Improved double-row step chain

Abstract

The utility model relates to the technical field of chains, in particular to an improved double-row step chain. According to the technical scheme, the improved double-row step chain comprises a center-layer inner chain plate, a sleeve, a roller, an outer-layer inner chain plate, an outer-layer outer chain plate, a connecting pin shaft and a detachable pin shaft, and is characterized in that the diameter of a combined hole in the matched position of the outer-layer outer chain plate and the detachable pin shaft is larger than that of the detachable pin shaft; a combined stable matched connection sleeve is arranged at the position, between every two adjacent sleeves, of the outer-layer inner chain plate, and a detachable pin shaft locking assembly is arranged on the outer side of the detachable pin shaft. The chain has the advantages that the chain can be matched with a mechanical component on the outer side in an associated mode in the installation process, operation is more convenient in the installation and matching process, the chain can have higher bearing capacity in the using process, and the overall matching strength and durability are higher in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of chains, in particular to an improved double-row step chain. Background Art

[0002] The double-row step chain is a relatively important type of chain product. Chinese patent CN206478166U is an improved double-row step chain developed by the company. During production and use, due to the interference fit between the pin position and the chain plate, the efficiency during installation is relatively low, the flexibility during use is relatively poor, and when the chain is used as a whole, it cannot be associated with the surrounding mechanical components, and the overall strength during use is relatively low. Utility Model Content

[0003] The purpose of the utility model is to provide an improved double-row step chain, which is structurally improved on the existing double-row step chain, is provided with a detachable pin shaft, and adopts a clearance fit with the outer link plate, which is more convenient during production and processing. When in use, the outer position has greater flexibility of movement. Its main structure is provided with a combined stable fitting connecting sleeve with an opening facing outward, which can be matched with the mechanical components on the outside during installation, making the operation during installation more convenient, and can make the chain have a stronger bearing capacity during use. The overall fitting strength during use is higher and the durability is stronger.

[0004] The technical solution of the utility model is as follows:

[0005] An improved double-row step chain comprises a center layer inner chain plate, a sleeve, a roller, an outer layer inner chain plate, an outer layer outer chain plate, a connecting pin and a detachable pin, characterized in that the diameter of the combination hole of the outer layer outer chain plate and the detachable pin is larger than the diameter of the detachable pin, a combined stable matching connecting sleeve is provided at a position between two adjacent sleeves on the outer layer inner chain plate, a detachable pin locking assembly is provided on the outer side of the detachable pin, the outer end face of the combined stable matching connecting sleeve is on the same plane as the end face of the outer position of the outer layer inner chain plate, and the other side end face of the combined stable matching connecting sleeve is on the same plane as the outer end face of the center layer inner chain plate.

[0006] Furthermore, the width of the outer layer inner link plate at the position of the combined stable matching connecting sleeve is greater than the width of the outer layer outer link plate.

[0007] Furthermore, the combined stable fitting connection sleeve is located at the center between two adjacent sleeves.

[0008] Furthermore, the diameter of the combined stable fitting connection sleeve is smaller than the distance between adjacent end faces of two adjacent outer link plates.

[0009] Beneficial effects of the utility model:

[0010] The utility model makes structural improvements on the existing double-row step chain, provides a detachable pin shaft, and adopts a clearance fit between the outer link plate, which is more convenient during production and processing. When in use, the outer position has greater flexibility of movement. Its main structure is provided with a combined stable fitting connecting sleeve with an opening facing outward, which can be matched with the mechanical components on the outside during installation, making the operation during installation more convenient, and can make the chain have a stronger load-bearing capacity during use. The overall fitting strength during use is higher and the durability is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front schematic diagram of the utility model;

[0012] Figure 2 This is a bottom view schematic diagram of the present utility model;

[0013] In the figure: 1. Center layer inner link plate, 2. Sleeve, 3. Roller, 4. Removable pin, 5. Pin locking assembly, 6. Outer layer inner link plate, 7. Outer layer outer link plate, 8. Combined stable matching connecting sleeve. DETAILED DESCRIPTION

