A kind of unpowered automatic hooking and unhooking lifting appliance and hanger

Abstract

The utility model provides an unpowered automatic grab hook unhooking lifting appliance and hanging frame, the lifting appliance includes hoisting sliding block assembly, unpowered lifting hook and self -locking guide mechanism, the unpowered lifting hook includes first rotation axis, inner connecting rod, outer connecting rod, inner claw, outer claw and second rotation axis, installs the locating counterweight on the second rotation axis, rotates and is equipped with the self -locking hook on the first rotation axis, the hook part of self -locking hook is stuck on the second rotation axis, and the side of hook part is connected with the bottom of self -locking guide mechanism through traction assembly and rotates, in the utility model, first press the sling through the locating counterweight and make the rope convex, when self -locking guide mechanism is in the limited position, and hoisting sliding block assembly moves from below to the upper limit position, traction assembly drives self -locking hook and separates from the second rotation axis, and the inner claw and outer claw realize the action of grabbing hook, when self -locking guide mechanism is in the limited position, and hoisting sliding block assembly moves from the upper limit position to below, traction assembly drives self -locking hook and hooks the second rotation axis, and the inner claw and outer claw realize the action of unhooking. The whole process, does not need artificial or other external force and realizes automatic grab hook unhooking to improve the efficiency and save the cost.

Description

Technical Field

[0001] This invention relates to the field of hoisting equipment technology, and in particular to a non-powered automatic hook grabber and unhook lifting device and lifting frame. Background Technology

[0002] Lifting operations are quite frequent at domestic docks. The unhooking methods used in lifting operations are mainly divided into pneumatic unhooking and manual unhooking, which relies entirely on manual handling.

[0003] When using the manual method, workers need to climb above the object to assist in hooking it. After the object is in place, workers still need to climb up again to manually release it. Because the objects being hoisted are quite high, the frequent climbing up and down by workers increases the risk of falls and injuries from the hoisting equipment, resulting in slow hoisting speed, high risk, and high costs.

[0004] However, when using pneumatic unhooking, workers still need to climb to complete the auxiliary hooking operation, which poses a risk of injury. Automatic unhooking operations also consume a large amount of nitrogen, requiring frequent replenishment and replacement, which increases the intensity of dockworks and hoisting costs. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a non-powered automatic hook grabbing and unhooking lifting device and frame, which can achieve automatic hook grabbing and unhooking without manual or other external force, thereby improving efficiency and saving costs.

[0006] In a first aspect, the present invention provides a non-powered automatic hook grabber and unhook lifting device, including a lifting slider assembly, a non-powered hook rotatably connected to the bottom of the lifting slider assembly, and a self-locking guide mechanism fixedly connected to one side of the top of the lifting slider assembly;

[0007] The non-powered hook includes a first rotating shaft, an inner connecting rod and an outer connecting rod rotatably connected to the first rotating shaft, an inner claw rotatably connected to the other end of the inner connecting rod, an outer claw rotatably connected to the other end of the outer connecting rod, and a second rotating shaft rotatably connected to the middle of the outer claw and the inner claw. The first rotating shaft is installed at the bottom of the lifting slider assembly.

[0008] A positioning counterweight is installed on the second rotating shaft. The positioning counterweight has a clearance groove, and the outer claw and the inner claw are located in the clearance groove.

[0009] A self-locking hook is rotatably mounted on the first rotating shaft. The hook portion of the self-locking hook is engaged on the second rotating shaft, and the side of the hook portion is rotatably connected to the bottom of the self-locking guide mechanism through a traction assembly.

[0010] Furthermore, the self-locking guide mechanism includes a housing, a sliding element that passes through the top of the housing and can slide up and down, a gravity swing rod that is rotatably mounted on the sliding element, and a baffle mounted on the outer claw.

[0011] The top of the sliding element is fixedly connected to the top of the lifting slider assembly, and one side of the bottom of the housing is in rolling contact with the baffle, while the other side is rotatably connected to the traction assembly.

