Self-locking unhooking mechanism

Abstract

The utility model relates to the technical field of heavy object lifting and heavy load traction equipment, in particular to a self-locking unhooking mechanism. The unhooking device comprises a supporting plate and an unhooking hydraulic cylinder arranged on the supporting plate, a piston rod of the unhooking hydraulic cylinder downwards and movably penetrates through the supporting plate to be matched with a mechanical self-locking structure arranged at the bottom of the supporting plate, the mechanical self-locking structure comprises a fixing base installed at the bottom of the supporting plate, and a clamping groove is formed in the bottom of the fixing base in the length direction of the fixing base. And a piston rod of the unhooking hydraulic cylinder penetrates through the fixed seat and is connected with a linkage seat arranged in a clamping groove of the fixed seat. The automatic unhooking device is convenient to operate and capable of achieving the automatic unhooking function so as to reduce manual intervention and operation difficulty and improve operation efficiency and safety, hooking and unhooking actions are achieved through the unhooking hydraulic cylinder, and the whole unhooking process is more stable and safer by combining double guarantees of a mechanical self-locking structure and an auxiliary locking structure; the stable performance can be kept in various complex environments, and the problems in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy object lifting and heavy load pulling equipment, in particular to a self-locking hook releasing mechanism. Background Art

[0002] In heavy object lifting and heavy load pulling operations, the stability and safety of the hooking and unhooking processes are crucial. Due to problems such as simple design, complex operation, insufficient stability, and poor safety of traditional unhooking structures, they often cannot meet the requirements of modern industry for high efficiency, safety, and reliability.

[0003] With the continuous development of industrial technology, the application of hydraulic transmission is becoming more and more extensive in various fields. How to develop an unhooking structure with self-locking function, high automation, and remote control using hydraulic transmission has become an urgent need in the industry. Summary of the Utility Model

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a self-locking hook releasing mechanism, which has a reasonable structure design and is convenient to operate. It can realize the function of automatic hook release to reduce manual intervention and operation difficulty, improve operation efficiency and safety. The hooking and unhooking actions are realized through an unhooking hydraulic cylinder. With the double guarantee of a mechanical self-locking structure and an auxiliary locking structure, the entire unhooking process is more stable and safe, and can maintain stable performance in various complex environments, solving the problems existing in the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0006] A self-locking hook releasing mechanism includes a support plate and an unhooking hydraulic cylinder arranged on the support plate. The piston rod of the unhooking hydraulic cylinder moves downward through the support plate and cooperates with a mechanical self-locking structure arranged at the bottom of the support plate. The mechanical self-locking structure includes a fixed seat installed at the bottom of the support plate. A slot is opened along the length direction at the bottom of the fixed seat. The piston rod of the unhooking hydraulic cylinder passes through the fixed seat and is connected with a linkage seat arranged in the slot of the fixed seat. A first chute for the linkage seat to slide up and down is provided on the fixed seat and the support plate corresponding to the position of the piston rod of the unhooking hydraulic cylinder. A linkage groove is opened at the bottom of the linkage seat and is opposite to the slot. Hinged parts are symmetrically arranged in the slots on the front and rear sides of the linkage seat respectively. The inner ends of the two hinged parts are movably hinged on a first pin shaft in the linkage groove. A second chute for the hinged parts to slide up and down is provided on the fixed seat corresponding to the position of the piston rod of the unhooking hydraulic cylinder. Claws are symmetrically arranged in the slots corresponding to the outer ends of the two hinged parts respectively. Each claw is movably connected with the fixed seat through a second pin shaft. Each claw is hinged to the outer end of the corresponding side hinged part through a hinge seat arranged on the claw; A catch head that cooperates with the two claws is arranged in the slot. The bottom of the catch head extends downward out of the slot and is connected with a mounting plate horizontally arranged below the fixed seat.

[0007] Optionally, both the inner and outer ends of the front hinge are straight plate-shaped, and the hinge seat cooperating with the front hinge is a U-shaped hinge seat; both the inner and outer ends of the rear hinge are U-shaped clip-shaped, and the hinge seat cooperating with the rear hinge is a straight plate-shaped hinge seat. The U-shaped clip-shaped inner end of the rear hinge is movably clamped on the straight plate-shaped inner end of the front hinge.

[0008] Optionally, displacement grooves are symmetrically opened in the middle parts of the left and right side walls of the fixed seat along their vertical directions. The left and right ends of the first pin shaft respectively extend into the displacement grooves on the corresponding side. On the right side wall of the fixed seat at the upper and lower ends of the corresponding displacement grooves, photoelectric switch brackets are respectively provided. Photoelectric switches are provided on each photoelectric switch bracket, and a stud cooperating with the photoelectric switch is provided at the right end of the first pin shaft.

