Variable-pitch check block reinforced chain

Abstract

The utility model relates to a variable pitch check block reinforced chain which comprises a plurality of connecting plates and a plurality of chain rings which are connected in a staggered mode, two connecting holes are formed in each connecting plate, two adjacent chain rings of each connecting plate penetrate through the two connecting holes respectively, the two sides of each connecting plate are planes, the two ends of each connecting plate in the length direction are convex arc-shaped faces protruding outwards, and the two ends of each connecting plate in the length direction are arc-shaped faces protruding outwards. The two ends, in the width direction, of each connecting plate are concave arc-shaped faces which are concave inwards, the arc end portions of the concave arc-shaped faces are connected with the arc end portions of the convex arc-shaped faces, every two adjacent chain rings are connected through the connecting plates, the two connecting holes in the connecting plates can achieve separation between the two chain rings, the two chain rings are prevented from being staggered, and the service life of the chain rings is prolonged. The connecting plates can be formed through forging or casting, machining is convenient, connection between the adjacent connecting plates is achieved through the chain rings, connection of the whole chain is achieved, the concave arc-shaped faces of the connecting plates are attached to the outer circumferential faces of chain wheels of the scraper conveyor, the contact area is increased, abrasion is reduced, and the service life of the whole chain is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of chains, in particular to a variable pitch block reinforced chain. Background Art

[0002] The chain is composed of multiple metal links. The link includes two straight parts and two arc-shaped parts connecting the two straight parts. The surface on the same side of the two straight parts on the same link is the side surface, and the surface on the same link where the two straight parts are away from each other is the end surface. In the chain transmission system of the scraper conveyor, the link is divided into flat link and vertical link according to the state when in use. The side of the flat link fits with the sprocket, and the end face of the vertical link fits with the sprocket. The flat link and the vertical link are staggered and connected in sequence. In the process of the sprocket driving the chain transmission, the arc-shaped parts of the two flat links are located in the vertical link. If the chain is loose to a certain extent, it may cause the two flat links to be misaligned in the vertical link, affecting the transmission of the entire chain. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and provides a variable pitch block reinforcement chain.

[0004] The utility model is realized through the following technical scheme, and provides a variable pitch block reinforcement chain, comprising a plurality of staggered connecting plates and a plurality of chain links, wherein the connecting plates are provided with two connecting holes arranged along the length direction, the connecting holes are circular holes, and two adjacent chain links of the connecting plates respectively pass through the two connecting holes, the two sides of the connecting plates are planes, the two ends of the connecting plates in the length direction are convex arc surfaces protruding outward, and the two ends of the connecting plates in the width direction are concave arc surfaces recessed inward, and the arc ends of the concave arc surfaces are connected to the arc ends of the convex arc surfaces.

[0005] In this solution, two adjacent chain links are connected by a connecting plate. The two connecting holes on the connecting plate can separate the two chain links to prevent the two chain links from being misaligned. The connecting plate can be formed by forging or casting, and is easy to process. The connection between adjacent connecting plates is achieved through the chain ring to achieve the connection of the entire chain. The concave arc surface of the connecting plate fits with the outer circumferential surface of the sprocket of the scraper conveyor, which increases the contact area, reduces wear, and increases the service life of the entire chain.

[0006] As an optimization, the convex arc surface is concentric with the connecting hole, so that the tension of the chain ring received by the connecting hole can be evenly transmitted to the end position of the connecting plate, making the stress uniform.

[0007] As an optimization, both sides of the connection plate are provided with a forging groove located between the two connection holes. Through the forging groove, the plate is pressed toward the connection hole and the concave arc surface, thereby improving the strength and wear resistance of these two positions.

[0008] As an optimization, one end of the forging groove close to the concave arc surface is parallel to the concave arc surface, and one end of the forging groove close to the connecting hole is parallel to the connecting hole, thereby improving the strength of the concave arc surface and the connecting hole.

[0009] As an optimization, the hole wall of the connecting hole is an arc-shaped surface convex toward the hole center along the depth direction and has a radius of R, and the inner hole radius of the chain ring is r, where R=r. This increases the contact area between the inner hole of the chain ring and the connecting hole, and improves the wear resistance.

[0010] As an optimization, the chain link comprises a chain link straight portion and a chain link arc portion, and the cross-sections of the chain link straight portion and the chain link arc portion are both circular, so that the chain link is formed by bending a round rod.

[0011] As an optimization, the length of the connecting plate is greater than the length of the chain ring, thereby increasing the contact length between the connecting plate and the sprocket and improving the service life of the entire chain.

