A special tool for hoisting impeller of circulating water pump

Abstract

The utility model relates to mechanical engineering technical field, a kind of special tool for hoisting impeller of circulating water pump.The special tool for hoisting impeller of circulating water pump, including suspender, parallelogram hinged mechanism and arc-shaped tong arm;The suspender is located at top, the parallelogram hinged mechanism is located in middle portion and is connected with the suspender, the arc-shaped tong arm is located at bottom and is connected with the parallelogram hinged mechanism.The middle portion parallelogram hinged mechanism is connected by a plurality of connecting rods by hinged point, and the opening and closing action of arc-shaped tong arm is realized by the rotation of hinged point;The end of the arc-shaped tong arm is provided with hook-shaped gripping portion.The utility model is through the parallelogram hinged mechanism and arc-shaped tong arm of automatic clamping, realizes the safety stability and efficient operation of impeller hoisting, simultaneously has antiskid line, lightweight recess and anticorrosive coating design, effectively improves the safety, efficiency and economy of overhaul operation, and practices environmental protection concept.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a special tool for hoisting impellers of circulating water pumps. Background Technology

[0002] In the field of circulating water pump maintenance, the disassembly and assembly of the impeller is a crucial step in ensuring the stable operation of the pump. Currently, this operation faces numerous challenges, severely hindering the efficient and safe conduct of maintenance work.

[0003] Existing tools lead to high safety risks: Currently, there are no specialized lifting tools for disassembling and assembling impellers during the maintenance of circulating water pumps; lifting slings are commonly used. However, the special shape of circulating water pump impellers makes it difficult to control their center of gravity. When using lifting slings, it is difficult to ensure their balance during lifting, and the impeller is prone to tilting. In actual operation scenarios, once the impeller tilts, it will lead to uneven stress, and it is very likely to fall suddenly during lifting and transportation. This will not only damage the expensive impeller itself, but also pose a serious threat to the lives of surrounding workers, such as crushing injuries, causing huge economic losses and personnel casualties to the company. Low work efficiency: Because the operation of using lifting slings is cumbersome, a lot of time is needed to adjust the binding position and method to ensure the stability of the impeller during lifting. This significantly increases the time required for each impeller disassembly and assembly. According to actual statistics, it used to take 3 hours for two people to complete one impeller disassembly and assembly using lifting slings. This inefficient operating method prolongs the downtime for circulating water pump maintenance, affecting the normal operation of the entire production system and leading to reduced production efficiency. Poor operational standardization: There is a lack of unified and standardized operating procedures for securing lifting slings; different operators use significantly different methods, making it difficult to guarantee the quality and safety of each operation. Furthermore, this non-standardized operation hinders effective management and supervision of maintenance work, making it impossible to promptly identify and correct potential safety hazards and operational errors. In the long run, this is detrimental to the company's development of standardized and regulated maintenance procedures.

[0004] In summary, the existing methods for hoisting circulating water pump impellers have serious safety hazards, low operational efficiency, and poor standardization. There is an urgent need to develop a dedicated hoisting tool to solve these problems and improve the overall level of circulating water pump maintenance. Utility Model Content

[0005] The purpose of this utility model is to provide a special tool for hoisting impellers of circulating water pumps, so as to solve the problems mentioned in the background art.

[0006] A special tool for lifting impellers of circulating water pumps includes a lifting ring, a parallelogram hinge mechanism, and an arc-shaped clamp arm; the lifting ring is located at the top, the parallelogram hinge mechanism is located in the middle and connected to the lifting ring, and the arc-shaped clamp arm is located at the bottom and connected to the parallelogram hinge mechanism;

[0007] The parallelogram hinge mechanism is composed of multiple links connected by hinge points, and the opening and closing action of the arc-shaped clamp arm is realized by the rotation of the hinge points.

[0008] The end of the arc-shaped clamp arm is provided with a hook-shaped gripping part.

[0009] Furthermore, the arc-shaped clamp arm is a puller handle.

[0010] Furthermore, the lifting ring and the parallelogram hinge mechanism are welded.

[0011] Furthermore, the parallelogram hinge mechanism is made of high-strength, rust-resistant alloy steel.

[0012] Furthermore, the connecting rods in the parallelogram hinge mechanism are rectangular cross-section rods, and the thickness of each connecting rod is consistent. The connecting rods are made of high-toughness and high-strength carbon structural steel.

