the lifting hook, a hook hole is arranged in the middle of the hook bolt, and a hook is arranged inside the hook hole. The anti-unhooking device comprises an anti-unhooking pin shaft, an anti-unhooking handrail is installed at one end between the anti-unhooking pin shaft, an anti-unhooking tongue is installed at the joint of the anti-unhooking handrail and the anti-unhooking pin shaft, an assembly rod is fixedly installed at the top end of a lifting hook, and a protection mechanism is fixedly installed in the middle of the assembly rod. The anti-unhooking device is very practical when a hook is used for installing a clamp, the clamp can be taken off as long as the anti-unhooking handrail is hung on the hook when the clamp is disassembled, and the problem that an original anti-unhooking device needs a person to hold an anti-unhooking tongue all the time is avoided, so that the problem that the person is hurt in the clamp taking-off process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to an anti-unhooking device for a crane. Background Art

[0002] Crane is one of the indispensable equipment in industrial production, and safety is one of its most important advantages. Compared with manual handling, crane operation is safe, highly controllable, and protects the health and life safety of workers. At the same time, the application of some advanced technologies, such as intelligent monitoring systems, automatic anti-hold systems, etc., can better ensure the safety of equipment and ensure the stability of production. During the use of the crane, it is necessary to use an anti-slip device to install the hook to avoid immeasurable economic losses caused by the shaking of the hook.

[0003] However, the traditional anti-slip device has the following disadvantages:

[0004] The anti-unhooking hook used in the crane hook is a traditional spring iron sheet anti-unhooking hook. The original traditional anti-unhooking hook often has problems with spring failure and iron sheet deformation during use, resulting in the anti-unhooking hook having no anti-unhooking effect. In addition, during use, the anti-unhooking hook needs to be manually supported and unhooked, which poses a great safety hazard to people. Utility Model Content

[0005] The utility model aims to provide an anti-unhooking device for cranes, so as to solve the problem that the anti-unhooking hook used for the crane hook in the above-mentioned background technology is a traditional spring iron sheet anti-unhooking hook, and the original traditional anti-unhooking hook often has spring failure and iron sheet deformation problems during use, resulting in the anti-unhooking hook having no anti-unhooking effect, and in use, it is necessary to manually support the anti-unhooking hook and unhook, which poses a great safety hazard to people.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-unhooking device for a crane, comprising a hook, a pin hole fixedly installed on one side of the hook, an anti-unhooking pin shaft is rotatably connected inside the pin hole, a hook bolt is fixedly installed on the other side of the hook, a hook hole is opened in the middle of the hook bolt, a hook is installed inside the hook hole, an anti-unhooking handrail is installed at one end between the anti-unhooking pin shafts, an anti-unhooking tongue is installed at the connection between the anti-unhooking handrail and the anti-unhooking pin shaft, an assembling rod is fixedly installed on the top of the hook, and a protective mechanism is fixedly installed in the middle of the assembling rod.

[0007] Preferably, the protection mechanism includes a linear track and a length rod. A sliding block is slidably connected to the bottom end of the linear track. The bottom end of the sliding block is fixedly connected to the top end of the length rod. A connecting block is fixedly installed at the bottom end of the length rod. A protective shell is fixedly installed on one side of the connecting block. A protective member is fixedly installed at the bottom end of the protective shell. The sliding block slides along the linear track. During the sliding process of the sliding block, the position of the protective shell is adjusted through the length rod and the connecting block, and the protective shell protects from the outside of the hook.

[0008] Preferably, the middle part of the linear track is fixedly connected to an assembly rod, and the protection mechanism is installed on the assembly rod through the linear track.

[0009] Preferably, the protective member includes two vertical shells and a protective bottom plate. The two sides of the top end of the protective bottom plate are respectively fixedly connected to the bottom ends of the two vertical shells. Activity grooves are respectively opened at the top ends of the two vertical shells. Shock-absorbing springs are fixedly installed at the bottom ends of the inner walls of the two activity grooves. The top ends of the two shock-absorbing springs are fixedly installed with height rods slidably connected to the activity grooves. A shock absorber is fixedly installed in the middle of the top end of the protective bottom plate. The height rod slides relative to the vertical shell, and the height rod presses the shock-absorbing spring. The shock-absorbing spring has elasticity, and the shock-absorbing spring undergoes elastic deformation to buffer the extrusion force, and the shock absorber buffers the elastic deformation force of the shock-absorbing spring.

[0010] Preferably, the end of the shock absorber away from the protective bottom plate is fixedly connected to the middle of the bottom end of the protective shell. The top ends of the two height rods are fixedly connected to the side of the protective shell facing each other. The protective member is installed on the protective shell through the shock absorber and the height rod.

