Crane hook convenient for unloading

Abstract

The utility model relates to a crane hook convenient for unloading. The crane hook comprises a hanging seat and a hook, a first rotating shaft and a second rotating shaft which can independently rotate respectively are mounted in the lifting seat; the first rotating shaft and the second rotating shaft are arranged in parallel; the top of the lifting hook is fixedly arranged on the first rotating shaft in a sleeving manner; the second rotating shaft is fixedly sleeved with a hook. The hook opening part of the bent hook is opposite to the hook opening part of the lifting hook; the inner diameter of the bent hook is not less than the outer diameter of the lifting hook; the bent hook and the lifting hook can rotate relatively, so that the bent hook wraps the periphery of the lifting hook or the hook mouth parts of the bent hook and the lifting hook are separated from each other. When the lifting hook hooks goods, the lifting hook and the bent hook can relatively rotate to a closed-loop state to prevent the goods from unhooking; during unloading, unhooking can be easily achieved by rotating the lifting hook, and manual auxiliary operation is reduced.

Description

Technical Field

[0001] The utility model relates to a crane hook, in particular to a crane hook which is convenient for unloading. Background Art

[0002] Crane hook is one of the key components of lifting machinery, mainly used for lifting and transporting heavy objects. Its quality and performance directly affect the safety and efficiency of lifting operations.

[0003] In order to prevent the heavy object from being unhooked due to swaying when hanging heavy objects, the existing crane hooks are generally provided with a locking assembly between the hook body and the hook tip, such as the patent with publication number CN220449545U. Although the hook has a self-locking structure that can prevent the rope from falling off, when the heavy object is hoisted to hang the rope and when the heavy object is released to release the rope, it is necessary to manually hang the rope on the hook and release the hoisted rope from the hook. During the operation, it is necessary to release the lock of the locking assembly and hook the rope tied with the heavy object, which is troublesome and inconvenient to use, and it is difficult to achieve the purpose of convenient unloading of the hoisted goods.

[0004] For this reason, it is necessary to propose a crane hook that is convenient for unloading, in order to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of the above-mentioned prior art, a crane hook is provided which is convenient for unloading. The utility model provides the following technical solutions:

[0006] A crane hook for easy unloading includes a hanging seat and a hook; a first rotating shaft and a second rotating shaft which can rotate independently are installed in the hanging seat; the first rotating shaft and the second rotating shaft are arranged parallel to each other; the top of the hook is fixedly mounted on the first rotating shaft; a curved hook is fixedly mounted on the second rotating shaft; the hook mouth of the curved hook is arranged opposite to the hook mouth of the lifting hook; the inner diameter of the curved hook is not less than the outer diameter of the lifting hook; the curved hook and the lifting hook can rotate relative to each other, so that the curved hook is wrapped around the outer periphery of the lifting hook or the hook mouths of the two are separated from each other.

[0007] Preferably, a connecting rod is fixedly mounted on the hanging seat, and the connecting rod is located above the first rotating shaft; and the second rotating shaft is located on a side adjacent to the hook mouth of the hook, and the connecting rod is located on a side adjacent to the outer arc surface of the hook; the connecting rod and the outer arc surface of the hook are both connected with hanging rings, and a tension spring is connected between the two hanging rings, so that the hook mouth of the hook and the hook mouth of the bent hook are in a state of being separated from each other under normal circumstances.

[0008] Preferably, the first rotating shaft extends out of the hanging seat and is respectively fixedly mounted with a first gear at both ends; the second rotating shaft extends out of the hanging seat and is respectively fixedly mounted with a second gear at both ends; the first gear and the second gear located on the same side of the hanging seat are meshed with each other. This achieves that the hook and the curved hook can be synchronously linked and their movement directions are opposite, that is, the hook and the curved hook can synchronously move toward each other to close or open the loop.

[0009] Preferably, a connecting seat is fixedly mounted on the second rotating shaft; a positioning block extending horizontally outward is fixedly connected to the bottom of the connecting seat, the positioning block is located at a position corresponding to the upper straight rod portion of the hook, and a positioning groove recessed inward is formed on the side of the positioning block facing the upper straight rod portion of the hook, and the diameter of the positioning groove is not less than the outer diameter of the straight rod portion of the hook. When the hook and the curved hook are close to each other in a closed loop, the upper straight rod portion of the hook can be embedded in the positioning groove, which plays a certain role in limiting, guiding and preventing swinging.