[0013] Furthermore, the hinge point of the parallelogram hinge mechanism is connected by a pin.

[0014] Furthermore, the inner side of the hook-shaped gripping part is provided with anti-slip texture.

[0015] Furthermore, the arc-shaped clamp arm is fixedly connected to the parallelogram hinge mechanism by hexagonal bolts.

[0016] Furthermore, the arm of the arc-shaped clamp is provided with several grooves.

[0017] Furthermore, the circulating water pump uses a special tool for hoisting the impeller.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. Optimized Structure Ensures Safety and Stability: This specialized tool utilizes a parallelogram hinge mechanism and an arc-shaped clamping arm to achieve precise clamping and stable lifting of the impeller during hoisting. The hinge mechanism employs high-strength, rust-resistant alloy steel connecting rods and pins to ensure the reliability of mechanical transmission. The anti-slip hook-shaped gripping part at the end of the arc-shaped clamping arm enhances the friction and contact stability with the impeller, completely eliminating the risks of skewing and falling caused by traditional hoisting slings, thus ensuring the safety of personnel and equipment.

[0020] 2. Reuse of Waste Resources and Standardized Operations: The tool innovatively transforms the puller handle into an arc-shaped clamp arm body, realizing the recycling of industrial waste and reducing manufacturing costs. At the same time, standardized welding and bolting processes (such as welding the lifting ring to the hinge mechanism and bolting the clamp arm to the mechanism) ensure uniform structural strength of the tooling, adapting to the disassembly and assembly needs of different models of circulating water pump impellers, and improving the standardization and efficiency of maintenance operations.

[0021] 3. Long-lasting durability and environmentally friendly design: The articulated mechanism connecting rod is made of high-toughness carbon structural steel, combined with an anti-corrosion coating process (composite anti-corrosion layer coated on the outer surface), which significantly improves the tool's corrosion resistance and service life. In addition, the clamp arm groove design optimizes stress distribution while reducing weight, reducing the risk of deformation during lifting, further extending the tooling's service life and reducing enterprise maintenance costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 Diagram of special tools for hoisting impellers on circulating water pumps;

[0024] Figure 2 Side view of a special tool for hoisting the impeller of a circulating water pump;

[0025] Figure 3 Practical instructions for using specialized tools to lift impellers for circulating water pumps;

[0026] Among them: 1. Lifting ring, 2. Parallelogram hinge mechanism, 3. Arc-shaped clamp arm, 21. Hinge point, 22. Connecting rod, 31. Hexagonal bolt, 32. Groove, 33. Hook-shaped gripping part. Detailed Implementation

[0027] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] The following is in conjunction with the appendix Figure 1 To be continued Figure 3 The present invention will be described in detail with reference to specific embodiments:

[0029] like Figure 1-3 As shown, a special tool for lifting impellers of circulating water pumps includes a lifting ring 1, a parallelogram hinge mechanism 2, and an arc-shaped clamping arm 3. The lifting ring 1 is located at the top and is used to connect to the lifting equipment. The parallelogram hinge mechanism 2 is located in the middle and connected to the lifting ring 1. The arc-shaped clamping arm 3 is located at the bottom and connected to the parallelogram hinge mechanism 2. The parallelogram hinge mechanism 2 plays a role in force transmission and conversion. It can convert the vertical tension transmitted from the lifting ring 1 into the power to open and close the arc-shaped clamping arm 3 through its special structure and movement. The arc-shaped clamping arm 3 is the component that directly acts on the impeller, clamping and releasing the impeller through opening and closing actions to complete the lifting task.

[0030] The parallelogram hinge mechanism 2 is composed of multiple connecting rods 22 connected by hinge points 21, forming a parallelogram structure with four connecting rods and four connection points. Two connecting rods extending from the lower hinge point 21 are respectively connected to and fixed to an arc-shaped clamp arm 3. The opening and closing action of the arc-shaped clamp arm 3 is achieved by rotating the hinge point 21. This structural design allows the connecting rods 22 to rotate around the hinge point 21 when the lifting equipment applies tension, thereby driving the arc-shaped clamp arm 3 to perform the corresponding opening and closing movement. By reasonably designing the length of the connecting rods 22 and the position of the hinge point 21, the opening and closing amplitude and force of the arc-shaped clamp arm 3 can be precisely controlled, ensuring accurate clamping and releasing of the impeller.

