High-strength steel pintle chain pin shaft

Abstract

The utility model provides a high-strength steel pintle chain pin shaft which comprises a pin shaft body and a pin shaft barrel, the pin shaft body is a cylinder, one end of the pin shaft barrel is provided with an open groove, the pin shaft barrel is in the shape of a cylinder, the open groove is in the shape of a cylindrical groove, the pin shaft body is connected inside the open groove in an embedded mode, and the pin shaft body is connected with the pin shaft barrel in an embedded mode. A plurality of oil storage grooves are formed in the inner wall of the pin shaft cylinder and communicate with the open groove. And a plurality of oil storage grooves designed on the inner wall of the pin shaft cylinder are communicated with the oil outlet holes, so that an efficient lubricating system is formed. And along with the operation of the pin shaft barrel, the lubricating oil can be uniformly smeared on the outer surface of the pin shaft barrel, especially the part in contact with the pin shaft sleeve, so that the lubricating effect between the pin shaft and the pin shaft sleeve is greatly improved. By means of the design, smooth operation of the chain pin shaft is guaranteed, and friction and abrasion are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pin shaft production, in particular to a high-strength steel pin shaft for a pin-connected chain. Background Technique

[0002] In a mechanical transmission system, as a key connecting component, the performance stability and durability of a chain pin shaft are crucial for the operation of the entire system. However, in traditional chain pin shaft designs, the importance of the lubrication system is often overlooked, resulting in prominent friction and wear problems between the pin shaft and the pin shaft sleeve, seriously affecting the service life of the chain pin shaft and the operation efficiency of the system.

[0003] To solve this problem, the industry has begun to explore various lubrication methods to improve the lubrication effect between the pin shaft and the pin shaft sleeve. Among them, an effective method is to design oil storage grooves on the inner wall of the pin shaft cylinder and connect these oil storage grooves through oil outlet holes to form an efficient lubrication system. The basic principle of this design is that as the pin shaft cylinder rotates, the lubricating oil in the oil storage grooves will be squeezed and evenly applied to the outer surface of the pin shaft cylinder through the oil outlet holes, especially the part in contact with the pin shaft sleeve. In this way, a lubricating film can be formed between the pin shaft and the pin shaft sleeve, greatly reducing the friction coefficient between them, reducing wear, and thus improving the operation efficiency and durability of the chain pin shaft.

[0004] However, although this lubrication system has certain advantages in design, there are still some problems in actual applications. For example, the distribution of the oil storage grooves and the design of the oil outlet holes are often not reasonable enough, resulting in the lubricating oil not being evenly applied to the outer surface of the pin shaft cylinder, especially the part in contact with the pin shaft sleeve. In addition, the supply and management of the lubricating oil also face certain challenges, such as how to ensure the continuous supply of the lubricating oil and how to avoid the leakage and pollution of the lubricating oil. Content of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a high-strength steel pin shaft for a pin-connected chain.

[0006] To achieve the above purpose, the utility model adopts the following technical solution: a high-strength steel pin shaft for a pin-connected chain, including a pin shaft body and a pin shaft cylinder. The pin shaft body is a cylinder. One end of the pin shaft cylinder is provided with a slot. The shape of the pin shaft cylinder is a cylinder. The shape of the slot is a cylindrical groove. The pin shaft body is fitted and connected inside the slot. A plurality of oil storage grooves are provided on the inner wall of the pin shaft cylinder. The plurality of oil storage grooves are communicated with the slot. A plurality of fixing sleeves are fixedly connected to the outer surface of the pin shaft cylinder. The fixing sleeves are in contact with the oil storage grooves. The fixing sleeves are provided with oil outlet holes penetrating through them. The oil outlet holes are communicated with the oil storage grooves.

[0007] Preferably, an anti-corrosion film covers the outer surface of the pin shaft cylinder.

[0008] Preferably, a plurality of the oil storage grooves are distributed in an annular array centered on the central axis of the center of the slotted circle.

[0009] Preferably, the inside of the oil storage groove is filled with lubricating oil.

[0010] The utility model has the following beneficial effects:

[0011] 1. By arranging a fixing sleeve on the outer surface of the pin shaft sleeve, the utility model successfully cuts off the force transmission path on the outer surface of the pin shaft sleeve, thereby significantly improving the anti-cracking ability of the end part and the middle part of the pin shaft. This design effectively extends the service life of the pin shaft and reduces the failures and maintenance costs caused by cracking.

[0012] 2. The axial slots provided on the pin shaft sleeve enable the pin shaft to have the performance of absorbing impacts, avoiding the cracking problem caused by excessive rigidity. This innovative design enhances the toughness and durability of the pin shaft, enabling it to maintain stable performance under various complex working conditions.

[0013] 3. The multiple oil storage grooves designed on the inner wall of the pin shaft cylinder are communicated with the oil outlet holes, forming an efficient lubrication system. As the pin shaft cylinder rotates, the lubricating oil will be evenly smeared on the outer surface of the pin shaft cylinder, especially the part in contact with the pin shaft sleeve, thereby greatly improving the lubrication effect between the pin shaft and the pin shaft sleeve. This design ensures the smooth operation of the chain pin shaft and reduces friction and wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model.

