Combined metal chain

Abstract

The utility model relates to the technical field of chains, and discloses a combined type metal chain which comprises two inner chain plates, two outer chain plates arranged outside the two inner chain plates, a pin shaft and a roller, the pin shaft and the roller are arranged between the two inner chain plates, the roller is sleeved outside the pin shaft, two ends of the pin shaft respectively penetrate through the two outer chain plates, and the two outer chain plates are connected with the pin shaft. Extension rods are fixedly connected to the two ends of each pin shaft, a plurality of lifting cavities are formed in the outer walls of the extension rods, extrusion springs are fixedly connected to the inner walls of the multiple lifting cavities, clamping blocks are fixedly connected to the other ends of the multiple extrusion springs, and the sides, close to the inner chain plates, of the multiple clamping blocks abut against the side walls of the outer chain plates. According to the combined metal chain, the extension rods are arranged at the connecting positions of the pin shafts and the outer chain plates, and the extrusion springs and the clamping blocks are arranged in the lifting cavities of the extension rods, so that when a user disassembles the chain, the outer chain plates can be taken down from the pin shafts only by pressing the clamping blocks downwards, and therefore all parts of the chain can be separated conveniently and quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of chains, in particular to a combined metal chain. Background Art

[0002] Metal chains are chain-like structures composed of multiple metal rings or links connected to each other by welding, riveting or perforating. They are widely used in mechanical transmission, traction, load-bearing, decoration and safety protection.

[0003] The patent with the current announcement number CN219242559U discloses a roller chain and a chain transmission device. The roller chain includes an outer link, an inner link, a first roller and a second roller; the outer link includes two outer chain plates and a pin fixedly connecting the two outer chain plates; the inner link includes two inner chain plates and a sleeve fixedly connecting the two inner chain plates, the inner link and the outer link are alternately connected by a pin along the length direction of the roller chain, and the sleeve is sleeved on the outside of the pin; the first roller is sleeved on the outside of the sleeve, and the first roller is configured to rotate relative to the sleeve; every two second rollers are sleeved on the outside of the sleeve and distributed on both sides of the first roller, and the second roller is configured to rotate relative to the sleeve. In this application, by sleeve-mounting the first roller and the second roller on the outside of the sleeve, when the sprocket is meshed with the roller chain, there is rolling friction between the sprocket and the first roller and the second roller, thereby reducing the wear of the roller chain on the shock-absorbing rubber on the sprocket, thereby reducing the noise between the chain and the sprocket.

[0004] However, the above roller chain still has the following problems:

[0005] Most of the current chains are composed of multiple inner link plates, outer link plates, pins and rollers connected to each other. When one of the link plates is cracked, in order to ensure the transmission of the chain, the cracked component often needs to be replaced. However, most of the current roller chains are integrated, and it is not easy to disassemble adjacent inner link plates, outer link plates, pins and rollers, which is inconvenient. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a combined metal chain. When the user disassembles the chain, he only needs to press down a number of clamping blocks to remove the outer link plate from the pin shaft, thereby completing the separation between the various components of the chain, which is convenient and quick.

[0007] The utility model provides the following technical solutions: a combined metal chain, comprising two inner chain plates, two outer chain plates installed outside the two inner chain plates, a pin shaft and a roller installed between the two inner chain plates, the roller sleeve is arranged on the outside of the pin shaft, the two ends of the pin shaft respectively penetrate the two outer chain plates, and the two ends of the pin shaft are fixedly connected with extension rods, the outer wall of the extension rod is provided with a plurality of lifting cavities, the inner walls of the plurality of lifting cavities are fixedly connected with extrusion springs, the other ends of the plurality of extrusion springs are fixedly connected with clamping blocks, and the side of the plurality of clamping blocks close to the inner chain plate is against the side wall of the outer chain plate.

[0008] Furthermore, a sliding cavity is provided on the bottom surface of the lifting cavity, a side of the clamping block close to the extrusion spring is fixedly connected to a limiting rod, and an outer wall of the limiting rod is slidably connected to an inner wall of the sliding cavity.

[0009] Furthermore, one side of the clamping block close to the extrusion spring and one end of the limiting rod away from the extrusion spring are fixedly connected with anti-dropping plates, and the outer walls of the two anti-dropping plates are slidably connected to the inner wall of the lifting cavity and the inner wall of the sliding cavity respectively.

[0010] Furthermore, one end of the extension rod away from the pin is fixedly connected with a ramp block.

[0011] Furthermore, the inclination angle of the slope block slope is the same as the inclination angle of the clamping block slope.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] This combined metal chain is provided with an extension rod at the connection between the pin shaft and the outer link plate, and an extrusion spring and a clamping block are provided inside the lifting cavity of the extension rod. When the user disassembles the chain, he only needs to press down a number of clamping blocks to remove the outer link plate from the pin shaft, thereby completing the separation between the various components of the chain, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall appearance of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of part of the appearance of the utility model;

[0016] Figure 3 It is a detailed connection diagram of the ramp block, the clamping block, the pin and other components of the utility model.

