Special tool for disassembling and assembling lower cover of piston connecting rod of diesel engine

Abstract

The utility model discloses a special tool for disassembling and assembling a lower cover of a piston connecting rod of a diesel engine, which relates to the technical field of maintenance tools of internal combustion locomotives and comprises a supporting piece, an axial limiting piece, a rotating limiting piece and a holding piece, the axial limiting piece is fixedly connected to the top face of the supporting piece and can be inserted into a threaded connecting hole of the piston connecting rod lower cover so that the piston connecting rod lower cover can be limited in the axial direction. The rotation limiting piece is fixedly connected to the top face of the supporting piece to limit rotation of the piston connecting rod lower cover. The holding piece is fixedly connected to the bottom face of the supporting piece so that a maintainer can hold the holding piece and drive the supporting piece to move, the structure is simple, use is convenient, the maintenance efficiency is effectively improved, and risks caused by potential safety hazards are effectively reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of internal combustion locomotive maintenance tools, and in particular to a special tool for disassembling and assembling the lower cover of a diesel engine piston connecting rod. Background Technology

[0002] When overhauling a diesel engine in an internal combustion locomotive, the piston and connecting rod need to be disassembled and reassembled. However, due to the significant weight of the connecting rod lower cover and the limited operating space, only one person can lift the lower cover while another operates the connecting bolts. This process presents numerous problems. When operating the connecting rod bolts, the diesel engine block obstructs the operator's view, requiring multiple attempts to loosen or tighten the bolts. This forces the person lifting the lower cover to maintain a heavy load for extended periods, frequently causing the lower cover to slip from their grasp when their strength reaches its limit. This necessitates multiple shifts or periodic breaks, resulting in low efficiency in disassembling and reassembling the diesel engine piston and connecting rod, and posing significant safety hazards. Low disassembly efficiency: Because the lower connecting rod cover needs to be manually lifted, the entire disassembly and reassembly process consumes a large amount of manpower and time, resulting in extremely low work efficiency. Significant safety hazards exist in the manual lifting and bolting of the connecting rod lower cover. Obstructed visibility prevents quick bolt removal or tightening, causing the operator to maintain a single position for extended periods. When the operator's strength reaches its limit, the lower cover may slip and fall. While the operator uses their forearm to support the lower cover against the lower panel for stability and to adjust its position for another operator, slipping could result in injury or even fracture if the cover slips. Given these problems in the existing diesel engine piston connecting rod disassembly and assembly process, there is an urgent need to design a specialized tool for efficient, reliable, and safe disassembly and assembly of the connecting rod lower cover, aiming to improve efficiency, reduce operational difficulty, and ensure operator safety. Utility Model Content

[0003] The purpose of this utility model is to provide a special tool for disassembling and assembling the lower cover of a diesel engine piston connecting rod, so as to solve the problems existing in the prior art. It has a simple structure, is easy to use, effectively improves maintenance efficiency, and effectively reduces the risk of safety hazards.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a special tool for disassembling and assembling the lower cover of a diesel engine piston connecting rod, comprising: a support member, an axial limiting member, a rotation limiting member, and a gripping member. The axial limiting member is fixedly connected to the top surface of the support member and can be inserted into a threaded connection hole of the lower cover of the piston connecting rod to limit the lower cover of the piston connecting rod in the axial direction. The rotation limiting member is fixedly connected to the top surface of the support member to restrict the rotation of the lower cover of the piston connecting rod. The gripping member is fixedly connected to the bottom surface of the support member so that maintenance personnel can hold it and move the support member.

[0006] Preferably, the axial limiting component is a locating pin.

[0007] Preferably, the top end of the positioning pin is tapered.

[0008] Preferably, the rotation limiting member includes a first limiting plate and a second limiting plate, both of which are fixedly connected to the top surface of the support member, and the first limiting plate and the second limiting plate are respectively used to abut against the two sides of the piston connecting rod lower cover to limit the rotation of the piston connecting rod lower cover.

[0009] Preferably, the first limiting plate and the second limiting plate are vertically fixedly connected.

