Automatic locking and unhooking lifting hook

Abstract

The invention provides an automatic locking and unhooking lifting hook, and belongs to the technical field of hanging devices, the automatic locking and unhooking lifting hook comprises a hook body, a locking rod hinged to one end of the hook body and a connecting ring arranged at the other end of the hook body; a bearing plate is arranged on the inner bottom wall of the hook body in a sliding and lifting mode, a transmission part is arranged between the bearing plate and the locking rod, and the transmission part is used for driving the locking rod to rotate until the opening in the hook body is closed when the bearing plate is stressed to descend; the hook body is provided with a reset assembly used for driving the bearing plate and the locking rod to reset after the bearing plate is not stressed. A locking groove allowing the end of the locking rod to rotate in is formed in the inner side of the hook body, a reinforcing mechanism is arranged in the locking groove, and the reinforcing mechanism is used for fixing the end of the locking rod when the rope pulls the connecting ring upwards and is further used for relieving fixing of the end of the locking rod after the connecting ring is not stressed. According to the lifting hook, the hook body can be automatically opened, operation intervention of operators is not needed, and the automatic locking and unhooking efficiency of the lifting hook is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of hanging devices, and more specifically, relates to an automatic locking and unhooking hook. Background Art

[0002] The hook is the most common lifting device in lifting machinery. Currently, the most common hook is a semi-open structure. The operator places the lifting rope into the hook and then directly lifts the hook. However, this type of hook has low safety and is prone to unhooking.

[0003] The existing Chinese patent with reference announcement number CN219950228U discloses an automatic locking hook, including a control bin, a hook body and a safety tongue. The control bin includes a bin body, a tension spring, a torsion spring and a hanging ring. The bottom of the bin body is provided with a hook body hole, a safety tongue hole and a load-bearing block. The load-bearing block is fixedly arranged next to the hook body hole. The tension spring is vertically arranged, one end is fixedly connected to the bin body, and the other end is fixedly connected to the hook body. The hanging ring is rotatably connected to the top of the bin body. One end of the hook body penetrates into the bin body from the hook body hole. A limit rod and a limit block cooperating with the load-bearing block are also fixedly arranged on the hook body. One end of the safety tongue penetrates into the bin body from the safety tongue hole and is rotatably connected to the bin body through the torsion spring. The other end of the safety tongue penetrates out of the bin body from the safety tongue hole. A limit groove cooperating with the limit rod is also arranged on the safety tongue.

[0004] Although the above-mentioned hook has a safety tongue to increase the safety of the hook when in use, it also increases the difficulty of operation for the operator, resulting in a low efficiency in raising and lowering the hook. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic locking unhooking hook to solve the technical problem in the prior art that the operating difficulty of the operator is increased, resulting in low efficiency in hooking up and down.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an automatic locking and unhooking hook, including a hook body; also including a locking rod hinged at one end of the hook body and a connecting ring arranged at the other end of the hook body, the connecting ring being connected to a lifting machinery through a rope; a load-bearing plate is slidably raised and lowered on the bottom wall of the hook body, and a transmission member is arranged between the load-bearing plate and the locking rod, the transmission member is used to drive the locking rod to rotate to close the opening on the hook body when the load-bearing plate is subjected to force and lowers; a reset component is arranged on the hook body for driving the load-bearing plate and the locking rod to reset after the load-bearing plate is not subjected to force; a locking groove is arranged on the inner side of the hook body for the end of the locking rod to be rotated into, and a reinforcement mechanism for fixing the end of the locking rod therein is arranged in the locking groove, the reinforcement mechanism is used to fix the end of the locking rod when the rope pulls up the connecting ring, and the reinforcement mechanism is also used to release the fixation of the end of the locking rod after the connecting ring is not subjected to force.

[0007] In combination with the above technical solution, in a possible implementation method, the transmission member is a winding rope, one end of the transmission member is connected to the load-bearing plate, the other end of the transmission member is fixed and wound around the rotating shaft of the locking rod, the locking rod is fixed to its own rotating shaft, and the rotating shaft of the locking rod is rotatably connected to the end of the hook body; the transmission member is always in a taut state; when the load-bearing plate descends, the transmission member drives the locking rod to rotate to close the opening on the hook body.

