Crane hook

Abstract

A crane hook belongs to the technical field of cranes and comprises a U-shaped steel part and a movable plate, the movable plate is mounted in the U-shaped steel part, a plurality of mounting holes are formed in the outer surface of the U-shaped steel part in a penetrating manner, a plurality of through holes are formed in the outer surface of the movable plate, and long-rod bolts are fixedly mounted between the mounting holes and the corresponding through holes. A lifting chain hanging ring is fixedly installed on the upper surface of the movable plate, two fixing plates are fixedly installed on the lower surface of the movable plate, a cable pulley is rotatably installed between the two fixing plates, and a lifting hook body is installed on the lower surface of the U-shaped steel piece. The positions of the sling chain hanging ring and the mooring rope pulley are changed by changing the positions of the sling chain hanging ring and the mooring rope pulley so as to meet the requirement for switching use between a sling chain and a mooring rope of a crane, and due to the design, the applicability of the crane hook is improved, the actual requirement is better met, and great convenience is brought to work.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and in particular relates to a crane hook. Background Art

[0002] The crane hook is a vital component in lifting machinery. It is responsible for connecting the lifting object and the crane itself to ensure the smooth progress of the entire lifting process.

[0003] After searching, the Chinese authorized patent in the relevant field, the patent publication number is: CN219259322U, and the patent name is: A crane hook, whose structure specifically includes a hook body, a fixing rod is longitudinally fixedly connected to the middle part of the hook body, one end of the fixing rod is provided with a connecting plate for connecting to the crane boom, and anti-dropping components are symmetrically arranged on the fixing rod about the center interval of the fixing rod, and the anti-dropping components are used to close the opening of the hook body to prevent the heavy object from being unhooked; when the crane is lifting the heavy object, the worker presses the anti-dropping plate to open the opening of the hook part, the heavy object is hooked on the two hook parts through the connecting rope, and then the anti-dropping plate is loosened to close the opening of the anti-dropping plate, and under the action of the tension spring, one end of the anti-dropping plate can be tightly attached to the inner side of the hook part, and at the same time, the clamping block is inserted into the clamping groove to prevent the end of the anti-dropping plate from moving, so that the connecting rope in the hook part will not fall off, and the heavy object will not be unhooked.

[0004] When handling heavy or large objects, cranes usually use cables and hooks in combination, while when handling situations that require more precise control or smaller objects, they tend to use a combination of chains and hooks. However, the design of the crane hook in the above-mentioned prior art has limitations, and it is not convenient to flexibly switch between cables and chains, resulting in limited applicability. For this reason, another crane hook is provided to solve this problem. Utility Model Content

[0005] In view of the problem that the crane hook in the prior art is not convenient for flexible switching between cables and chains and has poor applicability, the utility model provides a crane hook, which uses a long rod bolt to detachably connect the movable plate and the U-shaped steel part, and installs a chain hanging ring and a cable pulley on the upper and lower surfaces of the movable plate respectively. In practical applications, the position of the chain hanging ring and the cable pulley can be changed by adjusting the upper side of the movable plate to adapt to the need to switch between the crane's chain and cable. Such a design not only improves the applicability of the crane hook, but also better meets actual needs, brings great convenience to work, and effectively solves the problem that the crane hook in the prior art is not convenient for flexible switching between cables and chains and has poor applicability. Its specific technical solution is as follows:

[0006] A crane hook comprises a U-shaped steel member and a movable plate, wherein the movable plate is installed in the U-shaped steel member, a plurality of mounting holes are formed through the outer surface of the U-shaped steel member, a plurality of through openings are formed on the outer surface of the movable plate, long rod bolts are fixedly installed between the mounting holes and the corresponding through openings, a hanging chain ring is fixedly installed on the upper surface of the movable plate, two fixed plates are fixedly installed on the lower surface of the movable plate, a cable pulley is rotatably installed between the two fixed plates, and a hook body is installed on the lower surface of the U-shaped steel member.

[0007] In the above technical solution, two force-bearing plates are fixedly installed on the top of the U-shaped steel member, and the lower surface of the force-bearing plate is in contact with the upper surface of the movable plate.

