A low-resistance lubrication channel for engineering machinery

Abstract

This utility model relates to a low-resistance lubrication oil passage for engineering machinery, comprising a lubrication block connected to an oil cup, a first oil passage connected to a lubrication point, and a second oil passage connecting the first oil passage to the lubrication block; both the first and second oil passages are rigid pipes made of stainless steel, wherein at least one of the two ends of the first oil passage is an elbow structure; the inner wall of the rigid pipe is coated with a nano-coating; the sealing joint between the oil cup, lubrication block, lubrication point, first oil passage, and second oil passage is a snap-fit ​​self-locking joint. This utility model's pipe is not easily deformed, has low resistance, is flexible and convenient to assemble and disassemble, and has good sealing performance.

Description

Technical Field

[0001] This utility model relates to a low-resistance lubrication oil passage for engineering machinery, belonging to the technical field of engineering machinery equipment. Background Technology

[0002] During operation, construction machinery has numerous moving parts that require lubrication. For example, critical components like the joints and bearings of a forklift require regular grease injection to reduce wear. Traditional grease injection systems typically use a hose connecting the grease gun to the injection point, which has the following drawbacks:

[0003] 1. Excessive resistance: The hose collapses and deforms under high pressure, which narrows the flow channel of the grease, significantly increases the injection resistance, and may even cause the problem of "the grease cannot be injected".

[0004] 2. Prone to folding and clogging: The narrow working space of the forklift makes the hose prone to folding and forming dead folds, causing local blockage or breakage;

[0005] 3. Poor sealing performance: Traditional threaded joints are complicated to install, and the sealing rings are prone to aging and oil leakage, which pollutes the working environment.

[0006] To address the aforementioned shortcomings, current improvement solutions, such as thickening the hose wall, can only alleviate hose deformation but cannot fundamentally solve the resistance and joint sealing problems. Furthermore, thick-walled hoses are heavy and difficult to bend, leading to difficult and inflexible installation and maintenance. Therefore, there is an urgent need for a lubrication channel for engineering machinery that is less prone to deformation, has low resistance, is easy to assemble and disassemble, and has good sealing properties. Summary of the Invention

[0007] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a low-resistance lubrication oil passage for engineering machinery that is not easily deformed, has low resistance, is flexible and convenient to disassemble and assemble, and has good sealing performance.

[0008] The purpose of this utility model is achieved as follows:

[0009] A low-resistance lubrication oil passage for engineering machinery includes a lubrication block connected to an oil cup, a first oil passage connected to a lubrication point, and a second oil passage connecting the first oil passage to the lubrication block. Both the first and second oil passages are rigid pipes made of stainless steel, wherein at least one of the two ends of the first oil passage is an elbow structure. The inner wall of the rigid pipe is provided with a nano-coating. The sealing joint between the oil cup, lubrication block, lubrication point, first oil passage, and second oil passage is a snap-fit ​​self-locking joint.

[0010] Furthermore, the stainless steel rigid tube has a wall thickness of not less than 2.5 mm, and its inner wall is treated with electrolytic polishing and nano-coating composite treatment, with a roughness of not more than Ra0.3 μm.

[0011] Furthermore, the material of the rigid tube is replaced with titanium alloy.

[0012] Furthermore, a pressure sensor is connected to the sealing joint.

[0013] Furthermore, the bend angle of the first oil passage is in the range of 20°~30°.

[0014] Furthermore, the snap-fit ​​self-locking connector has a built-in spring steel snap and a fluororubber sealing ring, with a sealing pressure of not less than 8MPa.

[0015] Furthermore, multiple mounting blocks are provided in the middle of the rigid pipe to fix the rigid pipe to the forklift.

[0016] Furthermore, the lubrication points include the pulley shaft between the inner and outer masts of the forklift, the upper hinge point of the pitch cylinder, the pipeline pulley, and the chain wheel fixing shaft.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model employs a lubrication block and a rigid pipe structure for the first and second oil passages, and a lubrication coating is provided on the inner wall of the rigid pipe to avoid pipe collapse and folding, significantly reduce grease flow resistance, and improve pipe service life. An elbow is provided in the second oil passage near the lubrication point to match the complex working space of the forklift and facilitate disassembly and maintenance. The sealing joint adopts a quick connector to improve sealing performance and simplify disassembly and assembly operations. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the connection principle of a low-resistance lubrication oil passage for engineering machinery according to this utility model.

[0020] Figure 2 This is a schematic diagram of the installation structure of a low-resistance lubrication oil passage for engineering machinery according to this utility model.

