Automatic unloading lifting hook and automatic unloading method

Abstract

The invention belongs to the technical field of hoisting equipment, and discloses an automatic unloading lifting hook and an automatic unloading method. A hook body; a push-off member; the driving mechanism is mounted on the assembly frame and is used for simultaneously driving the lifting hook body and the push-off piece to rotate in opposite directions, so that the lifting hook body can penetrate through the through hole, and when the lifting hook body penetrates through the through hole, the opening faces the inclined lower part, so that a lifting rope hung on the hook head is separated from the opening. According to the invention, the lifting hook body is matched with the push-off piece, so that the lifting rope can be quickly and automatically unhooked; the lifting rope is ejected out through expansion of the arranged supporting part, and the situation that unhooking fails due to the fact that the lifting rope is clamped at the hook head can be effectively avoided; when the supporting part is in the pre-expansion state, flexible protection on the surface of the hook head can be formed, rigid contact between the lifting rope and the hook head is effectively reduced, abrasion between the lifting rope and the hook head is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of hoisting equipment, and in particular relates to an automatic unloading hook and an automatic unloading method. Background Art

[0002] After the hook on the existing crane has hoisted the object, manual assistance is needed to remove the lifting rope from the hook. Manual detachment requires the operator to accurately judge the status of the hook and the object. If the operation is not timely or accurate, it may lead to accidents, causing personal injury or property damage. Manual detachment may be affected by factors such as the operator's professional skill level and fatigue level, and there are certain safety hazards. Manual detachment requires the participation of special operators, which may increase work time and cost and reduce work efficiency. Therefore, we propose an automatic unloading hook and an automatic unloading method to solve the above problems. Summary of the invention

[0003] In order to solve the above problems, the present invention provides an automatic unloading hook and an automatic unloading method, which solves the problems of safety hazards and reduced work efficiency caused by manual unloading.

[0004] The present invention is implemented by the following scheme: an automatic unloading hook, comprising:

[0005] An assembly frame connected to the crane;

[0006] A hook body, the hook body comprising a hook handle rotatably connected to the assembly frame and a hook head for hanging a lifting rope; one end of the hook head is fixedly connected to the hook handle, and an opening is formed between the other end and the hook handle;

[0007] A push-off member is rotatably connected to the assembly frame, and the rotation axis is parallel to the rotation axis of the hook body. When the hook body is in a vertical state, the opening faces obliquely upward, and the push-off member is located on a side of the hook body away from the opening. The push-off member is provided with a through hole for the hook body to pass through; and

[0008] The driving mechanism is installed on the assembly frame and is used to simultaneously drive the hook body and the push-off piece to rotate in opposite directions to each other, so that the hook body can pass through the through opening, and the hook body satisfies that when passing through the through opening, the opening faces obliquely downward, so that the lifting rope hung on the hook head can be detached through the opening.

[0009] A further improvement of the automatic unloading hook of the present invention is that the automatic unloading hook also includes a supporting mechanism for lifting the lifting rope hung on the hook head to the opening height.

[0010] A further improvement of the automatic unloading hook of the present invention is that the supporting mechanism includes a supporting portion covering the inner surface of the hook head and for the lifting rope to hang on, the supporting portion has a variable volume and satisfies that the surface height of the supporting mechanism is not lower than the opening height when it is at the maximum volume.

[0011] A further improvement of the automatic unloading hook of the present invention is that the support part is a bag-shaped object with a closed cavity formed inside, the supporting mechanism also includes a fluid and a filling and pumping system for filling / extracting the fluid into / from the closed cavity to adjust the volume of the support part, the filling and pumping system is fixed on the assembly frame and connected to the closed cavity through a pipeline.

[0012] A further improvement of the automatic unloading hook of the present invention is that the automatic unloading hook also includes a pressure sensor arranged in the closed cavity for detecting the fluid pressure in the closed cavity.

