Lifting hook and hoisting equipment

Abstract

The hoisting equipment comprises a hoisting device and the hoisting hook, the hoisting hook comprises a hoisting hook body, an elastic device, a locking device and a limiting piece, the hoisting hook body comprises a hook body and a hook tip, a hook opening is formed between the hook body and the hook tip, a sliding groove is formed in the hook body, and the sliding groove and the hook opening are oppositely arranged; the elastic device comprises an elastic piece and a sliding block, the elastic piece is arranged in the sliding groove and located at the end away from the hook tip, and the sliding block is connected with the elastic piece. The locking device comprises a locking piece and a torsional spring, the locking piece comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotationally connected with the sliding block, one end of the second connecting rod is connected to the first connecting rod, and the torsional spring is arranged between the sliding block and the locking piece and drives the second connecting rod to rotate; the limiting piece is located at the top of the sliding groove and used for limiting the rotating angle of the second connecting rod. When the sliding block slides in the sliding groove, the locking piece is driven to stretch out and draw back at the hook opening so that the lifting hook can be switched between the opening state and the locking state, and the hand of an operator can be prevented from being injured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting machinery, in particular to a hook and hoisting equipment. BACKGROUND

[0002] In order to prevent the lifting appliance on the hook from being unhooked, a locking device needs to be arranged on the hook when the existing hoisting equipment hoists heavy objects. The locking device is generally a metal locking plate, which is fixed on the hook through a rotating shaft and a pin top, and a spring is arranged between the locking plate and the hook. Under the action of the spring force, the end of the locking plate is pressed against the inner wall of the hook head to achieve a locked state. When the hook is removed or hung, the locking plate needs to be pressed by force to make the locking plate rotate around the rotating shaft, so that the end of the locking plate can be separated from the inner wall of the hook head. However, in this process, the fingers of the operator are easily squeezed by the locking plate and the hook head, which may cause finger injury. CONTENT OF THE UTILITY MODEL

[0003] The hook and hoisting equipment provided by the embodiments of the present application can prevent the hands of the operator from being injured.

[0004] In a first aspect, the embodiments of the present application provide a hook, which comprises a hook body, an elastic device, a locking device and a limiting piece. The hook body comprises a hook body and a hook tip connected with each other, and a hook opening is formed between the hook body and the hook tip. A sliding groove is arranged on the hook body, and the sliding groove has an opening direction which is the same as the opening direction of the hook opening. The elastic device comprises an elastic piece and a sliding block. The elastic piece is arranged in the sliding groove and located at one end away from the hook tip. The sliding block is connected with the elastic piece and slides in the sliding groove. The locking device comprises a locking piece and a torsion spring. The locking piece comprises a first connecting rod and a second connecting rod. One end of the first connecting rod is rotationally connected with the sliding block, and one end of the second connecting rod is connected with the first connecting rod. The other end of the second connecting rod penetrates the opening and extends to the hook opening. The torsion spring is arranged between the sliding block and the locking piece, and is used to drive the second connecting rod to rotate towards the hook tip, so that one end of the second connecting rod located in the hook opening abuts against the hook tip. The limiting piece is arranged on the hook body and located at the top of the sliding groove. The limiting piece is used to limit the rotation angle of the second connecting rod. When the sliding block slides in the sliding groove, the sliding block drives the locking device to slide, and the locking piece extends and retracts at the hook opening to switch the hook between an open state and a locked state.

[0005] In a possible implementation, the sliding groove penetrates to opposite sides of the hook body. The middle part of the first connecting rod is rotationally connected with the sliding block, and both sides of the first connecting rod extend out of the sliding groove and are located at both sides of the hook body. One end of each of the two second connecting rods is connected with one side of the first connecting rod.

[0006] In the present implementation, the stability of the connection between the second connecting rod and the first connecting rod can be improved, and thus the stability of the present application can be ensured.

[0007] In a possible implementation, the limiting piece comprises a fixed part and a limiting part connected to each other, the fixed part is connected to the hook body, and the limiting part is arranged in a spaced manner with the hook body, the bottom wall of the limiting part is arranged in parallel with the chute, and the top of the second connecting rod abuts against the bottom wall of the limiting part.

[0008] In a possible implementation, a linear bearing is further arranged, a fixing hole is arranged on the sliding block, the linear bearing is arranged in the fixing hole, and the first connecting rod is arranged in the linear bearing and rotates in the linear bearing.

