A high strength chain structure

Abstract

The utility model relates to a kind of high-strength chain structure, the high-strength chain structure includes inner link and outer link, the inner link and outer link rotation connection, it is characterized in that, the inner link includes inner chain plate, sleeve and roller, the roller is sleeved in sleeve outside, inner chain plate is fixedly arranged in the both sides of sleeve, the outer link includes outer chain plate, pin shaft and lock piece, the pin shaft passes through the sleeve, outer chain plate is respectively installed in the both ends of pin shaft, lock piece is arranged in the outside of outer chain plate, lock piece is fixedly connected with pin shaft;Outer chain plate and inner chain plate are same shape, the outer chain plate includes first straight side, second straight side, first curved side and second curved side, the first straight side and second straight side are symmetrically arranged, first curved side and second curved side are symmetrically arranged, first straight side both sides are adjacent with first curved side and second curved side respectively, the first straight side and second straight side are same, the first curved side and second curved side are same, with the advantages of simple structure, high chain strength.

Description

Technical Field

[0001] This invention relates to the field of chain structure technology, and more particularly to a high-strength chain structure. Background Technology

[0002] Chains are a versatile mechanical product, widely used in transmission, conveying, and other special applications due to their combination of gear and belt characteristics. Chains are typically composed of links connected sequentially. Each link consists of an outer link plate, an inner link plate, a pin, rollers, and a sleeve. Both the outer and inner link plates have through holes and are connected by a pin. A sleeve is installed outside the pin, and rollers are positioned between the inner link plates to achieve the transmission function.

[0003] Existing ordinary chains have low strength, while high-strength chains have problems such as complicated manufacturing processes and complex structures.

[0004] Therefore, a high-strength chain structure is provided to solve the above problems. Utility Model Content

[0005] The main purpose of this invention is to solve the problems in the existing technology, such as the low strength of ordinary chains and the complicated manufacturing process and structure of high-strength chains.

[0006] This utility model provides a high-strength chain structure, the high-strength chain structure comprising: An inner link and an outer link are rotatably connected, characterized in that the inner link includes an inner link plate, a sleeve, and a roller, the roller being sleeved on the outside of the sleeve, and inner link plates being fixedly arranged on both sides of the sleeve; the outer link includes an outer link plate, a pin, and a locking plate, the pin passing through the sleeve, the outer link plates being respectively installed at both ends of the pin, and the locking plate being arranged on the outside of the outer link plate and fixedly connected to the pin. The outer and inner links have the same shape. The outer link includes a first straight edge, a second straight edge, a first curved edge, and a second curved edge. The first straight edge and the second straight edge are symmetrically arranged, and the first curved edge and the second curved edge are symmetrically arranged. The two sides of the first straight edge are adjacent to the first curved edge and the second curved edge, respectively. The first straight edge and the second straight edge are the same, and the first curved edge and the second curved edge are the same.

[0007] Optionally, the inner chain plate is provided with a first chain plate hole in conjunction with the sleeve, and the sleeve and the first chain plate hole are interference-fitted.

[0008] Optionally, the outer chain plate and the pin are provided with a second chain plate hole.

[0009] Optionally, the outer chain plate and the inner chain plate are made of 42CrMo, 35CrMo or 45Mn2.

[0010] Optionally, the pin surface is provided with micron-sized grooves, which are used to absorb lubricating oil.

[0011] Optionally, the inner chain plate, sleeve, roller, outer chain plate, pin and locking plate are all plated with zinc chromium coating.

[0012] Optionally, the ratio of the width of the inner chain plate to the diameter of the hole in the first chain plate is 3.5-4.5; the ratio of the thickness of the inner chain plate to the diameter of the hole in the first chain plate is 0.9-1.1; and the ratio of the width of the inner chain plate to the thickness of the inner chain plate is 3.18-5.

[0013] Optionally, the ratio of the width of the outer chain plate to the diameter of the hole in the second chain plate is 3.5-4.5; the ratio of the thickness of the outer chain plate to the diameter of the hole in the second chain plate is 0.9-1.1; and the ratio of the width of the outer chain plate to the thickness of the outer chain plate is 3.18-5.

[0014] This utility model has a simple structure, abandoning the traditional straight-edge rounded corner design and adopting a chain plate outline similar to a waist drum. This shape enables more uniform stress distribution, significantly reduces stress concentration around the holes, thereby improving fatigue strength. In addition, this application has a simple structure and uses high-performance alloy steel and advanced high-strength steel to improve the strength of the chain. Attached Figure Description

[0015] Figure 1 This is a side view of the structure of this utility model.