[0010] Preferably, the top of the curved hook is fixedly connected to the bottom of the positioning block; the curved hook is installed on the second rotating shaft by being fixedly connected to the connecting seat.

[0011] Preferably, the hook is hollowed out in the middle, comprising two spaced and parallel arc-shaped curved pipes and a plurality of spaced reinforcing ribs connected between the two curved pipes; and the width of the hook is greater than the wide diameter of the hook, so as to ensure that the hook can be wrapped around the outside of the hook and reduce the weight of the hook to a certain extent to reduce the resistance to its rotation.

[0012] Preferably, a pulley for winding the lifting rope is also installed in the hanging seat, and the axle of the pulley is rotatably installed in the hanging seat; the axle is arranged parallel to the first rotating shaft, the axle is located above the first rotating shaft and the two are on the same vertical plane, so as to enhance the overall stability of the hook and the hook when the hook is heavy.

[0013] Preferably, the first gear is a missing gear, and a limit block extending horizontally outward is installed on the outer wall of the suspension seat. The limit block is located in the missing tooth section of the first gear and can be pressed against its inner side surface to limit the maximum rotation range of the first gear.

[0014] Preferably, the circumferential side length of the inner side of the hook is greater than 1 / 2 of the circumferential side length of the outer side of the hook, that is, when the hook is wrapped around the outer circumference of the hook, the wrapped length of the hook is greater than 1 / 2 of the outer circumference of the hook.

[0015] The working principle of the utility model is as follows: under normal conditions, the hook and the curved hook are in an "eight"-shaped open state, which is conducive to controlling the hook to conveniently hook the steel rope with the goods. After the hook is hung with a heavy object and subjected to force, it will rotate from an inclined state to a vertical state, and through the transmission action of the first gear and the second gear, the curved hook can be synchronously rotated in the direction of the hook, so that the curved hook can half-wrap around the hook to form a closed loop state, which is conducive to improving the safety when lifting the goods. When the goods are lifted to the designated location and the hook is gradually released, the tension of the tension spring will drive the hook and the curved hook to automatically unfold in a direction away from each other, which is conducive to the hook being able to conveniently loosen the steel rope and restore the "eight"-shaped open state, so as to achieve the purpose of conveniently unloading the goods.

[0016] The beneficial effects of the utility model are: it can greatly reduce the operation of manually assisting the hanging of heavy objects and loosening the hook, utilize the gravity of the goods to realize the self-hanging rotation of the hook, and utilize the tension of the tension spring to realize the unhooking of the goods, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from another viewing angle.

[0019] Figure 3 This is a diagram of the closed state of the hook and the curved hook of the utility model.

[0020] Figure 4 It is a side view of the utility model.

[0021] Figure 5 This is a structural separation diagram of the hook and connecting seat, bent hook and reinforcing rib of the utility model.

[0022] Figure markings: 1-suspension seat, 2-pulley, 21-axle; 3-first rotating shaft, 30-second rotating shaft, 4-hook, 5-connecting seat, 50-bend hook, 501-reinforcement rib, 502-bend pipe; 51-positioning block, 511-positioning groove, 6-first gear, 7-second gear, 8-connecting rod, 9-hanging ring, 10-tension spring, 11-limiting block. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0024] Example

[0025] The utility model provides a crane hook that is convenient for unloading. Figure 1-Figure 5As shown, it includes a hanging seat 1, a hook 4 and a curved hook 50. A first rotating shaft 3 and a second rotating shaft 30 which can rotate independently are installed in the hanging seat 1, and the first rotating shaft 3 and the second rotating shaft 30 are arranged parallel to each other. The top of the hook 4 is fixedly sleeved on the first rotating shaft 3. A connecting seat 5 is fixedly sleeved on the second rotating shaft 30, and a positioning block 51 extending horizontally outward is fixedly connected to the bottom of the connecting seat 5, and the top of the curved hook 50 is fixedly connected to the bottom of the positioning block 51. The hook mouth of the curved hook 50 is arranged opposite to the hook mouth of the hook 4, and the inner diameter of the curved hook 50 is slightly larger than the outer diameter of the hook 4. A connecting rod 8 is fixedly installed on the hanging seat 1, and the connecting rod 8 is located above the first rotating shaft 3. The second rotating shaft 30 is located on the side adjacent to the hook mouth of the hook 4, and the connecting rod 8 is located on the side adjacent to the outer arc surface of the hook 4. The connecting rod 8 and the outer arc surface of the hook 4 are both connected with a hanging ring 9, and a tension spring 10 is connected between the two hanging rings 9, so that the hook mouth of the hook 4 and the hook mouth of the curved hook 50 are in an "eight" shape and separated from each other under normal conditions.

