A convenient and detachable durable industrial conveyor chain

Abstract

The present invention relates to the technical field of industrial conveyor chains, and relates to a convenient and detachable durable industrial conveyor chain, comprising a plurality of chain links connected in sequence, wherein the chain links comprise a chain plate group, a sleeve, a roller, and a pin shaft, and the chain plate group comprises two inner chain plates and two outer chain plates; sleeve clamping holes are provided at both ends of the inner chain plates, and inner chain plate clamping sleeves with notches are embedded in the sleeve clamping holes; pin shaft clamping holes are provided at both ends of the outer chain plates, and outer chain plate clamping sleeves with notches are embedded in the pin shaft clamping holes. The present invention has the following effects: since the inner and outer chain plates are less damaged, after the accessories are installed, each component maintains an interference fit, and the whole chain does not need to be replaced, the procurement cost is reduced, and the maintenance cost can also be reduced, the chain can be repaired faster and more simply, saving time cost, and due to the sealing design of the chain, good wear resistance can be guaranteed, so that the chain elongation speed is much slower than similar products under non-natural wear, and the service life of the chain is extended, so as to achieve a more durable use purpose.

Description

Technical Field

[0001] The invention relates to the technical field of industrial conveyor chains, and in particular to a conveniently disassembled durable industrial conveyor chain. Background Art

[0002] Conveyor chain is a widely used transportation component, especially in mining machinery, steel rolling machinery, cement transportation, sugar rolling, palm oil production, papermaking industry, logging industry and other fields. Especially in the field of metallurgical transportation, conveyor chain can be used to transport metallurgical products. Compared with roller transportation, conveyor chain itself has the characteristics of simple structure, light weight and low maintenance cost.

[0003] The Chinese utility model patent with authorization announcement number CN203283756U discloses a die-forged heavy-load bent plate chain, which is composed of chain links connected in sequence. Each chain link is composed of an internal and external integrated die-forged heavy-load bent plate, a pin shaft, a sleeve and a roller. The die-forged heavy-load bent plate includes an outer bent plate with a small circular hole and an inner bent plate with a large circular hole. The outer bent plate with a small circular hole and the sleeve are mounted on the pin shaft, and the inner bent plate with a large circular hole and the roller are mounted on the sleeve. The end of the pin shaft is fixed with a T-pin.

[0004] The above-mentioned existing technical solutions have the following defects: when the chain is used under long-term load conditions, it will cause the chain to be elongated (caused by wear between the sleeve and the pin), and the matching effect with the sprocket will deteriorate, causing it to fail to work normally, and it needs to be replaced and maintained. However, since the chain links are originally interference fit, and when the chain links are removed and new parts are installed, fatigue loosening will occur between the parts. At this time, the fatigue strength and tension of the chain decrease, increasing the probability of accidents. In order to reduce the occurrence of accidents, the entire chain often needs to be replaced, which greatly increases the maintenance and procurement costs. Summary of the invention

[0005] The purpose of the present invention is to provide a durable industrial conveyor chain that is easy to disassemble. By arranging inner chain plate sleeves and outer chain plate sleeves, the components can still maintain an interference fit after maintenance, without the need to replace the entire chain, thereby reducing maintenance and procurement costs.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a convenient and detachable durable industrial conveyor chain, comprising a plurality of chain links connected in sequence, wherein the chain links include a chain plate group, a sleeve arranged between the chain plate groups, a roller sleeved on the sleeve, and a pin shaft passing through the chain plate group and the sleeve, wherein the chain plate group includes two inner chain plates arranged at intervals and two outer chain plates located on the outside of the inner chain plates and arranged at intervals; sleeve clamping holes are provided at both ends of the inner chain plates, and an inner chain plate clamping sleeve with a notch and for one end of the sleeve to be embedded in the sleeve clamping holes; pin shaft clamping holes are provided at both ends of the outer chain plates, and an outer chain plate clamping sleeve with a notch and for one end of the pin shaft to be embedded in the pin shaft clamping holes.