[0013] A further improvement of the automatic unloading hook of the present invention is that the assembly frame includes a frame body, a notch opened at the lower part of the frame body, an upper rotating shaft and a lower rotating shaft rotatably connected to the notch, the hook handle is fixedly connected to the lower rotating shaft, and the push-off piece is fixedly connected to the upper rotating shaft.

[0014] A further improvement of the automatic unloading hook of the present invention is that both ends of the upper rotating shaft extend out of the frame body, and the push-off member includes two side plates respectively connected and fixed to the two ends of the upper rotating shaft and a scraper connected between the lower parts of the two side plates, and the two side plates and the scraper are combined to form the through opening.

[0015] A further improvement of the automatic unloading hook of the present invention is that the driving mechanism includes a driving motor fixed on the frame, a first gear fixed on the upper rotating shaft, and a second gear fixed on the lower rotating shaft and meshing with the first gear, and the output shaft of the driving motor is fixedly connected to the end of the upper rotating shaft / lower rotating shaft.

[0016] An automatic unloading method comprises the following steps:

[0017] S1. Provide the automatic unloading hook as described above;

[0018] S2, connecting the assembly frame to the crane, starting the driving mechanism to drive the hook body to rotate to a vertical state with the opening facing obliquely upward, and the push-off piece rotates to the side of the hook body away from the opening, and then starts to hang the rope and lift the object;

[0019] S3, lift the object on the lifting rope to the designated position;

[0020] S4, start the driving mechanism and drive the hook body and the push-off member to rotate in opposite directions. When the hook body passes through the through opening, the opening faces obliquely downward, so that the rope hanging on the hook head can be detached through the opening.

[0021] A further improvement of the automatic unloading method of the present invention is that, before implementing step S2, it also includes the following steps:

[0022] Providing a supporting mechanism, the supporting mechanism comprising a fluid, a supporting portion, a charging and pumping system, and a pipeline;

[0023] The charging and pumping system is fixed on the assembly frame, the supporting part is covered on the inner surface of the hook head for hanging the lifting rope, and the pipeline is connected between the supporting part and the charging and pumping system.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention can realize fast and automatic unhooking of the hook rope by cooperating with the hook body and the push-off piece; the support part is set to expand and push out the rope, which can effectively avoid the situation where the rope is stuck at the hook head and causes unhooking failure, thereby improving the unhooking efficiency; when the support part is in a pre-expanded state, it can form a flexible protection for the surface of the hook head, effectively reduce the rigid contact between the rope and the hook head, reduce the wear between the rope and the hook head, and increase the service life of the hook body; through the setting of the pressure sensor, the state between the hook body and the rope can be judged by detecting the fluid pressure of the support part, thereby ensuring the precise execution of automatic unhooking. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram showing the hook body of the present invention in a hoisting state is shown.

[0027] Figure 2 The schematic diagram shows the driving mechanism of the present invention when it is started to drive the lower rotating shaft and the upper rotating shaft to rotate.

[0028] Figure 3 A schematic diagram showing the supporting portion of the present invention in a fully expanded state is shown.

[0029] Figure 4 The schematic diagram shows the push-off member of the present invention unhooking the suspension rope from the hook head.

[0030] Figure 5 A schematic diagram of unhooking is shown when the hook body of the present invention is not provided with a supporting mechanism.

[0031] Figure 6 A schematic side view of the present invention is shown.

[0032] In the figure: 1. hook body; 101. hook handle; 102. hook head; 103. opening; 2. push-off piece; 201. scraper; 202. side plate; 3. support part; 4. charging and pumping system; 5. pipeline; 6. lower rotating shaft; 7. upper rotating shaft; 8. driving mechanism; 9. frame; 10. lifting rope; 11. through-port. DETAILED DESCRIPTION

[0033] In order to solve the problem of safety hazards and reduced work efficiency caused by manual disengagement, the present invention provides an automatic unloading hook and an automatic unloading method. The automatic unloading hook and the automatic unloading method are further described below with specific embodiments combined with the accompanying drawings.

