Dead weight expansion structure of lifting hook

Abstract

The utility model discloses a lifting hook self-weight expansion structure which comprises a lifting hook, a balance weight is arranged on the lifting hook, and the balance weight comprises a balance weight plate A, a plurality of balance weight plates B and a plurality of balance weight plates C; and a group of B counterweight plate mounting bolt holes and a group of B counterweight plate positioning holes are formed in the C counterweight plate. According to the utility model, through the universal modularized counterweight design, positioning and mounting interfaces are reserved; the problems that a welded balance weight plate does not have the dismounting function, the welding amount is large, and the cost is high are solved. The problems that no connector exists when the weight of an assembly type balance weight plate is increased in the later period, and extension is limited are solved.

Description

Technical Field

[0001] The utility model relates to the field of lifting hooks, in particular to a self-weight expansion structure of a lifting hook. Background Art

[0002] A lifting hook is a kind of lifting tool, which consists of components such as a hook head, a cross beam, and a pulley block. The crawler crane lifting hook is a lifting tool configured for the crane to carry loads. The main stress structure of the lifting hook determines the lifting capacity of the lifting hook, and the self-weight of the lifting hook will also directly affect the working load and stability of the crane. The stress-bearing structural components of the lifting hook are designed and selected according to national standards or supporting components, mainly including a hook head, a cross beam, a nut, a pulley shaft, a pulley, and a steel plate structure for supporting the pulley shaft and the cross beam. These structures form a basic lifting hook component. The lifting hook is required to be able to fall normally when it is empty.

[0003] When designing a lifting hook, it is necessary to calculate the minimum self-weight of the lifting hook, because factors such as the boom length, the weight of the wire rope, the number of wire ropes passed through (multiplication factor), and the safety factor will all affect the normal falling of the lifting hook in the empty-hook state. The calculation formula for the minimum hook weight (factors affecting the hook weight) is G = L × M × N × F. Among them, L (meters) is the boom length, M (kg / m) is the wire rope weight selected according to the table, N (multiplication factor) is the number of wire ropes passed through, F is the safety factor selected according to the table, and G (kg) is the minimum hook weight.

[0004] In order to meet the use of the lifting hook on different vehicles, it is necessary to design corresponding counterweights to achieve rapid changes in the self-weight of the lifting hook. The counterweights of the existing technology include welded counterweight plates and assembled counterweight plates.

[0005] The welded counterweight plate is connected to the main body of the lifting hook in a welding form, and the self-weight of the lifting hook is adjusted to the designed weight by welding the counterweight plate. However, the welded structure does not have the function of disassembly and assembly. Because the counterweight of the lifting hook is very heavy, it is necessary to increase the groove and welding during welding, and there are many technological routes, which increases the production cost.

[0006] The assembled counterweight plate is connected to the main body of the lifting hook in an assembly manner. The counterweight plate and the main body of the lifting hook are connected and assembled by bolts, and have the performance of disassembly and assembly. However, when it is necessary to increase the self-weight of the lifting hook, there are no conditions for rapid installation, and there is no available installation interface.

[0007] Therefore, it is necessary to specifically develop a new type of self-weight expansion structure for the lifting hook to overcome the above problems. Content of the Utility Model

[0008] Utility Model Objective: Aiming at the deficiencies and defects of the existing technology, the utility model provides a self-weight expansion structure of a lifting hook. Through the general modular counterweight design, positioning and installation interfaces are reserved; the problems that the welded counterweight plate does not have the function of disassembly and assembly, has a large amount of welding, and high cost are solved; the problems that there is no interface when the weight is increased later for the assembled counterweight plate and the expansion is restricted are solved.

[0009] Technical solution: The utility model is a hook self-weight expansion structure, which is characterized by: comprising a hook, on which a counterweight is provided, the counterweight comprising an A counterweight plate, a plurality of B counterweight plates and a plurality of C counterweight plates; the C counterweight plate is provided with a group of B counterweight plate mounting bolt holes and a group of B counterweight plate positioning holes.

[0010] Wherein, the A counterweight plate is provided with a group of B counterweight plate mounting bolt holes and B counterweight plate positioning holes.

[0011] Wherein, the B counterweight plate is provided with a group of C counterweight plate mounting bolt holes and C counterweight plate positioning holes.

[0012] Wherein, the C counterweight plate is provided with a group of 5 B counterweight plate mounting bolt holes and a group of 2 B counterweight plate positioning holes.

[0013] Among them, the B counterweight plate positioning hole and the C counterweight plate positioning hole are both positioning pin shaft holes.

[0014] Among them, the C counterweight plate is directly connected to one B counterweight plate, and the B counterweight plate can be extended to connect to one C counterweight plate, and the cycle continues.

[0015] Wherein, the counterweights are symmetrically arranged on both sides of the hook.