[0026] The first rotating shaft 3 extends out of the hanging seat 1 and is respectively fixedly mounted with a first gear 6 at both ends. The second rotating shaft 30 extends out of the hanging seat 1 and is respectively fixedly mounted with a second gear 7 at both ends. The first gear 6 and the second gear 7 located on the same side of the hanging seat 1 are meshed with each other. The hook 50 and the hook 4 can rotate synchronously relative to each other, so that the hook 50 can be wrapped around the outer periphery of the hook 4 to form a closed loop, or the hook mouths of the two can be separated from each other to form an "eight" shape open state.

[0027] The first gear 6 is a missing gear, and a limit block 11 extending horizontally outward is installed on the outer wall of the hanging seat 1. The limit block 11 is located in the missing tooth section of the first gear 6 and can be pressed against its inner side surface to limit the maximum rotation range of the first gear 6, thereby preventing the hook 4 from rotating too much and affecting safety.

[0028] The positioning block 51 is located at a position corresponding to the upper straight rod of the hook 4, and a positioning groove 511 is formed on the side of the positioning block 51 facing the upper straight rod of the hook 4, and the diameter of the positioning groove 511 is not less than the outer diameter of the straight rod of the hook 4. When the hook and the curved hook are close to each other in a closed loop, the upper straight rod of the hook can be embedded in the positioning groove, which plays a certain role in limiting, guiding and preventing swinging.

[0029] The hook 50 is hollowed out in the middle, and includes two spaced and parallel arc-shaped curved tubes 502 and a plurality of spaced reinforcing ribs 501 connected between the two curved tubes 502, which are conducive to enhancing the stability of the structure of the hook 50 and reducing the weight of the hook to a certain extent to reduce the resistance of its rotation. In addition, the circumferential length of the inner side of the hook 50 is greater than 1 / 2 of the circumferential length of the outer side of the hook 4, that is, when the hook 50 is wrapped around the outer periphery of the hook 4, the wrapped length of the hook 50 is greater than 1 / 2 of the outer periphery of the hook 4. This ensures that the hook can be wrapped around the outer side of the hook.

[0030] A pulley 2 for winding a lifting rope is also installed in the hanging seat 1, and a wheel shaft 21 of the pulley 2 is rotatably installed in the hanging seat 1. The wheel shaft 21 is arranged parallel to the first rotating shaft 3, and the wheel shaft 21 is located above the first rotating shaft 3 and the two are in the same vertical plane to enhance the overall stability of the hook and the hook when the hook is heavy.

[0031] The working principle is: when the hook 4 is not hung with goods, the pulling effect of the tension spring 10 makes the hook 4 and the hook 50 open to the left and right sides respectively in an inclined state, which is conducive to the hanging of the steel rope for hoisting goods. When the hook 4 is hung with the steel rope with goods, the hook 4 rotates downward from the inclined state to the vertical state under the action of gravity, and then through the transmission effect of the first rotating shaft 3, the first gear 6 and the second gear 7, the second rotating shaft 30 can drive the connecting seat 5 and the hook 50 thereon to rotate synchronously toward the hook 4, which is conducive to semi-wrapping the hook 4, which is conducive to improving the safety of hoisting goods and avoiding the situation where the steel rope falls out in the middle of hoisting. When the cargo is hoisted to the designated location, the pull line on the control pulley 2 is relaxed to lower the height of the hook 4. When the hook 4 is no longer subjected to the pulling force of the cargo, the hook 4 is pulled outwardly to be tilted and reset under the pulling force of the tension spring 10, and the first gear 6 and the second gear 7 are meshed to make the hook 50 open and reset outward synchronously. This is conducive to conveniently loosening the steel rope hung on the hook 4, and then achieving convenient unloading of the hoisted cargo, without the need for manual assistance of the steel rope to detach from the hook 4, which is conducive to providing convenience for the operator.