[0008] In the above technical solution, a lifting support block is fixedly installed on the lower surface of the U-shaped steel part, and the hook body includes a T-shaped hanging column and a U-shaped hook. The top end of the T-shaped hanging column is lifted in the lifting support block, and the U-shaped hook is fixedly installed on the bottom end of the T-shaped hanging column.

[0009] In the above technical solution, the outer surface of the T-shaped hanging column is provided with a thread, and a locking nut is screwed on the thread. The outer surface of the T-shaped hanging column is sleeved with a limit plate, and the lower surface of the limit plate is symmetrically provided with conical grooves, and the two ends of the U-shaped hook are respectively clamped in the corresponding conical grooves.

[0010] In the above technical solution, the top end of the T-shaped suspension column is rotatably installed in the suspension support block.

[0011] Compared with the prior art, the crane hook of the utility model has the following beneficial effects:

[0012] The utility model adopts long-rod bolts to detachably connect the movable plate and the U-shaped steel part, and respectively installs a chain hanging ring and a cable pulley on the upper and lower surfaces of the movable plate. In practical applications, the positions of the chain hanging ring and the cable pulley can be changed by adjusting the upper surface of the movable plate to adapt to the need of switching between the chain and the cable of the crane. Such a design not only improves the applicability of the crane hook, but also better meets actual needs, bringing great convenience to work. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the first usage configuration of the utility model.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0015] Figure 3 It is a schematic diagram of the structure of the lifting support block of the utility model.

[0016] Figure 4It is a schematic diagram of the U-shaped limiting plate structure of the utility model.

[0017] Figure 5 This is a schematic diagram of the second usage configuration of the utility model.

[0018] Figure 1-5 Among them: 1. U-shaped steel parts; 11. long rod bolts; 12. load-bearing plates; 13. lifting brackets; 14. mounting holes; 2. movable plates; 21. hanging chain rings; 22. fixed plates; 23. cable pulleys; 24. through holes; 3. hook bodies; 31. T-shaped hanging columns; 311. threads; 32. U-shaped hooks; 4. limit plates; 41. conical grooves; 5. tightening nuts. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0021] A crane hook comprises a U-shaped steel member 1 and a movable plate 2, wherein the movable plate 2 is installed in the U-shaped steel member 1, a plurality of mounting holes 14 are formed through the outer surface of the U-shaped steel member 1, a plurality of through openings 24 are formed on the outer surface of the movable plate 2, a long rod bolt 11 is fixedly installed between the mounting holes 14 and the corresponding through openings 24, a chain hanging ring 21 is fixedly installed on the upper surface of the movable plate 2, two fixed plates 22 are fixedly installed on the lower surface of the movable plate 2, a cable pulley 23 is rotatably installed between the two fixed plates 22, and a hook body 3 is installed on the lower surface of the U-shaped steel member 1;

[0022] like Figure 2 As shown, the counterweight hook in this state is suitable for use with a lifting chain. When in use, the lifting chain can be connected by passing it through the lifting chain ring 21. When it needs to be used with a wire cable, first remove the long rod bolt 11 to release the fixation of the movable plate 2, then take the movable plate 2 out of the U-shaped steel part 1, turn it upside down and swap its position so that the cable pulley 23 faces upward, and then install the movable plate 2 into the U-shaped steel part 1, so that the through port 24 is connected to the corresponding mounting hole 14, and then use the long rod bolt 11 to fix the movable plate 2 in the U-shaped steel part 1 again. The adjusted state is as shown in FIG. Figure 5As shown, the entire adjustment process is simple and convenient to operate. Compared with the crane hook in the prior art, it not only improves the applicability of the crane hook, but also better meets actual needs, bringing great convenience to work.

[0023] It is worth noting that in order to reduce the load-bearing capacity of the long-rod bolt 11 and prevent it from bending and causing difficulty in disassembly, two load-bearing plates 12 are fixedly installed on the top of the U-shaped steel member 1. Figure 1 As shown, after installation, the lower surface of the load-bearing plate 12 fits tightly with the upper surface of the movable plate 2. When the hook of the crane is used, the load-bearing plate 12 can effectively share the load-bearing of the long rod bolt 11, thereby avoiding the bending of the long rod bolt 11 due to excessive load, thereby ensuring the stability and safety of the crane hook.

