A pre-embedded structure of a crankcase lubricating oil pipeline

Abstract

The utility model discloses a kind of crankcase lubricating oil pipeline built-in embedded structure, including crankcase, oil hole is equipped in each bearing seat of the crankcase, it is characterized by being passed through up and down, the crankcase is cast into shape, and when the crankcase is cast into shape, a main oil pipe is embedded in the bottom of crankcase, main oil pipe transversely penetrates the bottom of crankcase, and leakage-proof layer is cast outside main oil pipe, main oil pipe is communicated with each oil hole lower end respectively, and corresponding main oil pipe side wall is matched and equipped with docking hole. The utility model is simple in structure, convenient to process, does not need welding, and does not need to consider the problem of sealing failure.

Description

Technical Field

[0001] This utility model relates to an improved invention of a compressor crankcase, and more particularly to an improved invention of a pre-embedded structure for a crankcase lubricating oil pipeline. Background Technology

[0002] In reciprocating compressors, the crankcase is used to mount transmission components such as the crankshaft and connecting rods, and often also functions as an oil tank. When lubrication is required for various friction points, oil holes and external pipes are typically used. Traditional external pipe methods are costly and complex, requiring the manufacture of a series of non-standard parts, consideration of sealing at various joints, and pressure pipeline control for welded joints of pipes larger than DN50.

[0003] See appendix Figure 2 Traditional lubricating oil pipelines consist of custom-made oil pipes (a1), gaskets (a2), O-rings (a3), non-standard flanges (a4), connectors (a5), steel pipes (a6), elbows (a7), and other components. Their complex structure, coupled with unit vibration, can lead to lubrication failure due to oil leakage at the seals. Furthermore, the machining of the oil holes (a9) and connecting holes (a8) in the lubricating oil pipelines can only be performed on machining centers, placing high demands on the machining equipment. Additionally, considering the rotational space of the crankshaft and cranks, the oil tank in the lubricating oil pipeline is typically deep, large, and heavy. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a built-in pre-embedded structure for crankcase lubricating oil pipeline.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the crankcase lubricating oil pipeline has a built-in embedded structure, including a crankcase, and each bearing seat of the crankcase is provided with an oil hole that runs vertically through it. The crankcase is characterized in that: the crankcase is cast, and when the crankcase is cast, a main oil pipe is pre-embedded at the bottom of the crankcase. The main oil pipe runs horizontally through the bottom of the crankcase, and a leak-proof layer is cast on the outside of the main oil pipe. The main oil pipe is connected to the lower end of each oil hole, and a mating hole is provided on the side wall of the corresponding main oil pipe.

[0006] The leak-proof layer is cast from HT250 or QT450-10 material and wraps around the outer perimeter of the main oil pipe.

[0007] The main oil pipe is a standard steel pipe.

[0008] The oil holes are formed by drilling with a drilling machine.

[0009] The beneficial effects of this utility model are that the improved crankcase lubricating oil pipeline has an internal pre-embedded structure. It only requires casting and pre-embedding one main oil pipe and casting a leak-proof layer on the outside to replace all the parts of the traditional structure. There is no need for welding and no need to consider the problem of sealing failure. Moreover, the oil hole can be machined on a drilling machine. In addition, due to the simple composition, the oil tank can be made to a great extent shallow, with small size and low cost, which reduces the overall height of the unit and improves the stability of equipment operation. Attached Figure Description

[0010] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a diagram of a traditional lubricating oil pipeline structure. Detailed Implementation

[0013] The accompanying drawings illustrate the structure of this utility model, and further details will be described below in conjunction with the drawings. In this embodiment, the components included in the drawings... Figure 1 The crankcase lubricating oil pipeline has a built-in embedded structure, including a crankcase 1. Each bearing seat 2 of the crankcase 1 is provided with an oil hole 3 that runs vertically through it. The crankcase 1 is cast, and when the crankcase 1 is cast, a main oil pipe 4 is pre-embedded at the bottom of the crankcase 1. The main oil pipe 4 runs horizontally through the bottom of the crankcase 1, and a leak-proof layer 5 is cast on the outside of the main oil pipe 4. The main oil pipe 4 is connected to the lower end of each oil hole 3. The corresponding main oil pipe 4 is provided with a mating hole on its side wall. The mating hole can be pre-formed or drilled into the bottom of the main oil pipe 4 to form the mating hole when the oil hole 3 is drilled.

[0014] In this invention, all parts of the traditional structure can be replaced by pre-embedding a main oil pipe 4 at the bottom of the crankcase 1 during the casting process and casting a leak-proof layer 5 on the outside. No welding is required and there is no need to consider the problem of sealing failure.

[0015] As a further improved implementation, the leak-proof layer 5 is cast from HT250 or QT450-10 material and wraps around the outer periphery of the main oil pipe 4. The leak-proof layer 5 is integrated with the machine body and serves to prevent leakage from the main oil pipe 4.

[0016] As a further improved specific implementation, the main oil pipe 4 is a standard steel pipe.

[0017] As a further improved specific implementation, the oil hole 3 is formed by drilling with a drilling machine, which is convenient and quick and has low requirements for processing equipment.

[0018] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A pre-embedded structure for a crankcase lubricating oil pipeline, comprising a crankcase, wherein each bearing seat of the crankcase is provided with an oil hole that runs vertically through it, characterized in that: The crankcase is cast, and during the casting process, a main oil pipe is pre-embedded at the bottom of the crankcase. The main oil pipe runs horizontally through the bottom of the crankcase, and a leak-proof layer is cast on the outside of the main oil pipe. The main oil pipe is connected to the lower end of each oil hole, and a mating hole is provided on the side wall of the corresponding main oil pipe.

2. The in-crankcase-lubricating-oil-piping-embedded structure according to claim 1, characterized by: The leak-proof layer is cast from HT250 or QT450-10 material and wraps around the outer perimeter of the main oil pipe.

3. The in-crankcase-lubricating-oil-piping-embedded structure according to claim 1, characterized by: The main oil pipe is a standard steel pipe.

4. The in-crankcase-lubricating-oil-passage-embedded structure according to claim 1, characterized by: The oil holes are formed by drilling with a drilling machine.

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