[0008] In combination with the above technical solution, in a possible implementation, the reset assembly includes a reset rod, a reset spring and a torsion spring, the reset rod is slidably connected to the bottom of the hook body and is fixed to the load-bearing plate, the reset spring is arranged between the hook body and the reset rod, the torsion spring is sleeved on the rotating shaft of the locking rod, and the torsion spring is connected between the locking rod and the hook body; when the torsion spring and the reset spring are in a natural state, the opening on the hook body is in an open state, and a distance is left between the load-bearing plate and the bottom of the hook body; when the load-bearing plate descends to be pressed against the bottom of the hook body, the end of the locking rod rotates into the locking groove.

[0009] In combination with the above technical solution, in a possible implementation, the reinforcement mechanism includes a lifting plate, a lifting spring, a connecting assembly and a force transmission assembly; the lifting plate is arranged at the top inside the connecting ring, and the lifting spring has multiple components and is arranged between the connecting ring and the lifting plate; the connecting assembly is used to fix the locking rod in the locking groove through the force transmission assembly when the lifting plate is moved upward by tension; the connecting assembly is also used to release the fixed state of the locking rod through the force transmission assembly after the lifting plate is not subjected to tension and moves downward.

[0010] In combination with the above technical solution, in a possible implementation, the connecting assembly includes a connecting spring, a connecting block, a moving block, a reset member and an extrusion rod; connecting grooves are provided on both sides of the bottom of the locking rod, and the connecting grooves are opened toward the outside of the locking rod; the connecting spring is arranged in the corresponding connecting groove, and the connecting block is slidably connected in the corresponding connecting groove and connected to the connecting spring; a limiting groove is provided above the outer side of the connecting groove; and receiving grooves for connecting the corresponding limiting grooves are provided on both sides of the locking groove, and the moving block is slidably connected in the corresponding receiving grooves. The reset member is arranged on one side of the accommodating groove and is used to drive the moving block to reset; the bottom surface of the connecting block is an inclined surface for extrusion of the corresponding end of the moving block; a lifting groove is provided below the accommodating groove, and the extrusion rod is slidably connected in the lifting groove; an extrusion groove for inserting the extrusion rod is provided on the bottom surface of the moving block, and the extrusion groove is inclined toward one side of the locking rod, and when the extrusion rod squeezes the moving block upward, the moving block slides toward the limiting groove; the force transmission component is used to drive the extrusion rod to move upward when the lifting plate is pulled upward.

[0011] In combination with the above technical solution, in a possible implementation, sliders are fixed on both sides of the connection block, and sliding grooves are opened on both sides of the connection groove, and the sliders are slidably arranged in the sliding grooves.

[0012] In combination with the above technical solution, in a possible implementation, when the reset member is in a natural state, the end of the moving block is still located in the limiting groove, and the end of the moving block located in the limiting groove is hemispherical.

[0013] In combination with the above technical solution, in a possible implementation, the force transmission component includes a lifting plate, a pull-down spring and a force transmission rope, the bottom of the two lifting grooves is opened with the same lifting groove, the lifting plate is slidably arranged in the lifting groove, the pull-down spring has multiple parts and is arranged under the lifting plate; the force transmission rope is connected between the lifting plate and the lifting plate; when the pull-down spring is in a natural state, the extrusion rod is in a state of not squeezing the moving block; the force transmission rope is always in a taut state.

[0014] In combination with the above technical solution, in a possible implementation, the reset member includes a reset block and a telescopic spring, the reset block is fixed on one side of the moving block, and the telescopic spring is connected between the reset block and the inner wall of the accommodating groove.

[0015] In combination with the above technical solution, in a possible implementation, a plurality of groups of vertical telescopic rods are arranged between the connecting ring and the lifting plate.