[0012] The outer shell is provided with a guide limiting block inside, and the bottom of the guide limiting block is provided with a limiting notch. When the bottom of the gravity swing arm is located in the limiting notch, and the lifting slider assembly moves from the bottom to the upper limit position, the traction assembly drives the self-locking hook to disengage from the second rotating shaft, and the inner claw and the outer claw realize the hook grabbing action.

[0013] When the bottom of the gravity swing arm is located in the limiting notch, and the lifting slider assembly moves downward from the upper limit position, the traction assembly drives the self-locking hook to hook the second rotating shaft, and the inner claw and the outer claw realize the unhooking action.

[0014] Furthermore, the top of the guide limiting block is tilted to the lower left, and the right end of the top is offset to the right of the center line of the outer shell;

[0015] The limiting notch is L-shaped, located on the left side of the outer shell and inclined downward to the left;

[0016] The bottom of the outer casing is provided with a left guide groove and a right guide groove. The connection between the left guide groove and the right guide groove points to the left side of the hook of the limiting notch. The end of the notch wall of the limiting notch is located on the left side of the bottom of the left guide groove.

[0017] Furthermore, a stop is provided on the right side wall of the outer casing, and the stop is located above the right groove wall of the right guide groove.

[0018] Furthermore, the gravity swing arm includes a swing arm, a swing axis disposed at the top of the swing arm, and a gravity axis disposed at the bottom of the swing arm;

[0019] The swing axis and the gravity axis are respectively located on two surfaces of the swing arm. The swing axis is rotatably mounted on the sliding element, and the gravity axis slides inside the housing.

[0020] Furthermore, the sliding element includes a mounting plate fixedly connected to the top of the lifting slider assembly, a sliding guide post disposed on the mounting plate and passing through the top of the housing, and a lifting plate connected to the sliding guide post, wherein the swing shaft is rotatably connected to the lifting plate.

[0021] Furthermore, the bottom of the outer casing is provided with rollers, the position of which corresponds to the position of the baffle.

[0022] Furthermore, the traction assembly includes at least two connecting pieces that are rotatably connected to each other, with the connecting piece at the front end rotatably connected to the bottom of the housing and the connecting piece at the rear end rotatably connected to the side of the self-locking hook.

[0023] Furthermore, the lifting slider assembly includes an upper lifting plate, a connecting shaft disposed on the upper lifting plate, and a lower lifting plate slidably connected to the connecting shaft, the bottom of the lower lifting plate being fixedly connected to the first rotating shaft.

[0024] Secondly, the present invention provides a lifting frame, including a slewing tower mounted on a crane, a lifting platform located below and connected to the slewing tower, and a plurality of the aforementioned non-powered automatic grab and unload lifting devices, the top of each of the non-powered automatic grab and unload lifting devices being connected to the bottom of the lifting platform via a chain, and all the chains being symmetrically distributed on the lifting platform.

[0025] Compared to existing technologies, in this invention, the rope is first raised by a positioning counterweight. When the self-locking guide mechanism is in a limited position and the lifting slider assembly moves from the lower to the upper limit position, the traction component drives the self-locking hook to disengage from the second rotating shaft, and the inner and outer claws perform a hook-grabbing action. When the self-locking guide mechanism is in a limited position and the lifting slider assembly moves downward from the upper limit position, the traction component drives the self-locking hook to hook onto the second rotating shaft, and the inner and outer claws perform a hook-unhooking action. The entire process achieves automatic hook-grabbing and unhooking without manual intervention or other external force, thereby improving efficiency and saving costs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the hanger in this invention;

[0027] Figure 2 for Figure 1 A schematic diagram of a non-powered automatic grab and unhook lifting device pressing down on a load.

[0028] Figure 3 for Figure 2 A schematic diagram of the structure of a non-powered automatic grab and unhook lifting device for removing the positioning counterweight;

[0029] Figure 4 for Figure 3 Exploded view of the self-locking guide mechanism;

[0030] Figure 5 This is a schematic diagram of the hook-and-unhook action flow in this invention (from left to right, from top to bottom).