[0034] See also Figure 1 to Figure 6 As shown, an automatic unloading hook comprises:

[0035] An assembly frame connected to the crane;

[0036] The hook body 1 includes a hook handle 101 rotatably connected to the assembly frame and a hook head 102 for hanging the lifting rope 10; one end of the hook head 102 is connected and fixed to the hook handle 101, and an opening 103 is formed between the other end and the hook handle 101;

[0037] The push-off member 2 is rotatably connected to the assembly frame, and the rotation axis is parallel to the rotation axis of the hook body 1. When the hook body 1 is in a vertical state, the opening 103 faces obliquely upward, and the push-off member 2 is located on the side of the hook body 1 away from the opening 103. The push-off member 2 is provided with a through hole 11 for the hook body 1 to pass through; and

[0038] The driving mechanism 8 is installed on the assembly frame, and is used for simultaneously driving the hook body 1 and the push-off member 2 to rotate in opposite directions to each other, so that the hook body 1 can pass through the through opening 11, and the hook body 1 satisfies that when passing through the through opening 11, the opening 103 faces obliquely downward, so that the rope 10 hung on the hook head 102 can be detached through the opening 103.

[0039] Specifically, after the object to be suspended is placed at the designated position and the hook body 1 no longer carries the object, the driving mechanism 8 can be started to drive the hook body 1 and the push-off member 2 to increase the rotation angle, so that the surface of the hook head 102 supporting the suspension rope 10 is inclined to allow the suspension rope 10 to slide down, and then cooperate with the push of the push-off member 2 to realize the automatic unhooking of the suspension rope 10; it is suitable for automatic unhooking when the hook body 1 is in a no-load condition.

[0040] Among them, see Figure 1-4 As shown, the automatic unloading hook also includes a supporting mechanism for lifting the rope 10 hung on the hook head 102 to the height of the opening 103;

[0041] The supporting mechanism includes a supporting portion 3 covering the inner surface of the hook head 102 and supported by the sling 10. The supporting portion 3 has a variable volume and satisfies that the surface height of the supporting mechanism is not lower than the height of the opening 103 when the volume is the largest.

[0042] The support part 3 is a sac-shaped object with a closed cavity formed inside. The supporting mechanism also includes a fluid and a filling and pumping system 4 for filling / extracting the fluid into / from the closed cavity to adjust the volume of the support part 3. The filling and pumping system 4 is fixed on the assembly frame and connected to the closed cavity through a pipeline 5.

[0043] Specifically, the fluid can be a liquid solution, and the filling and pumping system 4 can include hydraulic equipment and a liquid storage tank connected to the pipeline. The fluid in the liquid storage tank is filled into the support part 3 through the pipeline 5 by pressure. When the pressure in the support part 3 is greater than the external air pressure, it will expand. When the pressure in the support part 3 is less than the external air pressure, the fluid in the support part 3 will be squeezed back into the liquid storage tank through the pipeline 5, thereby completing the filling and pumping process; polyester or nylon fiber mesh is added between the rubber layers of the rubber bladder as a reinforcement layer to improve the structural strength. These fiber layers enhance the tear resistance and increase the durability.

[0044] Furthermore, when the support portion 3 is in the pre-expanded state, the support portion 3 at least forms a protective layer protruding from the bearing surface of the hook head 102; when the support portion 3 is in the pre-expanded state, a flexible protection for the surface of the hook head 102 can be formed, effectively reducing the rigid contact between the lifting rope 10 and the hook head 102, that is, before and when lifting the object to be lifted, the expanded support portion 3 can be in the pre-expanded state, reducing the wear between the lifting rope 10 and the hook head 102, ensuring the integrity of the hook body 1, and increasing the service life of the hook body 1; replacing the support portion 3 is less costly than repairing the worn hook head 102.

[0045] The lifting rope 10 supported on the hook head 102 is lifted to the height of the opening 103 through the lifting mechanism, and then the driving mechanism 8 is started to drive the hook body 1 and the push-off member 2 to rotate, so that the unhooking can be completed smoothly, avoiding the lifting rope 10 getting stuck at the hook head 102 and causing unhooking failure; and the automatic unloading hook equipped with the lifting mechanism can automatically unhook when there is load, that is, when the hoisted object is still in a suspended state, which effectively broadens the application scenarios.