[0007] By adopting the above technical solution, during installation, both ends of the sleeve are embedded in the inner chain piece sleeve, which is expanded outward and pressed against the inner wall of the sleeve clamping hole. Then, when the pin shaft is embedded, it will press against the outer chain piece sleeve, so that it is expanded outward and pressed against the inner wall of the pin shaft clamping hole. When the chain link needs to be disassembled, the operator first knocks on the pin shaft to disengage the outer chain piece. At this time, the outer chain piece sleeve is not pressed by the pin shaft and will be separated from the pin shaft clamping hole. Then, the sleeve is knocked to disengage the inner chain piece. The inner chain piece sleeve is not pressed by the sleeve and will be separated from the sleeve clamping hole. During the disassembly process, most of the impact force and friction force will act on each ferrule, and the inner and outer chain plate hole surfaces will be less damaged. At this time, the corresponding ferrules, sleeves, pins and rollers need to be replaced. During maintenance, only some parts need to be replaced, and they can be replaced directly on site. There is no need to replace the entire chain. After the sleeve and pin are embedded, the inner and outer chain plate ferrules will be driven to expand outward, and they can also have a better interference fit with the hole wall. There is no need to replace the entire chain, which maintains the original chain fatigue strength and reduces maintenance and procurement costs.

[0008] The present invention is further configured as follows: a first limiting boss is arranged on the circumferential side wall of the inner link sleeve near one end of the roller, and a first limiting groove adapted to the first limiting boss is opened at the edge of the sleeve clamping hole near one end of the roller; a second limiting boss is arranged on the circumferential side wall of the outer link sleeve near one end of the roller, and a second limiting groove adapted to the second limiting boss is opened at the edge of the pin shaft clamping hole near one end of the roller.

[0009] By adopting the above technical solution, when installing the inner chain plate ferrule and the outer chain plate ferrule, the first limiting boss and the second limiting boss will be respectively embedded in the first limiting groove and the second limiting groove, so that the inner chain plate ferrule and the outer chain plate ferrule are limited on the inner and outer chain plates, and can be better installed on the inner and outer chain plates.

[0010] The present invention is further configured as follows: the inner diameters of the two opposite inner chain plate sleeves gradually decrease from the opposite ends to the middle thereof.

[0011] By adopting the above technical solution, when the sleeve and the inner chain plate sleeve are disassembled, when one end of the sleeve slides and moves to the part with a larger inner diameter of the inner chain plate sleeve when knocked, the sleeve will not conflict with the inner chain plate sleeve, thereby facilitating the removal of the inner chain plate sleeve.

[0012] The present invention is further configured as follows: a pin dust ring is sleeved on the pin and located between the inner link plate and the outer link plate, a dust groove for the pin dust ring to be embedded is opened at the edge of the pin clamping hole away from one end of the roller, and the edge of the pin dust ring extends obliquely toward one side of the roller and abuts against the bottom of the dust groove.

[0013] By adopting the above technical solution, when the chain is working, if dust falls through the gap between the inner chain plate and the outer chain plate, the dust will fall to the outside of the pin dust ring due to the inclined extension of the edge of the pin dust ring, thereby reducing the possibility of dust or other impurities falling between the pin and the sleeve, reducing the excessive wear of the inner wall of the sleeve due to dust or other impurities when the chain is transporting items, and improving durability.

[0014] The present invention is further configured as follows: protective blocks are provided on both sides of both ends of the inner link sheet.

[0015] By adopting the above technical solution, when the inner link plate and the outer link plate rotate relative to each other, and when the inner link plate and the roller rotate relative to each other, the protective block will wear out. The protective block is made of wear-resistant material, thereby protecting the pin dust ring and preventing the pin dust ring from wearing out too quickly.

[0016] The present invention is further configured as follows: one end of the pin shaft is an insertion end, and the other end is a limiting end, a locking pin is passed through the insertion end, a refueling hole is provided on the limiting end along the length direction of the pin shaft, two cross-arranged lubrication ring grooves are provided on the pin shaft, the refueling hole is communicated with one of the lubrication ring grooves, and an oil seal cover is provided on the limiting end and located in the refueling hole.

[0017] By adopting the above technical solution, the operator opens the oil seal cover and adds lubricating oil from the refueling hole. When the sleeve and the pin rotate relative to each other, the lubricating oil will flow into the lubricating ring groove. The lubricating oil will be evenly distributed on the contact surface between the sleeve and the pin along the two lubricating ring grooves, thereby providing better lubrication, preventing it from wearing too quickly during use, and improving durability.

