Automatic hook hanging device for lifting

Abstract

The utility model relates to the technical field of travelling crane hoisting, disclose a kind of travelling crane hoisting automatic hanging and paying hook device, including shell, the inner bottom side of shell is provided with first limit sliding slot, the inside sliding connection of first limit sliding slot has sliding plate one, the top fixed connection of sliding plate one has rack one, the inner wall of shell is fixedly connected with motor, the output of motor is fixedly connected with gear one, the side of rack one is engaged with gear one, one end of rack one is fixedly connected with connecting arm one, the bottom of shell is provided with paying hook. In the utility model, by motor drive, connecting arm one can be inserted into the middle part of paying hook, prevent paying hook from falling off, i. e. it can realize automatic hook, by two rack two and gear two, further realize the clamping of the boom of paying hook outside the bottom of shell by connecting arm two, connecting arm two cooperates with connecting arm one, further improve the stability of paying hook when using.

Description

Technical Field

[0001] This utility model relates to the field of crane lifting technology, and in particular to an automatic hook attachment device for crane lifting. Background Technology

[0002] In industrial sectors such as metallurgy and heavy manufacturing, overhead cranes are core lifting equipment, and the safety and efficiency of their lifting operations directly affect the smoothness of the production process and the safety of personnel. Among them, the engagement and disengagement of the hook and the workpiece lifting point is a key link in overhead crane operation, and in traditional operation modes, the hooking and unhooking operations are mostly performed manually.

[0003] A search revealed that patent document CN201210566308.3 discloses an automatic hooking and unhooking device, including a hook assembly, a hooking and unhooking drive assembly, and a housing. The hook assembly includes a hook and a boom. The hooking and unhooking drive assembly includes at least a drive component and a return component. The return component has a pre-tightening force for driving the hook to separate. Under the action of the upward force generated by the upward relative movement of the boom, the drive component overcomes the pre-tightening force of the return component and drives the resistance arm of half hook I and the resistance arm of half hook II to move relative to each other to form a hook structure for supporting the crown head. This invention requires hooking before lifting and unhooking after landing. It utilizes the upward relative movement of the boom fixed to the workpiece to drive the hook to engage with the lower part of the crown head of the boom and disengage from the crown head, realizing automatic hooking and unhooking. The hooking and unhooking is sensitive and stable. During the lifting process, an external force keeps the hook locked, resulting in high reliability and improved work efficiency. It is suitable for lifting high-risk or large workpieces with high safety requirements, such as electroslag ingots.

[0004] The aforementioned prior art uses a hook-and-release drive assembly and its included drive components and return components to achieve hooking before lifting and unhooking after landing. It utilizes the upward relative movement of the lifting rod fixed to the workpiece to drive the hook to engage with and disengage from the crown head of the lifting rod, thus achieving automatic hooking and unhooking. However, this method relies on structures such as springs and resistance arms. The durability of the springs is poor, resulting in a low service life. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automatic hook-attaching device for crane lifting, which aims to improve the problem of poor durability caused by the reliance on springs and resistance arms to achieve hooking and unhooking in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic hook attachment device for crane lifting, comprising a housing, a first limiting groove provided on one side of the inner bottom of the housing, a sliding plate slidably connected inside the first limiting groove, a rack fixedly connected to the top of the sliding plate, a motor fixedly connected to the inner wall of the housing, a gear fixedly connected to the output end of the motor, one side of the rack meshing with the gear, a connecting arm fixedly connected to one end of the rack, and a hook provided at the bottom of the housing.

[0007] As a further description of the above technical solution:

[0008] A lifting ring is provided at the top of the housing.

[0009] As a further description of the above technical solution:

[0010] A lifting rod is provided in the middle of the auxiliary hook, a crown-shaped head is provided at the top of the lifting rod, and a clearance hole is provided at the bottom of the housing.

[0011] As a further description of the above technical solution:

[0012] The coronal head is frustum-shaped, with the top diameter of the coronal head being larger than the bottom diameter. The diameter of the clearance hole is not smaller than the bottom diameter of the coronal head. The diameter of the hanger is smaller than the bottom diameter of the coronal head. The bottom of the coronal head can be connected to the upper surface of the connecting arm.

[0013] As a further description of the above technical solution:

[0014] A connecting plate is fixedly connected to the end of the connecting arm away from the sliding plate. A second sliding plate is fixedly connected to the middle of the connecting plate. A second gear and a mounting hole are provided at the bottom of the housing. The second gear is located in the mounting hole. A second limiting groove is fixedly connected to one side of the bottom outer wall of the housing. A groove plate is slidably connected to the middle of the second limiting groove. A rack is fixedly connected to the adjacent sides of the groove plate and the second sliding plate. The adjacent sides of the two racks are respectively meshed and connected to the two sides of the gear. A connecting arm is fixedly connected to one end of the groove plate.

[0015] As a further description of the above technical solution:

[0016] A clearance groove is provided on one side of the sliding plate adjacent to the shell, and the rack on one side of the sliding plate is located in the clearance groove.