[0009] Optionally, an auxiliary locking structure is further included and is arranged on the right side wall of the fixed seat. The auxiliary locking structure includes a safety cylinder arranged on one side of the fixed seat. The safety cylinder is arranged on the side wall of the fixed seat through a cylinder bracket, and the piston rod of the safety cylinder horizontally penetrates through the fixed seat and the chuck in sequence.

[0010] Optionally, magnetic switches are respectively arranged on the left and right sides of the cylinder block housing of the safety cylinder, and a magnetic ring cooperating with the magnetic switch is sleeved on the piston rod of the safety cylinder at the inner end side.

[0011] Optionally, the cylinder block housing of the safety cylinder is an aluminum alloy housing.

[0012] Optionally, a magnetostrictive displacement sensor is arranged on the top cover of the hook release hydraulic cylinder.

[0013] Optionally, the bottom surfaces of the hinges tightly abut against the chucks.

[0014] The utility model adopts the above technical solutions and has the following advantages: The structure design is reasonable, the operation is convenient, the function of automatic hook release can be realized, so as to reduce manual intervention and operation difficulty, improve the operation efficiency and safety. The hook and hook release actions are realized through the hook release hydraulic cylinder. With the double guarantee of the mechanical self-locking structure and the auxiliary locking structure, the whole hook release process is more stable and safe, and can maintain stable performance in various complex environments. Moreover, by monitoring the working state of the hook release mechanism in real time and feeding back the information to the console, remote monitoring and control can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 is a three-dimensional structural schematic diagram of the fixed seat;

[0017] Figure 3Schematic three-dimensional structure diagram of the hinge piece, claw, and hinge seat;

[0018] Figure 4 Schematic three-dimensional structure diagram of the hook-release hydraulic cylinder and linkage seat;

[0019] Figure 5 Schematic three-dimensional structure diagram of the chuck and mounting plate;

[0020] In the figure, 1, support plate; 2, hook-release hydraulic cylinder; 3, fixed seat; 4, card slot; 5, linkage seat; 6, first chute; 7, linkage groove; 8, hinge piece; 9, first pin shaft; 10, second chute; 11, claw; 12, second pin shaft; 13, hinge seat; 14, chuck; 15, mounting plate; 16, displacement slot; 17, photoelectric switch bracket; 18, photoelectric switch; 19, column head; 20, safety cylinder; 21, cylinder bracket; 22, magnetic switch; 23, magnetostrictive displacement sensor. Specific embodiments

[0021] To clearly illustrate the technical features of this solution, the present utility model will be elaborated in detail below through specific embodiments in conjunction with the accompanying drawings. In the following description, many specific details are set forth in order to fully understand the present application. However, the present application may be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0022] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0023] In this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0024] As Figures 1-5 shown, in this embodiment, a self-locking hook release mechanism includes a support plate 1 and a hook release hydraulic cylinder 2 arranged on the support plate 1. The piston rod of the hook release hydraulic cylinder 2 moves downward through the support plate 1 and cooperates with a mechanical self-locking structure arranged at the bottom of the support plate 1. The mechanical self-locking structure includes a fixed seat 3 installed at the bottom of the support plate 1. A card slot 4 is opened along the length direction at the bottom of the fixed seat 3. The piston rod of the hook release hydraulic cylinder 2 passes through the fixed seat 3 and is connected to a linkage seat 5 arranged in the card slot 4 of the fixed seat 3. A first sliding slot 6 for the linkage seat 5 to slide up and down is provided on the fixed seat 3 and the support plate 1 corresponding to the position of the piston rod of the hook release hydraulic cylinder 2. A linkage slot 7 facing the card slot 4 is opened at the bottom of the linkage seat 5. Hinged parts 8 are symmetrically arranged in the card slot 4 on both the front and rear sides of the linkage seat 5. The inner ends of the two hinged parts 8 are both movably hinged on a first pin shaft 9 in the linkage slot 7. A second sliding slot 10 for the hinged parts 8 to slide up and down is provided on the fixed seat 3 corresponding to the position of the piston rod of the hook release hydraulic cylinder 2. Claw 11 are symmetrically arranged in the card slot 4 corresponding to the outer ends of the two hinged parts 8. Each claw 11 is movably connected to the fixed seat 3 through a second pin shaft 12. Each claw 11 is hinged to the outer end of the corresponding side hinged part 8 through a hinge seat 13 arranged on the claw 11; A card head 14 cooperating with the two claws 11 is arranged in the card slot 4. The bottom of the card head 14 extends downward out of the card slot 4 and is connected to a mounting plate 15 horizontally arranged below the fixed seat 3.