[0016] The beneficial effect of an automatic locking and unhooking hook provided by the present invention is that: compared with the prior art, the present invention places the rope of the object to be lifted into the hook body, and the lifting machinery directly lifts the object upwards. At this time, the load-bearing plate is lowered by the pressure of the rope of the object to be lifted, so that the transmission member drives the locking rod to rotate to close the opening of the hook body, thereby realizing automatic locking of the hook body; after the end of the locking rod is rotated into the locking groove, the reinforcement mechanism fixes the end of the locking rod to further improve the safety of the hook; after the lifting is completed and moved downward, the load-bearing plate and the connecting ring are no longer subjected to the pressure of the object to be lifted and the pulling force of the lifting machinery, the reinforcement mechanism automatically releases the fixation of the end of the locking rod, and the reset assembly drives the locking rod to rotate in the opposite direction to reset, thereby realizing automatic opening of the hook body, and the lifting machinery then lowers and moves the hook away to detach from the object to be lifted, without the need for operating personnel to intervene in operation, thereby improving the automatic locking and unhooking efficiency of the hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the structure of an automatic locking unhooking hook provided by an embodiment of the present invention;

[0019] Figure 2 A partial cross-sectional view of an automatic locking unhooking hook provided by an embodiment of the present invention;

[0020] Figure 3 A partial cross-sectional view of a reinforcement mechanism provided by an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the structure of a slider and a slide groove provided in an embodiment of the present invention;

[0022] Figure 5 A side view of a jacking plate and jacking spring provided for an embodiment of the present invention.

[0023] Among them, the reference numerals in the figures are as follows:

[0024] 1. Hook body; 11. Load-bearing plate; 12. Transmission member; 13. Locking groove; 14. Accommodating groove; 15. Lifting groove; 16. Lifting groove; 2. Locking rod; 21. Connecting groove; 22. Limiting groove; 23. Sliding groove; 24. Sliding block; 3. Connecting ring; 4. Reset assembly; 41. Reset rod; 42. Reset spring; 5. Reinforcement mechanism; 51. Lifting plate; 511. Telescopic rod; 52. Lifting spring; 53. Connecting assembly; 531. Connecting spring; 532. Connecting block; 533. Moving block; 5331. Extrusion groove; 534. Reset member; 5341. Reset block; 5342. Telescopic spring; 535. Extrusion rod; 54. Force transmission assembly; 541. Lifting plate; 542. Pull-down spring; 543. Force transmission rope. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0026] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0027] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0028] The directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. The directions or positional relationships indicated by the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0029] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0031] An automatic locking unhooking hook provided by the present invention is now described.

[0032] like Figure 1 and Figure 2 As shown, one embodiment of the present invention provides an automatic locking unhooking hook, comprising a hook body 1, a locking rod 2 hinged at one end of the hook body 1 and a connecting ring 3 arranged at the other end of the hook body 1, the connecting ring 3 being connected to a lifting machine through a rope; a load-bearing plate 11 is slidably lifted and lowered on the inner bottom wall of the hook body 1, a transmission member 12 is arranged between the load-bearing plate 11 and the locking rod 2, the transmission member 12 is used to drive the locking rod 2 to rotate to close the opening on the hook body 1 when the load-bearing plate 11 is subjected to force and descends; a reset component 4 is arranged on the hook body 1 for driving the load-bearing plate 11 and the locking rod 2 to reset after the load-bearing plate 11 is not subjected to force; a locking groove 13 is provided on the inner side of the hook body 1 for the end of the locking rod 2 to rotate into, a reinforcement mechanism 5 for fixing the end of the locking rod 2 therein is arranged in the locking groove 13, the reinforcement mechanism 5 is used to fix the end of the locking rod 2 when the rope pulls up the connecting ring 3, and the reinforcement mechanism 5 is also used to release the fixation of the end of the locking rod 2 after the connecting ring 3 is not subjected to force.

