Length-adjustable mining chain

Abstract

The utility model discloses a mining chain with the adjustable length. The mining chain comprises a chain section and a protection mechanism. The chain section is formed by connecting evenly-distributed chain link mechanisms in series, each chain link mechanism comprises chain link assemblies, cross-shaped receding grooves, first fixing nuts, second fixing nuts and adjusting columns, the cross-shaped receding grooves are formed in the upper ends and the lower ends of the adjusting columns, and the chain link assemblies are inserted into the upper ends and the lower ends of every two adjacent adjusting columns; the opposite inner side ends of the two chain link assemblies are located in the vertically adjacent cross-shaped receding grooves correspondingly, the upper end and the lower end of the adjusting column are in threaded connection with first fixing nuts and second fixing nuts which are symmetrically distributed up and down correspondingly, and the first fixing nuts are located on the outer sides of the second fixing nuts correspondingly. The opposite inner side ends of the two chain link assemblies are located between the first fixing nut and the second fixing nut which are vertically adjacent. According to the length-adjustable mining chain, the length of the chain can be adjusted through the adjustable chain links, meanwhile, the chain links are convenient to disassemble, and the applicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining chains, in particular to a mining chain with adjustable length. Background Art

[0002] A conveyor that uses a scraper chain to transport bulk materials in a trough is called a scraper conveyor. In the current coal mining face, the role of the scraper conveyor is not only to transport coal and materials, but also to serve as the operating track of the coal mining machine. Therefore, it has become an indispensable main equipment in modern coal mining technology. If the scraper conveyor can maintain continuous operation, production can proceed normally.

[0003] The middle part of the scraper conveyor is composed of a transition trough, a middle trough, a chain and a scraper. The mining chain is an important component of the scraper conveyor, but the existing scraper conveyors are of different sizes and the required mining chains are of different lengths. The method of cutting the mining chain to obtain a chain of suitable length will inevitably cause unnecessary waste. For this reason, we propose a mining chain with adjustable length. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a length-adjustable mining chain, which can adjust the length of the chain through adjustable chain links, facilitate the disassembly of the chain links, improve applicability, and effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a length-adjustable mining chain, comprising a chain segment and a protective mechanism;

[0006] Chain segment: It is composed of evenly distributed chain link mechanisms connected in series, and the chain link mechanism includes a chain link assembly, a cross avoidance groove, a fixing nut 1, a fixing nut 2 and an adjusting column. The upper and lower ends of the adjusting column are provided with a cross avoidance groove, and the upper and lower ends of two adjacent adjusting columns are both plugged with chain link assemblies. The relative inner ends of the two chain link assemblies are respectively located inside the vertically adjacent cross avoidance grooves. The upper and lower ends of the adjusting column are both threadedly connected with the fixing nut 1 and the fixing nut 2 symmetrically distributed up and down, and the fixing nut 1 is respectively located on the outside of the fixing nut 2, and the relative inner ends of the two chain link assemblies are respectively located between the fixing nut 1 and the fixing nut 2 adjacent to the vertical;

[0007] Protection mechanism: It is respectively arranged outside the chain link mechanism, and the length of the chain is adjusted through the adjustable chain link. At the same time, it is easy to disassemble the chain link to improve applicability.

[0008] Furthermore, the chain link assembly includes a chain link and a cross, and the vertical sections of the chain links are all provided with crosses. The crosses are respectively slidably connected to the inside of vertically adjacent cross avoidance grooves, and the outer sides of the crosses are respectively located between vertically adjacent fixing nut one and fixing nut two, so as to fix the chain links.

[0009] Furthermore, the chain link assembly also includes a latch pin, and the vertical sections of the chain links are all provided with latch pin holes. The latch pins respectively pass through the through holes in the middle of adjacent crosses and are inserted into the inside of the latch pin holes, thereby improving the shear strength of the cross.

[0010] Furthermore, the chain link assembly also includes a limiting groove, and the vertical sections of the chain links are all provided with limiting grooves, and a cross is welded inside the limiting grooves to facilitate alignment of the cross and the cross avoidance groove.

[0011] Furthermore, the protective mechanism includes a front protective cover and a rear protective cover, the front protective cover is buckled on the front side of the outside of the whole composed of two chain links and two adjusting columns, and the rear protective cover is buckled on the rear side of the outside of the whole composed of two chain links and two adjusting columns, the front protective cover and the rear protective cover are connected by bolts, and fixing nut 1, fixing nut 2 and the adjusting column are all located inside the whole composed of the front protective cover and the rear protective cover to reduce corrosion.