[0016] Figure 2 This is a top-view partial sectional view of the present invention. Detailed Implementation

[0017] This utility model provides a high-strength chain structure, including: an inner link and an outer link, which are rotatably connected. The inner link includes an inner chain plate, a sleeve, and a roller. The roller is sleeved on the outside of the sleeve, and inner chain plates are fixedly arranged on both sides of the sleeve. The outer link includes an outer chain plate, a pin, and a locking plate. The pin passes through the sleeve, and the outer chain plates are respectively installed at both ends of the pin. The locking plate is located on the outside of the outer chain plate and is fixedly connected to the pin. The outer and inner chain plates have the same shape. The outer chain plate includes a first straight edge, a second straight edge, a first curved edge, and a second curved edge. The first and second straight edges are symmetrically arranged, as are the first and second curved edges. The first straight edge is adjacent to the first and second curved edges on both sides, and the first and second straight edges are identical. The main purpose of this utility model is to solve the problems of low strength in existing ordinary chains and cumbersome manufacturing processes and complex structures in high-strength chains.

[0018] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" or "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0019] Example Reference manual attached Figure 1-2 This embodiment provides a high-strength chain structure, which includes: The inner link 1 and the outer link 2 are rotatably connected. The inner link includes an inner link plate 101, a sleeve 103 and a roller 102. The roller 102 is sleeved on the outside of the sleeve 103. The inner link plate 101 is fixedly arranged on both sides of the sleeve 103. The outer link 2 includes an outer link plate 203, a pin 202 and a locking plate 201. The pin 202 passes through the sleeve 103. The outer link plate 203 is respectively installed at both ends of the pin 202. The locking plate 201 is arranged on the outside of the outer link plate 203 and is fixedly connected to the pin 202. The outer link plate 203 and the inner link plate 101 have the same shape. The outer link plate 203 includes a first straight edge, a second straight edge, a first curved edge, and a second curved edge. The first straight edge and the second straight edge are symmetrically arranged, as are the first curved edge and the second curved edge. The first straight edge is adjacent to the first curved edge and the second curved edge on both sides, respectively. The first straight edge and the second straight edge are identical, as are the first curved edge and the second curved edge. The outline of this link plate is drum-shaped or hyperbolic. This shape allows for a more uniform stress distribution and significantly reduces stress concentration around the holes, thereby improving fatigue strength.

[0020] The inner link plate 101 has a first link plate hole that fits into the sleeve 103, and the sleeve 103 and the first link plate hole are interference-fitted. The outer link plate and the inner link plate are formed by high-speed stamping or laser cutting to ensure accurate contour dimensions, smooth cuts without burrs, and reduce stress concentration sources.

[0021] The outer chain plate 203 and the pin 202 are provided with a second chain plate hole.

[0022] The outer link plate 203 and the inner link plate 101 are made of 42CrMo, 35CrMo or 45Mn2.

[0023] The surface of the pin 202 is provided with micron-level grooves, which are used to absorb lubricating oil.

[0024] All parts are quenched and tempered at high temperatures to obtain a tempered sorbite structure with excellent strength and toughness, thus improving the chain's strength. For the holes in the first and second chain plates, a compressive stress layer is formed by pressing the hole walls with hard rollers.

[0025] The inner chain plate 101, sleeve 103, roller 102, outer chain plate 203, pin 202 and locking plate 201 are all plated with zinc chromium coating.

[0026] Example Reference manual attached Figure 1-2 This embodiment provides a high-strength chain structure, which includes: The inner link 1 and the outer link 2 are rotatably connected. The inner link includes an inner link plate 101, a sleeve 103 and a roller 102. The roller 102 is sleeved on the outside of the sleeve 103. The inner link plate 101 is fixedly arranged on both sides of the sleeve 103. The outer link 2 includes an outer link plate 203, a pin 202 and a locking plate 201. The pin 202 passes through the sleeve 103. The outer link plate 203 is respectively installed at both ends of the pin 202. The locking plate 201 is arranged on the outside of the outer link plate 203 and is fixedly connected to the pin 202. The outer link plate 203 and the inner link plate 101 have the same shape. The outer link plate 203 includes a first straight edge, a second straight edge, a first curved edge, and a second curved edge. The first straight edge and the second straight edge are symmetrically arranged, as are the first curved edge and the second curved edge. The first straight edge is adjacent to the first curved edge and the second curved edge on both sides, respectively. The first straight edge and the second straight edge are identical, as are the first curved edge and the second curved edge. The outline of this link plate is drum-shaped or hyperbolic. This shape allows for a more uniform stress distribution and significantly reduces stress concentration around the holes, thereby improving fatigue strength.