[0009] In the present implementation, the linear bearing can improve the stability of the rotation of the first connecting rod.

[0010] In a possible implementation, the second connecting rod comprises a connecting part and an abutting part connected to each other, the connecting part is connected to the first connecting rod, and the abutting part abuts against the hook tip.

[0011] In the present implementation, the processing is simple, and the cost is low.

[0012] In a possible implementation, a baffle is further arranged, the baffle is connected to one end of the second connecting rod away from the first connecting rod, and the baffle abuts against the hook tip.

[0013] In the present implementation, the baffle can increase the contact area with the hook tip, and thus the stability of the present application in the locked state can be improved.

[0014] In a possible implementation, the first connecting rod is provided with a handle part on the side away from the sliding block.

[0015] In the present implementation, the handle part can increase the force-receiving part of the first connecting rod for the operator, and thus the first connecting rod can be pulled conveniently.

[0016] In a possible implementation, the hook further comprises an ear, the ear is connected to the hook body, and the ear is used to be connected to the hoisting equipment.

[0017] In the present implementation, the ear can facilitate the connection between the hook and the hoisting equipment.

[0018] In a possible implementation, the hook body is provided with a clamping groove or a clamping convex part on the side facing the hook opening.

[0019] In the present implementation, the clamping groove or the clamping convex part can effectively prevent the goods from falling off the hook opening.

[0020] Based on the hook of the embodiment of the present application, the elastic member drives the sliding block to move towards the direction of the hook tip, thereby driving the locking member to move towards the direction of the hook tip, under the action of the torsion spring, the second connecting rod rotates towards the direction of the hook tip, thereby the other end of the second connecting rod can abut against the hook tip, at this time, the hook is in the closed state. When the hook needs to load the goods, the goods are hung into the hook opening, under the action of the gravity of the goods, the torsion spring is compressed, thereby the second connecting rod rotates away from the direction of the hook tip, at this time, the hook is in the open state. This rotating mode is simple and convenient for loading the goods. When the operator needs to open the hook, the first connecting rod is pulled by hand and drives the sliding block to slide in the sliding groove, thereby the second connecting rod can move away from the direction of the hook tip, at this time, the end of the second connecting rod located in the hook opening can move away from the hook tip, the hook is in the open state, after the first connecting rod is released, under the action of the elastic member, the sliding block moves towards the direction of the hook tip, after moving to the position, the end of the second connecting rod located in the hook opening abuts against the hook tip, at this time, the hook is in the closed state. In the use process of the present application, the hands of the operator can be operated outside the hook tip, therefore, the hidden danger that the fingers of the operator are squeezed by the lock when the operator removes the lifting appliance can be avoided, and the personal safety of the operator is ensured.

[0021] In a second aspect, the embodiment of the present application provides a hoisting device, which comprises a hoisting device and the hook. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the structures shown in the drawings.

[0023] Figure 1 A side view of the hook provided by the embodiment of the present application;

[0024] Figure 2 A side view of the hook provided by the embodiment of the present application has a clamping protrusion;

[0025] Figure 3 A side view of the hook provided by the embodiment of the present application has a clamping groove;

[0026] Figure 4 A front view of the first embodiment of the hook provided by the embodiment of the present application;

[0027] Figure 5 A front view of the second embodiment of the hook provided by the embodiment of the present application;

[0028] Figure 6Fig. 3 is a front view of a third embodiment of the hook provided in the embodiments of the present application;

[0029] Figure 7 Fig. 1 is a structural schematic view of a first embodiment of the locking member provided in the embodiments of the present application;

[0030] Figure 8 Fig. 2 is a schematic view of the assembly of the second embodiment of the locking member and the sliding block provided in the embodiments of the present application.

[0031] Brief Description of the Drawings

[0032] 100, hook body; 110, hook body; 111, clamping protrusion; 112, clamping groove; 120, hook tip; 130, hook opening; 140, sliding groove; 200, elastic device; 210, elastic member; 220, sliding block; 300, locking device; 310, locking member; 311, first connecting rod; 3111, handle portion; 312, second connecting rod; 3121, connecting portion; 3122, resisting portion; 320, torsion spring; 400, limiting member; 410, fixed portion; 420, limiting portion; 500, baffle.

[0033] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present application more clear, the following will further describe the embodiments of the present application in combination with the accompanying drawings.