[0033] The automatic locking and unhooking hook provided in the present embodiment, compared with the prior art, is a hook that directly lifts the object upwards by placing the rope of the object to be lifted into the hook body 1. At this time, the load-bearing plate 11 is lowered by the pressure of the rope of the object to be lifted, so that the transmission member 12 drives the locking rod 2 to rotate to close the opening of the hook body 1, thereby realizing the automatic locking of the hook body 1; after the end of the locking rod 2 rotates into the locking groove 13, the reinforcement mechanism 5 fixes the end of the locking rod 2 to further improve the safety of the hook; after the lifting is completed and moved downward, the load-bearing plate 11 and the connecting ring 3 are no longer subjected to the pressure of the object to be lifted and the pulling force of the lifting machinery, the reinforcement mechanism 5 automatically releases the fixation of the end of the locking rod 2, and the reset assembly 4 drives the locking rod 2 to rotate in the opposite direction and reset, thereby realizing the automatic opening of the hook body 1, and the lifting machinery then lowers and moves the hook away to detach from the object to be lifted, without the need for operator intervention, thereby improving the automatic locking and unhooking efficiency of the hook.

[0034] like Figure 1 to Figure 2 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0035] The transmission member 12 is a winding rope, one end of which is connected to the load-bearing plate 11, and the other end of the transmission member 12 is fixed and wound around the rotating shaft of the locking rod 2. The locking rod 2 is fixed to its own rotating shaft, and the rotating shaft of the locking rod 2 is rotatably connected to the end of the hook body 1; the transmission member 12 is always in a taut state; when the load-bearing plate 11 descends, the transmission member 12 drives the locking rod 2 to rotate to close the opening on the hook body 1.

[0036] When the lifting machinery is lifting, the rope of the object to be lifted applies downward pressure to the load-bearing plate 11. The descent of the load-bearing plate 11 drives the winding rope to release the line, thereby causing the locking rod 2 and its rotating shaft to rotate, thereby realizing automatic locking of the opening of the hook body 1.

[0037] like Figure 1 to Figure 2 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0038] The reset assembly 4 includes a reset rod 41, a reset spring 42 and a torsion spring (not shown in the figure). The reset rod 41 is slidably connected to the bottom of the hook body 1 and fixed to the load-bearing plate 11. The reset spring 42 is arranged between the hook body 1 and the reset rod 41. The torsion spring is sleeved on the rotating shaft of the locking rod 2. The torsion spring is connected between the locking rod 2 and the hook body 1; when the torsion spring and the reset spring 42 are in a natural state, the opening on the hook body 1 is in an open state, and a distance is left between the load-bearing plate 11 and the bottom of the hook body 1; when the load-bearing plate 11 descends to be pressed against the bottom of the hook body 1, the end of the locking rod 2 rotates into the locking groove 13.

[0039] When the load-bearing plate 11 descends, the reset rod 41 drives the reset spring 42 to stretch, and the locking rod 2 drives the torsion spring to contract; after the lifting is completed and the load-bearing plate 11 is not under force, the reset spring 42 drives the load-bearing plate 11 and the reset rod 41 to reset upward, and the torsion spring drives the locking rod 2 and the transmission member 12 to reset, thereby improving the overall stability and convenience.

[0040] like Figure 2 , Figure 3 and Figure 5 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0041] The reinforcement mechanism 5 includes a lifting plate 51, a lifting spring 52, a connecting assembly 53 and a force transmission assembly 54; the lifting plate 51 is arranged at the top inside the connecting ring 3, and the lifting spring 52 has multiple parts and is arranged between the connecting ring 3 and the lifting plate 51; the connecting assembly 53 is used to fix the locking rod 2 in the locking groove 13 through the force transmission assembly 54 when the lifting plate 51 is moved upward by tension; the connecting assembly 53 is also used to release the fixed state of the locking rod 2 through the force transmission assembly 54 after the lifting plate 51 is not subjected to tension and moves downward.

[0042] When the lifting machinery is lifting, the rope of the lifting machinery pulls the lifting plate 51 upwards, the lifting spring 52 is compressed, and the rising of the lifting plate 51 causes the connecting component 53 to fix the end of the locking rod 2 in the locking groove 13 through the force transmission component 54, so as to improve the stability of the hook body 1 after the lifting is completed; after the lifting is completed, the lifting spring 52 drives the lifting plate 51 to descend and reset. At this time, the lifting plate 51 causes the connecting component 53 to cancel the fixation of the locking rod 2 through the force transmission component 54, so that the locking rod 2 is reversed and reset to open the hook body 1, thereby realizing the automatic locking and unlocking function of the hook.