[0014] like Figure 1 and Figure 2As shown, an improved double-row step chain includes a center inner link plate 1, a sleeve 2, a roller 3, an outer inner link plate 6, an outer outer link plate 7, a connecting pin, and a detachable pin 4. The diameter of the combination hole of the outer outer link plate 7 at the position where it cooperates with the detachable pin 4 is larger than the diameter of the detachable pin 4, enabling clearance fit during assembly. A detachable pin locking assembly 5 is provided on the outside of the detachable pin 4, and this structure enables a tight fit of the detachable pin. A combined stable fitting connecting sleeve 8 is provided between two adjacent sleeves 2 on the outer inner link plate 6. When the chain is later used, it can be inserted and combined with mechanical components and can be connected together with the chain body, thereby enhancing the overall load-bearing capacity when the chain is moved. The outer end face of the combined stable fitting connecting sleeve 8 is coplanar with the end face of the outer position of the outer layer inner link plate 6, and the other end face of the combined stable fitting connecting sleeve 8 is coplanar with the outer end face of the center layer inner link plate 1, ensuring better flatness of the overall structure, more convenient assembly operation during production, and higher fitting strength. It improves on the structure of the existing double-row step chain by providing a detachable pin and adopting a clearance fit between the outer link plate, making it more convenient during production and processing. During use, the outer position has greater flexibility. Its main structure is provided with a combined stable fitting connecting sleeve with an opening facing outward, which can be used to cooperate with the outer mechanical components during installation, making the installation and fitting operation more convenient, and can provide the chain with a stronger load-bearing capacity during use. The overall fitting strength and durability during use are higher.

[0015] Preferably, the width of the outer inner link plate 6 at the position of the combined stable fitting connecting sleeve 8 is greater than the width of the outer outer link plate 7, so that the structural strength of this position is higher and the safety during fitting can be further improved.

[0016] Preferably, the combined stable fitting connection sleeve 8 is located at the center between two adjacent sleeves 2, so that the fitting bearing capacity is stronger during combined connection and the durability is more reliable during use.

[0017] Preferably, the diameter of the combined stable fitting connection sleeve 8 is smaller than the distance between the adjacent end faces of the two adjacent outer layer outer link plates 7, so that the combined space of the fitting position is larger and the chain is safer during operation in later use.

[0018] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements or replacements can be made without departing from the principles described in the present invention. These improvements or replacements should also be regarded as the scope of protection of the present invention.

Claims

1. An improved double-row step chain, comprising a center inner chain plate (1), a sleeve (2), a roller (3), an outer inner chain plate (6), an outer outer chain plate (7), a connecting pin and a detachable pin (4), characterized in that: The diameter of the combined hole at the matching position between the outer layer outer link plate (7) and the detachable pin shaft (4) is larger than the diameter of the detachable pin shaft (4); a detachable pin shaft locking assembly (5) is provided on the outer side of the detachable pin shaft (4); a combined stable matching connection sleeve (8) is provided at a position between two adjacent sleeves (2) on the outer layer inner link plate (6); the outer end face of the combined stable matching connection sleeve (8) is in the same plane as the end face at the outer position of the outer layer inner link plate (6); and the other end face of the combined stable matching connection sleeve (8) is in the same plane as the outer end face of the center layer inner link plate (1).

2. The improved double-row step chain according to claim 1, characterized in that: The width of the outer layer inner link plate (6) where the combined stable matching connection sleeve (8) is arranged is greater than the width of the outer layer outer link plate (7).

3. The improved double-row step chain according to claim 1, characterized in that: The combined stable fitting connection sleeve (8) is located at a central position between two adjacent sleeves (2).

4. The improved double-row step chain according to claim 1, characterized in that: The diameter of the combined stable fitting connection sleeve (8) is smaller than the distance between adjacent end faces of two adjacent outer layer outer link plates (7).

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