Automatic unhooking device

Abstract

The utility model relates to the technical field of cranes, and discloses an automatic unhooking device which comprises a hoisting mechanism and further comprises a fixing mechanism, an unhooking mechanism and a manual mechanism, the inner wall of the side face of the hoisting mechanism is movably connected with the side face of the fixing mechanism, and the side face of the unhooking mechanism is movably connected with the inner wall of the side face of the hoisting mechanism. The side face of the hand-operating mechanism is movably connected with the side face of the hoisting mechanism. The electric push rod pushes the sliding block to move upwards, the connecting rod pushes the ear hook to rotate along the fixing pin, the ear hook moves towards the outer side of the center line of the installation cylinder, when the mushroom head stretches into the installation cylinder, the electric push rod is started again to enable the top end of the electric push rod to be separated from the bottom end of the sliding block, and the ear hook rotates along the fixing pin under the action of gravity. And after hoisting is completed, the electric push rod is started again to push the sliding block to move upwards so that the ear hook can move towards the outer side of the center line of the mounting cylinder, and therefore the mushroom head is loosened.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and more specifically to an automatic unhooking device. Background Art

[0002] Crane, also known as overhead crane, overhead crane, and hoist, refers to a multi-action lifting machinery that vertically lifts and horizontally moves heavy objects within a certain range. When a crane lifts objects, it usually needs to use a hook for lifting. One type of hook is a hook ring or hook with a chain or rope attached, and the other type is a thick hook usually with a handle, especially a hook used to carry goods or hang meat. During the operation, each lifting is usually completed by manual operation to remove the hoisted object from the hook. The efficiency of hook removal is low. In order to improve work efficiency, an automatic unhooking device is used on the hook. Compared with manual lifting, the automatic unhooking device can improve the safety factor of personnel in the face of complex environments, and improve the efficiency and accuracy of operations.

[0003] Insufficient existing technology: During the use of the existing automatic unhooking device, the lifting device still needs to be manually fixed with the cargo and the hook before lifting, and then manually unhooked, which greatly reduces work efficiency. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides an automatic unhooking device to solve the problems existing in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic unhooking device, including a lifting mechanism, and also including: a fixing mechanism, an unhooking mechanism and a manual mechanism, the side inner wall of the lifting mechanism is movably connected to the side of the fixing mechanism, the side of the unhooking mechanism is movably connected to the side inner wall of the lifting mechanism, the side of the manual mechanism is movably connected to the side of the lifting mechanism, the lifting mechanism includes a mounting tube, the top end of the mounting tube is fixedly connected to a top lifting ear, the side of the mounting tube is fixedly connected to a fan-shaped shell, and the side of the fan-shaped shell is movably sleeved with a fixing pin The side of the fixing pin is movably connected with an ear hook, and the unhooking mechanism includes a slider, the side of the slider is movably connected to the inner wall of the side of the mounting tube, the bottom end of the slider is fixedly connected to a connecting block, the bottom end of the connecting block is movably connected to a connecting rod through a pin, and the bottom end of the connecting rod is movably connected to the top of the ear hook through a pin. The fixing mechanism includes a mounting platform, the top of the mounting platform is fixedly connected to a connecting column, the top of the connecting column is fixedly connected to a mushroom head, the top of the mushroom head is fixedly connected to an electric push rod, and the bottom end of the mounting platform is fixedly connected to a cargo lifting ear.

[0006] Furthermore, the bottom end of the mounting tube is fixedly connected with a bell mouth, the top end of the mushroom head is provided with an arc corner, and the bottom end of the ear hook is an arc-shaped structure.

[0007] Furthermore, the top end of the sliding block is movably connected to a roller via a pin, and the side surface of the roller is transmission-connected to the inner wall of the side surface of the mounting cylinder.

[0008] Furthermore, a reinforcing rib is fixedly connected to the top of the mounting platform, a side of the reinforcing rib is fixedly connected to a side of a connecting column, and the fixing mechanism is an integrated casting structure.

[0009] Furthermore, the center of gravity of the ear hook is not on the same vertical line as the center of the fixing pin, and the center of gravity of the ear hook is located at the central bottom end of the fixing pin and is closer to the center line of the mounting tube.

[0010] Furthermore, a first through slot is provided on the side of the mounting tube, the interior of the slider is a hollow structure, a second through slot is provided on the side of the slider, and the manual mechanism includes a push rod, the side of the push rod is movably connected to the side of the first through slot through a pin, and the top of the push rod is movably connected to the top inner wall of the slider.