[0025] Optionally, both the inner and outer ends of the front hinged part 8 are straight plate-shaped, and the hinge seat 13 cooperating with the front hinged part 8 is a U-shaped hinge seat; both the inner and outer ends of the rear hinged part 8 are U-shaped clip-shaped, and the hinge seat 13 cooperating with the rear hinged part 8 is a straight plate-shaped hinge seat. The U-shaped clip-shaped inner end of the rear hinged part 8 is movably clamped on the straight plate-shaped inner end of the front hinged part 8.

[0026] Optionally, displacement grooves 16 are symmetrically formed in the middle parts of the left and right side walls of the fixed seat 3 along the vertical direction thereof. The left and right ends of the first pin shaft 9 respectively extend into the displacement grooves 16 on the corresponding side. Photoelectric switch brackets 17 are respectively provided on the right side wall of the fixed seat 3 at the upper and lower ends of the corresponding displacement grooves 16. Photoelectric switches 18 are provided on each of the photoelectric switch brackets 17. A stud 19 cooperating with the photoelectric switch 18 is provided at the right end of the first pin shaft 9. When the piston rod of the unhooking hydraulic cylinder 2 is pulled upward, the linkage seat 5 drives the first pin shaft 9 to move upward in the displacement grooves 16 on both sides of the fixed seat 3. When the stud 19 on the first pin shaft 9 contacts the upper photoelectric switch 18, the photoelectric switch 18 transmits a signal to the control device, thereby controlling the unhooking hydraulic cylinder 2 to stop. At this time, the mechanical self-locking structure is in an open state; conversely, when the stud 19 on the first pin shaft 9 contacts the lower photoelectric switch 18, the photoelectric switch 18 transmits a signal to the control device, thereby controlling the unhooking hydraulic cylinder 2 to stop. At this time, the mechanical self-locking structure is in a locked state.

[0027] Optionally, an auxiliary locking structure is further provided on the right side wall of the fixed seat 3. The auxiliary locking structure includes a safety cylinder 20 provided on one side of the fixed seat 3. The safety cylinder 20 is provided on the side wall of the fixed seat 3 through a cylinder bracket 21. The piston rod of the safety cylinder 20 sequentially penetrates through the fixed seat 3 and the chuck 14 horizontally. During the hooking and unhooking processes, the piston rod of the safety cylinder 20 is withdrawn from the fixed seat 3 and the chuck 14 to ensure the smoothness of the hooking and unhooking actions. After the hooking is completed, the safety cylinder 20 reinserts the piston rod into the fixed seat 3 and the chuck 14, thereby performing auxiliary locking on the chuck 14 and providing double protection for the entire system. Even in the event of a failure of the unhooking hydraulic cylinder 2 or in extreme cases, the safety cylinder 20 can effectively prevent the occurrence of unhooking accidents.

[0028] Optionally, magnetic switches 22 are respectively provided on the left and right sides of the cylinder seat housing of the safety cylinder 20. A magnetic ring cooperating with the magnetic switches 22 is sleeved on the piston rod of the safety cylinder 20 at the inner end side. Through the two magnetic switches 22 and the magnetic ring on the piston rod, the real-time position of the piston rod of the safety cylinder 20 is monitored to ensure that the piston rod of the safety cylinder 20 is fully extended or retracted, and a signal is fed back to the control device in a timely manner.

[0029] Optionally, the cylinder seat housing of the safety cylinder 20 is an aluminum alloy housing. The aluminum alloy housing is used to prevent magnetic interference and ensure the normal operation of the magnetic switches 22.

[0030] Optionally, a magnetostrictive displacement sensor 23 is provided on the top cover of the unhooking hydraulic cylinder 2. The magnetostrictive displacement sensor 23 is used to feedback the position of the piston rod of the unhooking hydraulic cylinder 2 in real time, realizing remote monitoring of the working states of each part of the mechanical self-locking structure.

[0031] Optionally, the bottom surface of each of the hinge members 8 tightly abuts against the chuck 14. When the two hinge members 8 are in a horizontal state, they abut against the chuck 14, which can prevent the chuck 14 from wobbling within the two jaws 11 under the support of the unhooking hydraulic cylinder 2, achieving a firm locking of the chuck 14, thereby firmly locking the target object.