[0018] The present invention is further configured as follows: a sealing portion is provided on the side wall of the pin dust ring close to the roller, the edges at both ends of the inner wall of the roller are provided with inclined surfaces, a gap is formed between the inclined surfaces and the outer wall of the pin for the sealing portion to be embedded, and an O-ring is provided between the roller and the pin dust ring.

[0019] By adopting the above technical solution, during the relative rotation process, if the lubricating oil in the lubricating ring groove flows to both sides, the sealing part will reduce the possibility of lubricating oil leakage, the O-ring can also better improve the sealing performance, and can also reduce the dust or other impurities entering the inner hole of the sleeve when the chain transports items, causing the inner wall of the sleeve and the outer wall of the pin to wear too quickly, thereby improving durability.

[0020] The present invention is further configured as follows: a spiral oil guide groove is provided on the circumferential side wall of the sleeve, and an oil guide hole communicating with the oil guide groove is provided on the inner wall of the sleeve.

[0021] By adopting the above technical solution, the lubricating oil on the sleeve and the pin shaft will flow into the oil guide groove through the oil guide hole. Since the oil guide groove is spiral, the lubricating oil can flow more evenly between the sleeve and the roller, which facilitates lubrication, prevents excessive wear during use, and improves durability.

[0022] The present invention is further configured as follows: dustproof ring grooves communicating with the interior of the sleeve are provided at both end surfaces, an inner dustproof pad with a C-shaped cross section is embedded in the dustproof ring groove, and an opening side of the inner dustproof pad is arranged toward the roller.

[0023] By adopting the above technical solution, the inner section dustproof pad can increase the sealing between the roller and the inner chain plate, reduce the possibility of dust falling between the roller and the sleeve, and also seal the lubricating oil between the two. The open side is in contact with the roller, which can reduce the contact area and allow the roller to rotate more smoothly.

[0024] The present invention is further configured as follows: a plurality of inverted cone-shaped oil storage holes are axially opened on the circumferential side wall of the sleeve, the oil storage holes are circumferentially distributed in a plurality of rows, the edges of the oil storage holes are provided with chamfered surfaces, and the oil storage holes in two adjacent rows are staggered.

[0025] By adopting the above technical scheme, a certain amount of solid grease can be stored in the oil storage hole. When the roller rotates, its temperature becomes high, and the grease melts to form lubricating oil. The lubricating oil in the oil storage hole will be continuously brought out, and then the inner wall of the roller and the outer wall of the sleeve are continuously lubricated, reducing the friction between the two. At the same time, since inner dust pads are provided at both ends of the sleeve, the possibility of lubricating oil leakage can be reduced, and the lubricating oil can be better lubricated to prevent it from wearing too quickly during use, thereby improving durability. The chamfered surface of the edge of the oil storage hole can facilitate the lubricating oil to be brought out during the rotation of the roller, thereby facilitating lubrication.

[0026] In summary, the beneficial technical effects of the present invention are:

[0027] 1. When it is necessary to disassemble the chain link, the operator first removes the locking pin on the pin shaft, and then knocks the pin shaft to disengage the outer chain piece. At this time, the outer chain piece sleeve will not be pressed tightly by the pin shaft and will be separated from the pin shaft hole. Then, the sleeve is knocked to disengage the inner chain piece. The inner chain piece sleeve will not be pressed tightly by the sleeve and will be separated from the sleeve hole. During the disassembly process, most of the knocking force and friction will act on each sleeve, and the inner and outer chain pieces will be less damaged. At this time, the corresponding sleeves, sleeves, pin shafts and rollers need to be replaced. During maintenance, only some parts need to be replaced, and they can be replaced directly on site without replacing the entire chain. After the sleeve and the pin shaft are embedded, the inner chain piece sleeve and the outer chain piece sleeve will be driven to expand outward, and they can also have a good interference fit with the hole wall, maintaining the original chain fatigue strength. There is no need to replace the entire chain, reducing maintenance and procurement costs;

[0028] 2. When installing the inner chain piece ferrule and the outer chain piece ferrule, the first limiting boss and the second limiting boss will be respectively embedded in the first limiting groove and the second limiting groove, so that the inner chain piece ferrule and the outer chain piece ferrule are limited on the inner and outer chain pieces, and can be installed on the inner and outer chain pieces better;