[0011] Furthermore, the top end of the push rod is movably connected to a support wheel via a pin, and the top end of the support wheel is transmission-connected to the top inner wall of the sliding block.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model makes the top end of the electric push rod contact with the bottom end of the slider and pushes the slider to move upward, so that the top end of the connecting rod rotates along the bottom end of the connecting block, so that the connecting rod pushes the ear hook to rotate along the fixing pin, so that the ear hook moves toward the outside of the center line of the installation tube. When the mushroom head extends into the installation tube, its top end contacts with the top end of the inner groove of the ear hook, the electric push rod is started again to separate the top end of the electric push rod from the bottom end of the slider, and under the action of gravity, the ear hook rotates along the fixing pin, so that the side groove of the ear hook is stuck in the side of the mushroom head and tightened. After lifting is completed, the electric push rod is started again to push the slider upward to move the ear hook toward the outside of the center line of the installation tube, thereby releasing the mushroom head, which is conducive to reducing manual operation, greatly improving the unhooking efficiency, and is convenient and quick, realizing unmanned automatic operation.

[0014] 2. The utility model positions the mushroom head through the trumpet mouth, which facilitates the insertion of the mushroom head into the interior of the installation tube, and through the arc angle at the top of the mushroom head and the arc structure at the bottom of the ear hook, it is convenient for the mushroom head to enter the center of the three ear hooks, which is conducive to improving work efficiency.

[0015] 3. When the electric push rod fails to operate, the utility model pulls the push rod downward to rotate along the pin on the side of the first through groove, and the supporting wheel at the top of the other end of the push rod rolls on the top inner wall of the slider, thereby driving the slider to move upward, thereby realizing the lifting and disassembly of the goods, which is beneficial to improving the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the fixing mechanism structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the hoisting mechanism of the utility model;

[0019] Figure 4 It is a cross-sectional structural schematic diagram of the lifting mechanism of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the unhooking mechanism of the utility model.

[0021] The accompanying drawings are marked as follows: 1. lifting mechanism; 101. mounting tube; 102. ear hook; 103. bell mouth; 104. top lifting ear; 105. fan-shaped shell; 106. fixing pin; 107. first through slot; 2. fixing mechanism; 201. mounting platform; 202. electric push rod; 203. cargo lifting ear; 204. mushroom head; 205. arc angle; 206. reinforcing rib; 207. connecting column; 3. unhooking mechanism; 301. slider; 302. connecting rod; 303. connecting block; 304. roller; 305. second through slot; 4. manual mechanism; 401. push rod; 402. supporting wheel. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The automatic unhooking device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0023] Reference Figures 1 to 5The utility model provides an automatic unhooking device, including a hoisting mechanism 1, which also includes: a fixing mechanism 2, an unhooking mechanism 3 and a manual mechanism 4, the side inner wall of the hoisting mechanism 1 is movably connected to the side of the fixing mechanism 2, the side of the unhooking mechanism 3 is movably connected to the side inner wall of the hoisting mechanism 1, the side of the manual mechanism 4 is movably connected to the side of the hoisting mechanism 1, the hoisting mechanism 1 includes a mounting tube 101, the top of the mounting tube 101 is fixedly connected with a top lifting ear 104, the side of the mounting tube 101 is fixedly connected with a fan-shaped shell 105, the side of the fan-shaped shell 105 is movably sleeved with a fixing pin 106, and the side of the fixing pin 106 is movably connected with an ear hook 102, the unhooking mechanism 3 includes a slider 3 01, the side of the slider 301 is movably connected to the inner wall of the side of the mounting tube 101, the bottom end of the slider 301 is fixedly connected to the connecting block 303, the bottom end of the connecting block 303 is movably connected to the connecting rod 302 through a pin, the bottom end of the connecting rod 302 is movably connected to the top of the ear hook 102 through a pin, the fixing mechanism 2 includes a mounting platform 201, the top of the mounting platform 201 is fixedly connected to a connecting column 207, the top of the connecting column 207 is fixedly connected to a mushroom head 204, the top of the mushroom head 204 is fixedly connected to an electric push rod 202, the bottom end of the mounting platform 201 is fixedly connected to a cargo lifting ear 203, and the lifting mechanism 1 is installed on the crane by passing a bolt through the through hole on the top lifting ear 104 When not in use, the three ear hooks 102 evenly distributed on the side of the installation cylinder 101 move downward along the inner wall of the side of the installation cylinder 101 under the action of gravity, so that the top of the connecting rod 302 rotates along the bottom of the connecting block 303, pushing the ear hook 102 to rotate along the fixing pin 106, so that the bottom end of the ear hook 102 approaches the inner side of the center line of the installation cylinder 101. When hoisting cargo, multiple fixing mechanisms 2 are prepared, and the cargo is connected to the fixing mechanism 2 by passing bolts or installation pins through the through holes on the sides of the cargo lifting ears 203. When hoisting, the electric push rod 202 extends out of the top of the mushroom head 204, and the mushroom head 204 is extended into the interior of the installation cylinder 101. The top of the electric push rod 202 and the slide The bottom end of the block 301 is contacted and the slider 301 is pushed to move upward, so that the top end of the connecting rod 302 rotates along the bottom end of the connecting block 303, so that the connecting rod 302 pushes the ear hook 102 to rotate along the fixing pin 106, so that the ear hook 102 moves to the outside of the center line of the installation tube 101. When the mushroom head 204 extends into the installation tube 101, its top contacts the top of the slot in the ear hook 102, and the electric push rod 202 is started again to separate the top of the electric push rod 202 from the bottom end of the slider 301. Under the action of gravity, the ear hook 102 rotates along the fixing pin 106, so that the side slot of the ear hook 102 is stuck in the side of the mushroom head 204 and tightened, the fixing mechanism 2 is fixed, and the lifting of the object is completed.