[0043] Specifically, the weight of the hook body 1 itself and the related connection structure is not enough to compress the lifting spring 52.

[0044] like Figure 3 to Figure 4 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0045] The connecting assembly 53 includes a connecting spring 531, a connecting block 532, a moving block 533, a reset member 534 and an extrusion rod 535; connecting grooves 21 are provided on both sides of the bottom of the locking rod 2, and the connecting grooves 21 are opened toward the outside of the locking rod 2; the connecting spring 531 is arranged in the corresponding connecting groove 21, and the connecting block 532 is slidably connected in the corresponding connecting groove 21 and connected to the connecting spring 531; a limiting groove 22 is provided on the upper outer side of the connecting groove 21; receiving grooves 14 for connecting to the corresponding limiting grooves 22 are provided on both sides of the locking groove 13, and the moving block 533 is slidably connected in the corresponding receiving groove 14, and the reset member 534 is arranged on one side of the receiving groove 14 and is used to drive the moving block 533 to reset.

[0046] The bottom surface of the connecting block 532 is an inclined surface for the corresponding end of the moving block 533 to be squeezed; a lifting groove 15 is provided below the accommodating groove 14, and the extrusion rod 535 is slidably connected in the lifting groove 15; an extrusion groove 5331 for the extrusion rod 535 to be inserted is provided on the bottom surface of the moving block 533, and the extrusion groove 5331 is inclined toward one side of the locking rod 2. When the extrusion rod 535 squeezes the moving block 533 upward, the moving block 533 slides toward the limiting groove 22; the force transmission component 54 is used to drive the extrusion rod 535 to move upward when the lifting plate 51 is pulled upward.

[0047] When the lifting machinery is lifting, the rise of the lifting plate 51 causes the force transmission assembly 54 to drive the extrusion rod 535 to move upward, and the top of the extrusion rod 535 squeezes the inclined surface of the extrusion groove 5331, so that the moving block 533 moves toward the inside of the locking groove 13; at the same time, the descent of the load-bearing plate 11 causes the end of the locking rod 2 to rotate into the locking groove 13. At this time, the inclined surface at the bottom of the connecting block 532 is squeezed by the corresponding end of the moving block 533 to slide until the moving block 533 passes through the connecting block 532 and enters the limiting groove 22, thereby completing the automatic fixation of the locking rod 2. The lifting plate 51 and the load-bearing plate 11 are always subjected to tension and pressure during the lifting process, which improves the stability of the extrusion rod 535 and the moving block 533, thereby improving the fixing effect of the locking rod 2.

[0048] Furthermore, when the reset member 534 is in the natural state, the end of the moving block 533 is still located in the limiting groove 22, and the end of the moving block 533 located in the limiting groove 22 is hemispherical.

[0049] After the lifting is completed and lowered, the load-bearing plate 11 and the lifting plate 51 are reset. At this time, the force transmission component 54 drives the extrusion rod 535 to descend, and the reset member 534 drives the moving block 533 to slide in the direction away from the limiting groove 22 until the non-hemispherical shape of the moving block 533 is separated from the limiting groove 22. At this time, the torsion spring drives the locking rod 2 to reverse and reset, and the connecting block 532 squeezes the hemispherical end of the moving block 533, so that the moving block 533 moves toward the inside of the accommodating groove 14 again. Until the connecting block 532 passes the moving block 533, the locking rod 2 and the moving block 533 are both reset, with high transmission efficiency and automation effect.

[0050] like Figure 4 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0051] Slide blocks 24 are fixed on both sides of the connection block 532 , and slide grooves 23 are provided on both sides of the connection groove 21 , in which the slide blocks 24 are slidably disposed.

[0052] When the connecting block 532 slides in the connecting groove 21 , the sliding blocks 24 on both sides of the connecting block 532 slide in the corresponding sliding grooves 23 , thereby improving the sliding stability of the connecting block 532 .