[0029] 3. When removing the sleeve and the inner chain plate sleeve, when one end of the sleeve slides and moves to the part with a larger inner diameter of the inner chain plate sleeve during knocking, the sleeve will not conflict with the inner chain plate sleeve, making it easier to remove the inner chain plate sleeve;

[0030] 4. When the sleeve and the pin rotate relative to each other, the lubricating oil will flow into the lubricating ring groove, and the lubricating oil will be evenly distributed on the contact surface of the sleeve and the pin along the two lubricating ring grooves, thereby providing better lubrication to prevent it from wearing too quickly during use, improving durability and extending the service life of the chain;

[0031] 5. The lubricating oil on the sleeve and the pin will flow into the oil guide groove through the oil guide hole. Since the oil guide groove is spiral, the lubricating oil can flow more evenly between the sleeve and the roller, which is convenient for lubrication, prevents excessive wear during use, improves durability, and extends the service life of the chain;

[0032] 6. Due to the sealed design of the chain, the sleeves, rollers and pins can be used in a relatively clean lubricated environment, so that they can be used in natural wear and tear, thus extending their service life. Without being disturbed by external dust or other factors, it ensures good wear resistance, making the chain elongation speed much slower than similar products under unnatural wear, thereby extending the service life of the chain and achieving a more durable use purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0034] Figure 2is an exploded schematic diagram of the first embodiment of the present invention;

[0035] Figure 3 is an exploded schematic diagram of another viewing angle of the first embodiment of the present invention;

[0036] Figure 4 This is a schematic structural diagram of an inner chain plate sleeve according to a first embodiment of the present invention;

[0037] Figure 5 It is a schematic diagram of the exploded structure of a sleeve and a roller according to an embodiment of the present invention;

[0038] Figure 6 is a partial cross-sectional view of a pin shaft according to a first embodiment of the present invention;

[0039] Figure 7 is a cross-sectional view of the connection between the inner link plate and the outer link plate of the first embodiment of the present invention;

[0040] Figure 8 yes Figure 7 Enlarged view of part A in the middle;

[0041] Fig. 9 It is a schematic structural diagram of a sleeve according to a second embodiment of the present invention.

[0042] Reference numerals: 100, chain link; 110, chain plate assembly; 111, inner chain plate; 112, outer chain plate; 113, sleeve clamping hole; 114, pin shaft clamping hole; 115, inner chain plate clamping sleeve; 116, outer chain plate clamping sleeve; 117, protection block; 120, sleeve; 121, oil guide groove; 122, first limiting boss; 123, first limiting groove; 124, second limiting boss; 125, second limiting groove; 1 26. Oil filling hole; 127. Lubrication ring groove; 128. Oil seal cover; 129. Oil guide hole; 130. Roller; 140. Pin; 141. Insertion end; 142. Limit end; 143. Locking pin; 144. Mounting platform; 150. Pin dust ring; 151. Dustproof groove; 152. Sealing part; 153. O-ring; 154. Dustproof ring groove; 155. Inner section dustproof pad; 160. Oil storage hole. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0044] Embodiment 1

[0045] A convenient and detachable durable industrial conveyor chain comprises a plurality of chain links 100 connected in sequence, wherein the chain link 100 comprises a chain plate group 110, a sleeve 120, a roller 130 and a pin 140, the chain plate group 110 comprises two inner chain plates 111 and two outer chain plates 112 arranged at intervals, the two inner chain plates 111 are located inside the two outer chain plates 112, the inner chain plates 111 and the outer chain plates 112 are connected end to end, the sleeve 120 is arranged between the two inner chain plates 111, the roller 130 is sleeved on the sleeve 120, and the pin 140 passes through the inner chain plates 111 and the outer chain plates 112.

[0046] Both ends of the inner link 111 are provided with sleeve clamping holes 113, and the sleeve clamping holes 113 are embedded with inner link clamping sleeves 115, and the inner link clamping sleeves 115 have a notch, and the inner link clamping sleeves 115 are integrally provided with a first limiting boss 122 on the circumferential side wall of the inner link clamping sleeve 115 close to the roller 130, and the sleeve clamping hole 113 is provided with a first limiting groove 123 adapted to the first limiting boss 122 at the edge of the end close to the roller 130. The inner diameters of the two inner link clamping sleeves 115 gradually decrease from the opposite end to the middle thereof.