[0024] Among them, the bottom end of the mounting tube 101 is fixedly connected with a bell mouth 103, the top end of the mushroom head 204 is provided with an arc corner 205, and the bottom end of the ear hook 102 is an arc structure. The mushroom head 204 is positioned through the bell mouth 103, which facilitates the insertion of the mushroom head 204 into the interior of the mounting tube 101, and through the arc corner 205 at the top of the mushroom head 204 and the arc structure at the bottom of the ear hook 102, the mushroom head 204 is convenient to enter the center of the three ear hooks 102.

[0025] Among them, the top of the slider 301 is movably connected to the roller 304 through a pin, and the side of the roller 304 is transmission-connected to the inner wall of the side of the mounting cylinder 101. When the slider 301 slides on the inner wall of the frontal surface of the mounting cylinder 101, the roller 304 contacts the inner wall of the side of the mounting cylinder 101, converting the sliding friction into rolling friction, thereby reducing the wear between the slider 301 and the mounting cylinder 101.

[0026] The top of the mounting platform 201 is fixedly connected with a reinforcing rib 206, and the side of the reinforcing rib 206 is fixedly connected with the side of the connecting column 207. The fixing mechanism 2 is an integrated casting structure to ensure the overall strength of the fixing mechanism 2 and avoid damage.

[0027] Among them, the center of gravity of the ear hook 102 and the center of the fixing pin 106 are not on the same vertical line. The center of gravity of the ear hook 102 is located at the central bottom end of the fixing pin 106 and is closer to the center line of the mounting tube 101, ensuring that when the three ear hooks 102 are not in use, the ear hooks 102 rotate along the fixing pin 106 under the action of gravity, so that the bottom end of the ear hook 102 is close to the center line of the mounting tube 101 to fix the fixing mechanism 2.

[0028] Among them, a first through groove 107 is opened on the side of the mounting cylinder 101, the interior of the slider 301 is a hollow structure, a second through groove 305 is opened on the side of the slider 301, and the manual mechanism 4 includes a push rod 401, and the side of the push rod 401 is movably connected to the side of the first through groove 107 through a pin, and the top of the push rod 401 is movably connected to the top inner wall of the slider 301. When the electric push rod 202 fails and cannot run, the push rod 401 is pulled downward to make the push rod 401 rotate along the pin on the side of the first through groove 107, and the other end of the push rod 401 is on the top inner wall of the slider 301 to drive the slider 301 to move upward, thereby realizing the lifting and disassembly of the goods.

[0029] Among them, the top end of the push rod 401 is movably connected to the support wheel 402 through a pin, and the top end of the support wheel 402 is transmission-connected to the top inner wall of the slider 301. When the top end of the push rod 401 and the top inner wall of the slider 301 move, the support wheel 402 rolls along the top inner wall of the slider 301, reducing the wear between the push rod 401 and the slider 301.