[0017] As a further description of the above technical solution:

[0018] Clamping pads are provided on the inner sides of both connecting arm 2 and connecting arm 1.

[0019] As a further description of the above technical solution:

[0020] Both connecting arm one and connecting arm two are U-shaped.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the connecting arm can be reciprocated by a motor drive, and the connecting arm can be inserted into the middle of the auxiliary hook. The crown head of the connecting arm acts as a limit to prevent the auxiliary hook from falling off. The motor drives the connecting arm to insert into the bottom of the crown head, thus realizing automatic hooking.

[0023] 2. In this utility model, when the connecting arm one reciprocates, it can drive the slide plate to reciprocate through two racks two and gear two, thereby enabling the connecting arm two to clamp the hook rod outside the bottom of the housing. The connecting arm two cooperates with the connecting arm one to further improve the stability of the hook during use. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of an automatic hook-attaching device for crane lifting proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the housing of an automatic hook-attaching device for crane lifting proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the slide plate structure of an automatic hook attachment device for crane lifting proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the rack and clamping pad of an automatic hook-attaching device for crane lifting proposed in this utility model.

[0028] Legend:

[0029] 1. Lifting ring; 101. Clearance hole; 2. Housing; 3. Auxiliary hook; 301. Crown head; 302. Lifting rod; 4. Motor; 5. Gear 1; 6. Rack 1; 7. Slide plate 1; 8. First limit groove; 9. Connecting arm 1; 901. Connecting plate; 902. Clamping pad; 10. Slide plate 2; 11. Gear 2; 12. Slide plate; 13. Second limit groove; 14. Connecting arm 2; 15. Rack 2. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figures 1-2 An embodiment of this utility model provides an automatic hook attachment device for crane lifting, comprising a housing 2, a first limiting groove 8 provided on one side of the inner bottom of the housing 2, a sliding plate 7 slidably connected inside the first limiting groove 8, a rack 6 fixedly connected to the top of the sliding plate 7, a motor 4 fixedly connected to the inner wall of the housing 2, a gear 5 fixedly connected to the output end of the motor 4, one side of the rack 6 meshing with the gear 5, a connecting arm 9 fixedly connected to one end of the rack 6, and a hook 3 provided at the bottom of the housing 2.

[0032] Specifically, when hooking the hook 3, the hook 3 is inserted into the bottom of the housing 2. The motor 4 drives the gear 5 to drive the rack 6, which in turn causes the connecting arm 9 to reciprocate. The connecting arm 9 can be inserted into the middle of the hook 3. Since the top of the hook 3 has a crown head 301, the connecting arm 9 limits the crown head 301 to prevent the hook 3 from falling off. The motor 4 drives the connecting arm 9 to insert into the bottom of the crown head 301, thus achieving automatic hooking. Compared with the existing technology that relies on springs and resistance arms to achieve hooking and unhooking, the structure of this utility model is simpler and more durable, and the degree of automation is higher. The connecting arm 9 can reciprocate, which can automatically hook and unhook. The motor 4 can be a servo motor. The circuit system that controls the operation of the servo motor is existing technology and will not be described in detail.

[0033] A lifting ring 1 is provided on the top of the housing 2. The housing 2 can be connected to the overhead crane mechanism of a conventional overhead crane hoisting device via the lifting ring 1.

[0034] refer to Figures 2-3 The auxiliary hook 3 has a lifting rod 302 in the middle, a crown head 301 at the top of the lifting rod 302, and a clearance hole 101 at the bottom of the housing 2. The auxiliary hook 3 is a prior art structure, and the structure of its lifting rod 302 and crown head 301 makes it easy for the connecting arm 9 to support the auxiliary hook 3 and facilitates hooking.

[0035] The crown head 301 is frustum-shaped, with its top diameter larger than its bottom diameter. The diameter of the clearance hole 101 is not smaller than the bottom diameter of the crown head 301, and the diameter of the lifting rod 302 is smaller than the bottom diameter of the crown head 301. The bottom of the crown head 301 can be connected to the upper surface of the connecting arm 9. The dimensions of the clearance hole 101, the lifting rod 302, and the crown head 301 further facilitate the support of the auxiliary hook 3 by the connecting arm 9.

[0036] refer to Figures 2-4 A connecting plate 901 is fixedly connected to the end of the connecting arm 9 away from the sliding plate 7. A sliding plate 10 is fixedly connected to the middle of the connecting plate 901. A gear 11 and a mounting hole are provided at the bottom of the housing 2. The gear 11 is located in the mounting hole. A second limiting groove 13 is fixedly connected to one side of the bottom outer wall of the housing 2. A groove plate 12 is slidably connected to the middle of the second limiting groove 13. A rack 15 is fixedly connected to the adjacent sides of the groove plate 12 and the sliding plate 10. The adjacent sides of the two racks 15 are respectively meshed and connected to the two sides of the gear 11. A connecting arm 14 is fixedly connected to one end of the groove plate 12.