[0012] The beneficial effects of the utility model are as follows: the utility model is a variable pitch block reinforced chain, which connects two adjacent chain links through a connecting plate, and the two connecting holes on the connecting plate can realize the separation between the two chain links to prevent the two chain links from being misaligned. The connecting plate can be formed by forging or casting, and is easy to process. The connection between adjacent connecting plates is realized through the chain link to realize the connection of the entire chain. The concave arc surface of the connecting plate fits with the outer circumferential surface of the sprocket of the scraper conveyor, which increases the contact area, reduces wear, and increases the service life of the entire chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the front view of the utility model;

[0014] Figure 2 It is a front view of the connecting plate of the utility model;

[0015] Figure 3 For this utility model Figure 1 Sectional view of the middle AA plane;

[0016] Figure 4 For this utility model Figure 1 Middle BB plane section view;

[0017] Figure 5 It is a front view of the chain ring of the utility model;

[0018] As shown in the figure:

[0019] 1. Connecting plate, 2. Chain ring, 21. Chain ring straight portion, 22. Chain ring arc portion, 3. Connecting hole, 4. Forging groove. DETAILED DESCRIPTION

[0020] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0021] like Figures 1 to 5 As shown, a variable pitch block reinforced chain of the utility model comprises a plurality of connecting plates 1 and a plurality of chain links 2 which are staggered and connected. The chain links 2 adopt the circular link chain links commonly used in the prior art. The chain links 2 comprise a chain link straight portion 21 and a chain link arc portion 22. The cross sections of the chain link straight portion 21 and the chain link arc portion 22 are both circular. During processing, the entire chain link is bent from a round steel and welded at the butt joint after bending.

[0022] The connecting plate 1 is a long metal plate with two connecting holes 3 arranged along the length direction. The connecting holes 3 are circular holes. Two adjacent chain links of the connecting plate 1 pass through the two connecting holes 3 respectively. The diameter of the connecting hole 3 is larger than the diameter of the chain link.

[0023] The two sides of the connecting plate 1 are flat, and the thickness of the connecting plate 1 is 0.7-1.1 times the diameter of the chain ring. Figure 1 , 2 As shown, both ends of the connecting plate 1 in the length direction are convex arc surfaces protruding outward, and the convex arc surfaces are concentric with the connecting hole 3.

[0024] Both ends of the connecting plate 1 in the width direction are inwardly recessed concave arc surfaces, the arc ends of the concave arc surfaces are connected to the arc ends of the convex arc surfaces, and the outer ring profile of the connecting plate 1 is the same in each thickness section.

[0025] Both sides of the connection plate 1 are provided with a forging groove 4 between the two connection holes 3. The forging groove 4 is a sink groove with a flat bottom, and the depth of the forging groove 4 is 0.1-0.3 times the thickness of the connection plate.

[0026] One end of the forging groove 4 close to the concave arc surface is parallel to the concave arc surface, and one end of the forging groove 4 close to the connecting hole 3 is parallel to the connecting hole 3. Since the forging groove is forged on the planes on both sides, the plate is squeezed toward the connecting hole and the concave arc surface, thereby improving the strength and wear resistance of these two positions.

[0027] like Figure 4 , 5 As shown, the hole wall of the connecting hole 3 is an arc-shaped surface convex toward the hole center along the depth direction and has a radius of R, and the inner hole radius of the chain ring 2 is r, and R=r. Thus, the contact area between the inner hole of the chain ring and the connecting hole is increased, and the wear resistance is improved.

[0028] The length of the connecting plate 1 is greater than the length of the chain ring 2. Thus, the contact length between the connecting plate and the sprocket is increased, and the service life of the entire chain is increased.

[0029] During processing, the required number of connecting plates 1 are processed first. The connecting plates can be formed by casting or forging, and then the round steel is heated and bent to form a chain link. When the chain link is bent, it passes through two adjacent connecting plates to achieve the connection of the two connecting plates. After bending and forming, the butt surfaces of the chain links are welded and deburred, thereby realizing the processing and forming of the entire chain.

[0030] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A variable pitch block reinforced chain, characterized in that: The invention comprises a plurality of connecting plates (1) and a plurality of chain links (2) which are connected in an interlaced manner, wherein the connecting plate (1) is provided with two connecting holes (3) arranged along the length direction, wherein the connecting holes (3) are circular holes, and two adjacent chain links of the connecting plate (1) respectively pass through the two connecting holes (3), and the two sides of the connecting plate (1) are planes, wherein the two ends of the connecting plate (1) in the length direction are convex arc-shaped surfaces protruding outwards, and the two ends of the connecting plate (1) in the width direction are concave arc-shaped surfaces recessed inwards, and the arc ends of the concave arc-shaped surfaces are connected to the arc ends of the convex arc-shaped surfaces.

2. A variable pitch block reinforced chain according to claim 1, characterized in that: The convex arc surface is concentric with the connecting hole (3).

3. A variable pitch block reinforced chain according to claim 1, characterized in that: Both sides of the connection plate (1) are provided with a forging groove (4) located between the two connection holes (3).

4. A variable pitch block reinforced chain according to claim 3, characterized in that: One end of the forging groove (4) close to the concave arc surface is parallel to the concave arc surface, and one end of the forging groove (4) close to the connecting hole (3) is parallel to the connecting hole (3).

5. The variable pitch block reinforced chain according to claim 1, characterized in that: The hole wall of the connecting hole (3) is an arc-shaped surface convex toward the hole center along the depth direction and has a radius R. The inner hole radius of the chain ring (2) is r, and R=r.

6. The variable pitch block reinforced chain according to claim 1, characterized in that: The chain link (2) comprises a chain link straight portion (21) and a chain link arc portion (22), and the cross-sections of the chain link straight portion (21) and the chain link arc portion (22) are both circular.

7. The variable pitch block reinforced chain according to claim 1, characterized in that: The length of the connecting plate (1) is greater than the length of the chain link (2).

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