[0011] Preferably, silicone sleeves are sleeved on the surfaces of the anti-disengagement hook tongue and the anti-disengagement hook handrail. The silicone sleeves are made of silicone material, reducing the friction of the anti-disengagement hook tongue and the anti-disengagement hook handrail on the hook itself.

[0012] Preferably, both the anti-disengagement hook tongue and the anti-disengagement hook handrail are made of diamond material.

[0013] Compared with the prior art, the beneficial effect of the present utility model is that this anti-disengagement device is very practical in the hook installation fixture. When disassembling the fixture, as long as the anti-disengagement hook handrail is hung on the hook, the fixture removal operation can be carried out, avoiding the need for personnel to always hold the anti-disengagement hook tongue in the original anti-disengagement device, thus avoiding the problem of personal injury during the fixture removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a partial schematic diagram of the present utility model;

[0015] Figure 2 is a side view of the present utility model;

[0016] Figure 3 Side view of the protection mechanism of the present utility model;

[0017] Figure 4 Cross-sectional view of the protective part of the present utility model.

[0018] In the figure: 1, hook; 2, pin hole; 3, anti-disengagement hook tongue; 4, anti-disengagement hook handrail; 5, hook; 6, hook hole; 7, hook bolt; 8, anti-disengagement hook pin; 9, assembly rod; 10, protection mechanism; 101, linear track; 102, sliding block; 103, length rod; 104, connecting block; 105, protective shell; 106, protective part; 1061, height rod; 1062, protective bottom plate; 1063, shock-absorbing spring; 1064, shock absorber; 1065, movable groove; 1066, vertical shell; 11, silica gel sleeve. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0020] Please refer to Figures 1-4 , the present utility model provides an anti-disengagement hook device for a crane, including a hook 1, a pin hole 2 is fixedly installed on one side of the hook 1, an anti-disengagement hook pin 8 is rotatably connected inside the pin hole 2, a hook bolt 7 is fixedly installed on the other side of the hook 1, a hook hole 6 is opened in the middle of the hook bolt 7, a hook 5 is installed inside the hook hole 6, an anti-disengagement hook handrail 4 is installed at one end between the anti-disengagement hook pins 8, an anti-disengagement hook tongue 3 is installed at the connection between the anti-disengagement hook handrail 4 and the anti-disengagement hook pin 8, an assembly rod 9 is fixedly installed at the top end of the hook 1, and a protection mechanism 10 is fixedly installed in the middle of the assembly rod 9.

[0021] The protection mechanism 10 includes a linear track 101 and a length rod 103. A sliding block 102 is slidably connected to the bottom end of the linear track 101. The bottom end of the sliding block 102 is fixedly connected to the top end of the length rod 103. The bottom end of the length rod 103 is fixedly installed with a connecting block 104. A protective shell 105 is fixedly installed on one side of the connecting block 104. A protective part 106 is fixedly installed at the bottom end of the protective shell 105. The sliding block 102 slides along the linear track 101. During the sliding process of the sliding block 102, the position of the protective shell 105 is adjusted through the length rod 103 and the connecting block 104, and the protective shell 105 protects from the outside of the hook 1.

[0022] The middle part of the linear track 101 is fixedly connected to the assembly rod 9, and the protection mechanism 10 is installed on the assembly rod 9 through the linear track 101.

[0023] The protective member 106 includes two vertical shells 1066 and a protective bottom plate 1062. The two sides of the top end of the protective bottom plate 1062 are respectively fixedly connected to the bottom ends of the two vertical shells 1066. Activity grooves 1065 are provided at the top ends of the two vertical shells 1066. Shock-absorbing springs 1063 are fixedly installed at the bottom ends of the inner walls of the two activity grooves 1065. The top ends of the two shock-absorbing springs 1063 are fixedly installed with height rods 1061 that are slidably connected to the activity grooves 1065. A shock absorber 1064 is fixedly installed in the middle of the top end of the protective bottom plate 1062. The height rod 1061 slides relative to the vertical shell 1066, and the height rod 1061 presses the shock-absorbing spring 1063. The shock-absorbing spring 1063 has elasticity. The shock-absorbing spring 1063 undergoes elastic deformation to buffer the extrusion force, and the shock absorber 1064 buffers the elastic deformation force of the shock-absorbing spring 1063.