[0037] Specifically, to further improve the stability of the hook 3 during use, the connecting arm 9 can reciprocate to drive the connecting plate 901 and the sliding plate 10 during reciprocating motion. Furthermore, the two racks 15 and the gear 11 can drive the sliding plate 12 to reciprocate, thereby enabling the connecting arm 14 to clamp the lifting rod 302 of the hook 3 outside the bottom of the housing 2. The cooperation between the connecting arm 14 and the connecting arm 9 can avoid the problem that the lifting rod 302 is prone to swaying from the side away from the connecting arm 9 when only the connecting arm 9 supports the crown head 301. The cooperation between the connecting arm 14 and the connecting arm 9 further improves the clamping stability of the lifting rod 302.

[0038] A clearance groove is provided on one side of the slide plate 12 adjacent to the housing 2, and the rack 15 on one side of the slide plate 12 is located in the clearance groove. The clearance groove can prevent the rack 15 from directly contacting the housing 2 and creating a gap, and the reciprocating motion of the slide plate 12 in the second limiting slide groove 13 is more stable.

[0039] refer to Figure 4 Both connecting arm 2 14 and connecting arm 1 9 are provided with clamping pads 902 on their inner sides. The clamping pads 902 are tightly fitted with the lifting rod 302 of the auxiliary hook 3, which further improves the stability of the auxiliary hook 3.

[0040] Both connecting arm 19 and connecting arm 214 are U-shaped. The U-shaped connecting arm 19 and connecting arm 214 can form a clamp on both sides of the auxiliary hook 3 to support the auxiliary hook 3.

[0041] Working principle: When hooking the hook 3, insert the hook 3 into the bottom of the housing 2. The motor 4 drives the gear 5 to drive the rack 6, which in turn causes the connecting arm 9 to move toward the relief hole 101. The connecting arm 9 can then be inserted into the middle lifting rod 302 of the hook 3 to complete the hooking. When the connecting arm 9 moves, it can drive the connecting plate 901 and the sliding plate 10. Then, through the two racks 15 and the gear 11, it can drive the sliding plate 12 to reciprocate. The connecting arm 14 clamps the lifting rod 302 of the hook 3 outside the bottom of the housing 2, further improving the stability of the hook 3. When it is necessary to unhook, the motor 4 drives the connecting arm 9 to move away from the relief hole 101, and the hook 3 can be automatically unhooked.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic hook-attaching device for crane lifting, comprising a housing (2), characterized in that: A first limiting groove (8) is provided on one side of the inner bottom of the housing (2). A sliding plate (7) is slidably connected inside the first limiting groove (8). A rack (6) is fixedly connected to the top of the sliding plate (7). A motor (4) is fixedly connected to the inner wall of the housing (2). A gear (5) is fixedly connected to the output end of the motor (4). One side of the rack (6) meshes with the gear (5). A connecting arm (9) is fixedly connected to one end of the rack (6). A hook (3) is provided at the bottom of the housing (2).

2. The automatic hook-attaching device for crane lifting according to claim 1, characterized in that: A lifting ring (1) is provided on the top of the housing (2).

3. The automatic hook-attaching device for crane lifting according to claim 1, characterized in that: The auxiliary hook (3) is provided with a lifting rod (302) in the middle, the top of the lifting rod (302) is provided with a crown head (301), and the bottom of the housing (2) is provided with a clearance hole (101).

4. The automatic hook-attaching device for crane lifting according to claim 3, characterized in that: The coronal head (301) is frustum-shaped, and the top diameter of the coronal head (301) is larger than the bottom diameter. The diameter of the relief hole (101) is not smaller than the bottom diameter of the coronal head (301). The diameter of the hanger (302) is smaller than the bottom diameter of the coronal head (301). The bottom of the coronal head (301) can be connected to the upper surface of the connecting arm (9).

5. The automatic hook-attaching device for crane lifting according to claim 1, characterized in that: The connecting arm 1 (9) is fixedly connected to a connecting plate (901) at one end away from the sliding plate 1 (7). The connecting plate 2 (10) is fixedly connected to the middle of the connecting plate (901). The bottom of the housing (2) is provided with a gear 2 (11) and a mounting hole. The gear 2 (11) is located in the mounting hole. A second limiting slide groove (13) is fixedly connected to one side of the bottom outer wall of the housing (2). A slide plate (12) is slidably connected to the middle of the second limiting slide groove (13). A rack 2 (15) is fixedly connected to the adjacent sides of the slide plate (12) and the sliding plate 2 (10). The adjacent sides of the two racks 2 (15) are respectively meshed and connected to the two sides of the gear 2 (11). The connecting arm 2 (14) is fixedly connected to one end of the slide plate (12).

6. The automatic hook-attaching device for crane lifting according to claim 5, characterized in that: The slide plate (12) is provided with a clearance groove on one side of the adjacent shell (2), and the rack (15) on one side of the slide plate (12) is located in the clearance groove.

7. The automatic hook-attaching device for crane lifting according to claim 5, characterized in that: Clamping pads (902) are provided on the inner sides of both connecting arm 2 (14) and connecting arm 1 (9).

8. The automatic hook-attaching device for crane lifting according to claim 1, characterized in that: Both connecting arm one (9) and connecting arm two (14) are U-shaped.

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