[0012] Furthermore, the protective mechanism also includes a semi-cylinder, and the upper and lower ends of the front protective cover and the rear protective cover are provided with semi-cylinders symmetrically distributed on the left and right. The vertical sections of the chain links respectively pass through the interior of the cylinder composed of the semi-cylinders of the adjacent front protective cover and the semi-cylinders of the rear protective cover, thereby improving the bending strength of the vertical sections of the chain links.

[0013] Furthermore, the outer sides of the fixing nut 1 and the fixing nut 2 are both provided with knurling to increase the friction of the nuts and facilitate tightening the nuts.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the length-adjustable mining chain has the following advantages:

[0015] Insert the two chain links into the upper and lower ends of the two adjusting columns respectively, and the crosses are slidably connected to the inside of the vertically adjacent cross avoidance grooves respectively, and then rotate the fixing nut one and the fixing nut two, and the outer sides of the cross are respectively located between the vertically adjacent fixing nut one and the fixing nut two, so as to fix the cross, and the cross is fixed at different positions inside the vertically adjacent cross avoidance grooves by adjusting the positions of the fixing nut one and the fixing nut two, so as to adjust the relative distance between the two chain links and realize the adjustment of the total length of the chain link mechanism. When the chain link mechanism is connected in series, the chain link is first passed through the inner arc of the chain link of another group of chain link mechanisms for assembly, and then the front protective cover and the rear protective cover are installed. The length of the mining chain can be adjusted by the chain link of adjustable length. At the same time, the front protective cover and the rear protective cover are removed, and the fixing nut two is unscrewed to remove the chain link. The length adjustment of the chain is realized by the adjustable chain link, and it is convenient to disassemble the chain link, thereby improving applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the chain link mechanism structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the chain link mechanism of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the chain link assembly of the utility model.

[0020] In the figure: 1 chain segment, 2 chain link mechanism, 21 chain link assembly, 211 chain link, 212 limit groove, 213 latch, 214 cross, 22 cross avoidance groove, 23 fixing nut 1, 24 fixing nut 2, 25 adjustment column, 3 knurling, 4 protection mechanism, 41 front protection cover, 42 rear protection cover, 43 semi-cylinder. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , This embodiment provides a technical solution: a length-adjustable mining chain, comprising a chain segment 1 and a protective mechanism 4;

[0023] Chain segment 1: It is composed of evenly distributed chain link mechanisms 2 connected in series, the chain link mechanism 2 includes a chain link assembly 21, a cross avoidance groove 22, a fixing nut 1 23, a fixing nut 24 and an adjusting column 25. The upper and lower ends of the adjusting column 25 are provided with a cross avoidance groove 22, and the upper and lower ends of two adjacent adjusting columns 25 are both plugged with chain link assemblies 21. The relative inner ends of the two chain link assemblies 21 are respectively located in the vertically adjacent cross avoidance groove 22. The upper and lower ends of the adjusting column 25 are both threadedly connected with the fixing nut 1 23 and the fixing nut 2 24 symmetrically distributed above and below. The fixing nut 1 23 is respectively located on the outside of the fixing nut 24, and the relative inner ends of the two chain link assemblies 21 are respectively located in the vertically adjacent fixing nut 24. Between the fixed nut 1 23 and the fixed nut 24, the chain link assembly 21 includes a chain link 211 and a cross 214, the vertical sections of the chain link 211 are all provided with a cross 214, the cross 214 is respectively slidably connected to the inside of the vertically adjacent cross avoidance groove 22, and the outer side of the cross 214 is respectively located between the vertically adjacent fixed nut 1 23 and the fixed nut 24, the chain link assembly 21 also includes a latch 213, the vertical sections of the chain link 211 are all provided with a latch hole, the latch 213 respectively passes through the through holes in the middle of the adjacent cross 214 and is plugged into the inside of the latch hole, the chain link assembly 21 also includes a limiting groove 212, the vertical sections of the chain link 211 are all provided with a limiting groove 212, and the inside of the limiting groove 212 is welded A cross 214 is connected, and the outer sides of the fixing nut 1 23 and the fixing nut 2 24 are both provided with knurling 3. When processing the chain link 211, a limiting groove 212 and a latch hole are first opened in the vertical section of the chain link 211 by a cutting device and a drilling device, and two fixing nuts 1 23 are first sleeved on the outside of the chain link 211, and then the cross 214 is placed inside the limiting groove 212, and then the latch 213 is inserted, and the limiting groove 212, the cross 214 and the latch 213 are welded together. The limiting groove 212 facilitates the alignment of the cross 214 with the cross avoidance groove 22, and the latch 213 improves the shear strength of the cross 214 to prevent the cross 214 from falling off. After the processing is completed, the two chain links 211 are respectively plugged into the two adjustment At the upper and lower ends of the section column 25, the cross 214 is slidably connected to the inside of the vertically adjacent cross avoidance groove 22, and then the fixing nut 1 23 and the fixing nut 24 are rotated, and the outer side of the cross 214 is respectively located between the vertically adjacent fixing nut 1 23 and the fixing nut 24, so as to fix the cross 214. By adjusting the positions of the fixing nut 1 23 and the fixing nut 24, the cross 214 is fixed at different positions inside the vertically adjacent cross avoidance groove 22, thereby adjusting the relative distance between the two chain links 211, and realizing the adjustment of the total length of the chain link mechanism 2. When the chain link mechanism 2 is connected in series, the chain link 211 is first passed through the inner arc of the chain link 211 of another group of chain link mechanisms 2 before assembly;