[0032] Note: Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A crane hook for easy unloading, comprising a hanging seat (1) and a hook (4); characterized in that: The hanging seat (1) is provided with a first rotating shaft (3) and a second rotating shaft (30) which can rotate independently of each other; the first rotating shaft (3) and the second rotating shaft (30) are arranged parallel to each other; the top of the hook (4) is fixedly mounted on the first rotating shaft (3); a curved hook (50) is fixedly mounted on the second rotating shaft (30); the hook mouth of the curved hook (50) is arranged opposite to the hook mouth of the hook (4); the inner diameter of the curved hook (50) is not less than the outer diameter of the hook (4); the curved hook (50) and the hook (4) can rotate relative to each other, so that the curved hook (50) is wrapped around the outer periphery of the hook (4) or the hook mouths of the two are separated from each other.

2. A crane hook for easy unloading as claimed in claim 1, characterized in that: A connecting rod (8) is fixedly mounted on the hanging seat (1), and the connecting rod (8) is located above the first rotating shaft (3); and the second rotating shaft (30) is located on a side adjacent to the hook mouth of the hook (4), and the connecting rod (8) is located on a side adjacent to the outer arc surface of the hook (4); the connecting rod (8) and the outer arc surface of the hook (4) are both connected with hanging rings (9), and a tension spring (10) is connected between the two hanging rings (9) so that the hook mouth of the hook (4) and the hook mouth of the bent hook (50) are in a state of being separated from each other under normal conditions.

3. A crane hook for easy unloading as claimed in claim 1, characterized in that: The first rotating shaft (3) extends out of the hanging seat (1) and has two ends fixedly mounted thereon with first gears (6); the second rotating shaft (30) extends out of the hanging seat (1) and has two ends fixedly mounted thereon with second gears (7); the first gear (6) and the second gear (7) located on the same side of the hanging seat (1) are meshed with each other.

4. A crane hook for easy unloading as claimed in claim 1, characterized in that: A connecting seat (5) is fixedly mounted on the second rotating shaft (30); a positioning block (51) extending horizontally outward is fixedly connected to the bottom of the connecting seat (5); the positioning block (51) is located at a position corresponding to the upper straight rod portion of the hook (4); and a positioning groove (511) recessed inwardly is formed on one side of the positioning block (51) facing the upper straight rod portion of the hook (4); the diameter of the positioning groove (511) is not less than the outer diameter of the straight rod portion of the hook (4).

5. A crane hook for easy unloading as claimed in claim 4, characterized in that: The top of the curved hook (50) is fixedly connected to the bottom of the positioning block (51); the curved hook (50) is installed on the second rotating shaft (30) by being fixedly connected to the connecting seat (5).

6. A crane hook for easy unloading as claimed in claim 1 or 5, characterized in that: The hook (50) is designed with a hollow middle portion, and comprises two spaced-apart and parallel arc-shaped curved pipes (502) and a plurality of spaced-apart reinforcing ribs (501) connected between the two curved pipes (502).

7. A crane hook for easy unloading as claimed in claim 1, characterized in that: A pulley (2) for winding a lifting rope is also installed in the hanging seat (1), and the wheel axle (21) of the pulley (2) is rotatably installed in the hanging seat (1); the wheel axle (21) is arranged parallel to the first rotating shaft (3), and the wheel axle (21) is located above the first rotating shaft (3) and the two are on the same vertical plane.

8. A crane hook for easy unloading as claimed in claim 3, characterized in that: The first gear (6) is a missing gear, and a limit block (11) extending horizontally outward is installed on the outer wall of the suspension seat (1). The limit block (11) is located in the missing tooth section of the first gear (6) and can be pressed against its inner side surface to limit the maximum rotation range of the first gear (6).

9. A crane hook for easy unloading as claimed in claim 1, characterized in that: The circumferential side length of the inner side of the curved hook (50) is greater than 1 / 2 of the circumferential side length of the outer side of the hook (4), that is, when the curved hook (50) is wrapped around the outer periphery of the hook (4), the wrapped length of the curved hook (50) is greater than 1 / 2 of the outer periphery of the hook (4).

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