Automatic unhooking lifting appliance

Abstract

The utility model discloses an automatic unhooking lifting appliance which comprises a lifting hook assembly, the lifting hook assembly comprises two lifting plates, a lifting handle and a lifting hook, the two lifting plates are oppositely arranged, the upper end and the lower end of each lifting plate are connected through a fixing pin, the lifting hook is connected with the lifting handle, and the connecting portion of the lower portion of the lifting handle and the lifting hook is rotatably connected to the fixing pin located at the lower end of the lifting plate in a sleeved mode. A clamping groove is formed in the side face of the upper portion of the hanging handle, and a groove opening of the clamping groove faces downwards. The unhooking assembly comprises a driving mechanism and a clamping piece, the driving mechanism is arranged on the two hanging plates, and the driving mechanism can drive the clamping piece to move up and down so as to drive the clamping piece to move between the clamping groove and the clamping groove; when the driving mechanism is clamped into the clamping groove, the hanging handle is locked at the moment by means of friction between the clamping piece and the clamping groove and is not prone to rotating and unhooking, and due to the fact that the driving mechanism and the clamping piece are installed between the two hanging plates and the groove opening is downward, the structure also facilitates labor-saving and reliable operation of the driving mechanism.

Description

Technical Field

[0001] The utility model relates to an automatic unhooking sling and belongs to the technical field of unhooking slings. Background Art

[0002] During the construction of traditional large anti-slip piles, due to the complex environment, the top of the steel cage is often lower than the hole mouth. The traditional method of lifting the steel cage relies on manual operation to remove the hook inside the pile hole. This method is not only inefficient, but also has great safety hazards. Inside the pile hole, construction workers face multiple challenges such as narrow space, limited vision, and harsh working environment. If they are not careful, they may fall, collide, or other safety accidents. In addition, working in the pile hole for a long time also places extremely high demands on the physical strength and energy of the construction workers, further increasing the difficulty of construction and safety risks.

[0003] The existing document discloses a hook device (CN220578724U) that can automatically unhook, which includes two groups of support plates, the two groups of support plates are connected by connecting bolts, the lifting ring is installed between the two groups of support plates by lifting bolts, the lifting ring is provided with a lifting hole, the hook assembly includes a lifting handle and a hook, the connection position of the lifting handle and the hook is provided with a pin hole for the rotation shaft bolt to pass through, the rotation shaft bolt is installed at the lower end of the support plate, the hook assembly is rotatably arranged between the two groups of support plates, the outer side of the support plate is provided with an anti-unhook mechanism for closing the opening of the hook, one of the support plates is provided with an ear plate on the side close to the opening of the hook, and the ear plate is provided with a magnet for adsorbing the lifting handle. The hook device can realize automatic unhooking, reduce labor intensity, and improve operation efficiency.

[0004] However, the existing hook device can only adapt to lighter hoisting objects, while objects such as steel cages hoisted in the construction field are usually heavy. The use of existing hoisting devices is not reliable and may cause the hook to come off during the hoisting process. Utility Model Content

[0005] Based on the above, the utility model provides an automatic unhooking sling which is easy to operate, stable and reliable, so as to overcome the deficiencies of the prior art.

[0006] The technical solution of the utility model is: an automatic unhooking sling, comprising:

[0007] A hook assembly, comprising a hanging plate, a hanging handle and a hanging hook, wherein two hanging plates are arranged opposite to each other and connected at upper and lower ends by a fixing pin, the hanging hook is connected to the hanging handle, the connecting part between the lower part of the hanging handle and the hanging hook can be rotatably sleeved on the fixing pin at the lower end of the hanging plate, and a slot is provided on the upper side of the hanging handle, and the notch of the slot faces downward;

[0008] The unhooking component comprises a driving mechanism and a clamping piece, wherein the driving mechanism is arranged on the two hanging plates, and the driving mechanism can drive the clamping piece to move up and down, thereby driving the clamping piece to move between being clamped into the clamping slot and being separated from the clamping slot.

