Anti-falling protection device for crane hook

Abstract

The utility model discloses a travelling crane hook anti-falling protection device which comprises a hook, the surface of the hook is fixedly connected with a connecting column, the outer wall of the connecting column is inserted into the inner wall of a sleeve, an anti-falling mechanism is arranged outside the hook, and the anti-falling mechanism comprises a rubber sleeve arranged outside the hook, and an anti-falling protective sleeve arranged outside the rubber sleeve. The threaded holes are formed in the inner wall of the hook and the inner wall of the curved column respectively. The utility model relates to the technical field of travelling cranes, in particular to an anti-falling protection device for a travelling crane hook, which improves the anti-falling protection characteristic of the existing hook through the matching among a rubber pad, a turn button, a threaded column, a threaded hole and a curved column, and solves the problem that the elasticity of a spring in the existing hook is gradually weakened after the spring is used for a long time, so that the safety of the hook is influenced. And if an object shakes, a rope on the object may slide down from the hook, so that the problem that the anti-falling protection characteristic of the existing hook is reduced is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to an anti - falling protection device for a crane hook. Background Technique

[0002] A crane, commonly known as a hoist, overhead crane, gantry crane, etc. by people, is basically the same as what we call a crane. When using a crane, an object needs to be lifted and moved by a hook.

[0003] When the existing hook is in use, a rope on an object is limited inside the hook through a spring and a limit stop rod to prevent the object from falling off and to protect the object.

[0004] However, after the spring inside the existing hook is used for a long time, the elasticity of the spring will gradually weaken. At this time, the elastic force of the spring is not enough to fix the position of the limit stop rod. If the object shakes, the rope on the object may slip off the hook, thus reducing the anti - falling protection characteristics of the existing hook. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an anti - falling protection device for a crane hook, which solves the problem that after the spring inside the existing hook is used for a long time, the elasticity of the spring will gradually weaken. At this time, if the object shakes, the rope on the object may slip off the hook, thus reducing the anti - falling protection characteristics of the existing hook.

[0006] To achieve the above object, the utility model is realized through the following technical solutions: an anti - falling protection device for a crane hook, including a hook, a connecting column is fixedly connected to the surface of the hook, the outer wall of the connecting column is inserted into the inner wall of a sleeve, an anti - detachment mechanism is arranged outside the hook, and the anti - detachment mechanism includes: a rubber sleeve arranged outside the hook; threaded holes respectively opened in the inner wall of the hook and the inner wall of a curved column; a knob fixedly connected to the inner wall of the rubber sleeve; a threaded column fixedly connected to the surface of the knob and threadedly connected to the inner wall of the threaded hole; a curved column penetrating through the inner wall of the hook and movably connected to the hook; a limiting component arranged inside the hook; wherein, when the threaded column is driven by the knob, it rotates into the threaded hole to fix the end of the curved column to the inner wall of the hook to protect the object from falling off, and the curved column is limited by the limiting component.

[0007] Preferably, the limiting component includes: a connecting block fixedly connected to the outer wall of the curved column; a sliding groove opened on the inner wall of the hook; a roller fixedly connected to the surface of the connecting block and fitted to the inner wall of the sliding groove; wherein, the curved column is limited by the rotation of the roller in the sliding groove.

[0008] Preferably, a reinforcing rib is fixedly connected between the connecting column and the hook.

[0009] Preferably, connecting plates are fixedly connected to both sides of the sleeve, and through grooves are opened on the inner walls of the two connecting plates.

[0010] Preferably, bolts penetrate through the inner walls of the connecting plate and the sleeve, and nuts are threadedly connected to the outer walls of the bolts.

[0011] The utility model has the following beneficial effects: in the anti-dropping protection device for the traveling crane hook, through the cooperation among the rubber pad, the rotary knob, the threaded column, the threaded hole and the curved column, the anti-dropping protection property of the existing hook is improved, and the problem that after the spring inside the existing hook is used for a long time, the elasticity of the spring gradually weakens, and at this time, when the object shakes, the rope on the object may slide off the hook, thus reducing the anti-dropping protection property of the existing hook is solved.

