Crane hook

Abstract

The utility model relates to the technical field of crane accessories, in particular to a crane lifting hook which comprises a lifting hook body and an arc-shaped groove formed in the side wall of an inner cavity of the lifting hook body, an arc-shaped clamping plate is further rotationally installed on the side wall of the inner cavity of the lifting hook body, and a rubber air bag cushion is fixedly installed on the side wall of the inner cavity of the arc-shaped clamping plate. The driving mechanism can drive the arc-shaped clamping plate to rotate, so that a lifting rope or a hook and the like can be clamped and fixed, the rubber air bag cushion is inflated synchronously, the situation that some lifting ropes or hooks and the like are relatively thin can be avoided, and gaps between the arc-shaped clamping plate and the lifting ropes or the hooks and the like are filled in the clamping process; and the limiting effect on the lifting rope, the hook and the like can be effectively improved, so that the conditions of sliding movement and the like of the lifting rope, the hook and the like in the lifting process can be effectively reduced, correspondingly, the stability in the actual lifting process can be effectively improved, and the service life of the lifting rope, the hook and the like used for the lifting hook and goods can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of crane accessories, in particular to a crane hook. Background Art

[0002] The hook of a crane is a key component used in lifting equipment for hanging and lifting heavy objects. It is usually made of high-strength materials. It connects the heavy object to the crane through a hook-shaped structure to achieve the lifting and movement of the object. Before the heavy object is hung and lifted, in order to prevent the object from falling off the hook during the lifting and movement process, a locking structure is generally provided on the hook to block and connect the opening of the hook, thereby preventing the object from falling off the hook during lifting. However, during the actual lifting and movement process, due to its inertia, the object will shake to varying degrees, causing the hook or rope used to fix the object to slide inside the hook of the crane, which may cause the hook to slide to one side, resulting in unstable center of gravity and other problems, affecting the stability of the lifting of the object. In addition, the sliding movement of the hook and rope on the crane hook will also cause corresponding wear to the hook, rope and crane hook, affecting their service life.

[0003] In view of this, we propose a crane hook. Utility Model Content

[0004] In response to the above-mentioned shortcomings of the existing technology, the utility model provides a crane hook, which can effectively solve the problem that the hook and rope of the existing technology may slide on the crane hook, affecting the stability of the lifting of objects, and causing wear on the hook, thereby affecting the service life.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The utility model provides a crane hook, comprising a hook body and an arc-shaped groove provided on the inner cavity side wall of the hook body, wherein an arc-shaped clamping plate is rotatably mounted on the inner cavity side wall of the hook body, and a rubber airbag cushion is fixedly mounted on the inner cavity side wall of the arc-shaped clamping plate;

[0007] Among them, a connecting rod is fixedly installed at one end of the arc-shaped splint, and a driving mechanism is provided at the end of the connecting rod away from the arc-shaped splint. The driving mechanism can drive the arc-shaped splint to rotate and at the same time suck the gas in the rubber airbag cushion.

[0008] Furthermore, the driving mechanism includes a push-pull rod rotatably mounted on one end of the connecting rod away from the arc-shaped clamping plate, and a threaded sleeve is rotatably mounted on one end of the push-pull rod away from the connecting rod.

[0009] Furthermore, a screw rod is threadedly connected to the inner cavity side wall of the threaded sleeve, a fixing bracket is rotatably mounted on the bottom of the screw rod, and one side of the fixing bracket is fixedly mounted on the surface of the hook body.

[0010] Furthermore, the top of the screw rod rotates through the fixing frame, and a knob is fixedly installed on the top of the screw rod.

[0011] Furthermore, a push rod is fixedly installed on the top of the threaded sleeve, the top of the push rod moves through the fixing frame, and a sealing piston is also fixedly installed on the top of the push rod.

[0012] Furthermore, a piston cylinder is sleeved on the surface of the sealing piston, the bottom of the piston cylinder is fixedly mounted on the top of the fixing frame, a telescopic hose is fixedly mounted on the top of the piston cylinder, and the end of the telescopic hose away from the piston cylinder is fixedly mounted on one side of the rubber airbag cushion.