[0035] The following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0036] In the description of the present application, it should be understood that the terms "first", "second" and the like are used only for the purpose of description and should not be understood as indicating or implying relative importance. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise stated, "multiple" means two or more. "And / or", the association between the associated objects, means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. The character " / " generally represents that the associated objects before and after are a kind of "or" relationship.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0038] The hook and the hoisting equipment according to the embodiments of the present application include a hoisting device and a hook, wherein the hoisting device can be a bridge crane, a gantry crane, a tower crane, a truck crane, a winch, etc., and the present application is not limited thereto. The hook is connected to a lifting mechanism of the hoisting device and is used for hanging and hoisting cargos. In order to facilitate the connection between the hook and the hoisting device, an ear (not shown in the figure) is arranged on the hook and is used for connecting the hook with the hoisting equipment.

[0039] Please refer to Figure 1 The hook according to the embodiments of the present application includes a hook body 100, an elastic device 200, a locking device 300 and a limiting member 400.

[0040] The hook body 100 is composed of a hook body 110 and a hook tip 120, and a hook opening 130 is formed between the hook body 110 and the hook tip 120. The hook body 110 is mainly used for carrying cargos and can be made of steel or alloy steel, and the shape thereof can be a C-shaped or S-shaped curved shape. It can be understood that, in order to avoid the cargos from falling off the hook, please refer to Figure 2 and Figure 3 A clamping groove 112 or a clamping protrusion 111 is arranged on the side of the hook body 110 facing the hook opening 130, and in use, the cargos can be fixed in the clamping groove 112, thereby achieving the anti-falling-off function. The clamping protrusion 111 can increase the resistance of the cargos in the hook opening 130, thereby achieving the anti-falling-off function.

[0041] A sliding groove 140 is arranged on the hook body 110, and the sliding groove 140 has an opening facing the hook opening 130. It can be understood that, in order to improve the structural strength of the hook, please refer to Figure 6 The sliding groove 140 is a sheet metal part and is fixed on the side wall of the hook body 110 by welding, of course, in some embodiments, please refer to Figure 4 The sliding groove 140 can also be formed inside the hook body 100. The ear is connected to the hook body 110. The ear can be located on the upper part or the side of the hook body 110. In some connection modes, the ear can be fixed, i.e., the ear is directly welded or bolted with the hook body 110, or the ear can be detachable, i.e., the ear is installed with the hook body 110 by using a bolt or a pin, etc. In this regard, the present application does not limit the connection mode of the ear and the hook body 110.

[0042] The elastic device 200 includes an elastic member 210 and a sliding block 220, please refer toFigures 1 to 3 The elastic member 210 is arranged in the sliding groove 140 and located at an end away from the hook tip 120. The sliding block 220 is connected with the elastic member 210 and slides in the sliding groove 140. The sliding block 220 can move in the direction close to and away from the hook tip 120. The elastic member 210 can be a spring, a compression spring, a tension spring, etc. The present application does not limit the elastic member 210.

[0043] Please refer to Figure 4 , Figure 7 and Figure 8 , the locking device 300 includes a locking member 310 and a torsion spring 320. The locking member 310 includes a first connecting rod 311 and a second connecting rod 312. One end of the first connecting rod 311 is rotationally connected with the sliding block 220. One end of the second connecting rod 312 is connected with the first connecting rod 311, and the other end extends out of the opening and extends to the hook mouth 130. The first connecting rod 311 and the second connecting rod 312 can be integrally formed by hot pressing or integrally formed by injection molding. The first connecting rod 311 and the second connecting rod 312 can also be a split structure. When the first connecting rod 311 and the second connecting rod 312 are a split structure, they can be fixed by welding, or can be fixed by buckling, or can be fixed by bolts, etc. The present application does not limit the connection mode of the first connecting rod 311 and the second connecting rod 312. The torsion spring 320 is arranged between the sliding block 220 and the locking member 310 and is used to drive the second connecting rod 312 to rotate in the direction of the hook tip 120. In some connection modes, the torsion spring 320 is sleeved on the first connecting rod 311, one end of the torsion spring 320 is fixedly connected with the sliding block 220, and the other end is connected with the second connecting rod 312, so that the second connecting rod 312 can be driven to rotate in the direction of the hook tip 120, so that one end of the second connecting rod 312 located in the hook mouth 130 abuts against the hook tip 120, and the hook is in a locked state.