[0046] The automatic unloading hook further comprises a pressure sensor arranged in the closed cavity for detecting the fluid pressure in the closed cavity.

[0047] By setting the pressure sensor, the fluid pressure in the support part 3 can be monitored in real time. When the object is lifted, the lifting rope 10 is tightly tied to the support part 3, and the pressure detected by the pressure sensor is large, indicating that the object is in a suspended state, and unhooking operation is not recommended; when the object is lifted to the designated position and placed, the lifting rope 10 is no longer tightly tied to the support part 3, and the pressure detected by the pressure sensor is small, indicating that the object has been placed at the designated position and unhooking operation can be performed; this is conducive to accurate unhooking by the operator.

[0048] Among them, see Figure 6As shown, the assembly frame includes a frame body 9, a notch opened at the lower part of the frame body 9, an upper rotating shaft 7 and a lower rotating shaft 6 rotatably connected to the notch, a hook handle 101 is fixedly connected to the lower rotating shaft 6, and a push-off member 2 is fixedly connected to the upper rotating shaft 7;

[0049] Both ends of the upper rotating shaft 7 extend out of the frame 9 , and the push-off member 2 includes two side plates 202 respectively connected and fixed to the two ends of the upper rotating shaft 7 and a scraper 201 connected between the lower parts of the two side plates 202 . The two side plates 202 and the scraper 201 are combined to form a through opening 11 .

[0050] For details, see Figure 4 It can be seen that the side of the scraper 201 that abuts against the lifting rope 10 adopts a slope structure, and is covered on the outside of the hook body 1 by a frame 9 provided with a through opening 11. When the hook body 1 passes through the through opening 11, the scraper 201 can be rotated to a vertical shape and push the lifting rope 10 hung on the hook head 102 to be unhooked, which is convenient to use.

[0051] Among them, see Figure 6 As shown, the driving mechanism 8 includes a driving motor fixed on the frame 9, a first gear fixed on the upper rotating shaft 7, and a second gear fixed on the lower rotating shaft 6 and meshing with the first gear. The output shaft of the driving motor is fixedly connected to the end of the upper rotating shaft 7 / lower rotating shaft 6.

[0052] By starting the driving motor to drive the lower rotating shaft 6 / upper rotating shaft 7 to rotate, the first gear and the second gear are meshed to drive the hook body 1 and the push-off member 2 to rotate in opposite directions, which is conducive to synchronous rotation.

[0053] An automatic unloading method comprises the following steps:

[0054] S1. Provide the automatic unloading hook as described above;

[0055] S2, connecting the assembly frame to the crane, starting the driving mechanism 8 to drive the hook body 1 to rotate to a vertical state with the opening 103 facing obliquely upward, and the push-off member 2 rotates to the side of the hook body 1 away from the opening 103, and then starts to hang the rope and lift the object;

[0056] S3, lifting the object on the lifting rope 10 to a designated position;

[0057] S4, start the driving mechanism 8 and simultaneously drive the hook body 1 and the push-off member 2 to rotate in opposite directions. When the hook body 1 passes through the through hole 11, the opening 103 faces obliquely downward, so that the rope 10 hanging on the hook head 102 can be detached through the opening 103.

[0058] Before implementing step S2, the method further includes the following steps:

[0059] Providing a supporting mechanism, the supporting mechanism comprising a fluid, a supporting portion 3, a charging and pumping system 4 and a pipeline 5;

[0060] The charging and pumping system 4 is fixed on the assembly frame, the support part 3 is covered on the inner surface of the hook head 102 for hanging the suspension rope 10 , and the pipeline 5 is connected between the support part 3 and the charging and pumping system 4 .