[0031] Explanation of key component symbols:

[0032] Non-powered automatic grab and unhook lifting device 300 Lifting slider assembly 30 Hanging board 301 Connecting shaft 302 Lower plate 303 Non-powered hook 31 First pivot 311 inner link 312 outer link 313 inner claw 314 outer claw 315 Second pivot 316 Positioning counterweight 317 Avoidance slot 3171 Self-locking guiding mechanism 32 shell 321 Left guide groove 3211 Right guide groove 3212 sliding element 322 Mounting plate 3221 Sliding guide post 3222 lifting board 3223 Gravity pendulum 323 Swing arm 3231 Swing axis 3232 Gravity axis 3233 baffle 324 Guide limit block 325 Limiting gap 3251 roller 326 Self-locking hook 33 Traction components 34 chain 400 Hanging bag 500

[0033] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0034] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0035] Please see Figure 1 An embodiment of the present invention provides a lifting frame including a slewing tower 100 mounted on a crane, a lifting platform 200 located below and connected to the slewing tower 100, and a plurality of non-powered automatic grab and unload lifting devices 300. The top of each of the non-powered automatic grab and unload lifting devices 300 is connected to the bottom of the lifting platform 200 by a chain 400, and all the chains 400 are symmetrically distributed on the lifting platform 200.

[0036] It should be noted that, in this application, the lifting platform 200 has multiple attachment points, and the lifting points of the lifting device can be changed according to the different sizes of the lifting bags 500 to meet the lifting requirements. In this application, the lifting device is a non-powered hook, which can realize automatic grabbing and unhooking. At the same time, the overall lifting frame can lift a large number of lifting bags 500 at a time, and the lifting weight can reach 30T-50T, which greatly improves the efficiency of lifting operations and reduces operating costs.

[0037] Please see Figures 2 to 5 The non-powered automatic hook and unhook lifting device 300 includes a lifting slider assembly 30, a non-powered hook 31 rotatably connected to the bottom of the lifting slider assembly 30, and a self-locking guide mechanism 32 fixedly connected to one side of the top of the lifting slider assembly 30.

[0038] The non-powered hook 31 includes a first rotating shaft 311, an inner connecting rod 312 and an outer connecting rod 313 rotatably connected to the first rotating shaft 311, an inner jaw 314 rotatably connected to the other end of the inner connecting rod 312, an outer jaw 315 rotatably connected to the other end of the outer connecting rod 313, and a second rotating shaft 316 rotatably connected to the middle of the outer jaw 315 and the inner jaw 314. The first rotating shaft 311 is installed at the bottom of the lifting slider assembly 30.

[0039] A positioning counterweight 317 is installed on the second rotating shaft 316. The positioning counterweight 317 is provided with a clearance groove 3171. The outer claw 315 and the inner claw 314 are located in the clearance groove 3171.

[0040] A self-locking hook 33 is rotatably mounted on the first rotating shaft 311. The hook of the self-locking hook 33 is engaged on the second rotating shaft 316, and the side of the hook is rotatably connected to the bottom of the self-locking guide mechanism 32 through the traction assembly 34.

[0041] It should be noted that in this invention, the lifting bag 500 is first pressed down by the positioning counterweight 317, causing the rope to protrude. When the self-locking guide mechanism 32 is in the limited position and the lifting slider assembly 30 moves from the bottom to the upper limit position, the traction assembly 34 drives the self-locking hook 33 to disengage from the second rotating shaft 316. The inner claw 314 and the outer claw 315 perform a hooking action, that is, hook the rope. At this time, under the gravity of the lifting bag 500, the four-bar linkage composed of the inner connecting rod 312, the outer connecting rod 313, the outer claw 315 and the inner claw 314 will cause the outer claw 315 and the inner claw 314 to move closer to each other and not to loosen.