[0010] Preferably, the support member is a tray.

[0011] Preferably, the angle between the grip and the tray is 55° to 65°.

[0012] Preferably, the gripping element is made of square steel.

[0013] Preferably, the surface of the square steel is provided with anti-slip texture.

[0014] The present invention achieves the following technical advantages over the prior art:

[0015] This utility model provides a special tool for disassembling and assembling the lower cover of a diesel engine piston connecting rod. The support component provides an installation base for other components; the axial limiting component prevents the lower cover of the piston connecting rod from shifting in the axial direction, ensuring its stable position in this direction, which is conducive to accurate disassembly and assembly operations; the rotation limiting component inhibits the rotation of the lower cover of the piston connecting rod, keeping its relative position fixed, which makes it easier for maintenance personnel to align and operate; the grip component makes it convenient for maintenance personnel to operate the entire tool, making the tool movement more flexible and convenient, and improving work efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0017] Figure 1 A front view of the special tool for disassembling and assembling the lower cover of the diesel engine piston connecting rod provided by this utility model;

[0018] Figure 2 A top view of the special tool for disassembling and assembling the lower cover of the diesel engine piston connecting rod provided by this utility model;

[0019] In the diagram: 1. Positioning pin; 2. Rotation limiter; 3. Tray; 4. Gripper. Detailed Implementation

[0020] 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.

[0021] The purpose of this utility model is to provide a special tool for disassembling and assembling the lower cover of a diesel engine piston connecting rod, so as to solve the problems existing in the prior art. It has a simple structure, is easy to use, effectively improves maintenance efficiency, and effectively reduces the risk of safety hazards.

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] This utility model provides a special tool for disassembling and assembling the lower cover of a diesel engine piston connecting rod, such as... Figures 1-2As shown, the tool includes: a support, an axial limiting component, a rotation limiting component 2, and a gripping component 4. The axial limiting component is fixedly connected to the top surface of the support and can be inserted into a threaded connection hole in the piston rod lower cover to limit the piston rod lower cover in the axial direction. The rotation limiting component 2 is fixedly connected to the top surface of the support to restrict the rotation of the piston rod lower cover. The gripping component 4 is fixedly connected to the bottom surface of the support to allow maintenance personnel to grip and move the support. The support provides an installation base for other components. The axial limiting component prevents the piston rod lower cover from shifting in the axial direction, ensuring its stable position in that direction, which is beneficial for accurate disassembly and assembly operations. The rotation limiting component 2 inhibits the rotation of the piston rod lower cover, keeping its relative position fixed, which is convenient for maintenance personnel to align and operate better. The gripping component 4 makes it easy for maintenance personnel to manipulate the entire tool, making the tool movement more flexible and convenient, and improving work efficiency.

[0024] In a preferred embodiment, the axial limiting component is a positioning pin 1. The positioning pin 1 has a simple structure and precise positioning. It can be quickly and accurately inserted into the threaded connection hole of the piston connecting rod lower cover to achieve a reliable axial limiting function. Compared with other possible limiting structures, the positioning pin 1 has low cost and is easy to manufacture. At the same time, it is also relatively easy to install and disassemble.

[0025] In a preferred embodiment, the top of the locating pin 1 is tapered. The tapered end design helps the locating pin 1 to be inserted more smoothly into the threaded connection hole of the piston connecting rod lower cover, and plays a guiding role. Even if there is a certain deviation or impurity accumulation in the threaded connection hole, it can be inserted more easily, improving the convenience and success rate of operation, and reducing assembly difficulties caused by inaccurate alignment.

[0026] In a preferred embodiment, the rotation limiting member 2 includes a first limiting plate and a second limiting plate. Both the first and second limiting plates are fixedly connected to the top surface of the support member. The first and second limiting plates respectively abut against both sides of the piston connecting rod lower cover to restrict its rotation. This type of rotation limiting member 2 restricts the rotation of the piston connecting rod lower cover through double-sided abutment, resulting in a more stable and reliable limiting effect compared to a single limiting structure. It effectively prevents the piston connecting rod lower cover from rotating circumferentially during disassembly and assembly, ensuring stable disassembly and assembly and facilitating more precise separation and assembly of the lower cover and piston connecting rod.