[0013] Compared with the known public technologies, the technical solution provided by this utility model has the following beneficial effects:

[0014] The utility model is provided with an arc groove, which can simply limit the hook and rope used to fix the goods, so that it can be placed in the center position of the hook body, and the arc clamp can be driven to rotate by the driving mechanism, so that the rope or hook can be clamped and fixed, and the rubber airbag cushion can be inflated simultaneously, which can avoid the situation that some ropes or hooks are relatively thin, and the gap between the arc clamp and the rope and hook can be filled during the clamping process, which can effectively improve the limiting effect of the rope and hook, thereby effectively reducing the sliding movement of the rope or hook during the lifting process, and correspondingly effectively improving the stability in the actual lifting process, and increasing the service life of the hook and the rope and hook used for the goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0016] Figure 1 This is a schematic structural diagram of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the partial structure of the hook body of the utility model;

[0018] Figure 3 This is a schematic diagram of the partial structure of the piston cylinder of the present invention.

[0019] The numbers in the figure represent: 1. Hook body; 2. Arc groove; 3. Arc splint; 4. Rubber airbag cushion; 5. Connecting rod; 6. Fixing bracket; 7. Screw; 8. Push-pull rod; 9. Piston cylinder; 10. Telescopic hose; 11. Threaded sleeve; 12. Push rod; 13. Knob; 14. Sealing piston. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to the embodiments.

[0022] A crane hook comprises a hook body 1 and an arcuate groove 2 defined in the inner side wall of the hook body 1. An arcuate clamping plate 3 is rotatably mounted on the inner side wall of the hook body 1. A rubber airbag cushion 4 is fixedly mounted on the inner side wall of the arcuate clamping plate 3. A connecting rod 5 is fixedly mounted on one end of the arcuate clamping plate 3. A driving mechanism is provided on the end of the connecting rod 5 remote from the arcuate clamping plate 3. The driving mechanism can drive the arcuate clamping plate 3 to rotate and simultaneously extract gas from the rubber airbag cushion 4.

[0023] Specifically, the driving mechanism includes a push-pull rod 8 rotatably mounted on one end of the connecting rod 5 away from the arc-shaped splint 3, a threaded sleeve 11 rotatably mounted on the end of the push-pull rod 8 away from the connecting rod 5, a screw rod 7 is threadedly connected to the inner cavity side wall of the threaded sleeve 11, a fixing bracket 6 is rotatably mounted on the bottom of the screw rod 7, one side of the fixing bracket 6 is fixedly mounted on the surface of the hook body 1, the top of the screw rod 7 rotates through the fixing bracket 6, and a knob 13 is fixedly mounted on the top of the screw rod 7;

[0024] Specifically, the arc groove 2 opened by the hook body 1 can be used to position the goods when they are suspended, and it can also play a corresponding limiting role in the lifting process. At the same time, when the goods are hung by the hook rope, etc., the screw rod 7 installed at the bottom of the inner cavity of the fixing frame 6 can be driven to rotate by rotating the knob 13, so that one end of the push-pull rod 8 can be driven to move by the threaded sleeve 11, and the other end of the push-pull rod 8 can be driven to rotate the connecting rod 5. At this time, the arc splint 3 can be rotated to rotate its rope or The hook etc. are clamped and fixed, and when the arc-shaped splint 3 is rotated by the driving mechanism, the rubber airbag cushion 4 in the arc-shaped splint 3 can be inflated to fill the gap between the arc-shaped splint 3 and the lifting rope or hook, and further limit the position of the lifting rope and hook. Moreover, the rubber airbag cushion 4 can also play a corresponding buffering effect by utilizing its own elastic deformation ability when the goods are hoisted and shaken, so that the lifting rope and hook etc. can move and slide within a reasonable distance in the hook body 1 during the hoisting process;

[0025] Furthermore, a push rod 12 is fixedly mounted on the top of the threaded sleeve 11. The top of the push rod 12 movably passes through the fixing frame 6. A sealing piston 14 is also fixedly mounted on the top of the push rod 12. The surface of the sealing piston 14 is sleeved with a piston cylinder 9. The bottom of the piston cylinder 9 is fixedly mounted on the top of the fixing frame 6. A telescopic hose 10 is fixedly mounted on the top of the piston cylinder 9. The end of the telescopic hose 10 away from the piston cylinder 9 is fixedly mounted on one side of the rubber airbag cushion 4.