[0042] When the self-locking guide mechanism 32 is in the limited position and the lifting slider assembly 30 moves downward from the upper limit position, the traction assembly 34 drives the self-locking hook 33 to hook the second rotating shaft 316, and the inner claw 314 and the outer claw 315 realize the unhooking action, that is, release the rope.

[0043] In this application, the entire operation process does not require manual labor or other external force, but is achieved automatically by the mechanism itself to grab and unload the hook, thereby improving hoisting efficiency and saving costs.

[0044] In a preferred embodiment of this application, a stop bar is provided in the clearance groove 3171. The stop bar is located inside the claws of the inner claw 314 and the outer claw 315 to prevent the inner claw 314 and the outer claw 315 from overlapping during the hooking process, which would make it inconvenient to unhook the hook.

[0045] Please see Figures 3 to 5 The self-locking guide mechanism 32 includes a housing 321, a sliding element 322 that passes through the top of the housing 321 and can slide up and down, a gravity swing rod 323 that is rotatably mounted on the sliding element 322, and a baffle 324 mounted on the outer claw 315.

[0046] The top of the sliding element 322 is fixedly connected to the top of the lifting slider assembly 30, and one side of the bottom of the housing 321 is in rolling contact with the baffle 324, while the other side is rotatably connected to the traction assembly 34.

[0047] The outer casing 321 has a guide limiting block 325 inside, and the bottom of the guide limiting block 325 has a limiting notch 3251.

[0048] It should be clarified that, in this application, the structural principle of the self-locking guide mechanism 32 is similar to that of the installation structure of a mobile phone memory card. The bottom of the gravity swing arm 323 can only slide from the left side from the initial position at the top to the limiting notch 3251, and then slide from the right side from the limiting notch 3251 back to the initial position at the top.

[0049] Specifically, when the bottom of the gravity swing arm 323 is located in the limiting notch 3251, and the lifting slider assembly 30 moves from the bottom to the upper limit position, the traction assembly 34 drives the self-locking hook 33 to disengage from the second rotating shaft 316, and the inner claw 314 and the outer claw 315 perform a grabbing action, that is, hook the rope.

[0050] When the bottom of the gravity swing arm 323 is located in the limiting notch 3251, and the lifting slider assembly 30 moves downward from the upper limit position, the traction assembly 34 drives the self-locking hook 33 to hook the second rotating shaft 316, and the inner claw 314 and the outer claw 315 realize the unhooking action, that is, release the rope. At this time, because the self-locking hook 33 hooks the second rotating shaft 316, the lifting device is in the unhooked state, which facilitates direct secondary lifting.

[0051] Please see Figure 4 and Figure 5 The top of the guide limiting block 325 is tilted to the lower left, and the right end of the top is offset to the right of the center line of the outer shell 321.

[0052] The limiting notch 3251 is L-shaped, located on the left side of the outer shell 321 and inclined downward to the left;

[0053] The bottom of the outer casing 321 is provided with a left guide groove 3211 and a right guide groove 3212. The connection between the left guide groove 3211 and the right guide groove 3212 points to the left side of the hook of the limiting notch 3251. The end of the notch wall of the limiting notch 3251 is located on the left side of the bottom of the left guide groove 3211.

[0054] Specifically, when the sliding element 322 drives the gravity swing arm 323 to move downward from its initial position, the bottom of the gravity swing arm 323, under the obstruction of the guide limiting block 325, can only slide downward from the left to the left guide groove 3211; when the sliding element 322 drives the gravity swing arm 323 to move upward from the left guide groove 3211, the bottom of the gravity swing arm 323, under the obstruction of the guide limiting block 325, can only slide into the limiting notch 3251; when the sliding element 322 drives the gravity swing arm 323 to move downward from the limiting notch 3251, the bottom of the gravity swing arm 323 can only slide into the right guide groove 3212, and then return to the initial position at the top from the right.

[0055] In a preferred embodiment of this application, a stop is provided on the right side wall of the outer casing 321. The stop is located above the right groove wall of the right guide groove 3212, so that the gravity swing arm 323 can smoothly return to the initial position.