[0032] When unhooking is required, the control device controls the unhooking hydraulic cylinder 2 to start, causing its piston rod to move in a retracting manner, thereby generating an upward pulling force. The piston rod of the unhooking hydraulic cylinder 2 pulls the linkage seat 5 upward, and the linkage seat 5 slides upward within the first chute 6 formed by the fixed seat 3 and the support plate 1, ensuring that it always moves along its vertical direction. As the linkage seat 5 moves upward, it further pulls the two hinge members 8 that were originally in a horizontal state upward. The two hinge members 8 respectively pull the jaws 11 through the hinge seats 13 on the same side, causing them to flip outward along the corresponding second pin shafts 12 on one side, so that the two originally closed jaws 11 are in an open state. As a result, the chuck 14 clamped between the two jaws 11 slides downward under the action of the target object and its own gravity, thus completing the unhooking. It has a reasonable structural design and is easy to operate. It can achieve the function of automatic unhooking, reducing manual intervention and operation difficulty, improving work efficiency and safety. The hook and unhook actions are realized through the unhooking hydraulic cylinder. With the double guarantee of the mechanical self-locking structure and the auxiliary locking structure, the entire unhooking process is more stable and safe, and it can maintain stable performance in various complex environments. Moreover, by monitoring the working state of the unhooking mechanism in real time and feeding back the information to the console, remote monitoring and control are achieved, solving the problems existing in the prior art.

[0033] 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 foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention; for those skilled in the art of this technology, any alternative improvement or transformation made to the embodiments of the present invention falls within the protection scope of the present invention.

[0034] Those parts not detailed in the present invention are all well-known technologies to those skilled in the art of this technology.

Claims

1. A self-locking unhooking mechanism, characterized in that: The invention comprises a support plate and a decoupling hydraulic cylinder arranged on the support plate, the piston rod of the decoupling hydraulic cylinder moves downward through the support plate and cooperates with a mechanical self-locking structure arranged at the bottom of the support plate, the mechanical self-locking structure comprises a fixed seat installed at the bottom of the support plate, a card slot is provided at the bottom of the fixed seat along its length direction, the piston rod of the decoupling hydraulic cylinder passes through the fixed seat and is connected with a linkage seat arranged in the card slot of the fixed seat, a first slide groove for the linkage seat to slide up and down is provided on the fixed seat and the support plate corresponding to the position of the piston rod of the decoupling hydraulic cylinder, a linkage groove directly opposite to the card slot is provided at the bottom of the linkage seat, and the card slots on the front and rear sides of the linkage seat are provided. Hinged parts are symmetrically arranged in the groove, and the inner ends of the two hinged parts are movably hinged on the first pin shaft on the linkage groove. A second sliding groove for the hinged parts to slide up and down is arranged on the fixed seat corresponding to the position of the piston rod of the unhooking hydraulic cylinder, and claws are symmetrically arranged in the slots corresponding to the outer ends of the two hinged parts. Each claw is movably connected to the fixed seat through the second pin shaft, and each claw is hinged to the outer end of the hinged part on the corresponding side through the hinge seat arranged on the claw; a clamping head matching the two claws is arranged in the slot, and the bottom of the clamping head extends downward from the slot and is connected to the mounting plate horizontally arranged below the fixed seat.

2. A self-locking unhooking mechanism according to claim 1, characterized in that: The inner and outer ends of the front hinge are both straight plate-shaped, and the hinge seat matched with the front hinge is a U-shaped hinge seat; the inner and outer ends of the rear hinge are both U-shaped clip-shaped, and the hinge seat matched with the rear hinge is a straight plate-shaped hinge seat, and the inner end of the U-shaped clip of the rear hinge is movably clamped on the inner end of the straight plate of the front hinge.

3. A self-locking unhooking mechanism according to claim 1 or 2, characterized in that: Displacement grooves are symmetrically opened in the middle of the left and right side walls of the fixing seat along the vertical direction, and the left and right ends of the first pin shaft extend into the displacement grooves on the corresponding side respectively. Photoelectric switch brackets are respectively provided on the right side wall of the fixing seat at the upper and lower ends of the corresponding displacement grooves. A photoelectric switch is provided on each photoelectric switch bracket, and a column head matching the photoelectric switch is provided at the right end of the first pin shaft.

4. A self-locking unhooking mechanism according to claim 1 or 2, characterized in that: It also includes an auxiliary locking structure arranged on the right side wall of the fixed seat, and the auxiliary locking structure includes a safety cylinder arranged on one side of the fixed seat. The safety cylinder is arranged on the side wall of the fixed seat through a cylinder bracket, and the piston rod of the safety cylinder horizontally penetrates the fixed seat and the clamping head in sequence.

5. A self-locking unhooking mechanism according to claim 4, characterized in that: Magnetic switches are respectively arranged on the left and right sides of the cylinder seat shell of the safety cylinder, and a magnetic ring matched with the magnetic switch is sleeved on the piston rod of the safety cylinder at one inner end.

6. A self-locking unhooking mechanism according to claim 4, characterized in that: The cylinder base shell of the safety cylinder is an aluminum alloy shell.

7. A self-locking unhooking mechanism according to claim 1, characterized in that: A magnetostrictive displacement sensor is arranged on the top cover of the unhooking hydraulic cylinder.

8. A self-locking unhooking mechanism according to claim 1, characterized in that: The bottom surface of each hinged part is tightly against the clamping head.

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