[0026] Specifically, the guiding and limiting function of the piston cylinder 9 and the sealing piston 14 is utilized so that the screw rod 7 can be rotated and the threaded sleeve 11 can be driven to perform linear motion. When the arc-shaped splint 3 is clamped, the threaded sleeve 11 rises, thereby driving the push rod 12 and the sealing piston 14 to move upward, and the rubber airbag cushion 4 can be inflated through the sealing piston 14 and the top telescopic hose 10. The thinner the rope or hook, the greater the angle of rotation of the arc-shaped splint 3. Similarly, the rubber airbag cushion 4 is inflated more, making it expand more, so that its gap can be better filled. Conversely, when the arc-shaped splint 3 is loosened from the rope hook, etc., the gas in the rubber airbag cushion 4 can be extracted.

[0027] The working principle of the present invention is as follows: the arc groove 2 opened by the hook body 1 can be used to position the goods when they are suspended, and it can also play a corresponding limiting role in the lifting process. At the same time, when the goods are suspended by the hook rope, etc., the screw rod 7 installed at the bottom of the inner cavity of the fixing frame 6 can be driven to rotate by rotating the knob 13. The guiding and limiting effect of the piston cylinder 9 and the sealing piston 14 can be used to make the screw rod 7 rotate while driving the threaded sleeve 11 to move linearly, so that the threaded sleeve 11 can be used to drive one end of the push-pull rod 8 to move, and the other end of the push-pull rod 8 can be used to drive the connecting rod 5 to rotate. At this time, the arc splint 3 can be rotated to clamp and fix its rope or hook, etc. When clamping, the threaded sleeve 11 rises, thereby driving the push rod 12 and the sealing piston 14 to move upward, and the rubber airbag cushion 4 can be inflated through the sealing piston 14 and the telescopic hose 10 on the top. When the rope or hook is thinner, the angle of rotation of the arc-shaped splint 3 is larger. Similarly, the rubber airbag cushion 4 is inflated more, making it expand to a greater extent, so that the gap can be better filled. On the contrary, when the arc-shaped splint 3 is loosened to the rope hook, etc., the gas in the rubber airbag cushion 4 can be extracted. The rubber airbag cushion 4 can also use its own elastic deformation ability to play a corresponding buffering effect when the cargo is hoisted and shakes, so that the rope hook, etc. can move and slide within a reasonable distance within the hook body 1 during the hoisting process.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A crane hook, characterized in that: include: A hook body (1) and an arc-shaped groove (2) formed on the inner cavity side wall of the hook body (1); an arc-shaped clamping plate (3) is rotatably mounted on the inner cavity side wall of the hook body (1); and a rubber airbag cushion (4) is fixedly mounted on the inner cavity side wall of the arc-shaped clamping plate (3); A connecting rod (5) is fixedly mounted on one end of the arc-shaped splint (3), and a driving mechanism is provided on the end of the connecting rod (5) away from the arc-shaped splint (3). The driving mechanism can drive the arc-shaped splint (3) to rotate and simultaneously can suck the gas in the rubber airbag cushion (4).

2. A crane hook according to claim 1, characterized in that: The driving mechanism comprises a push-pull rod (8) rotatably mounted on one end of a connecting rod (5) away from the arc-shaped clamping plate (3); and a threaded sleeve (11) rotatably mounted on one end of the push-pull rod (8) away from the connecting rod (5).

3. A crane hook according to claim 2, characterized in that: The inner cavity side wall of the threaded sleeve (11) is threadedly connected with a screw rod (7), and a fixing frame (6) is rotatably mounted on the bottom of the screw rod (7), and one side of the fixing frame (6) is fixedly mounted on the surface of the hook body (1).

4. A crane hook according to claim 3, characterized in that: The top of the screw rod (7) rotates and passes through the fixing frame (6), and a knob (13) is fixedly installed on the top of the screw rod (7).

5. A crane hook according to claim 4, characterized in that: A push rod (12) is fixedly mounted on the top of the threaded sleeve (11), the top of the push rod (12) movably passes through the fixing frame (6), and a sealing piston (14) is also fixedly mounted on the top of the push rod (12).

6. A crane hook according to claim 5, characterized in that: The surface of the sealing piston (14) is sleeved with a piston cylinder (9), the bottom of the piston cylinder (9) is fixedly mounted on the top of the fixing frame (6), the top of the piston cylinder (9) is fixedly mounted with a telescopic hose (10), and the end of the telescopic hose (10) away from the piston cylinder (9) is fixedly mounted on one side of the rubber airbag cushion (4).

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