[0031] The end of the arc-shaped clamp arm is provided with a hook-shaped gripping part 33. The function of the hook-shaped gripping part 33 is to better fit with the edge or specific part of the impeller when the arc-shaped clamp arm 3 is closed, increase the contact area and gripping force with the impeller, prevent the impeller from slipping during hoisting, and improve the safety and stability of hoisting.

[0032] Furthermore, the arc-shaped clamp arm 3 is a puller handle. Puller handles typically possess high strength and a suitable shape; using them as the arc-shaped clamp arm 3 fully utilizes their original structure and mechanical properties. This not only ensures sufficient force when clamping the impeller, but its shape is also potentially more suitable for contact with the impeller. Simultaneously, it can reduce tool manufacturing costs and achieve rational resource utilization.

[0033] Furthermore, the lifting ring 1 and the parallelogram hinge mechanism 2 are welded together. This welded connection ensures a strong and stable connection between the lifting ring 1 and the parallelogram hinge mechanism 2, preventing loosening or separation during force transmission during lifting, thus guaranteeing the structural integrity and reliability of the entire tool.

[0034] Furthermore, the parallelogram hinge mechanism 2 is made of high-strength, rust-resistant alloy steel. The high strength allows the parallelogram hinge mechanism 2 to withstand significant tensile forces during lifting, preventing deformation or damage. The rust-resistant alloy steel material prevents the mechanism from rusting in humid or corrosive environments, extending the tool's service life and reducing the probability of structural strength degradation and malfunctions due to corrosion.

[0035] Furthermore, the connecting rods 22 in the parallelogram hinge mechanism 2 are rectangular cross-section rods with uniform thickness, and are made of high-toughness and high-strength carbon structural steel. The rectangular cross-section rods have good bending resistance, maintaining a stable shape under tension and torque; the uniform thickness of each connecting rod ensures uniform stress distribution throughout the mechanism, preventing damage due to localized stress concentration. The high-toughness and high-strength carbon structural steel provides the connecting rods 22 with sufficient load-bearing capacity and resistance to deformation, ensuring the normal operation of the parallelogram hinge mechanism 2.

[0036] Furthermore, the hinge point 21 of the parallelogram hinge mechanism 2 is connected by a pin. This pin connection allows the connecting rod 22 to rotate flexibly around the hinge point 21, ensuring the flexibility and smoothness of the parallelogram hinge mechanism 2's movement. Simultaneously, the pin connection also possesses a certain load-bearing capacity, capable of withstanding the interaction forces between the connecting rods 22, ensuring the stability of the entire mechanism.

[0037] Furthermore, the inner side of the hook-shaped gripping part 33 is provided with anti-slip texture. The function of the anti-slip texture is to increase the friction between the hook-shaped gripping part 33 and the impeller surface, so as to more effectively prevent the impeller from slipping when clamping the impeller. Especially when the impeller surface is relatively smooth or there is some shaking during the hoisting process, the anti-slip texture can greatly improve the reliability of the grip and ensure the safety of the hoisting operation.

[0038] Furthermore, the arc-shaped clamp arm 3 and the parallelogram hinge mechanism 2 are fixedly connected by hexagonal bolts 31. The hexagonal bolt 31 connection method is characterized by easy disassembly, facilitating maintenance, replacement, or adjustment of the arc-shaped clamp arm 3 or the parallelogram hinge mechanism 2. Simultaneously, tightening the hexagonal bolts 31 ensures the tightness and stability of the connection between the two, guaranteeing that force can be effectively transmitted from the parallelogram hinge mechanism 2 to the arc-shaped clamp arm 3.

[0039] Furthermore, the arc-shaped clamp arm 3 has several grooves on its body. The groove design has multiple functions. On the one hand, it can reduce the weight of the arc-shaped clamp arm 3, reduce the overall weight of the tool, and reduce the load on the lifting equipment. On the other hand, the grooves can also enhance the structural strength of the arm and optimize the stress distribution, so that the arc-shaped clamp arm 3 can distribute the stress more evenly when under pressure, avoiding damage to the arm due to stress concentration.

[0040] Furthermore, the circulating water pump impeller hoisting tool is described. The anti-corrosion coating forms a protective film on the tool's outer surface, preventing chemical reactions between the tool and moisture, oxygen, chemicals, etc., in the surrounding environment. This effectively prevents rust and corrosion, extends the tool's service life, and maintains its performance and appearance. The anti-corrosion coating is particularly important in humid working environments with corrosive gases or liquids.