[0053] like Figure 3 and Figure 5 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0054] The force transmission component 54 includes a lifting plate 541, a pull-down spring 542 and a force transmission rope 543. The bottom of the two lifting grooves 15 is provided with the same lifting groove 16. The lifting plate 541 is slidably arranged in the lifting groove 16. The pull-down spring 542 has multiple pull-down springs and is arranged below the lifting plate 541; the force transmission rope 543 is connected between the lifting plate 51 and the lifting plate 541; when the pull-down spring 542 is in a natural state, the extrusion rod 535 is in a state of not squeezing the moving block 533; the force transmission rope 543 is always in a taut state.

[0055] When the lifting machinery is lifting to raise the lifting plate 51, the lifting plate 51 drives the lifting plate 541 to rise through the force transmission rope 543, and the lifting plate 541 drives the two squeezing rods 535 to rise; after the lifting is completed, when the lifting plate 51 is lowered, the retraction force of the pull-down spring 542 drives the lifting plate 541 and the force transmission rope 543 to descend, so that the two squeezing rods 535 descend and reset, thereby improving the transmission efficiency of the force transmission component 54 to the connecting component 53.

[0056] like Figure 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0057] The reset member 534 includes a reset block 5341 and a telescopic spring 5342 . The reset block 5341 is fixed to one side of the moving block 533 , and the telescopic spring 5342 is connected between the reset block 5341 and the inner wall of the accommodating groove 14 .

[0058] When the moving block 533 moves, the resetting block 5341 drives the telescopic spring 5342 to retract, so that the telescopic spring 5342 can reset the moving block 533 when no force is applied.

[0059] like Figure 5 As shown, the present invention provides a specific implementation method based on the above implementation method as follows:

[0060] A plurality of groups of vertical telescopic rods 511 are arranged between the connecting ring 3 and the lifting plate 51 .

[0061] The provision of multiple groups of vertical telescopic rods 511 can improve the lifting stability of the lifting plate 51, thereby increasing its service life.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0063] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0064] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

Claims

1. An automatic locking unhooking hook, comprising a hook body (1), characterized in that: The hook body (1) further comprises a locking rod (2) hingedly connected to one end of the hook body (1) and a connecting ring (3) arranged at the other end of the hook body (1); a load-bearing plate (11) is slidably raised and lowered on the inner bottom wall of the hook body (1); a transmission member (12) is arranged between the load-bearing plate (11) and the locking rod (2); the transmission member (12) is used to drive the locking rod (2) to rotate to close the opening on the hook body (1) when the load-bearing plate (11) is subjected to a downward force; the hook body (1) is provided with a transmission member (12) for driving the locking rod (2) to rotate to close the opening on the hook body (1) The load-bearing plate (11) and the resetting assembly (4) for resetting the locking rod (2); the inner side of the hook body (1) is provided with a locking groove (13) for the end of the locking rod (2) to rotate into, and a reinforcing mechanism (5) is arranged in the locking groove (13). The reinforcing mechanism (5) is used to fix the end of the locking rod (2) when the rope pulls up the connecting ring (3), and the reinforcing mechanism (5) is also used to release the fixation of the end of the locking rod (2) after the connecting ring (3) is no longer subjected to force.

2. An automatic locking unhooking hook as claimed in claim 1, characterized in that: The transmission member (12) is a winding rope, one end of which is connected to the load-bearing plate (11), and the other end of which is fixed to and wound around the rotating shaft of the locking rod (2). The locking rod (2) is fixed to its own rotating shaft, and the rotating shaft of the locking rod (2) is rotatably connected to the end of the hook body (1); the transmission member (12) is always in a taut state; when the load-bearing plate (11) descends, the transmission member (12) drives the locking rod (2) to rotate to close the opening on the hook body (1).

3. An automatic locking unhooking hook as claimed in claim 2, characterized in that: The reset assembly (4) comprises a reset rod (41), a reset spring (42) and a torsion spring. The reset rod (41) is slidably connected to the bottom of the hook body (1) and is fixed to the load-bearing plate (11). The reset spring (42) is arranged between the hook body (1) and the reset rod (41). The torsion spring is sleeved on the rotating shaft of the locking rod (2). The torsion spring is connected between the locking rod (2) and the hook body (1). When the torsion spring and the reset spring (42) are in a natural state, the opening on the hook body (1) is in an open state, and a distance is left between the load-bearing plate (11) and the bottom of the hook body (1). When the load-bearing plate (11) is lowered to be pressed against the bottom of the hook body (1), the end of the locking rod (2) rotates into the locking groove (13).