[0016] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: The utility model adds an interface with expansion function to the structure, which matches the parts on its own structure to realize the cyclic stacking and expansion installation of parts. The assembled quick combination interface is formed by blanking and simple processing, does not require a lot of welding, is simple to operate, and has low cost. A set of installation interfaces can realize multiple cyclic expansions of the counterweight plate, and quick installation can be achieved when the deadweight of the hook needs to be increased. By adding a set of interfaces, the scalability of the entire component is improved, so that a component has multiple deformation capabilities, and can obtain a wider range of applicability by simply adding parts (counterweight plates). BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a welded counterweight plate in the prior art;

[0018] Figure 2 It is a structural schematic diagram of an assembled counterweight plate in the prior art;

[0019] Figure 3 It is a schematic diagram of the structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the hook of the utility model;

[0021] Figure 5Structural schematic diagram of the installation state of the counterweight plate of the present utility model;

[0022] Figure 6 Structural schematic diagram of the interface of the C counterweight plate of the present utility model;

[0023] Figure 7 Use state diagram of the present utility model;

[0024] In the figure, 1 is the counterweight; 2 is the lifting hook; 3 is the A counterweight plate; 4 is the B counterweight plate; 5 is the C counterweight plate; 6 are the mounting bolt holes of the B counterweight plate; 7 are the positioning holes of the B counterweight plate. Specific implementation manner

[0025] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and specific implementation manners.

[0026] In view of the deficiencies of the prior art, the present utility model first designs a basic lifting hook structure, which can meet the requirements of the lifting hook for lifting loads and has all functions. Then, one or several groups of counterweights are designed, and the self-weight of the lifting hook is quickly changed through combination and assembly to meet the wider applicability of the lifting hook when used on different vehicles. Specifically as follows:

[0027] The self-weight expansion structure of the lifting hook of the present utility model includes a lifting hook 2, and a counterweight 1 is provided on the lifting hook 2. The counterweight 1 includes an A counterweight plate 3, several B counterweight plates 4 and several C counterweight plates 5; 1 group of mounting bolt holes 6 of the B counterweight plate and 1 group of positioning holes 7 of the B counterweight plate are provided on the C counterweight plate 5. Among them, 1 group of mounting bolt holes 6 of the B counterweight plate and positioning holes 7 of the B counterweight plate are provided on the A counterweight plate 3. 1 group of mounting bolt holes of the C counterweight plate and positioning holes of the C counterweight plate are provided on the B counterweight plate 4. 1 group of 5 mounting bolt holes 6 of the B counterweight plate and 1 group of 2 positioning holes 7 of the B counterweight plate are provided on the C counterweight plate 5) The positioning holes 7 of the B counterweight plate and the positioning holes of the C counterweight plate are both positioning pin holes. The C counterweight plate 5 is directly connected to 1 B counterweight plate, and the B counterweight plate can be extended to connect 1 C counterweight plate 5, and so on in a cycle. The counterweight 1 is symmetrically arranged on both sides of the lifting hook 2.

[0028] Such as Figure 3-5 , the counterweight is composed of three counterweight plates A, B, and C. The A counterweight plate is installed on the main structure of the lifting hook. There are positioning pin holes and mounting bolt holes for the B counterweight plate on the A counterweight plate. There are positioning pin holes and mounting stud holes for the C counterweight plate on the B counterweight plate. The present invention adds a group of mounting interfaces on the C counterweight plate, and the interfaces match the mounting dimensions of the B counterweight plate.

[0029] Such as Figure 6, after adding a set of B counterweight plate interfaces, the hook counterweight has new extended functions. It can expand a set of B counterweight blocks or a set of B + C counterweight blocks. In theory, multiple B + C + B + C + B +... cycles of superposition can be carried out, realizing multiple expansions of the deadweight parameter. The deadweight of the hook can be quickly upgraded and more application scenarios can be satisfied. Figure 7 The figure shows an extended hook with a set of B counterweight plates added.

[0030] The utility model adds interfaces with extended functions to match the parts on its own structure, realizing the cyclic superposition and expansion installation of parts. The assembled and quickly combined interfaces are formed by cutting and simply processed, without the need for a large amount of welding, with simple operation and low cost. A set of installation interfaces can achieve multiple cyclic expansions of the counterweight plate, which can be quickly installed when the deadweight of the hook needs to be increased. By adding a set of interfaces, the expandability of the whole component is improved, enabling a component to obtain multiple variant capabilities, and wider applicability can be obtained only by adding parts (counterweight plates).

Claims

1. A hook self-weight expansion structure, characterized in that: The invention comprises a hook (2), a counterweight (1) is arranged on the hook (2), and the counterweight (1) comprises an A counterweight plate (3), a plurality of B counterweight plates (4) and a plurality of C counterweight plates (5); the C counterweight plate (5) is provided with a group of B counterweight plate mounting bolt holes (6) and a group of B counterweight plate positioning holes (7).

2. The hook self-weight expansion structure according to claim 1, characterized in that: The A counterweight plate (3) is provided with a group of B counterweight plate mounting bolt holes (6) and B counterweight plate positioning holes (7).

3. The hook self-weight expansion structure according to claim 2, characterized in that: The B counterweight plate (4) is provided with a group of C counterweight plate mounting bolt holes and C counterweight plate positioning holes.

4. The hook self-weight expansion structure according to claim 3, characterized in that: The C counterweight plate (5) is provided with a group of five B counterweight plate mounting bolt holes (6) and a group of two B counterweight plate positioning holes (7).

5. The hook self-weight expansion structure according to claim 4, characterized in that: The B counterweight plate positioning hole (7) and the C counterweight plate positioning hole are both positioning pin shaft holes.

6. The hook self-weight expansion structure according to claim 5, characterized in that: The C counterweight plate (5) is directly connected to one B counterweight plate, and the B counterweight plate can be extended to connect to one C counterweight plate (5), and the cycle continues.

7. The hook self-weight expansion structure according to claim 6, characterized in that: The counterweight (1) is symmetrically arranged on both sides of the hook (2).

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