[0024] One end of the shock absorber 1064 away from the protective bottom plate 1062 is fixedly connected to the middle of the bottom end of the protective shell 105. The top ends of the two height rods 1061 are fixedly connected to the opposite side of the protective shell 105. The protective member 106 is installed on the protective shell 105 through the shock absorber 1064 and the height rods 1061.

[0025] Silicone sleeves 11 are sleeved on the surfaces of the anti-disengagement tongue 3 and the anti-disengagement handrail 4. The silicone sleeves 11 are made of silicone material to reduce the friction of the anti-disengagement tongue 3 and the anti-disengagement handrail 4 on the hook 1 itself.

[0026] Both the anti-disengagement tongue 3 and the anti-disengagement handrail 4 are made of diamond material.

[0027] When the embodiment of the present application is in use: The lever principle is applied as the anti-disengagement force to achieve the anti-disengagement effect. First, the anti-disengagement tongue 3 adopts a U-shaped structure and is welded to the bottom steel pipe as a whole. At the same time, a U-shaped anti-disengagement handrail 4 is added outside the hook 1, which is also welded to the bottom steel pipe as a whole. The anti-disengagement handrail 4 and the anti-disengagement tongue 3 form a certain angle, and the structure of the anti-disengagement handrail 4 is larger than that of the anti-disengagement tongue 3. In this way, rotation can be achieved through the anti-disengagement pin shaft 8. Since the anti-disengagement handrail 4 is heavy, in the natural state, the anti-disengagement handrail 4 tightly fits the anti-disengagement tongue 3 on the inner wall of the hook 1 through the lever principle to prevent unhooking. When hooking the hook 5, after the rope enters the inside of the hook 1, the anti-disengagement device will naturally return to its original position. When unclamping the fixture, it is necessary to lift the anti-disengagement handrail 4, hook the hook 5 on the anti-disengagement handrail 4, and after unclamping the fixture, put down the anti-disengagement handrail 4 to be used normally.

[0028] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A crane anti-unhooking device, comprising a hook (1), characterized in that: A pin hole (2) is fixedly installed on one side of the hook (1), and an anti-hook pin shaft (8) is rotatably connected inside the pin hole (2). A hook bolt (7) is fixedly installed on the other side of the hook (1). A hook hole (6) is opened in the middle of the hook bolt (7), and a hook (5) is installed inside the hook hole (6). An anti-hook handrail (4) is installed at one end between the anti-hook pin shaft (8), and an anti-hook tongue (3) is installed at the connection between the anti-hook handrail (4) and the anti-hook pin shaft (8). An assembly rod (9) is fixedly installed on the top of the hook (1), and a protection mechanism (10) is fixedly installed in the middle of the assembly rod (9).

2. The anti-unhooking device for a crane according to claim 1, characterized in that: The protection mechanism (10) comprises a linear track (101) and a length rod (103); the bottom end of the linear track (101) is slidably connected to a sliding block (102); the bottom end of the sliding block (102) is fixedly connected to the top end of the length rod (103); a connecting block (104) is fixedly installed at the bottom end of the length rod (103); a protective shell (105) is fixedly installed on one side of the connecting block (104); and a protective member (106) is fixedly installed at the bottom end of the protective shell (105).

3. The anti-unhooking device for a crane according to claim 2, characterized in that: The middle portion of the linear track (101) is fixedly connected to the assembly rod (9).

4. The anti-unhooking device for a crane according to claim 2, characterized in that: The protective member (106) comprises two vertical shells (1066) and a protective bottom plate (1062). The two sides of the top of the protective bottom plate (1062) are respectively fixedly connected to the bottom ends of the two vertical shells (1066). The tops of the two vertical shells (1066) are each provided with a movable groove (1065). The bottom ends of the inner walls of the two movable grooves (1065) are each fixedly installed with a shock absorbing spring (1063). The tops of the two shock absorbing springs (1063) are each fixedly installed with a height rod (1061) slidably connected to the movable groove (1065). A shock absorber (1064) is fixedly installed in the middle of the top of the protective bottom plate (1062).

5. The anti-unhooking device for a crane according to claim 4, characterized in that: One end of the shock absorber (1064) away from the protective bottom plate (1062) is fixedly connected to the middle of the bottom end of the protective shell (105), and the top ends of the two height rods (1061) are fixedly connected to the side directly opposite to the protective shell (105).

6. The anti-unhooking device for a crane according to claim 1, characterized in that: The surface of the anti-unhooking tongue (3) and the surface of the anti-unhooking handrail (4) are both covered with a silicone sleeve (11).

7. The anti-unhooking device for a crane according to claim 1, characterized in that: The anti-unhooking tongue (3) and the anti-unhooking handrail (4) are both made of diamond material.

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