[0024] Specifically, if Figure 1 As shown, a lifting bracket 13 is fixedly mounted on the lower surface of the U-shaped steel member 1. The shape of the lifting bracket 13 is as follows: Figure 3 As shown, the hook body 3 includes a T-shaped hanging column 31 and a U-shaped hook 32. The top of the T-shaped hanging column 31 is hoisted in the hoisting support block 13, and the U-shaped hook 32 is fixedly installed at the bottom of the T-shaped hanging column 31. The outer surface of the T-shaped hanging column 31 is provided with a thread 311, and a tightening nut 5 is screwed and installed at the thread 311. The outer surface of the T-shaped hanging column 31 is sleeved with a limit plate 4. The shape of the limit plate 4 is as shown in FIG. Figure 4 As shown, the lower surface of the limiting plate 4 is symmetrically provided with conical grooves 41, and the two ends of the U-shaped hook 32 are respectively clamped in the corresponding conical grooves 41;

[0025] When lifting cargo, refer to Figure 1 or Figure 5 As shown in, first, it is necessary to rotate the locking nut 5 to move it upward to release the clamping state of the limit plate 4, then move the limit plate 4 upward to open the rope hanging space of the U-shaped hook 32, and then hang the cable inside the U-shaped hook 32. After completion, the limit plate 4 is reset and moved downward to ensure that the conical groove 41 of the limit plate 4 fits tightly between the two ends of the U-shaped hook 32, and finally, fix the limit plate 4 in the appropriate position by the locking nut 5. In this way, the rope hanging position of the U-shaped hook 32 will be completely closed, and even if the cargo shakes during the lifting process, the cable will not fall off the U-shaped hook 32, thereby ensuring the stability and safety of the crane hook.

[0026] Finally, in order to facilitate the U-shaped hook 32 to be hooked with the cargo cable from different angles, it is necessary to rotate the top of the T-shaped hanging column 31 and install it in the lifting bracket 13, so that the U-shaped hook 32 can rotate 360°, thereby facilitating the hooking with the cargo cable from different angles.

Claims

1. A crane hook, comprising a U-shaped steel member (1) and a movable plate (2), wherein the movable plate (2) is installed in the U-shaped steel member (1), characterized in that: The outer surface of the U-shaped steel member (1) is penetrated by a plurality of mounting holes (14), the outer surface of the movable plate (2) is provided with a plurality of through openings (24), a long rod bolt (11) is fixedly installed between the mounting holes (14) and the corresponding through openings (24), a hanging chain ring (21) is fixedly installed on the upper surface of the movable plate (2), two fixed plates (22) are fixedly installed on the lower surface of the movable plate (2), a cable pulley (23) is rotatably installed between the two fixed plates (22), and a hook body (3) is installed on the lower surface of the U-shaped steel member (1).

2. A crane hook according to claim 1, characterized in that: Two force-bearing plates (12) are fixedly mounted on the top of the U-shaped steel member (1), and the lower surface of the force-bearing plates (12) is in contact with the upper surface of the movable plate (2).

3. A crane hook according to claim 1 or 2, characterized in that: A lifting support block (13) is fixedly mounted on the lower surface of the U-shaped steel member (1); the lifting hook body (3) comprises a T-shaped hanging column (31) and a U-shaped hook (32); the top end of the T-shaped hanging column (31) is lifted in the lifting support block (13), and the U-shaped hook (32) is fixedly mounted on the bottom end of the T-shaped hanging column (31).

4. A crane hook according to claim 3, characterized in that: The outer surface of the T-shaped suspension column (31) is provided with a thread (311), and a locking nut (5) is screwed and installed at the thread (311). The outer surface of the T-shaped suspension column (31) is sleeved with a limit plate (4), and the lower surface of the limit plate (4) is symmetrically provided with conical grooves (41), and the two ends of the U-shaped hook (32) are respectively clamped in the corresponding conical grooves (41).

5. A crane hook according to claim 3, characterized in that: The top end of the T-shaped suspension column (31) is rotatably mounted in the suspension support block (13).

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