[0015] Among them, 1. Pin shaft body; 2. Pin shaft cylinder; 3. Slot; 4. Oil storage groove; 5. Fixing sleeve; 6. Oil outlet hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the protection scope of the utility model. Embodiment

[0017] As Figure 1As shown in the figure, an embodiment of the present utility model provides a high-strength steel pin-connected chain pin shaft, which includes a pin shaft body 1 and a pin shaft cylinder 2. The pin shaft body 1 is a cylinder, one end of the pin shaft cylinder 2 is provided with a slot 3, the shape of the pin shaft cylinder 2 is a cylinder, and the shape of the slot 3 is a cylindrical groove. The pin shaft body 1 is fitted and connected inside the slot 3. A plurality of oil storage grooves 4 are provided on the inner wall of the pin shaft cylinder 2, and the plurality of oil storage grooves 4 communicate with the slot 3. A plurality of fixing sleeves 5 are fixedly connected to the outer surface of the pin shaft cylinder 2, the fixing sleeves 5 are in contact with the oil storage grooves 4, and an oil outlet hole 6 is provided through the fixing sleeves 5, and the oil outlet hole 6 communicates with the oil storage grooves 4.

[0018] The outer surface of the pin shaft cylinder 2 is covered with an anti-corrosion film. This design effectively isolates the direct contact between the pin shaft cylinder 2 and the external corrosive environment, significantly improves its anti-corrosion ability, and thus extends the service life of the pin shaft cylinder 2 and the entire pin-connected chain pin shaft.

[0019] The plurality of oil storage grooves 4 are arranged in a circular array centered on the central axis of the center of the slot 3. This design ensures the uniform distribution of the lubricating oil on the inner wall of the pin shaft cylinder 2. As the pin shaft cylinder 2 rotates, the lubricating oil in the oil storage grooves 4 can fully lubricate the contact surface between the pin shaft and the pin shaft sleeve, reducing friction and wear, and improving the operating efficiency and service life of the pin shaft.

[0020] The inside of the oil storage groove 4 is filled with lubricating oil. This design ensures the continuous supply of lubricating oil. Through the communication between the oil outlet hole 6 and the oil storage groove 4, the lubricating oil can be continuously transported to the outer surface of the pin shaft cylinder 2, especially the part in contact with the pin shaft sleeve, thus ensuring the lubrication effect during the long-term operation of the pin shaft and enhancing the reliability and stability of the lubrication system.

[0021] Working principle: When using the high-strength steel pin-connected chain pin shaft, the pin shaft body 1 is firmly fitted in the slot 3 opened inside the pin shaft cylinder 2, ensuring a tight connection between the two. Especially, a plurality of oil storage grooves 4 are ingeniously designed on the inner wall of the pin shaft cylinder 2. These oil storage grooves 4 not only communicate with the slot 3 but also are arranged in a circular array centered on the central axis of the center of the slot 3 to ensure the uniform distribution of the lubricating oil. On the outer surface of the pin shaft cylinder 2, the fixing sleeves 5 are ingeniously arranged not only in close contact with the oil storage grooves 4 but also provided with oil outlet holes 6, and these oil outlet holes 6 communicate with the oil storage grooves 4, forming an efficient lubrication system. As the pin shaft cylinder 2 rotates, the lubricating oil filled in the oil storage grooves 4 will slowly flow out through the oil outlet holes 6 and be evenly smeared on the outer surface of the pin shaft cylinder 2, especially the part in contact with the pin shaft sleeve, thereby greatly improving the lubrication effect between the pin shaft and the pin shaft sleeve and ensuring the smooth operation and long-term durability of the pin shaft.

[0022] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-strength steel pin joint chain pin shaft, comprising a pin shaft body (1) and a pin shaft cylinder (2), characterized in that: The pin shaft body (1) is a cylinder. One end of the pin shaft cylinder (2) is provided with a slot (3). The shape of the pin shaft cylinder (2) is a cylinder. The shape of the slot (3) is a cylindrical groove. The pin shaft body (1) is fitted and connected inside the slot (3). A plurality of oil storage grooves (4) are provided on the inner wall of the pin shaft cylinder (2). The plurality of oil storage grooves (4) communicate with the slot (3). A plurality of fixing sleeves (5) are fixedly connected to the outer surface of the pin shaft cylinder (2). The fixing sleeves (5) are in contact with the oil storage grooves (4). An oil outlet hole (6) is provided through the fixing sleeve (5). The oil outlet hole (6) communicates with the oil storage groove (4).

2. The high-strength steel pin coupling chain pin according to claim 1, wherein: The outer surface of the pin shaft cylinder (2) is covered with an anti-corrosion film.

3. A high-strength steel pin coupling chain pin according to claim 1, characterized in that: The plurality of oil storage grooves (4) are arranged in a circular array centered on the central axis of the center of the slot (3).

4. A high-strength steel pin coupling chain pin according to claim 1, characterized in that: The inside of the oil storage groove (4) is filled with lubricating oil.

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