[0009] In one example, the driving mechanism includes a limit member and a linear motor. The limit member is vertically fixed between the two hanging plates. A limit groove is provided on the limit member. The telescopic shaft of the linear motor passes through the limit groove and is connected to the clamping member.

[0010] In one example, an electromagnet is provided in the card slot, which can be adsorbed on the card holder after being energized.

[0011] In one example, a controller and a wireless receiver are provided in the hanging handle, the wireless receiver is electrically connected to the controller, and the controller is electrically connected to the electromagnet and the driving mechanism.

[0012] In one example, a notch is provided on the side of the hanging handle corresponding to the driving mechanism and the clamping member.

[0013] In one example, a connector is provided at the upper end of the hanging plate, and a hanging ring is provided on the connector.

[0014] The beneficial effects of the utility model are as follows: the utility model provides a slot with a notch facing downward on the hanging handle, installs a driving mechanism and a clamping piece on the hanging plate, and drives the clamping piece to move up and down through the driving mechanism, thereby driving the clamping piece to move between being inserted into the slot and being separated from the slot. When it is inserted into the slot, the hanging handle is locked by the friction between the clamping piece and the slot, and will not easily rotate and unhook; when the clamping piece is separated from the slot, the hanging handle is not locked at this time, and the hook can be rotated and unhooked under the action of gravity. Moreover, since the driving mechanism and the clamping piece are installed between the two hanging plates, and the notch is downward, this structure also facilitates the labor-saving and reliable operation of the driving mechanism. In addition, the utility model provides an electromagnet in the slot, and the electromagnet can be adsorbed on the clamping piece when power is turned on, thereby further increasing the load that the hook can hoist. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of an automatic unhooking spreader;

[0016] Figure 2 It is a cross-sectional view of the automatic unhooking spreader;

[0017] Figure 3 It is a schematic diagram of the automatic unhooking sling in the unhooking state;

[0018] Description of reference numerals:

[0019] 1 hanging plate, 2 hanging handle, 3 hook, 4 fixing pin, 5 slot, 6 linear motor, 7 limiter, 8 holder, 9 electromagnet, 10 controller, 11 connector, 12 lifting ring, 13 notch. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0021] See also Figures 1 to 3 , this embodiment provides an automatic unhooking sling, including a hook assembly and an unhooking assembly.

[0022] The hook assembly includes a hanging plate 1, a hanging handle 2 and a hook 3. The two hanging plates 1 are arranged opposite to each other, and the upper and lower ends are fixedly connected by a fixing pin 4. A connector 11 is provided at the upper end of the hanging plate 1, and a rotatable hanging ring 12 is provided on the connector 11; the hook 3 is connected to the hanging handle 2, and the connecting part of the lower part of the hanging handle 2 and the hook 3 can be rotatably sleeved on the fixing pin 4 located at the lower end of the hanging plate 1. A card slot 5 is provided on the upper side of the hanging handle 2, and the notch of the card slot 5 faces downward.

[0023] The unhooking assembly includes a driving mechanism and a clamping member 8. A notch 13 is provided on the side of the hanging handle 2 corresponding to the driving mechanism and the clamping member 8 so that there is no interference between the driving mechanism, the clamping member 8 and the hanging handle 2. The driving mechanism is installed on the two hanging plates 1. The driving mechanism includes a limiter 7 and a linear motor 6. The limiter 7 is vertically fixedly installed between the two hanging plates 1. The limiter 7 is provided with a limiter groove. The telescopic shaft of the linear motor 6 is connected to the clamping member 8 after passing through the limiter groove. Through the telescopic work of the telescopic shaft, the clamping member 8 can be driven to move up and down, thereby driving the clamping member 8 to move between being inserted into the slot 5 and being disengaged from the slot 5. When the clamping member 8 is inserted into the slot 5, the hanging handle 2 is locked at this time, so that the hook 3 will not rotate and unhook. When the clamping member 8 is disengaged from the slot 5, the hanging handle 2 is not locked at this time, and the hook 3 can be rotated and unhooked under the action of gravity. The limiter 7 can ensure that the telescopic shaft is not skewed and works reliably.