[0061] When implementing step S4, the filling and pumping system 4 is started to fill the closed cavity in the support part 3 with fluid through the pipeline 5, so as to expand the volume of the support part 3 and lift the rope 10 hung on the hook head 102 to the height of the opening 103.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. An automatic unloading hook, characterized in that: include: An assembly frame connected to the crane; A hook body, the hook body comprising a hook handle rotatably connected to the assembly frame and a hook head for hanging a lifting rope; one end of the hook head is fixedly connected to the hook handle, and an opening is formed between the other end and the hook handle; A push-off member is rotatably connected to the assembly frame, and the rotation axis is parallel to the rotation axis of the hook body. When the hook body is in a vertical state, the opening faces obliquely upward, and the push-off member is located on a side of the hook body away from the opening. The push-off member is provided with a through hole for the hook body to pass through; as well as The driving mechanism is installed on the assembly frame and is used to simultaneously drive the hook body and the push-off piece to rotate in opposite directions to each other, so that the hook body can pass through the through opening, and the hook body satisfies that when passing through the through opening, the opening faces obliquely downward, so that the lifting rope hung on the hook head can be detached through the opening.

2. The automatic unloading hook according to claim 1, characterized in that: The automatic unloading hook also includes a supporting mechanism for lifting the lifting rope hung on the hook head to the opening height.

3. The automatic unloading hook according to claim 2, characterized in that: The supporting mechanism includes a supporting portion which is coated on the inner surface of the hook head and supported by the sling, and the supporting portion has a variable volume and satisfies that the surface height of the supporting mechanism is not lower than the opening height when the volume is maximum.

4. The automatic unloading hook according to claim 3, characterized in that: The support part is a sac-shaped object with a closed cavity formed inside. The supporting mechanism also includes a fluid and a filling and pumping system for filling / extracting the fluid into / from the closed cavity to adjust the volume of the support part. The filling and pumping system is fixed on the assembly frame and connected to the closed cavity through a pipeline.

5. The automatic unloading hook according to claim 4, characterized in that: The automatic unloading hook also includes a pressure sensor arranged in the closed cavity, which is used to detect the fluid pressure in the closed cavity.

6. The automatic unloading hook according to claim 1, characterized in that: The assembly frame comprises a frame body, a notch opened at the lower part of the frame body, an upper rotating shaft and a lower rotating shaft rotatably connected in the notch, the hook handle is fixedly connected to the lower rotating shaft, and the push-off member is fixedly connected to the upper rotating shaft.

7. The automatic unloading hook according to claim 6, characterized in that: Both ends of the upper rotating shaft extend out of the frame body, and the push-off member includes two side plates respectively connected and fixed to the two ends of the upper rotating shaft and a scraper connected between the lower parts of the two side plates, and the two side plates and the scraper are combined to form the through opening.

8. The automatic unloading hook according to claim 6, characterized in that: The driving mechanism includes a driving motor fixed on the frame, a first gear fixed on the upper rotating shaft, and a second gear fixed on the lower rotating shaft and meshing with the first gear. The output shaft of the driving motor is fixedly connected to the end of the upper rotating shaft / lower rotating shaft.

9. An automatic unloading method, characterized in that: The steps include: S1. Provide the automatic unloading hook as claimed in claim 1; S2, connecting the assembly frame to the crane, starting the driving mechanism to drive the hook body to rotate to a vertical state with the opening facing obliquely upward, and the push-off piece rotates to the side of the hook body away from the opening, and then starts to hang the rope and lift the object; S3, lift the object on the lifting rope to the designated position; S4, start the driving mechanism and drive the hook body and the push-off member to rotate in opposite directions. When the hook body passes through the through opening, the opening faces obliquely downward, so that the rope hanging on the hook head can be detached through the opening.

10. The automatic unloading method according to claim 9, characterized in that: Before implementing step S2, the method further includes the following steps: Providing a supporting mechanism, the supporting mechanism comprising a fluid, a supporting portion, a charging and pumping system, and a pipeline; The charging and pumping system is fixed on the assembly frame, the supporting part is covered on the inner surface of the hook head for hanging the lifting rope, and the pipeline is connected between the supporting part and the charging and pumping system.

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