[0012] Through the cooperation among the connecting block, the roller and the sliding groove, the limiting of the curved column is realized, and the problem that when the curved column moves, due to the certain gap between the curved column and the hook, the curved column shakes during movement is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the utility model;

[0014] Figure 2 is Figure 1 the external appearance schematic diagram of

[0015] Figure 3 is Figure 1 the structural schematic diagram of the hook, the threaded column and the curved column in

[0016] Figure 4 is Figure 1 the structural schematic diagram of the connecting block, the curved column and the hook in

[0017] In the figure: 1, hook; 2, connecting column; 21, reinforcing rib; 3, sleeve; 4, connecting plate; 41, through groove; 5, bolt; 51, nut; 6, anti-dropping mechanism; 61, rubber sleeve; 62, rotary knob; 63, threaded column; 64, threaded hole; 65, curved column; 66, limiting component; 661, connecting block; 662, roller; 663, sliding groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] After the spring inside the existing hook has been used for a long time, the elasticity of the spring will gradually weaken. At this time, if the object shakes, the rope on the object may slip off the hook, thereby reducing the anti-detachment protection characteristic of the existing hook.

[0020] In view of this, the present invention provides an anti-detachment protection device for a vehicle hook. Through the cooperation among a rubber pad, a rotary knob, a threaded column, a threaded hole and a curved column, the anti-detachment protection characteristic of the existing hook is improved, and the problem that after the spring inside the existing hook has been used for a long time, the elasticity of the spring will gradually weaken, and at this time, if the object shakes, the rope on the object may slip off the hook, thereby reducing the anti-detachment protection characteristic of the existing hook is solved.

[0021] Those skilled in the art shall connect the components in this case in sequence. For the specific connection and operation sequence, reference should be made to the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process.

[0022] Embodiment 1 consists of Figures 1-4It can be seen that a safety device for preventing the falling off of a driving hook in this case includes a hook 1. A connecting column 2 is fixedly connected to the surface of the hook 1. The outer wall of the connecting column 2 is inserted into the inner wall of a sleeve 3. The staff moves the hook 1, and the hook 1 drives the connecting column 2 to move. The connecting column 2 is inserted into the inside of the sleeve 3 to fix the hook 1. An anti-detachment mechanism 6 is arranged outside the hook 1. The anti-detachment mechanism 6 includes: a rubber sleeve 61 arranged outside the hook 1; threaded holes 64 respectively opened on the inner wall of the hook 1 and the inner wall of a curved column 65; a knob 62 fixedly connected to the inner wall of the rubber sleeve 61. The rubber sleeve 61 drives the knob 62 to rotate. The rubber sleeve 61 increases the friction of the knob 62 to avoid slipping. A threaded column 63 is fixedly connected to the surface of the knob 62. The knob 62 drives the threaded column 63 to rotate and is threadedly connected to the inner wall of the threaded hole 64. The threaded column 63 sequentially rotates into the threaded holes 64 of the curved column 65 and the threaded hole 64 on the inner wall of the hook 1 to fix the curved column 65. The curved column 65 penetrates the inner wall of the hook 1 and is movably connected to the hook 1. The curved column 65 is located above the hook 1, so that the opening above the right end of the hook 1 is in an open state. The staff puts the rope on the object into the inside of the hook 1. After that, the staff moves the curved column 65 and inserts the bottom of the curved column 65 into the hook 1. A limiting component 66 is arranged inside the hook 1. Among them, when the threaded column 63 is driven by the knob 62, it rotates into the threaded hole 64 to fix the end of the curved column 65 to the inner wall of the hook 1, providing anti-detachment protection for the object, and the limiting component 66 limits the curved column 65;