[0027] In a preferred embodiment, the first limiting plate and the second limiting plate are vertically fixedly connected. The vertically fixed first limiting plate and the second limiting plate can form a stable right-angle limiting structure, which can better adapt to the shape characteristics of the piston connecting rod lower cover and simultaneously restrict the rotation of the piston connecting rod lower cover in two vertical directions, further enhancing the rotation limiting effect and effectively suppressing the rotation of the piston connecting rod lower cover in all directions, ensuring the accuracy and stability of the disassembly and assembly process.

[0028] In a preferred embodiment, the support is a tray 3, which has a large bearing area and a flat surface, enabling it to stably support the axial limiting component, the rotation limiting component 2, and the piston connecting rod lower cover. Its simple structure, high strength, and ease of manufacture and processing allow for wide application in various working environments. Furthermore, the flat surface helps ensure the installation accuracy of each component, improving the overall reliability and stability of the tool.

[0029] In a preferred embodiment, the angle between the grip 4 and the tray 3 is 55° to 65°. This angle range allows maintenance personnel to maintain a comfortable gripping position, avoiding both inconvenience and limited force due to an excessively small angle, and instability due to an excessively large angle. A preferred angle is 60°, which allows maintenance personnel to apply force more easily and naturally to move the tool, improving operational comfort. It also helps reduce errors caused by an inconvenient grip, indirectly improving work efficiency and quality.

[0030] In a preferred embodiment, the grip 4 is made of square steel. Square steel is a high-strength material capable of withstanding various forces applied by maintenance personnel during operation, and is not easily deformed or damaged, ensuring the structural reliability of the tool during use. Furthermore, the regular shape of the square steel facilitates processing and installation for connection with other components, while its relatively flat surface makes it easy to grip. The addition of anti-slip texture further optimizes the grip, enhancing the overall durability and practicality of the tool.

[0031] In a preferred embodiment, the surface of the square steel is provided with anti-slip texture. The anti-slip texture can significantly increase the friction between the surface of the square steel and the hands of the maintenance personnel, effectively preventing the grip from slipping due to sweaty hands, tool shaking, or other reasons during operation. This allows the maintenance personnel to hold the tools more firmly, ensuring operational safety and ensuring that disassembly and assembly operations can be carried out continuously and stably, further improving work efficiency.

[0032] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A special tool for disassembling and assembling the lower cover of a diesel engine piston connecting rod, characterized in that: include: Support components; An axial limiting component is fixedly connected to the top surface of the support component and can be inserted into a threaded connection hole of the piston rod lower cover to limit the piston rod lower cover in the axial direction. A rotation limiting component is fixedly connected to the top surface of the support component to restrict the rotation of the piston rod lower cover; as well as A gripping component is fixedly connected to the bottom surface of the support component so that maintenance personnel can grip it and move the support component.

2. The tool according to claim 1, characterized in that: The axial limiting component is a locating pin.

3. The tool according to claim 2, characterized in that: The top of the positioning pin is tapered.

4. The tool according to claim 3, characterized in that: The rotation limiting component includes a first limiting plate and a second limiting plate. Both the first limiting plate and the second limiting plate are fixedly connected to the top surface of the support component. The first limiting plate and the second limiting plate are used to abut against the two sides of the piston connecting rod lower cover to restrict the rotation of the piston connecting rod lower cover.

5. The tool according to claim 4, characterized in that: The first limiting plate and the second limiting plate are vertically fixedly connected.

6. The tool according to claim 5, characterized in that: The support component is a tray.

7. The tool according to claim 6, characterized in that: The angle between the grip and the tray is 55° to 65°.

8. The tool according to claim 7, characterized in that: The gripping component is made of square steel.

9. The tool according to claim 8, characterized in that: The surface of the square steel is provided with anti-slip texture.

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