[0056] Please see Figure 4 and Figure 5 The gravity swing arm 323 includes a swing arm 3231, a swing shaft 3232 disposed at the top of the swing arm 3231, and a gravity shaft 3233 disposed at the bottom of the swing arm 3231.

[0057] The swing shaft 3232 and the gravity shaft 3233 are respectively located on two surfaces of the swing arm 3231. The swing shaft 3232 is rotatably mounted on the sliding element 322, and the gravity shaft 3233 slides within the outer casing 321.

[0058] Specifically, by setting the gravity axis 3233, the gravity swing arm 323 can return to a vertical state under its own gravity when there are no obstacles blocking it.

[0059] Please see Figure 3 and Figure 4 In a preferred embodiment of this application, the sliding element 322 includes a mounting plate 3221 fixedly connected to the top of the lifting slider assembly 30, a sliding guide post 3222 disposed on the mounting plate 3221 and passing through the top of the housing 321, and a lifting plate 3223 connected to the sliding guide post 3222. The swing shaft 3232 is rotatably connected to the lifting plate 3223.

[0060] Specifically, for the sake of stability, this application provides two sliding guide posts 3222.

[0061] Please see Figures 3 to 5In a preferred embodiment of this application, the bottom of the outer casing 321 is provided with a roller 326, the position of which corresponds to the position of the baffle 324, so as to achieve rolling contact between the bottom of the outer casing 321 and the baffle 324. Because the bottom of the outer casing 321 does not directly disengage from the baffle 324 during the hook-grabbing process, rolling contact is necessary to reduce friction. During the unhooking process, the outer casing 321 is blocked by the baffle 324, allowing the traction component 34 to push the self-locking hook 33 to engage the second rotating shaft 316.

[0062] Please see Figure 3 and Figure 4 In a preferred embodiment of this application, the traction assembly 34 includes at least two connecting pieces that are rotatably connected to each other. The connecting piece at the front end is rotatably connected to the bottom of the housing 321, and the connecting piece at the rear end is rotatably connected to the side of the self-locking hook 33, so as to drive the self-locking hook 33 to swing around the first rotating shaft 311.

[0063] Please see Figure 4 and Figure 5 In a preferred embodiment of this application, the lifting slider assembly 30 includes an upper lifting plate 301, a connecting shaft 302 disposed on the upper lifting plate 301, and a lower lifting plate 303 slidably connected to the connecting shaft 302. The bottom of the lower lifting plate 303 is fixedly connected to the first rotating shaft 311.

[0064] Specifically, the mounting plate 3221 is fixedly connected to the upper hanging plate 301.

[0065] In summary, the entire process of this invention requires no manual labor or other external force. Instead, the hook grabbing and unhooking are automatically achieved through the mechanism's own actions, providing a safe, high-speed, and efficient working environment for dock hoisting operations. This ensures the personal safety of hoisting personnel, reduces the risks of hoisting operations, and automates hoisting operations, thereby improving hoisting efficiency and saving costs.