[0023] In the specific implementation process, it is particularly worth noting that the staff moves the hook 1, and the hook 1 drives the connecting column 2 to move. The connecting column 2 is inserted into the inside of the sleeve 3 to fix the hook 1. First, the curved column 65 is located above the hook 1, so that the opening above the right end of the hook 1 is in an open state. The staff puts the rope on the object into the inside of the hook 1. After that, the staff moves the curved column 65 and inserts the bottom of the curved column 65 into the hook 1. As Figure 1 shown, after that, the staff rotates the rubber sleeve 61. The rubber sleeve 61 drives the knob 62 to rotate. The rubber sleeve 61 increases the friction of the knob 62 to avoid slipping. The knob 62 drives the threaded column 63 to rotate. The threaded column 63 sequentially rotates into the threaded holes 64 of the curved column 65 and the threaded hole 64 on the inner wall of the hook 1 to fix the curved column 65, realizing the prevention of the rope on the object from falling off the hook 1 and protecting the object;

[0024] Further, the limit component 66 includes: a connecting block 661 fixedly connected to the outer wall of the curved column 65. The curved column 65 drives the connecting block 661 to move. A sliding groove 663 is formed in the inner wall of the hook 1. A roller 662 is fixedly connected to the surface of the connecting block 661. The connecting block 661 drives the roller 662 to move and fits against the inner wall of the sliding groove 663. The roller 662 moves in the sliding groove 663. Among them, the curved column 65 is limited by the rotation of the roller 662 in the sliding groove 663;

[0025] In the specific implementation process, it is particularly worth noting that when the curved column 65 moves, the curved column 65 drives the connecting block 661 to move. The connecting block 661 drives the roller 662 to move. The roller 662 moves in the sliding groove 663 to limit the curved column 65 and prevent the large amplitude of shaking of the curved column 65 when it moves;

[0026] Further, a reinforcing rib 21 is fixedly connected between the connecting column 2 and the hook 1. The reinforcing rib 21 increases the connection area between the connecting column 2 and the hook 1 and improves the overall strength of the hook 1;

[0027] In the specific implementation process, it is particularly worth noting that the reinforcing rib 21 increases the connection area between the connecting column 2 and the hook 1 and improves the overall strength of the hook 1;

[0028] Specifically, the staff moves the hook 1. The hook 1 drives the connecting column 2 to move. The connecting column 2 is inserted into the inside of the sleeve 3 to fix the hook 1. The reinforcing rib 21 increases the connection area between the connecting column 2 and the hook 1 and improves the overall strength of the hook 1. First, the curved column 65 is located above the hook 1, so that the upper right opening of the hook 1 is in an open state. The staff puts the rope on the object into the inside of the hook 1. After that, the staff moves the curved column 65 and inserts the bottom of the curved column 65 into the hook 1. As Figure 1 shown. After that, the staff rotates the rubber sleeve 61. The rubber sleeve 61 drives the knob 62 to rotate. The rubber sleeve 61 increases the friction of the knob 62 to prevent slipping. The knob 62 drives the threaded column 63 to rotate. The threaded column 63 is sequentially rotated into the threaded hole 64 of the curved column 65 and the threaded hole 64 on the inner wall of the hook 1 to fix the curved column 65, preventing the rope on the object from falling off the hook 1 and protecting the object. At this time, the curved column 65 drives the connecting block 661 to move. The connecting block 661 drives the roller 662 to move. The roller 662 moves in the sliding groove 663 to limit the curved column 65 and prevent the large amplitude of shaking of the curved column 65 when it moves.

[0029] Embodiment 2, consists of Figure 1 and 2It can be seen that connecting plates 4 are fixedly connected to both sides of the sleeve 3. The staff passes the steel cable on the external overhead crane through the two through slots 41, and winds the steel cable around the connecting plates 4, thereby fixing the hook 1 to the external overhead crane. Through slots 41 are formed in the inner walls of both connecting plates 4;

[0030] In the specific implementation process, it is particularly noted that the staff passes the steel cable on the external overhead crane through the two through slots 41, and winds the steel cable around the connecting plates 4, thereby fixing the hook 1 to the external overhead crane;

