A lifting tool for a connecting rod of a low-speed diesel engine

Abstract

The utility model relates to low -speed diesel engine connecting rod hoisting technical field especially relates to a kind of hoisting tool for low -speed diesel engine connecting rod.The kind of hoisting tool for low -speed diesel engine connecting rod includes: connecting rod body, lug, elastic component, sliding rod, two first settled pipes are slidably connected in the inside of the two side cambers of connecting rod body, two second settled pipes are slidably connected in the inside of the two side cambers of connecting rod body above first settled pipe, the length of first settled pipe is slightly longer than the length of second settled pipe, every two first settled pipe and second settled pipe are externally fixedly connected with support plate, the far side of two support plates is fixedly connected with lug, the inside of lug starts with two lifting holes.The utility model can better adapt to connecting rod big end camber, closely adhere to camber, improve the adaptability of hoisting tool and connecting rod, increase bolt thread surface and connecting rod body internal thread surface friction.

Description

Technical Field

[0001] This utility model relates to the field of lifting technology for connecting rods of low-speed diesel engines, and in particular to a lifting tool for connecting rods of low-speed diesel engines. Background Technology

[0002] The connecting rod in a low-speed diesel engine is a crucial component connecting the piston and crankshaft. It transmits force and motion, converting the reciprocating linear motion of the piston into the rotational motion of the crankshaft, ensuring the normal operation of the diesel engine. During diesel engine repair, maintenance, or component replacement, the connecting rod is heavy and long, making it difficult to move manually. Furthermore, precise installation and disassembly are required; even slight deviations can affect engine performance. Therefore, specialized lifting equipment is necessary to ensure safe and efficient operation.

[0003] Most connecting rods are quite heavy and do not have lifting holes, so lifting tools are required when they need to be lifted. However, ordinary lifting tools are difficult to install on the large end arc surface of the connecting rod, which increases the difficulty of lifting.

[0004] Therefore, it is necessary to provide a new lifting tool for connecting rods of low-speed diesel engines to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a lifting tool for connecting rods of low-speed diesel engines.

[0006] This utility model provides a lifting tool for a low-speed diesel engine connecting rod, comprising: a connecting rod body, lifting lugs, a spring assembly, a sliding rod, and two first settling tubes slidably connected inside the arc on both sides of the connecting rod body, and two second settling tubes slidably connected above the first settling tubes inside the arc on both sides of the connecting rod body. The length of the first settling tube is slightly longer than the length of the second settling tube. A support plate is fixedly connected to the outside of every two first settling tubes and two second settling tubes. A lifting lug is fixedly connected to the far side of the two support plates. The lifting lug has two lifting holes inside. A spring assembly is installed inside the first settling tube and the second settling tube. A sliding rod is slidably connected to the inner wall of the first settling tube and the second settling tube. A bolt is fixedly connected to one end of the sliding rod, and a compression ring is fixedly connected to the other end of the sliding rod. A turning block is fixedly connected to the outside of the sliding rod near the compression ring.

[0007] Preferably, the elastic component includes two gaskets, and the interior of both the first and second settling tubes is provided with receiving grooves. A spring is fixedly connected to the adjacent side of the two gaskets, and the spring is sleeved on the outside of the sliding rod.

[0008] Preferably, one side of the twisting block is fixedly connected to the side of the compression ring near the sliding rod.

[0009] Preferably, the side of the twisting block away from the compression ring is in contact with the side of the sliding pad.

[0010] Preferably, one of the gaskets near the connecting rod body is fixedly connected to one side of the inner wall of the receiving groove.

[0011] Preferably, one of the gaskets, located away from the connecting rod body, is slidably connected to the inner wall of the receiving groove.

[0012] Preferably, the outer side of the bolt is threaded to the inner side of one side of the connecting rod body.

[0013] Compared with related technologies, the lifting tool for connecting rods of low-speed diesel engines provided by this utility model has the following advantages:

[0014] This invention utilizes the difference in length between the first and second settling tubes to better adapt to the curved surface of the connecting rod's large end, closely fitting the arc surface. This solves the problem that ordinary lifting tools are difficult to install on the arc surface of the connecting rod's large end, thus improving the compatibility between the lifting tool and the connecting rod.

[0015] This utility model uses bolts to connect and tighten the connecting rod body with threads, and with the help of the spring component to generate a rebound force, it increases the friction between the bolt thread surface and the internal thread surface of the connecting rod body, forming an anti-loosening self-locking effect, making the lifting tool installation more stable. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a lifting tool for a low-speed diesel engine connecting rod provided by this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the structure of the lifting lug.

[0018] Figure 3 for Figure 1 The diagram shows the structure of the support plate.

[0019] The following are the labels in the diagram: 1. Connecting rod body; 2. First settling tube; 3. Second settling tube; 4. Support plate; 5. Lifting lug; 6. Lifting hole; 7. Gasket; 8. Spring; 9. Sliding rod; 10. Bolt; 11. Compression ring; 12. Tightening block. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0022] Please see Figures 1 to 3 A lifting tool for a low-speed diesel engine connecting rod includes: a connecting rod body 1, which is a key component of a marine low-speed diesel engine, with a semi-circular arc structure at its large end. Multiple grooves are evenly distributed inside the arc on both sides, and the inner wall of the groove is provided with a wear-resistant coating to reduce wear during sliding. Two first settling tubes 2 and a second settling tube 3 are slidably connected in each groove. The length of the first settling tube 2 is slightly longer than the length of the second settling tube 3. A support plate 4 is fixedly connected to the outside of every two first settling tubes 2 and second settling tubes 3. The surface of the support plate 4 is provided with anti-slip texture, which is distributed in an interlaced grid pattern to increase the friction between the support plate 4 and the surface of the connecting rod body 1, prevent the tool from sliding during lifting, and improve the safety and stability of lifting. Lifting lugs 5 are fixedly connected to the opposite side of the two support plates 4. There are two lifting holes 6 inside the lifting lugs 5.