[0024] Protection mechanism 4: It is respectively arranged on the outside of the chain link mechanism 2, and the protection mechanism 4 includes a front protection cover 41 and a rear protection cover 42. The front side of the outside of the whole composed of two chain links 211 and two adjusting columns 25 is buckled with the front protection cover 41, and the rear side of the outside of the whole composed of two chain links 211 and two adjusting columns 25 is buckled with the rear protection cover 42. The front protection cover 41 and the rear protection cover 42 at the rear side are connected by bolts. The fixing nut 1 23, the fixing nut 24 and the adjusting column 25 are all located inside the whole composed of the front protection cover 41 and the rear protection cover 42 at the rear side. The protection mechanism 4 also includes a semi-cylinder 43. The upper and lower ends of the front protection cover 41 and the rear protection cover 42 are provided with semi-cylinders 43 symmetrically distributed on the left and right. The vertical sections of the chain links 211 pass through the semi-cylinders of adjacent front protection covers 41 respectively. The fixing nut 1 23, the fixing nut 24 and the adjusting column 25 are all located inside the integral body formed by the front protective cover 41 and the rear protective cover 42 on the rear side, thereby reducing the pollution of the external fixing nut 1 23, the fixing nut 24 and the adjusting column 25 and slowing down the corrosion. Meanwhile, the spacing between the inner walls of the upper and lower sides of the front protective cover 41 and the inner walls of the upper and lower sides of the rear protective cover 42 is equal to the length of the adjusting column 25, thereby avoiding the shaking of the integral body formed by the front protective cover 41 and the rear protective cover 42 and improving the tensile strength of the chain link mechanism 2. The vertical sections of the chain link 211 respectively pass through the interior of the cylinder formed by the semi-cylinder 43 of the adjacent front protective cover 41 and the semi-cylinder 43 of the rear protective cover 42, thereby further improving the bending strength of the chain link 211.