[0066] In this specification, the various embodiments are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Furthermore, the above-described embodiments merely illustrate several implementation methods of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A non-powered automatic hook-and-unhook lifting device, characterized in that: It includes a lifting slider assembly, a non-powered hook rotatably connected to the bottom of the lifting slider assembly, and a self-locking guide mechanism fixedly connected to one side of the top of the lifting slider assembly; The non-powered hook includes a first rotating shaft, an inner connecting rod and an outer connecting rod rotatably connected to the first rotating shaft, an inner claw rotatably connected to the other end of the inner connecting rod, an outer claw rotatably connected to the other end of the outer connecting rod, and a second rotating shaft rotatably connected to the middle of the outer claw and the inner claw. The first rotating shaft is installed at the bottom of the lifting slider assembly. A positioning counterweight is installed on the second rotating shaft. The positioning counterweight has a clearance groove, and the outer claw and the inner claw are located in the clearance groove. A self-locking hook is rotatably mounted on the first rotating shaft. The hook of the self-locking hook is engaged on the second rotating shaft, and the side of the hook is rotatably connected to the bottom of the self-locking guide mechanism through a traction assembly. The self-locking guide mechanism includes a housing, a sliding element that passes through the top of the housing and can slide up and down, a gravity swing rod that is rotatably mounted on the sliding element, and a baffle mounted on the outer claw. The top of the sliding element is fixedly connected to the top of the lifting slider assembly, and one side of the bottom of the housing is in rolling contact with the baffle, while the other side is rotatably connected to the traction assembly. The outer shell is provided with a guide limiting block inside, and the bottom of the guide limiting block is provided with a limiting notch. When the bottom of the gravity swing arm is located in the limiting notch, and the lifting slider assembly moves from the bottom to the upper limit position, the traction assembly drives the self-locking hook to disengage from the second rotating shaft, and the inner claw and the outer claw realize the hook grabbing action. When the bottom of the gravity swing arm is located in the limiting notch, and the lifting slider assembly moves downward from the upper limit position, the traction assembly drives the self-locking hook to hook the second rotating shaft, and the inner claw and the outer claw realize the unhooking action; The bottom of the outer shell is provided with rollers, the position of which corresponds to the position of the baffle. The bottom of the outer shell is in rolling contact with the baffle. When the inner claw and the outer claw perform a gripping action, the rollers are separated from the baffle.

2. The non-powered automatic hook-and-unhook lifting device according to claim 1, characterized in that, The top of the guide limiting block is tilted to the lower left, and the right end of the top is offset to the right of the center line of the outer shell. The limiting notch is L-shaped, located on the left side of the outer shell and inclined downward to the left; The bottom of the outer casing is provided with a left guide groove and a right guide groove. The connection between the left guide groove and the right guide groove points to the left side of the hook of the limiting notch. The end of the notch wall of the limiting notch is located on the left side of the bottom of the left guide groove.

3. The non-powered automatic hook-and-unhook lifting device according to claim 2, characterized in that, A stop is provided on the right side wall of the outer casing, and the stop is located above the right groove wall of the right guide groove.

4. The non-powered automatic hook-and-unhook lifting device according to claim 2, characterized in that, The gravity swing arm includes a swing arm, a swing axis disposed at the top of the swing arm, and a gravity axis disposed at the bottom of the swing arm; The swing axis and the gravity axis are respectively located on two surfaces of the swing arm. The swing axis is rotatably mounted on the sliding element, and the gravity axis slides inside the housing.

5. The non-powered automatic hook-and-unhook lifting device according to claim 4, characterized in that, The sliding element includes a mounting plate fixedly connected to the top of the lifting slider assembly, a sliding guide post disposed on the mounting plate and passing through the top of the housing, and a lifting plate connected to the sliding guide post. The swing shaft is rotatably connected to the lifting plate.

6. The non-powered automatic hook-and-unhook lifting device according to claim 1, characterized in that, The traction assembly includes at least two connecting pieces that are rotatably connected to each other. The connecting piece at the front end is rotatably connected to the bottom of the housing, and the connecting piece at the rear end is rotatably connected to the side of the self-locking hook.

7. The non-powered automatic hook-and-unhook lifting device according to claim 1, characterized in that, The lifting slider assembly includes an upper lifting plate, a connecting shaft disposed on the upper lifting plate, and a lower lifting plate slidably connected to the connecting shaft. The bottom of the lower lifting plate is fixedly connected to the first rotating shaft.

8. A hanger, characterized in that, The system includes a slewing tower mounted on a crane, a lifting platform located below and connected to the slewing tower, and a plurality of non-powered automatic grab and unhook lifting devices as described in any one of claims 1 to 7, wherein the top of each of the non-powered automatic grab and unhook lifting devices is connected to the bottom of the lifting platform via a chain, and all of the chains are symmetrically distributed on the lifting platform.

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