[0041] Working principle:

[0042] The working principle of this special tool for lifting impellers of circulating water pumps is based on the mechanical characteristics of a parallelogram hinge mechanism. It achieves its function through the coordinated operation of the lifting ring 1, the parallelogram hinge mechanism 2, and the arc-shaped clamping arm 3. When the lifting equipment applies tension through the lifting ring 1, the force is transmitted to the parallelogram hinge mechanism 2. Multiple connecting rods 22 rotate through the hinge point 21, causing the arc-shaped clamping arm 3 at the bottom to open and close. Due to the parallelogram structure, the arc-shaped clamping arms 3 on both sides can close or open synchronously and symmetrically, thereby achieving the clamping and releasing of the impeller. Figure 3 As shown. The hook-shaped gripping part 33 at the end of the arc-shaped clamp arm 3, in conjunction with the inner anti-slip texture, increases friction when clamping the impeller, ensuring a stable grip; the groove 32 on the arm body reduces weight, optimizes stress distribution, and increases deformation buffer space. Its usage process is as follows: First, the operator checks the tool for any damage, ensuring that each hinge point 21 rotates flexibly and the anti-slip texture of the hook-shaped gripping part 33 is intact. Then, the tool is moved to the impeller to be lifted, and the position of the arc-shaped clamp arm 3 is adjusted so that the hook-shaped gripping part 33 aligns with both sides of the impeller. At this time, the parallelogram hinge mechanism 2 is in the open state. Next, the hook of the lifting equipment is securely connected to the lifting ring 1, and the lifting is performed slowly. As the pulling force increases, the parallelogram hinge mechanism 2 moves, and the arc-shaped clamp arm 3 gradually closes, tightly clamping the impeller. During the lifting process, due to the stability characteristics of the parallelogram hinge mechanism 2, the impeller remains stable. Once the designated position is reached, the lifting equipment's tension is slowly released, the parallelogram hinge mechanism 2 returns to its original state, and the arc-shaped clamp arm 3 opens, completing the impeller hoisting operation.

[0043] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A special tool for hoisting the impeller of a circulating water pump, characterized in that, It includes a lifting ring, a parallelogram hinge mechanism, and an arc-shaped clamp arm; the lifting ring is located at the top, the parallelogram hinge mechanism is located in the middle and connected to the lifting ring, and the arc-shaped clamp arm is located at the bottom and connected to the parallelogram hinge mechanism; The parallelogram hinge mechanism is composed of multiple links connected by hinge points, and the opening and closing action of the arc-shaped clamp arm is realized by the rotation of the hinge points. The end of the arc-shaped clamp arm is provided with a hook-shaped gripping part.

2. The special tool for hoisting the impeller of a circulating water pump according to claim 1, characterized in that, The arc-shaped clamp arm is a puller handle.

3. The special tool for hoisting the impeller of a circulating water pump according to claim 1, characterized in that, The lifting ring and the parallelogram hinge mechanism are welded.

4. The special tool for hoisting the impeller of a circulating water pump according to claim 1, characterized in that, The parallelogram hinge mechanism is made of high-strength, rust-resistant alloy steel.

5. The special tool for hoisting the impeller of a circulating water pump according to claim 1, characterized in that, The connecting rods in the parallelogram hinge mechanism are rectangular cross-section rods with consistent thickness, and are made of high-toughness and high-strength carbon structural steel.

6. The special tool for hoisting the impeller of a circulating water pump according to claim 1, characterized in that, The hinge point of the parallelogram hinge mechanism is connected by a pin.

7. The special tool for hoisting the impeller of a circulating water pump according to claim 1, characterized in that, The inner side of the hook-shaped gripping part is provided with anti-slip texture.

8. The special tool for hoisting the impeller of a circulating water pump according to claim 1, characterized in that, The arc-shaped clamp arm is fixedly connected to the parallelogram hinge mechanism by hexagonal bolts.

9. The special tool for hoisting the impeller of a circulating water pump according to claim 1, characterized in that, The arm of the arc-shaped clamp has several grooves.

10. The special tool for hoisting the impeller of a circulating water pump according to claim 1, characterized in that, The surface of the special tool for hoisting the impeller of the circulating water pump is coated with an anti-corrosion coating.

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