4. The automatic locking unhooking hook according to claim 1, characterized in that: The reinforcement mechanism (5) comprises a lifting plate (51), a lifting spring (52), a connecting assembly (53) and a force transmission assembly (54); the lifting plate (51) is arranged at the top of the connecting ring (3), and the lifting spring (52) has a plurality of lifting springs (52) and is arranged between the connecting ring (3) and the lifting plate (51); the connecting assembly (53) is used to fix the locking rod (2) in the locking groove (13) through the force transmission assembly (54) when the lifting plate (51) is subjected to a pulling force and moves upward; the connecting assembly (53) is also used to release the fixed state of the locking rod (2) through the force transmission assembly (54) after the lifting plate (51) is not subjected to a pulling force and moves downward.

5. An automatic locking unhooking hook as claimed in claim 4, characterized in that: The connecting assembly (53) comprises a connecting spring (531), a connecting block (532), a moving block (533), a reset member (534) and an extrusion rod (535); connecting grooves (21) are provided on both sides of the bottom of the locking rod (2), and the connecting grooves (21) are opened toward the outside of the locking rod (2); the connecting spring (531) is arranged in the corresponding connecting groove (21), and the connecting block (532) is slidably connected in the corresponding connecting groove (21) and connected to the connecting spring (531); a limiting groove (22) is provided on the upper side of the outer side of the connecting groove (21); receiving grooves (14) for connecting to the corresponding limiting grooves (22) are provided on both sides of the locking groove (13), the moving block (533) is slidably connected in the corresponding receiving groove (14), and the reset member (534) is provided on both sides of the locking groove (13). ) is arranged on one side of the accommodating groove (14) and is used to drive the moving block (533) to reset; the bottom surface of the connecting block (532) is an inclined surface for extrusion of the corresponding end of the moving block (533); a lifting groove (15) is provided below the accommodating groove (14), and the extrusion rod (535) is slidably connected in the lifting groove (15); the bottom surface of the moving block (533) is provided with an extrusion groove (5331) for the extrusion rod (535) to be inserted, and the extrusion groove (5331) is inclined toward one side of the locking rod (2), and when the extrusion rod (535) squeezes the moving block (533) upward, the moving block (533) slides toward the limiting groove (22); the force transmission component (54) is used to drive the extrusion rod (535) to move upward when the lifting plate (51) is pulled upward.

6. An automatic locking unhooking hook as claimed in claim 5, characterized in that: Slide blocks (24) are fixed on both sides of the connection block (532), slide grooves (23) are provided on both sides of the connection groove (21), and the slide blocks (24) are slidably arranged in the slide grooves (23).

7. An automatic locking unhooking hook as claimed in claim 5, characterized in that: When the reset member (534) is in a natural state, the end of the moving block (533) is still located in the limiting groove (22), and the end of the moving block (533) located in the limiting groove (22) is hemispherical.

8. An automatic locking unhooking hook as claimed in claim 5, characterized in that: The force transmission component (54) includes a lifting plate (541), a pull-down spring (542) and a force transmission rope (543). The bottom of the two lifting grooves (15) is provided with a same lifting groove (16). The lifting plate (541) is slidably arranged in the lifting groove (16). The pull-down spring (542) has a plurality of springs and is arranged below the lifting plate (541); the force transmission rope (543) is connected between the lifting plate (51) and the lifting plate (541); when the pull-down spring (542) is in a natural state, the squeezing rod (535) is in a state of not squeezing the moving block (533); the force transmission rope (543) is always in a taut state.

9. An automatic locking unhooking hook as claimed in claim 5, characterized in that: The reset member (534) comprises a reset block (5341) and a telescopic spring (5342); the reset block (5341) is fixed on one side of the moving block (533); and the telescopic spring (5342) is connected between the reset block (5341) and the inner wall of the accommodating groove (14).

10. An automatic locking unhooking hook as claimed in claim 4, characterized in that: A plurality of groups of vertical telescopic rods (511) are arranged between the connecting ring (3) and the lifting plate (51).

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