[0017] In the figure: 1, inner link plate; 2, outer link plate; 3, roller; 4, ramp block; 5, clamping block; 6, pin shaft; 7, extension rod; 8, anti-slip sheet; 9, extrusion spring; 10, limit rod; 701, lifting chamber; 702, sliding chamber. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] See also Figure 1-Figure 3 A combined metal chain includes two inner link plates 1, two outer link plates 2 installed outside the two inner link plates 1, a pin shaft 6 and a roller 3 installed between the two inner link plates 1, the roller 3 is sleeved on the outside of the pin shaft 6, and the two ends of the pin shaft 6 respectively pass through the two outer link plates 2, and the two ends of the pin shaft 6 are fixedly connected with an extension rod 7, and the extension rod 7 is fixedly connected with the extension rod 7, and the outer wall of the extension rod 7 is provided with a plurality of lifting cavities 701, and the inner walls of the plurality of lifting cavities 701 are fixedly connected with extrusion springs 9, and the other ends of the plurality of extrusion springs 9 are fixedly connected with a clamping block 5, and the side of the plurality of clamping blocks 5 close to the inner link plate 1 is against the side wall of the outer link plate 2.

[0020] The combined metal chain in the utility model is similar to the existing combined metal chain structure, such as a roller chain and a chain transmission device disclosed in the patent publication number CN219242559U. Figures 1 to 3 As shown, when disassembling the combined metal chain of the utility model, it is only necessary to press down a number of clamping blocks 5 to remove the outer link plate 2 from the pin shaft 6, so that the separation between the various components of the chain can be completed, which is convenient and quick. When the chain needs to be assembled later, it is only necessary to align the two installation ports of the outer link plate 2 with the two pin shafts 6 and slide inward. During the sliding period, the extrusion spring 9 in the lifting chamber 701 will be compressed, and the clamping block 5 can be stored in the lifting chamber 701. After the outer link plate 2 passes through the clamping block 5, the clamping block 5 will rise again under the action of the extrusion spring 9, and the outer link plate 2 can be fixed from the other side of the outer link plate 2.

[0021] Please refer to Figure 1-Figure 3 The bottom surface of the lifting chamber 701 is provided with a sliding chamber 702, and the side of the clamping block 5 close to the extrusion spring 9 is fixedly connected to the limiting rod 10, and the outer wall of the limiting rod 10 is slidably connected to the inner wall of the sliding chamber 702. By providing the limiting rod 10, it is possible to prevent the clamping block 5 from tilting during the ascending and descending process, resulting in the clamping of the inner wall of the lifting chamber 701.

[0022] Please refer to Figure 1-Figure 3 The side of the block 5 close to the extrusion spring 9 and the end of the limit rod 10 away from the extrusion spring 9 are fixedly connected with an anti-drop sheet 8, and the outer walls of the two anti-drop sheets 8 are respectively slidably connected with the inner wall of the lifting chamber 701 and the inner wall of the sliding chamber 702. By providing the anti-drop sheet 8, the block 5 can be prevented from falling from the lifting chamber 701.

[0023] Please refer to Figure 1-Figure 3The end of the extension rod 7 away from the pin 6 is fixedly connected with a ramp block 4. By providing the ramp block 4, when installing the outer link plate 2, the mounting hole of the outer link plate 2 can be aligned with the ramp block 4 first, and then squeezed onto the extension rod 7 from the slope of the ramp block 4, making the installation more convenient.

[0024] Please refer to Figure 1-Figure 3 The inclination angle of the inclined surface of the ramp block 4 is the same as the inclination angle of the inclined surface of the clamping block 5. The same angles can make the operation more convenient when squeezing the outer link plate 2.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined metal chain, comprising two inner link plates (1), two outer link plates (2) mounted outside the two inner link plates (1), a pin (6) and a roller (3) mounted between the two inner link plates (1), wherein the roller (3) is sleeved outside the pin (6), and characterized in that: The two ends of the pin shaft (6) respectively penetrate the two outer link plates (2), and the two ends of the pin shaft (6) are fixedly connected to an extension rod (7), the outer wall of the extension rod (7) is provided with a plurality of lifting cavities (701), the inner walls of the plurality of lifting cavities (701) are fixedly connected to extrusion springs (9), the other ends of the plurality of extrusion springs (9) are fixedly connected to a clamping block (5), and the side of the plurality of clamping blocks (5) close to the inner link plate (1) is against the side wall of the outer link plate (2).

2. A combined metal chain according to claim 1, characterized in that: The bottom surface of the lifting cavity (701) is provided with a sliding cavity (702), and a side of the clamping block (5) close to the extrusion spring (9) is fixedly connected to a limiting rod (10), and an outer wall of the limiting rod (10) is slidably connected to an inner wall of the sliding cavity (702).

3. A combined metal chain according to claim 2, characterized in that: The side of the clamping block (5) close to the extrusion spring (9) and the end of the limiting rod (10) away from the extrusion spring (9) are both fixedly connected with an anti-slip sheet (8), and the outer walls of the two anti-slip sheets (8) are respectively slidably connected to the inner wall of the lifting cavity (701) and the inner wall of the sliding cavity (702).

4. A combined metal chain according to claim 1, 2 or 3, characterized in that: One end of the extension rod (7) away from the pin shaft (6) is fixedly connected to a ramp block (4).

5. A combined metal chain according to claim 4, characterized in that: The inclination angle of the inclined surface of the ramp block (4) is the same as the inclination angle of the inclined surface of the clamping block (5).

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