[0021] in:

[0022] 1. Oil cup; 2. Lubrication block; 3. Lubrication point; 4. First oil passage; 5. Second oil passage; 6. Mounting block. Detailed Implementation

[0023] See Figures 1-2This utility model relates to a low-resistance lubrication oil passage for engineering machinery, comprising a lubrication block 2 connected to an oil cup 1, a first oil passage 4 connected to a lubrication point 3, and a second oil passage 5 connecting the first oil passage 4 to the lubrication block 2; multiple mounting blocks 6 are provided in the middle of the first oil passage 4 and the second oil passage 5 to fix the first oil passage 4 and the second oil passage 5 to the forklift; in this embodiment, the lubrication point 3 includes the pulley shaft between the inner and outer masts of the forklift, the upper hinge point of the pitch cylinder, the pipeline pulley, and the chain wheel fixing shaft; the lubrication position in other engineering machinery can be set and adjusted accordingly;

[0024] Both the first oil passage 4 and the second oil passage 5 are made of high-strength stainless steel rigid pipes with a wall thickness of not less than 2.5 mm. The inner wall is treated with electrolytic polishing and nano-coating composite treatment, and the roughness is not greater than Ra0.3 μm. The rigid structure of the rigid pipe has high structural strength, which can avoid the problem of collapse. The smooth inner wall reduces the flow resistance of grease by more than 75%, eliminates the risk of folding, and increases the service life by 4 times compared with the flexible hose. To further improve the lightweight and high strength of the pipeline, the stainless steel material of the rigid pipe can be replaced with titanium alloy.

[0025] At least one of the two ends of the first oil passage 4 is an elbow structure with an elbow angle range of 20° to 30°, which is suitable for the complex and narrow space of the forklift. During production, the elbow angle can be preset to 20° and adjusted accordingly during installation. Since there are many lubrication points 3, the length specifications of the first oil passage 4 are also set accordingly.

[0026] The sealing joint between the oil cup 1, lubrication block 2, lubrication point 3, first oil passage 4, and second oil passage 5 is a snap-fit ​​self-locking joint, which achieves locking upon insertion, improving sealing performance while also offering the advantages of easy assembly and disassembly, preventing oil leakage and pollution, and improving assembly and disassembly efficiency. The snap-fit ​​self-locking joint is a conventional sealing joint technology, internally equipped with a spring steel snap and a fluororubber sealing ring, with a sealing pressure of not less than 8MPa. It is existing technology, adaptable to various oil injection point interfaces, and supports quick assembly and disassembly. To further enable real-time monitoring of the sealing status, a pressure sensor can be connected to the sealing joint. In case of leakage, an alarm can be triggered promptly, allowing for timely maintenance and improving the safety of forklift operation.

[0027] This utility model uses a lubrication block 2 and a rigid pipe structure for the first oil passage 4 and the second oil passage 5 to lubricate the oil circuit. A lubricating coating is provided on the inner wall of the rigid pipe to avoid pipeline collapse and folding, significantly reduce the flow resistance of grease, and improve the service life of the pipeline. An elbow is provided in the second oil passage 5 near the lubrication point 3 to match the complex working space of the forklift and facilitate disassembly and maintenance. The sealing joint adopts a quick connector to improve the sealing performance and simplify the disassembly and assembly operation.

[0028] Additionally, it should be noted that the above-described specific implementation is merely an optimized solution of this patent, and any modifications or improvements made by those skilled in the art based on the above concept are within the scope of protection of this patent.

Claims

1. A low-resistance lubrication oil passage for engineering machinery, characterized in that: It includes a lubrication block (2) connected to an oil cup (1), a first oil passage (4) connected to a lubrication point (3), and a second oil passage (5) connecting the first oil passage (4) to the lubrication block (2); the first oil passage (4) and the second oil passage (5) are both rigid pipes made of stainless steel, wherein at least one of the two ends of the first oil passage (4) is an elbow structure; the inner wall of the rigid pipe is provided with a nano coating; the sealing joint between the oil cup (1), the lubrication block (2), the lubrication point (3), the first oil passage (4) and the second oil passage (5) is a snap-fit ​​self-locking joint.

2. The low-resistance lubrication oil passage for engineering machinery according to claim 1, characterized in that: The stainless steel rigid pipe has a wall thickness of not less than 2.5 mm, and its inner wall is treated with electrolytic polishing and nano-coating composite treatment, with a roughness of not more than Ra0.3 μm.

3. The low-resistance lubrication oil passage for engineering machinery according to claim 1, characterized in that: The rigid tube material was replaced with titanium alloy.

4. The low-resistance lubrication oil passage for engineering machinery according to claim 1, characterized in that: A pressure sensor is connected to the sealing joint.

5. The low-resistance lubrication oil passage for engineering machinery according to claim 1, characterized in that: The bend angle of the first oil passage (4) is in the range of 20°~30°.

6. The low-resistance lubrication oil passage for engineering machinery according to claim 1, characterized in that: The snap-fit ​​self-locking connector has a built-in spring steel snap and a fluororubber sealing ring, and the sealing pressure is not less than 8MPa.

7. The low-resistance lubrication oil passage for engineering machinery according to claim 1, characterized in that: Multiple mounting blocks (6) are provided in the middle of the rigid pipe to fix the rigid pipe to the forklift.

8. The low-resistance lubrication oil passage for engineering machinery according to claim 1, characterized in that: The lubrication point (3) includes the pulley shaft between the inner and outer masts of the stacker, the upper hinge point of the pitch cylinder, the pipeline pulley, and the chain wheel fixing shaft.

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