[0023] The elastic components are installed inside the first settling tube 2 and the second settling tube 3. The elastic components include two washers 7. One washer 7, which is closer to the connecting rod body 1, is fixedly connected to one side of the inner wall of the receiving groove, and the other washer 7, which is farther away from the connecting rod body 1, is slidably connected to the inner wall of the receiving groove. The first settling tube 2 and the second settling tube 3 are both provided with receiving grooves. A spring 8 is fixedly connected to the adjacent side of the two washers 7. The inner diameter of the receiving groove is adapted to the outer diameter of the spring 8 to ensure that the spring 8 will not shift during compression and extension. The spring 8 is sleeved on the outside of the sliding rod 9.

[0024] The sliding rod 9 is slidably connected to the inner walls of the first settling tube 2 and the second settling tube 3. One end of the sliding rod 9 is fixedly connected to a bolt 10. The outside of the bolt 10 is threaded to the inside of one side of the connecting rod body 1. The other end of the sliding rod 9 is fixedly connected to a compression ring 11. A screwing block 12 is fixedly connected to the outside of the side of the sliding rod 9 near the compression ring 11. One side of the screwing block 12 is fixedly connected to the side of the compression ring 11 near the sliding rod 9. The side of the screwing block 12 away from the compression ring 11 is in contact with the side of the sliding pad 7.

[0025] The working principle of the lifting tool for connecting rods of low-speed diesel engines provided by this utility model is as follows:

[0026] During installation, the tool is first positioned using the two differently sized tubes 2 and 3 to adapt to the curved surface of the connecting rod's large end, ensuring a tight fit. It is then inserted into the curved side of the connecting rod body 1. Next, the tool is used to tighten the compression ring 11, causing the sliding rod 9 to rotate the bolt 10. The bolt 10 then connects with the threaded surface of one side of the connecting rod body 1, tightening the bolt. During this process, the tightening block 12 also moves with the sliding rod 9, compressing the sliding washer 7. When the gasket 7 is compressed, the spring 8 will be subjected to force. After the spring 8 is subjected to force, a rebound force will be generated in the opposite direction of tightening, causing the tightening block 12 to apply force back. This elastic force increases the friction between the threaded surface of the bolt 10 and the threaded surface inside one side of the connecting rod body 1, causing the bolt 10 to generate an axial preload. This preload significantly increases the normal pressure between the threaded pairs, thereby increasing the static friction torque and forming an anti-loosening self-locking effect to ensure the stability of the installation. Then, the lifting hook of the lifting equipment can be connected to the lifting lug 5 through the lifting hole 6 to realize the lifting operation of the connecting rod.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lifting tool for connecting rods of low-speed diesel engines, characterized in that, include: The connecting rod body (1) has two first set tubes (2) slidably connected inside the arc on both sides of the connecting rod body (1). There are two second set tubes (3) slidably connected above the first set tubes (2) inside the arc on both sides of the connecting rod body (1). The length of the first set tube (2) is slightly longer than the length of the second set tube (3). A support plate (4) is fixedly connected to the outside of each pair of first set tubes (2) and second set tubes (3). Lifting lugs (5) are fixedly connected to the opposite sides of the two support plates (4), and there are two lifting holes (6) inside the lifting lugs (5); Elastic components are installed inside both the first settling tube (2) and the second settling tube (3); The sliding rod (9) is slidably connected to the inner walls of the first settling tube (2) and the second settling tube (3). One end of the sliding rod (9) is fixedly connected to a bolt (10), and the other end of the sliding rod (9) is fixedly connected to a compression ring (11). A screwing block (12) is fixedly connected to the outside of the side of the sliding rod (9) near the compression ring (11).

2. The lifting tool for a low-speed diesel engine connecting rod according to claim 1, characterized in that, The elastic component includes two gaskets (7), and the interior of the first settling tube (2) and the second settling tube (3) are provided with receiving grooves. A spring (8) is fixedly connected to the adjacent side of the two gaskets (7), and the spring (8) is sleeved on the outside of the sliding rod (9).

3. A lifting tool for a low-speed diesel engine connecting rod according to claim 1, characterized in that, One side of the twisting block (12) is fixedly connected to the side of the compression ring (11) near the sliding rod (9).

4. A lifting tool for a low-speed diesel engine connecting rod according to claim 2, characterized in that, The side of the twisting block (12) away from the compression ring (11) is in contact with the side of the sliding pad (7).

5. A lifting tool for a low-speed diesel engine connecting rod according to claim 2, characterized in that, One of the gaskets (7) near the connecting rod body (1) is fixedly connected to one side of the inner wall of the receiving groove.

6. A lifting tool for a low-speed diesel engine connecting rod according to claim 2, characterized in that, One of the gaskets (7) located away from the connecting rod body (1) is slidably connected to the inner wall of the receiving groove.

7. A lifting tool for a low-speed diesel engine connecting rod according to claim 1, characterized in that, The bolt (10) is threaded to the outside of the connecting rod body (1) on one side.

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