[0030] The working principle of the utility model is as follows: the lifting mechanism 1 is installed on the crane by passing bolts through the through holes on the top lifting ears 104, a plurality of fixing mechanisms 2 are prepared, the cargo is connected to the fixing mechanisms 2 by passing bolts or mounting pins through the through holes on the sides of the cargo lifting ears 203, the crane is started to align the bell mouth 103 with the mushroom head 204, the crane is controlled to move the bell mouth 103 downward, so that the mushroom head 204 is inserted into the interior of the installation tube 101 through the bell mouth 103, and when the top end of the mushroom head 204 is close to the bottom end of the ear hook 102, the crane is started. The electric push rod 202 is driven to make the top end of the electric push rod 202 contact with the bottom end of the slider 301, and push the slider 301 to move upward, so that the top end of the connecting rod 302 rotates along the bottom end of the connecting block 303, so that the connecting rod 302 pushes the ear hook 102 to rotate along the fixing pin 106, so that the ear hook 102 moves to the outside of the center line of the installation tube 101. When the mushroom head 204 extends into the interior of the installation tube 101, its top end contacts the top end of the card slot in the ear hook 102, and the electric push rod 202 is started again to make the top end of the electric push rod 202 contact with the slider The bottom end of the slider 301 is separated, and under the action of gravity, the ear hook 102 rotates along the fixing pin 106, so that the side slot of the ear hook 102 is stuck in the side of the mushroom head 204 and tightened, and the fixing mechanism 2 is fixed to complete the lifting of the goods. When the goods are lifted and need to be unloaded, the top end of the electric push rod 202 is started to contact the bottom end of the slider 301, and the slider 301 is pushed to move upward, so that the top end of the connecting rod 302 rotates along the bottom end of the connecting block 303, so that the connecting rod 302 pushes the ear hook 102 along the fixing pin 106 The ear hook 102 is rotated to move toward the outside of the center line of the installation tube 101, thereby loosening the mushroom head 204. The crane is operated to lift the lifting mechanism 1 to move the mushroom head 204 out of the installation tube 101. When the electric push rod 202 fails to operate, the push rod 401 is pulled downward to rotate along the pin on the side of the first through groove 107. The supporting wheel 402 at the top of the other end of the push rod 401 rolls on the inner wall of the top of the slider 301, thereby driving the slider 301 to move upward, thereby realizing the lifting and disassembly of the goods.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic unhooking device, comprising a lifting mechanism (1), characterized in that: Also includes: A fixing mechanism (2), a decoupling mechanism (3) and a manual mechanism (4); the inner wall of the side of the hanging mechanism (1) is movably connected to the side of the fixing mechanism (2); the side of the decoupling mechanism (3) is movably connected to the inner wall of the side of the hanging mechanism (1); the side of the manual mechanism (4) is movably connected to the side of the hanging mechanism (1); the hanging mechanism (1) comprises a mounting tube (101); the top of the mounting tube (101) is fixedly connected to a top lifting ear (104); the side of the mounting tube (101) is fixedly connected to a fan-shaped shell (105); the side of the fan-shaped shell (105) is movably sleeved with a fixing pin (106); the side of the fixing pin (106) is movably connected to an ear hook (102); the decoupling mechanism (3) comprises a slider ( The side of the slider (301) is movably connected to the inner wall of the side of the mounting tube (101); the bottom end of the slider (301) is fixedly connected to a connecting block (303); the bottom end of the connecting block (303) is movably connected to a connecting rod (302) via a pin; the bottom end of the connecting rod (302) is movably connected to the top of the ear hook (102) via a pin; the fixing mechanism (2) comprises a mounting platform (201); the top end of the mounting platform (201) is fixedly connected to a connecting column (207); the top end of the connecting column (207) is fixedly connected to a mushroom head (204); the top end of the mushroom head (204) is fixedly connected to an electric push rod (202); and the bottom end of the mounting platform (201) is fixedly connected to a cargo lifting ear (203).

2. The automatic unhooking device according to claim 1, characterized in that: The bottom end of the installation tube (101) is fixedly connected with a bell mouth (103), the top end of the mushroom head (204) is provided with an arc corner (205), and the bottom end of the ear hook (102) is an arc-shaped structure.

3. The automatic unhooking device according to claim 1, characterized in that: The top end of the sliding block (301) is movably connected to a roller (304) via a pin, and the side surface of the roller (304) is drivingly connected to the inner wall of the side surface of the installation cylinder (101).

4. The automatic unhooking device according to claim 1, characterized in that: A reinforcing rib (206) is fixedly connected to the top of the mounting platform (201), and a side surface of the reinforcing rib (206) is fixedly connected to a side surface of a connecting column (207), and the fixing mechanism (2) is an integrated casting structure.

5. The automatic unhooking device according to claim 1, characterized in that: The center of gravity of the ear hook (102) is not on the same vertical line as the center of the fixing pin (106). The center of gravity of the ear hook (102) is located at the center bottom end of the fixing pin (106) and is closer to the center line of the mounting tube (101).

6. The automatic unhooking device according to claim 1, characterized in that: A first through slot (107) is provided on the side of the mounting tube (101); the interior of the slider (301) is a hollow structure; a second through slot (305) is provided on the side of the slider (301); the manual mechanism (4) comprises a push rod (401); the side of the push rod (401) is movably connected to the side of the first through slot (107) via a pin; and the top end of the push rod (401) is movably connected to the inner wall of the top end of the slider (301).

7. The automatic unhooking device according to claim 6, characterized in that: The top end of the push rod (401) is movably connected to a support wheel (402) via a pin, and the top end of the support wheel (402) is transmission-connected to the inner wall of the top end of the slider (301).

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