High strength drop forged chain

Abstract

The utility model discloses a high -strength die forging chain, including inner chain board and setting in the outer chain board of inner chain board both sides, the inner chain board includes setting in the inner chain waist part of intermediate position and setting in the inner chain end of inner chain waist part both ends, the outer ring of inner chain end is circular and its diameter is greater than the width of inner chain waist part, and the both sides of inner chain end extend outward and form convex axle, the outer chain board includes setting in the outer chain waist part of intermediate position and setting in the outer chain end of outer chain waist part both ends, is equipped with the mounting hole of cooperation with convex axle on the outer chain end, and the outer ring of outer chain end is circular and its diameter is greater than the width of outer chain waist part, the utility model discloses can make die forging chain double -point stress, avoid partial stress, and the structure is more reasonable, has reduced the drawback that the existing die forging chain adopts pin shaft alone, and has reduced the abrasion.

Description

Technical Field

[0001] This utility model relates to a high-strength forged chain, belonging to the technical field of forged chain technology. Background Technology

[0002] Currently, the sleeve roller chain conveying device used in scraper conveyors is not resistant to high temperatures or wear, is easily damaged, has a short service life, and high maintenance costs. Existing technology generally uses forged chains to replace sleeve roller chains. Forged chains can be applied to various types of conveying systems, such as forged chains for ash and slag conveying, and forged chains for coal slime conveying.

[0003] Existing forged chains have a drawback, especially on equipment with frequent turning. The drive sprocket meshes with the forged chain for transmission, and the steering wheel is shaped like a cylindrical roller. The drive sprocket and steering wheel are connected by the forged chain. When the forged chain turns, its direction is mostly changed through the steering wheel. During the turning process, generally only the middle part of the forged chain contacts the steering wheel. Figure 1 As shown, the forged chain and the steering wheel body come into contact at the point of force A. At this time, the force is applied at a single point. Especially for some chains with weight reduction grooves, the chain is very easy to be damaged due to excessive force. In addition, most forged chains use pin connections, which need to be made separately. The pins and inner and outer chain plates rotate relative to each other, resulting in greater wear and shorter service life.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] This invention addresses the shortcomings of the prior art by providing a high-strength forged chain that allows the forged chain to bear force at two points, avoiding localized stress and resulting in a more rational structure. It also reduces the drawbacks of existing forged chains that rely solely on pins, thereby reducing wear.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: A high-strength forged chain includes an inner chain plate and outer chain plates disposed on both sides of the inner chain plate; The inner chain plate includes an inner chain waist located in the middle and inner chain ends located at both ends of the inner chain waist. The outer ring of the inner chain ends is circular and its diameter is larger than the width of the inner chain waist. The two sides of the inner chain ends extend outward to form convex shafts. The outer chain plate includes an outer chain waist located in the middle and outer chain ends located at both ends of the outer chain waist. The outer chain ends are provided with mounting holes that mate with the convex shafts. The outer ring of the outer chain ends is circular and its diameter is greater than the width of the outer chain waist.

[0007] Furthermore, the inner chain waist, inner chain end, and convex shaft are integrally forged and formed as a single piece.

[0008] Furthermore, a chamfer is provided at the end of the connecting cam and the inner chain.

[0009] Furthermore, a connecting hole is provided at the waist of the inner chain, and the shape of the connecting hole is round, oval or diamond.

[0010] Furthermore, a pin hole is provided radially at the position where the convex shaft extends from the end of the outer chain, and a fixing pin is inserted into the pin hole.

[0011] Furthermore, a retaining ring is fitted onto the portion of the convex shaft that extends beyond the end of the outer chain. The retaining ring has a threaded hole along the radial direction, and the fixing pin has an external thread. The fixing pin is installed in the threaded hole of the retaining ring.

[0012] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: Both the inner and outer chain plates adopt a narrow waist-shaped structure with thickened ends and a constricted middle. The two outer chain ends of the outer chain plate and the two inner chain ends of the inner chain plate contact the steering wheel body, realizing dual-point force distribution and avoiding localized force distribution, resulting in a more reasonable structure.

[0013] The inner chain plate is integrally forged, which reduces the drawbacks of the existing die-forged chain that uses a separate pin shaft and reduces wear.

[0014] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the existing technology for the fitting of a forged chain steering wheel body; Figure 2 This is a schematic diagram of the structure of a forged chain; Figure 3 This is a schematic diagram of the structure of the die-forged chain steering wheel body in this utility model; Figure 4 This is a schematic diagram of the inner chain plate in this utility model; Figure 5 This is a top view of the inner chain plate in this utility model; Figure 6 yes Figure 4 Sectional view along AA; Figure 7 This is a schematic diagram of the structure of the outer chain plate in this utility model; Figure 8 yes Figure 7 Top view; Figure 9 This is a schematic diagram of the structure of the retaining ring 4 in this utility model.