[0025] The working principle of the length-adjustable mining chain provided by the utility model is as follows: when processing the chain link 211, a limiting groove 212 and a pin hole are firstly opened in the vertical section of the chain link 211 by a cutting device and a drilling device, two fixing nuts 23 are firstly sleeved on the outside of the chain link 211, and then a cross 214 is placed inside the limiting groove 212, and then the pin 213 is inserted, and the limiting groove 212, the cross 214 and the pin 213 are welded together, and the limiting groove 212 facilitates the cross 214 to be aligned with the cross avoidance groove 22, and the pin 213 is welded together. 13 improves the shear strength of the cross 214 and prevents the cross 214 from falling off. After the processing is completed, the two chain links 211 are respectively inserted into the upper and lower ends of the two adjustment columns 25, and the cross 214 is respectively slidably connected to the inside of the vertically adjacent cross avoidance groove 22, and then the fixing nut 1 23 and the fixing nut 24 are rotated, and the outer side of the cross 214 is respectively located between the vertically adjacent fixing nut 1 23 and the fixing nut 24, so as to fix the cross 214. By adjusting the position of the fixing nut 1 23 and the fixing nut 24 The cross 214 is fixed at different positions inside the vertically adjacent cross avoidance groove 22, so as to adjust the relative distance between the two chain links 211 and adjust the total length of the chain link mechanism 2. When the chain link mechanism 2 is connected in series, the chain link 211 is first passed through the inner arc of the chain link 211 of another group of chain link mechanisms 2 for assembly, and then the front protective cover 41 and the rear protective cover 42 are installed. The fixing nut 1 23, the fixing nut 24 and the adjustment column 25 are all located inside the whole composed of the front protective cover 41 and the rear protective cover 42 at the rear side, reducing the external fixing The contamination of nut 1 23, fixing nut 24 and adjusting column 25 is reduced, and corrosion is slowed down. At the same time, the spacing between the upper and lower inner walls of the front protective cover 41 and the upper and lower inner walls of the rear protective cover 42 is equal to the length of the adjusting column 25, which avoids the shaking of the whole composed of the front protective cover 41 and the rear protective cover 42, and at the same time improves the tensile strength of the chain link mechanism 2. The vertical sections of the chain link 211 respectively pass through the interior of the cylinder composed of the semi-cylinder 43 of the adjacent front protective cover 41 and the semi-cylinder 43 of the rear protective cover 42, so as to further improve the bending strength of the chain link 211.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A length-adjustable mining chain, characterized in that: It comprises a chain segment (1) and a protection mechanism (4); The chain segment (1) is composed of evenly distributed chain link mechanisms (2) connected in series. The chain link mechanism (2) comprises a chain link assembly (21), a cross avoidance groove (22), a fixing nut 1 (23), a fixing nut 2 (24) and an adjusting column (25). The upper and lower ends of the adjusting column (25) are both provided with a cross avoidance groove (22). The upper and lower ends of two adjacent adjusting columns (25) are both plugged with a chain link assembly (21). The relative inner ends of the two chain link assemblies (21) are respectively located inside the vertically adjacent cross avoidance groove (22). The upper and lower ends of the adjusting column (25) are both threadedly connected to the fixing nut 1 (23) and the fixing nut 2 (24) which are symmetrically distributed above and below. The fixing nut 1 (23) is respectively located outside the fixing nut 2 (24). The relative inner ends of the two chain link assemblies (21) are respectively located between the fixing nut 1 (23) and the fixing nut 2 (24) which are vertically adjacent. Protection mechanisms (4): they are respectively arranged outside the chain link mechanisms (2).

2. The length-adjustable mining chain according to claim 1, characterized in that: The chain link assembly (21) comprises a chain link (211) and a cross (214), wherein the vertical sections of the chain links (211) are all provided with crosses (214), the crosses (214) are respectively slidably connected to the inside of vertically adjacent cross avoidance grooves (22), and the outer sides of the crosses (214) are respectively located between vertically adjacent fixing nuts 1 (23) and fixing nuts 2 (24).

3. The length-adjustable mining chain according to claim 2, characterized in that: The chain link assembly (21) further comprises a latch pin (213). The vertical sections of the chain links (211) are each provided with a latch pin hole. The latch pins (213) respectively pass through the through holes in the middle of adjacent crosses (214) and are inserted into the inside of the latch pin holes.

4. The length-adjustable mining chain according to claim 2, characterized in that: The chain link assembly (21) further comprises a limiting groove (212), the vertical sections of the chain links (211) are all provided with limiting grooves (212), and the interiors of the limiting grooves (212) are all welded with crosses (214).

5. The length-adjustable mining chain according to claim 2, characterized in that: The protective mechanism (4) comprises a front protective cover (41) and a rear protective cover (42); the front protective cover (41) is buckled on the front side of the exterior of a whole composed of two chain links (211) and two adjustment columns (25); the rear protective cover (42) is buckled on the rear side of the exterior of a whole composed of two chain links (211) and two adjustment columns (25); the front protective cover (41) and the rear protective cover (42) are connected by bolts; fixing nut 1 (23), fixing nut 2 (24) and the adjustment column (25) are all located inside the whole composed of the front protective cover (41) and the rear protective cover (42) at the rear side.

6. The length-adjustable mining chain according to claim 5, characterized in that: The protection mechanism (4) further comprises a semi-cylinder (43), wherein the upper and lower ends of the front protection cover (41) and the rear protection cover (42) are both provided with semi-cylinders (43) symmetrically distributed on the left and right sides, and the vertical sections of the chain links (211) respectively pass through the interior of the cylinder formed by the semi-cylinders (43) of the adjacent front protection cover (41) and the semi-cylinders (43) of the rear protection cover (42).

7. The length-adjustable mining chain according to claim 1, characterized in that: The outer side surfaces of the fixing nut 1 (23) and the fixing nut 2 (24) are both provided with knurling (3).

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