[0031] Furthermore, a bolt 5 passes through the inner walls of the connecting plate 4 and the sleeve 3. When the hook 1 needs to be replaced, the staff rotates the nut 51, rotates the nut 51 off the bolt 5, removes the bolt 5 from the connecting plate 4 and the sleeve 3, moves the hook 1, removes the connecting column 2 on the hook 1 from the sleeve 3, inserts the connecting column 2 on the replaced hook 1 into the sleeve 3, re-inserts the bolt 5 into the connecting plate 4, the sleeve 3 and the connecting column 2, and rotates the nut 51 back onto the bolt 5 to complete the replacement of the hook 1. The outer wall of the bolt 5 is threadedly connected with the nut 51;

[0032] In the specific implementation process, it is particularly noted that when the hook 1 needs to be replaced, the staff rotates the nut 51, rotates the nut 51 off the bolt 5, removes the bolt 5 from the connecting plate 4 and the sleeve 3, moves the hook 1, removes the connecting column 2 on the hook 1 from the sleeve 3, inserts the connecting column 2 on the replaced hook 1 into the sleeve 3, re-inserts the bolt 5 into the connecting plate 4, the sleeve 3 and the connecting column 2, and rotates the nut 51 back onto the bolt 5 to complete the replacement of the hook 1.

[0033] Specifically, the staff passes the steel cable on the external overhead crane through the two through slots 41, and winds the steel cable around the connecting plates 4, thereby fixing the hook 1 to the external overhead crane. When the hook 1 needs to be replaced, the staff rotates the nut 51, rotates the nut 51 off the bolt 5, removes the bolt 5 from the connecting plate 4 and the sleeve 3, moves the hook 1, removes the connecting column 2 on the hook 1 from the sleeve 3, inserts the connecting column 2 on the replaced hook 1 into the sleeve 3, re-inserts the bolt 5 into the connecting plate 4, the sleeve 3 and the connecting column 2, and rotates the nut 51 back onto the bolt 5 to complete the replacement of the hook 1.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for preventing the falling off of a driving hook, comprising a hook (1), characterized in that: A connecting column (2) is fixedly connected to the surface of the hook (1). The outer wall of the connecting column (2) is inserted into the inner wall of the sleeve (3). An anti-detachment mechanism (6) is arranged outside the hook (1). The anti-detachment mechanism (6) includes: a rubber sleeve (61) arranged outside the hook (1); a curved column (65) penetrating through the inner wall of the hook (1) and movably connected to the hook (1); threaded holes (64) respectively opened in the inner wall of the hook (1) and the inner wall of the curved column (65); a rotary knob (62) fixedly connected to the inner wall of the rubber sleeve (61); a threaded column (63) fixedly connected to the surface of the rotary knob (62) and threadedly connected to the inner wall of the threaded hole (64); a limiting component (66) arranged inside the hook (1); wherein, when the threaded column (63) is driven by the rotary knob (62), it rotates into the threaded hole (64), and the end of the curved column (65) is fixed to the inner wall of the hook (1) to protect the object from falling off. The curved column (65) is limited by the limiting component (66).

2. The anti-detachment protection device for a driving hook according to claim 1, wherein: The limiting component (66) includes: a connecting block (661) fixedly connected to the outer wall of the curved column (65); a sliding groove (663) opened in the inner wall of the hook (1); a roller (662) fixedly connected to the surface of the connecting block (661) and fitting on the inner wall of the sliding groove (663); wherein, the curved column (65) is limited by the rotation of the roller (662) in the sliding groove (663).

3. A anti - falling protection device for a driving hook according to claim 1, characterized in that: A reinforcing rib (21) is fixedly connected between the connecting column (2) and the hook (1).

4. The anti-detachment protection device for a driving hook according to claim 1, characterized in that: Connecting plates (4) are fixedly connected to both sides of the sleeve (3). Through grooves (41) are opened in the inner walls of the two connecting plates (4).

5. The anti-detachment protection device for a driving hook according to claim 4, wherein: A bolt (5) penetrates through the inner walls of the connecting plate (4) and the sleeve (3). A nut (51) is threadedly connected to the outer wall of the bolt (5).

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