Chain link structure of composite chain joint and chain pin

Abstract

The utility model discloses a composite chain joint and chain pin chain link structure, its structure includes: chain joint, chain link slot, chain link rail surface, the chain pin, the chain link rail surface is installed in the chain link slot and is located on the same vertical plane, the chain joint and the chain link slot are buckled together, the chain pin and the chain joint are inserted and embedded together, and the axle center is collinear, the chain pin and the chain joint are in the same vertical plane, the chain joint and the chain link slot are in the same vertical plane, and the chain joint and the chain pin are in the same vertical plane. The chain links are provided with chain link grooves, the chain pins and the chain channels are arranged at the left end and the right end of the chain link grooves respectively, and the chain pins and the chain channels are arranged at the left end and the right end of the chain link grooves respectively. The inside of the chain link groove and the inside of the chain link rail surface are both coated with lubricating oil and provided with polyurethane dustproof rings, the service life is further prolonged, all chains are formed by assembling high-precision designed and manufactured parts, and the overall hardening and tempering hardness is improved.

Description

Technical Field

[0001] The utility model relates to a chain link structure of a composite chain link and a chain pin, belonging to the field of chain link assemblies. Background Art

[0002] With the development of social economy and the great investment in infrastructure construction, excavators have been used more and more widely. Among them, the chain of the excavator, as one of the important components of the excavator, mainly drives the excavator forward or backward. The shortcomings of the current technology to be optimized are:

[0003] The connecting parts assembly of the chain links needs to have chain links and chain pins, and the rigidity of the chain links and chain pins directly determines whether the chain links are easy to come off after assembly. In conventional structures, if one of the chain links or chain pins is rigidly cracked, the chain links will fall off one by one, affecting the overall working efficiency of the engineering machinery. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a chain link structure with a composite chain link and chain pin to solve the problem that the chain link connecting part assembly needs to have a chain link and a chain pin, and the rigidity of the chain link and the chain pin directly determines whether the chain link is easy to fall off after assembly. In the conventional structure, one of the chain link and the chain pin is rigidly cracked, which causes the chain links to fall off one by one, affecting the overall working efficiency of the engineering machinery.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a chain link structure of a composite chain link and chain pin, the structure of which includes: a chain link, a chain link groove, a chain link rail surface, and a chain pin, the chain link rail surface is installed inside the chain link groove and is on the same vertical plane, the chain link is buckled with the chain link groove, the chain pin and the chain link are inserted together and the axes are colinear, the chain pin and the chain link are each provided with more than two and are respectively installed at the left and right ends of the chain link groove, the chain link rail surface is provided with an upper rail surface block, a middle frame member, and a lower rail surface block, the upper rail surface block and the lower rail surface block are respectively installed on the upper and lower sides of the middle frame member and are on the same vertical plane, the upper rail surface block is welded to the top end of the middle frame member, the lower rail surface block is welded to the bottom end of the middle frame member, and the middle frame member is installed inside the chain link groove and is on the same vertical plane.

[0006] To optimize the above technical solution, further measures are taken:

[0007] As a further improvement of the present invention, the chain pin is composed of an inner pin rod and a pin sleeve. The inner pin rod is installed inside the pin sleeve. The inner pin rod and the pin sleeve adopt an interference fit and their axes are colinear.

[0008] As a further improvement of the utility model, the upper rail surface block and the lower rail surface block are heat-treated chain link rail surfaces to achieve overall hardness tempering, with a combined processing and molding operation of a quenching process and a heating process.

[0009] As a further improvement of the present invention, the middle frame is a concave arc-shaped corridor with a reinforcing rib frame structure, which is wide at the top and bottom and narrow in the middle, so as to facilitate the upper and lower central reception of the chain link groove and stabilize the chain belt composition operation effect of the forming frame to protect the chain link assembly.

[0010] Beneficial Effects

[0011] The utility model discloses a chain link structure of a composite chain link and chain pin. A worker assembles the chain link to press the chain link groove to drive the chain link rail surface to form a chain ring to assemble into a chain belt, and then inserts the chain link through the inner pin rod and the pin sleeve of the chain pin to form an interlocking operation effect, so that the hardness and rigidity of the chain link groove are improved during the docking process of the upper rail surface block and the lower rail surface block supported by the middle frame.

[0012] The advantages that can be achieved after the operation of the utility model are:

[0013] The chain link groove and chain link rail surface are matched and made of special steel. The chain pins and chain links are specially heat-treated to maximize the wear resistance. The chain link groove and chain link rail surface are coated with lubricating oil and equipped with polyurethane dust rings to further extend the service life. All chains are assembled from high-precision designed and high-precision manufactured parts, and the overall hardness is tempered. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following will be described in detail with reference to the drawings in the description of the embodiment, so that other features, purposes and advantages of the utility model will become more obvious:

[0015] Figure 1 The utility model is a three-dimensional structural schematic diagram of a chain link structure of a composite chain link and chain pin.