[0044] Please refer to Figure 5 In some embodiments, the sliding groove 140 extends through the opposite sides of the hook body 110. The middle part of the first connecting rod 311 is rotationally connected with the sliding block 220, and the two sides extend out of the sliding groove 140 and are located on the two sides of the hook body 110. One end of each of the two second connecting rods 312 is connected with the two sides of the first connecting rod 311. In this way, the stability of the connection between the second connecting rod 312 and the first connecting rod 311 can be improved, and the stability of the locking device 300 and the hook tip 120 in forming the locked state and the open state can be improved.

[0045] In some structural forms, please refer to Figure 7The second connecting rod 312 comprises a connecting portion 3121 and a resisting portion 3122. The connecting portion 3121 is connected with the first connecting rod 311. The resisting portion 3122 is abutted against the hook tip 120. During working, the second connecting rod 312 can be bent to form the connecting portion 3121 and the resisting portion 3122. This processing method is simple, easy to install and fixed, and low in cost.

[0046] In some structural forms, please refer to Figure 8 The application further comprises a baffle 500 connected to the second connecting rod 312 away from the first connecting rod 311. The baffle 500 is abutted against the hook tip 120. The baffle 500 can increase the contact area with the hook tip 120. The increased contact area can disperse the pressure, thereby reducing the pressure per unit area, reducing the stress concentration of the material, improving the carrying capacity and service life of the application, and improving the stability and reliability of the connection, thereby improving the stability of the locking state of the hook.

[0047] The first connecting rod 311 is provided with a handle portion 3111 away from the sliding block 220. The handle portion 3111 can provide an additional force arm, so that the operator can more easily exert force on the first connecting rod 311. When the force is applied to the first connecting rod 311, the sliding block 220 can be driven to slide in the sliding groove 140, so that the second connecting rod 312 can move away from the hook tip 120. At this time, the hook is in an open state. The handle portion 3111 of the application is extended and formed by the first connecting rod 311, which is simple to process. Of course, in other embodiments, the handle portion 3111 can also be designed in other shapes, for example, a ring shape. Herein, the structure and shape of the handle portion 3111 are not limited.

[0048] In order to improve the stability of the rotation of the first connecting rod 311, the application further comprises a linear bearing (not shown in the figure). The sliding block 220 is provided with a fixing hole. The linear bearing is arranged in the fixing hole. The first connecting rod 311 is fitted in the linear bearing and rotates in the linear bearing. The linear bearing can reduce the friction of the first connecting rod 311 when rotating in the sliding block 220, can provide high rotation efficiency, reduce wear and tear, and improve service life. In other embodiments, a ball bearing can also be used, which is not limited by the application.

[0049] The limiting piece 400 is arranged on the hook body 110 and located at the top of the sliding groove 140. The limiting piece 400 is used to limit the rotation angle of the second connecting rod 312, so that the torsional spring 320 can always elastically act on the second connecting rod 312, and the second connecting rod 312 is prevented from rotating excessively and deviating from the action force of the torsional spring 320. In some structural forms, the limiting piece 400 comprises a fixed part 410 and a limiting part 420 connected with each other. The fixed part 410 is connected with the hook body 110, and the limiting part 420 is arranged in a spaced manner with the hook body 110. The bottom wall of the limiting part 420 is arranged in parallel with the sliding groove 140. Specifically, in the process that the sliding block 220 slides in the sliding groove 140 to drive the locking piece 310 to move, the top of the second connecting rod 312 always abuts against the bottom wall of the limiting part 420. Since the bottom wall of the limiting part 420 is arranged in parallel with the sliding groove 140, that is, the rotation angle of the second connecting rod 312 is always consistent in the process that the locking piece 310 moves, the stability of the operation of the locking device 300 is improved.