[0016] In the picture, 1-Steering wheel body, 2-Inner chain plate, 201-Inner chain waist, 202-Inner chain end, 203-Pan shaft, 204-Pin hole, 205-Connecting hole, 3-Outer chain plate, 301-Outer chain waist, 302-Outer chain end, 4-Retaining ring, 5-Fixing pin. Detailed Implementation

[0017] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0018] like Figure 2-9 As shown, this utility model provides a high-strength forged chain, including an inner chain plate 2 and outer chain plates 3 disposed on both sides of the inner chain plate 2; The inner chain plate 2 includes an inner chain waist 201 located in the middle and inner chain ends 202 located at both ends of the inner chain waist 201, such as... Figure 4 The outer ring of the inner chain end 202 is circular and its diameter is greater than the width of the inner chain waist 201. The two sides of the inner chain end 202 extend outward to form a convex shaft 203. The outer chain plate 3 includes an outer chain waist 301 located in the middle and outer chain ends 302 located at both ends of the outer chain waist 301. The outer chain ends 302 are provided with mounting holes that cooperate with the convex shaft 203. The outer ring of the outer chain ends 302 is circular and its diameter is greater than the width of the outer chain waist 301.

[0019] The inner chain waist 201, inner chain end 202, and convex shaft 203 are integrally forged. This reduces the drawbacks of existing die-forged chains that use pins alone, and decreases wear.

[0020] The connecting cam 203 and the inner chain end 202 are chamfered to avoid stress concentration.

[0021] A connecting hole 205 is provided in the waist part 201 of the inner chain. The shape of the connecting hole 205 is circular, elliptical or rhomboid. Different components such as scrapers and hoppers can be installed on the connecting hole 205 for conveying materials.

[0022] The convex shaft 203 has a pin hole 204 radially extending from the end of the outer chain 302, and a fixing pin 5 is inserted into the pin hole 204.

[0023] Furthermore, a retaining ring 4 is fitted onto the portion of the convex shaft 203 that extends out of the outer chain end 302. The retaining ring 4 has a threaded hole along the radial direction. The fixing pin 5 has an external thread and is installed in the threaded hole of the retaining ring 4. The fixing pin 5 is inserted into the pin hole 204.

[0024] The specific working principle of this utility model: The outer chain plate 3 is installed on both sides of the inner chain plate 2. The outer chain end 302 has mounting holes that mate with the convex shaft 203. Both the inner chain plate 2 and the outer chain plate 3 adopt a narrow-waisted structure with thickened ends and a constricted middle. The two outer chain ends 302 of the outer chain plate 3 and the two inner chain ends 202 of the inner chain plate 2 contact the steering wheel body 1, achieving dual-point force distribution and avoiding localized force distribution, resulting in a more rational structure. The inner chain plate 2 is integrally forged, reducing the drawbacks of existing die-forged chains that use separate pins and minimizing wear. Although the thickness at the connecting hole 205 of the inner chain plate 2 is slightly smaller than at other locations, it does not contact the steering wheel body 1 and does not bear the radial force of the wheel body, making it more rational than the traditional die-forged chain structure. The thickened ends of the inner chain plate 2 result in a larger outer diameter, allowing it to withstand greater transmission power from the drive sprocket, and even some wear will not affect normal use.

[0025] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A high-strength forged chain, characterized in that: It includes an inner chain plate (2) and outer chain plates (3) disposed on both sides of the inner chain plate (2); The inner chain plate (2) includes an inner chain waist (201) located in the middle and inner chain ends (202) located at both ends of the inner chain waist (201). The outer ring of the inner chain ends (202) is circular and its diameter is greater than the width of the inner chain waist (201). The two sides of the inner chain ends (202) extend outward to form convex shafts (203). The outer chain plate (3) includes an outer chain waist (301) located in the middle and outer chain ends (302) located at both ends of the outer chain waist (301). The outer chain ends (302) are provided with mounting holes that cooperate with the convex shaft (203). The outer ring of the outer chain ends (302) is circular and its diameter is greater than the width of the outer chain waist (301).

2. The high-strength forged chain as described in claim 1, characterized in that: The inner chain waist (201), inner chain end (202), and convex shaft (203) are integrally forged.

3. A high-strength forged chain as described in claim 2, characterized in that: The connecting cam (203) and the inner chain end (202) are chamfered.

4. A high-strength forged chain as described in claim 1, characterized in that: A connecting hole (205) is provided in the waist part (201) of the inner chain. The shape of the connecting hole (205) is circular, elliptical or rhomboid.

5. A high-strength forged chain as described in claim 1, characterized in that: The convex shaft (203) has a pin hole (204) in the radial direction at the position where it extends out of the outer chain end (302), and a fixing pin (5) is inserted into the pin hole (204).

6. A high-strength forged chain as described in claim 5, characterized in that: A retaining ring (4) is fitted on the part of the convex shaft (203) that extends out of the outer chain end (302). The retaining ring (4) has a threaded hole along the radial direction. The fixing pin (5) has an external thread and is installed in the threaded hole of the retaining ring (4).

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