[0016] Figure 2 It is a detailed three-dimensional structural diagram of the chain of the utility model.

[0017] Figure 3 It is a schematic diagram of the detailed cross-sectional structure of the chain link rail surface of the utility model.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the chain pin of the utility model in working state.

[0019] Explanation of the reference numerals: chain link 1, chain link groove 2, chain link rail surface 3, chain pin 4, upper rail surface block 31, middle frame member 32, lower rail surface block 33, inner pin rod 41, pin sleeve 42. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] Embodiment 1:

[0022] See also Figure 1-Figure 4 The utility model provides a chain link structure of a composite chain link and chain pin, the structure of which includes: a chain link 1, a chain link groove 2, a chain link rail surface 3, and a chain pin 4. The chain link rail surface 3 is installed inside the chain link groove 2 and is on the same vertical plane. The chain link 1 is buckled with the chain link groove 2. The chain pin 4 is inserted and embedded with the chain link 1 and the axis is in line. The chain pin 4 and the chain link 1 are both provided with more than two and are respectively installed at the left and right ends of the chain link groove 2. The chain link rail surface 3 is provided with an upper rail surface block 31, a middle frame member 32, and a lower rail surface block 33. The upper rail surface block 31 and the lower rail surface block 33 are respectively installed on the middle frame member 32. The upper and lower sides of the middle frame 32 are welded together, and the lower rail surface block 33 is welded together with the bottom end of the middle frame 32. The middle frame 32 is installed inside the chain link groove 2 and is on the same vertical plane. The upper rail surface block 31 and the lower rail surface block 33 are the overall tempering hardness of the chain link rail surface heat treatment, and the processing and molding operation is combined with the quenching process and the heating process. The middle frame 32 is a concave arc-shaped corridor with a middle reinforcement rib frame structure, which is convenient for the upper and lower centering of the chain link groove 2, and stabilizes the chain belt composition operation effect of the forming frame protecting the chain link overall assembly.

[0023] See also Figure 4 The chain pin 4 is composed of an inner pin rod 41 and a pin sleeve 42. The inner pin rod 41 is installed inside the pin sleeve 42. The inner pin rod 41 and the pin sleeve 42 are interference fit and have coaxial centers.

[0024] Workflow: The staff assembles the chain link 1 and presses the chain link groove 2 to drive the chain link rail surface 3 to form the operation effect of assembling the chain link into a chain belt, and then inserts the inner pin rod 41 of the chain pin 4 and the pin sleeve 42 into the chain link 1 to form an interlocking operation effect, so that the upper rail surface block 31 and the lower rail surface block 33 can be supported and connected with the middle frame part 32 during the docking process, thereby improving the hardness and rigidity strength of the chain link groove 2.

[0025] The utility model achieves the coordination of the chain link groove 2 and the chain link rail surface 3 by combining the above-mentioned components. The chain link groove 2 and the chain link rail surface 3 are made of special steel, and the chain pin 4 and the chain link 1 are specially heat-treated to maximize the wear resistance. The chain link groove 2 and the chain link rail surface 3 are coated with lubricating oil and equipped with a polyurethane dust ring, which further extends the service life. All chains are assembled from high-precision designed and high-precision manufactured parts, and the overall hardness is tempered to solve the problem that the chain link connecting part assembly needs to have a chain link and a chain pin, and the rigidity of the chain link and the chain pin directly determines whether the chain link is easy to fall off after assembly. In the conventional structure, one of the chain link and the chain pin is rigidly cracked, which causes the chain links to fall off one by one, affecting the overall working and movement efficiency of the engineering machinery.

[0026] The specific embodiments described herein are merely examples of the present invention. A person skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the scope of the present invention or exceed the scope defined in the appended claims.

Claims

1. A chain link structure of a composite chain link and a chain pin, the structure comprising: The chain link (1), the chain link groove (2), the chain link rail surface (3), and the chain pin (4) are characterized by: The chain link rail surface (3) is installed inside the chain link groove (2), the chain link (1) is buckled with the chain link groove (2), the chain pin (4) is inserted into the chain link (1), and the chain pin (4) and the chain link (1) are both provided with more than two and are respectively installed at the left and right ends of the chain link groove (2); The chain link rail surface (3) is provided with an upper rail surface block (31), a middle frame member (32), and a lower rail surface block (33); The upper rail surface block (31) and the lower rail surface block (33) are respectively installed on the upper and lower sides of the middle frame (32); the upper rail surface block (31) and the top end of the middle frame (32) are welded together; the lower rail surface block (33) and the bottom end of the middle frame (32) are welded together; and the middle frame (32) is installed inside the chain link groove (2).

2. A chain link structure of a composite chain link and chain pin according to claim 1, characterized in that: The chain pin (4) is composed of an inner pin rod (41) and a pin sleeve (42). The inner pin rod (41) is installed inside the pin sleeve (42), and the inner pin rod (41) and the pin sleeve (42) are matched.

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