Plate type pin shaft chain

Abstract

The utility model provides a plate type pin shaft chain which comprises a pin shaft, inner chain plates and outer chain plates. Each pin shaft is provided with a pair of inner chain plates and a pair of outer chain plates; the pair of inner chain plates can be rotatably mounted at the two ends of the pin shaft through the mounting holes of the inner chain plates; the pair of outer chain plates are fastened at the two ends of the pin shaft through the mounting holes in an interference fit manner; for each end of the pin shaft, the outer chain plate is positioned on the outer side of the inner chain plate; the two ends of each pin shaft are respectively provided with a stop ring protruding outwards. For each end of the pin shaft, the outer chain plate and the inner chain plate are located on the outer sides of the corresponding stop rings respectively, and teeth of the gear are meshed between the stop rings at the two ends of the pin shaft. When the chain runs, teeth of the gears are located between the stop rings at the two ends, the gears cannot axially extrude the inner chain plates, the inner chain plates cannot axially extrude the outer chain plates, interference fit between the outer chain plates and the pin shafts cannot be damaged, and long-term stable running of the chain is facilitated.

Description

Technical Field

[0001] The present invention relates to chain technology, and more particularly to leaf pin chains. Background Art

[0002] like Figure 1-3 The plate pin chain of the prior art is shown, which includes a pin 10, an inner link plate 11, and an outer link plate 12; a pair of inner link plates and a pair of outer link plates are installed for each pin. A pair of inner link plates can be rotatably installed at both ends of the pin 10 through their mounting holes; a pair of outer link plates are fastened to both ends of the pin through their mounting holes in an interference fit manner; for each end of the pin, the outer link plate is located on the outside of the inner link plate. The diameter of the middle part 10a of the pin is larger than the diameter of the two ends 10b, forming a step, and the inner link plate is confined between the step and the outer link plate. The teeth of the gear mesh between the inner link plates at both ends of the pin. During the operation of the chain, the teeth of the gear will inevitably squeeze the inner link plate from the inside, and the inner link plate will squeeze the outer link plate. Long-term repeated squeezing can easily cause the interference fit between the outer link plate and the pin to be destroyed, thereby causing the outer link plate to loosen. Utility Model Content

[0003] In view of the above problems, the present application aims to propose a plate-type pin chain, which can effectively prevent the interference fit between the outer link plate and the pin from being destroyed.

[0004] The plate-type pin chain of the present application comprises: a pin, an inner link plate, and an outer link plate; a pair of inner link plates and a pair of outer link plates are installed for each pin; a pair of inner link plates are rotatably installed at both ends of the pin through their mounting holes; a pair of outer link plates are fastened to both ends of the pin through their mounting holes in an interference fit manner; for each end of the pin, the outer link plate is located on the outer side of the inner link plate;

[0005] Each pin shaft has two ends formed with outwardly protruding stop rings; for each end of the pin shaft, the outer link plate and the inner link plate are respectively located on the outer sides of the corresponding stop rings, and the teeth of the gear are meshed between the stop rings at the two ends of the pin shaft.

[0006] Preferably, the inner side of each stop ring forms an inclined guide surface.

[0007] The plate-type pin chain of the present application forms a stop ring on the pin so that the stop ring is located between the teeth of the gear and the inner chain plate, thereby avoiding axial extrusion of the inner chain plate by the teeth of the gear during operation, and further avoiding axial extrusion of the inner chain plate by the inner chain plate on the outer chain plate, thereby preventing the interference fit between the pin and the outer chain plate from being destroyed. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a three-dimensional structural schematic diagram of a plate-type pin chain in the prior art;

[0009] Figure 2 for Figure 1 A schematic diagram of the top view structure of a plate pin chain;

[0010] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the pin of the plate type pin chain;

[0011] Figure 4 This is a schematic diagram of the three-dimensional structure of the plate pin chain of the present application;

[0012] Figure 5 for Figure 4 A schematic diagram of the top view structure of a plate pin chain;

[0013] Figure 6 for Figure 4 Schematic diagram of the top view structure of the pin of the plate pin chain. DETAILED DESCRIPTION

[0014] Below, the plate pin chain of the present application is described in detail with reference to the accompanying drawings.

[0015] The plate pin chain of the present application comprises: a pin 10, an inner link plate 11, and an outer link plate 12; a pair of inner link plates 11 and a pair of outer link plates 12 are installed for each pin 10; a pair of inner link plates 11 are rotatably installed at both ends of the pin 10 through their mounting holes; a pair of outer link plates 12 are fastened to both ends of the pin 10 through their mounting holes in an interference fit manner; for each end of the pin 10, the outer link plate 12 is located outside the inner link plate 11. This is the same as the prior art.

[0016] The difference of the plate pin chain of the present application is that a stop ring 10c protruding outward is formed at both ends of each pin 10; for each end of the pin 10, the outer link plate 12 and the inner link plate 11 are respectively located on the outside of the corresponding stop ring 10c, and the teeth of the gear are meshed between the stop rings 10c at both ends of the pin 10.

[0017] An inclined guide surface 10d is formed on the inner side of each stopper ring 10c.

[0018] When the chain is running, the teeth of the gear are located between the stop rings at both ends. The gear will not cause axial extrusion to the inner link plate, so the inner link plate will not cause axial extrusion to the outer link plate. Therefore, the interference fit between the outer link plate and the pin shaft will not be destroyed, which is conducive to the long-term and stable operation of the chain.

Claims

1. A plate pin chain, comprising: Pin shaft, inner link plate, outer link plate; each pin shaft is equipped with a pair of inner link plates and a pair of outer link plates; A pair of inner link plates are rotatably mounted on both ends of the pin shaft through their mounting holes; A pair of outer link plates are fastened to both ends of the pin shaft by means of interference fit through their mounting holes; for each end of the pin shaft, the outer link plate is located outside the inner link plate; the characteristics are: Each pin shaft has two ends formed with outwardly protruding stop rings; for each end of the pin shaft, the outer link plate and the inner link plate are respectively located on the outer sides of the corresponding stop rings, and the teeth of the gear are meshed between the stop rings at the two ends of the pin shaft.

2. The plate pin chain according to claim 1, characterized in that: The inner side of each stop ring forms an inclined guide surface.

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