[0024] In order to further lock the lifting handle 2, that is, to increase the load that the hook 3 can lift, an electromagnet 9 is provided in the slot 5, and a controller 10 and a wireless receiver are provided in the lifting handle 2. The wireless receiver is used to receive control instructions. The wireless receiver is electrically connected to the controller 10, and the controller 10 is electrically connected to the electromagnet 9 and the driving mechanism. The controller 10 can realize the power on and off control of the electromagnet 9 and the telescopic action control of the driving mechanism.

[0025] In this embodiment, the automatic unhooking sling is made of high-strength alloy steel. After assembly, the sling is subjected to a load test to test the maximum load capacity and durability of the sling to ensure the safe use of the sling and to ensure that the sling is in good working condition before use and can complete the lifting task safely and effectively.

[0026] Usage: Before lifting, the lifting device is connected to the automatic unhooking sling through a wire rope or other lifting rope, and the hook 3 is connected to the lifting ear of the object to be lifted, such as: the lifting ear of the steel cage is connected to the hook 3. After starting the lifting device, the automatic unhooking sling is gradually stressed, and the hook 3 rotates around the fixed pin 4. The driving mechanism drives the clamping part 8 to be clamped into the slot 5, and the electromagnet 9 is energized and adsorbed on the clamping part 8. The automatic unhooking sling lifts the object to be lifted or hoisted through the hook 3. When the object is hoisted in place Finally, the remote machine remote control controller 10 is used to make the electromagnet 9 lose its magnetism, so that the driving mechanism disengages the clamping piece 8 from the clamping slot 5, and the lifting device automatically unhooks the sling and lowers it about 100 mm. At this time, the hook 3 is no longer subjected to force. At this time, under the action of the deadweight of the lifting handle 2, the hook 3, the lifting handle 2 and the hanging plate 1 rotate through the fixing pin 4 at the lower end, so that the hook 3 is automatically disengaged from the lifting ear of the object to be lifted. After disengagement, the object can be lifted out of the working area by the lifting device, thereby completing the lifting operation.

[0027] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An automatic unhooking sling, characterized in that: include: A hook assembly comprises a hanging plate (1), a hanging handle (2) and a hanging hook (3), wherein the two hanging plates (1) are arranged opposite to each other and connected at upper and lower ends by a fixing pin (4), the hanging hook (3) is connected to the hanging handle (2), the connecting portion between the lower part of the hanging handle (2) and the hanging hook (3) can be rotatably sleeved on the fixing pin (4) located at the lower end of the hanging plate (1), and a slot (5) is provided on the upper side surface of the hanging handle (2), and the notch of the slot (5) faces downward; The unhooking assembly comprises a driving mechanism and a clamping member (8), wherein the driving mechanism is arranged on the two hanging plates (1), and the driving mechanism can drive the clamping member (8) to move up and down, thereby driving the clamping member (8) to move between being clamped into the clamping slot (5) and being disengaged from the clamping slot (5).

2. The automatic unhooking sling according to claim 1, characterized in that: The driving mechanism comprises a limiter (7) and a linear motor (6); the limiter (7) is vertically fixed between the two hanging plates (1); a limiter groove is provided on the limiter (7); and a telescopic shaft of the linear motor (6) is connected to the clamping member (8) after passing through the limiter groove.

3. The automatic unhooking sling according to claim 1, characterized in that: An electromagnet (9) is provided in the clamping slot (5) and can be adsorbed on the clamping member (8) after being energized.

4. The automatic unhooking sling according to claim 3, characterized in that: A controller (10) and a wireless receiver are provided in the hanging handle (2); the wireless receiver is electrically connected to the controller (10); and the controller (10) is electrically connected to the electromagnet (9) and the driving mechanism.

5. The automatic unhooking sling according to claim 1, characterized in that: A notch (13) is provided on the side of the hanging handle (2) corresponding to the driving mechanism and the clamping member (8).

6. The automatic unhooking sling according to claim 1, characterized in that: A connector (11) is provided at the upper end of the hanging plate (1), and a hanging ring (12) is provided on the connector (11).

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