[0027] The inner link plate 101 has a first link plate hole that fits into the sleeve 103, and the sleeve 103 and the first link plate hole are interference-fitted. The outer link plate and the inner link plate are formed by high-speed stamping or laser cutting to ensure accurate contour dimensions, smooth cuts without burrs, and reduce stress concentration sources.

[0028] The outer chain plate 203 and the pin 202 are provided with a second chain plate hole.

[0029] The outer link plate 203 and the inner link plate 101 are made of 42CrMo, 35CrMo or 45Mn2.

[0030] The surface of the pin 202 is provided with micron-level grooves, which are used to absorb lubricating oil.

[0031] All parts are quenched and tempered at high temperatures to obtain a tempered sorbite structure with excellent strength and toughness, thus improving the chain's strength. For the holes in the first and second chain plates, a compressive stress layer is formed by pressing the hole walls with hard rollers.

[0032] The inner chain plate 101, sleeve 103, roller 102, outer chain plate 203, pin 202 and locking plate 201 are all plated with zinc chromium coating.

[0033] The ratio of the width of the inner chain plate 101 to the diameter of the hole in the first chain plate is 3.5-4.5; the ratio of the thickness of the inner chain plate 101 to the diameter of the hole in the first chain plate is 0.9-1.1; and the ratio of the width of the inner chain plate 101 to the thickness of the inner chain plate 101 is 3.18-5.

[0034] The ratio of the width of the outer chain plate 203 to the diameter of the hole in the second chain plate is 3.5-4.5; the ratio of the thickness of the outer chain plate 203 to the diameter of the hole in the second chain plate is 0.9-1.1; and the ratio of the width of the outer chain plate 203 to the thickness of the outer chain plate 203 is 3.18-5.

[0035] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-strength chain structure, comprising inner links and outer links, wherein the inner links and outer links are rotatably connected, characterized in that, The inner link includes an inner link plate, a sleeve, and a roller. The roller is sleeved on the outside of the sleeve. Inner link plates are fixedly arranged on both sides of the sleeve. The outer link includes an outer link plate, a pin, and a locking plate. The pin passes through the sleeve. The outer link plates are respectively installed at both ends of the pin. The locking plate is arranged on the outside of the outer link plate and is fixedly connected to the pin. The outer and inner links have the same shape. The outer link includes a first straight edge, a second straight edge, a first curved edge, and a second curved edge. The first straight edge and the second straight edge are symmetrically arranged, and the first curved edge and the second curved edge are symmetrically arranged. The two sides of the first straight edge are adjacent to the first curved edge and the second curved edge, respectively. The first straight edge and the second straight edge are the same, and the first curved edge and the second curved edge are the same.

2. The high-strength chain structure according to claim 1, characterized in that, The inner chain plate has a first chain plate hole that cooperates with the sleeve, and the sleeve and the first chain plate hole are interference fit.

3. The high-strength chain structure according to claim 2, characterized in that, The outer chain plate and the pin are provided with a second chain plate hole.

4. The high-strength chain structure according to claim 3, characterized in that, The outer and inner chain plates are made of 42CrMo, 35CrMo, or 45Mn2.

5. The high-strength chain structure according to claim 4, characterized in that, The pin surface is provided with micron-level grooves, which are used to absorb lubricating oil.

6. The high-strength chain structure according to claim 5, characterized in that, The inner chain plate, sleeve, roller, outer chain plate, pin, and locking plate are all plated with zinc chromium coating.

7. The high-strength chain structure according to claim 6, characterized in that, The ratio of the width of the inner chain plate to the diameter of the hole in the first chain plate is 3.5-4.5; the ratio of the thickness of the inner chain plate to the diameter of the hole in the first chain plate is 0.9-1.1; and the ratio of the width of the inner chain plate to its thickness is 3.18-5.

8. The high-strength chain structure according to claim 7, characterized in that, The ratio of the width of the outer chain plate to the diameter of the hole in the second chain plate is 3.5-4.5; the ratio of the thickness of the outer chain plate to the diameter of the hole in the second chain plate is 0.9-1.1; and the ratio of the width of the outer chain plate to the thickness of the outer chain plate is 3.18-5.

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