[0050] In summary, in the natural state, the elastic piece 210 drives the sliding block 220 to move towards the hook tip 120, thereby driving the locking piece 310 to move towards the hook tip 120. Under the action of the torsional spring 320, the second connecting rod 312 rotates towards the hook tip 120. At this time, the other end of the second connecting rod 312 can abut against the hook tip 120, and the hook is in a closed state. When the hook needs to load goods, the goods are hung into the hook opening 130. At this time, under the action of the goods, the torsional spring 320 is compressed, so that the second connecting rod 312 rotates away from the hook tip 120, and the hook is in an open state. This rotating mode is simple and convenient for loading goods. If the operator needs to open the hook, the handle part 3111 of the first connecting rod 311 is pulled by hand, thereby driving the sliding block 220 to slide in the sliding groove 140. At this time, the second connecting rod 312 can move away from the hook tip 120. The limiting angle of the second connecting rod 312 is limited by the limiting piece 400, and the stability of the second connecting rod 312 in the movement process is improved. The resistance part 3122 or the baffle 500 can move away from the hook tip 120, and the hook is in an open state. When the operator releases the handle part 3111, the sliding block 220 moves towards the hook tip 120 under the action of the elastic piece 210, thereby driving the second connecting rod 312 to move towards the hook tip 120. After moving to the position, the resistance part 3122 or the baffle 500 abuts against the hook tip 120. At this time, the hook is in a locked state. The hook of the present application has two ways of loading goods, and the operator can choose one to use.

[0051] The embodiment of the present application can drive the first connecting rod 311 to move, and simultaneously drive the locking device 300 to slide, so that the locking piece 310 can be telescopic at the hook opening 130, and then the hook can switch between the open state and the locked state. Since the locking device 300 of the present application can be operated outside the hook tip 120 during use, the risk of the fingers being squeezed by the lock when the operator removes the lifting appliance can be avoided, and the personal safety of the operator is ensured.

[0052] The same or similar reference numerals in the drawings of the embodiment correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application, and for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0053] The above is only a preferred embodiment of the present application, and does not limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A hook for use in a lifting device, characterized in that The hook body comprises a hook body and a hook tip connected together, a hook opening is formed between the hook body and the hook tip, a sliding groove is arranged on the hook body and has an opening facing the opening of the hook opening; The elastic device comprises an elastic member and a sliding block, the elastic member is arranged in the sliding groove and located at an end away from the hook tip, the sliding block is connected with the elastic member and slides in the sliding groove; The locking device comprises a locking member and a torsion spring, the locking member comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotationally connected with the sliding block, one end of the second connecting rod is connected with the first connecting rod, and the other end of the second connecting rod penetrates through the opening and extends to the hook opening, the torsion spring is arranged between the sliding block and the locking member and is used to drive the second connecting rod to rotate towards the hook tip, so that one end of the second connecting rod located in the hook opening abuts against the hook tip; and The limiting member is arranged on the hook body and located at the top of the sliding groove, and is used to limit the rotation angle of the second connecting rod; When the sliding block slides in the sliding groove, the locking device slides, and the locking member extends and retracts at the hook opening to switch the hook between the open state and the locked state. The sliding groove penetrates through opposite sides of the hook body, the middle part of the first connecting rod is rotationally connected with the sliding block, and the two sides of the first connecting rod extend out of the sliding groove and are located on the two sides of the hook body, and one end of each of the two second connecting rods is connected with the two sides of the first connecting rod.

2. The hook of claim 1, wherein The limiting member comprises a fixed part and a limiting part connected together, the fixed part is connected with the hook body, the limiting part is arranged in a spaced manner with the hook body, the bottom wall of the limiting part is arranged in parallel with the sliding groove, and the top of the second connecting rod abuts against the bottom wall of the limiting part.

3. The hook of claim 1 wherein, A linear bearing is further arranged, a fixing hole is arranged on the sliding block, the linear bearing is arranged in the fixing hole, and the first connecting rod is fitted in the linear bearing and rotates in the linear bearing.

4. The hook of claim 1 wherein, The second connecting rod comprises a connecting part and a resisting part connected together, the connecting part is connected with the first connecting rod, and the resisting part abuts against the hook tip.

5. The hook of claim 1 wherein, A baffle is further arranged, the baffle is connected with one end of the second connecting rod away from the first connecting rod, and the baffle abuts against the hook tip.

6. The hook of claim 1 wherein, A handle part is arranged on the side of the first connecting rod away from the sliding block.

7. A hook according to any one of claims 1 to 6, characterised in that The hook further comprises an ear, the ear is connected with the hook body and is used to be connected with the hoisting equipment.

8. A hook according to any one of claims 1 to 6, characterised in that A clamping groove or a clamping convex part is arranged on the side of the hook body facing the hook opening.

9. A hook according to any one of claims 1 to 6, wherein The hoisting device and the hook according to any one of claims 1-9 are comprised.

10. A hoisting apparatus characterized by, ​

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