[0047] Both ends of the outer link 112 are provided with a pin hole 114, one end of the pin 140 is an insertion end 141, and the other end is a limit end 142. The pin hole 114 near the insertion end 141 is waist-shaped, and a mounting platform 144 adapted thereto is provided on the insertion end 141, and the pin hole 114 near the limit end 142 is round. At the same time, an outer link sleeve 116 is embedded in the pin hole 114, and the outer link sleeve 116 has a notch. A second limit boss 124 is provided on the circumferential side wall of the outer link sleeve 116 near one end of the roller 130, and a second limit groove 125 adapted to the second limit boss 124 is provided at the edge of the pin hole 114 near one end of the roller 130.

[0048] The stopper end 142 is provided with a refueling hole 126 along the length direction of the pin shaft 140. The pin shaft 140 is provided with two cross-arranged lubrication ring grooves 127. The refueling hole 126 is communicated with one of the lubrication ring grooves 127. The stopper end 142 is provided with an oil seal cover 128 embedded in the refueling hole 126. The circumferential side wall of the sleeve 120 is provided with a spiral oil guide groove 121. At the same time, the inner wall of the sleeve 120 is provided with an oil guide hole 129 communicated with the oil guide groove 121.

[0049] The roller 130 is sleeved on the sleeve 120, and the two ends of the sleeve 120 are inserted into the sleeve clamping hole 113. When the outer wall of the sleeve 120 is gradually inserted, it will be pressed against the inner wall of the inner chain piece clamping sleeve 115. The interference fit between the two will make the inner chain piece clamping sleeve 115 press against the inner wall of the sleeve clamping hole 113 after expanding outward. Then, the two inner chain pieces 111 are inserted between the two outer chain pieces 112, and the pin 140 is inserted. At this time, the pin 140 and the outer chain piece clamping sleeve 116 have an interference fit, and after expanding outward, it will press against the inner wall of the pin clamping hole 114. At the same time, a locking pin 143 is inserted on the insertion end 141 of the pin 140.

[0050] A pin dust ring 150 is sleeved on the pin 140 and located between the inner link 111 and the outer link 112. A dust groove 151 for the pin dust ring 150 to be embedded is provided at the edge of the pin clamping hole 114 away from the roller 130. The edge of the pin dust ring 150 extends toward the side of the roller 130 and contacts the bottom of the dust groove 151. A sealing portion 152 is integrally provided on the side wall of the pin dust ring 150 close to the roller 130. The edges at both ends of the inner wall of the roller 130 are provided with inclined surfaces. A gap for the sealing portion 152 to be embedded is formed between the inclined surface and the outer wall of the middle pin, and an O-ring 153 is provided between the roller 130 and the pin dust ring 150. The two end surfaces of the sleeve 120 are provided with dustproof ring grooves 154 communicating with the interior thereof, and the dustproof ring grooves 154 are embedded with inner section dustproof pads 155 having a C-shaped cross section, and the opening side of the inner section dustproof pads 155 is arranged toward the roller 130. Both sides of the inner link 111 are provided with protective blocks 117, which can be made of aluminum oxide blocks, one protective block 117 is located between the inner link 111 and the outer link 112, and the other protective block 117 is located between the roller 130 and the inner link 111.

[0051] Such inner link plate clamping sleeve 115 and outer link plate clamping sleeve 116 can also be used in different types of chains such as bent plate chains, and can also achieve better effects.

[0052] The implementation principle of this embodiment is as follows: firstly, the roller 130 is sleeved on the sleeve 120, and then the inner dustproof pad 155 is embedded in the dustproof ring groove 154, and then the inner chain piece clamping sleeve 115 is embedded in the sleeve clamping hole 113, and the first limiting boss 122 is pressed against the bottom of the first limiting groove 123, and the outer chain piece clamping sleeve 116 is embedded in the pin clamping hole 114, and the second limiting boss 124 is pressed against the bottom of the second limiting groove 125. Two inner chain pieces 111 are placed on both ends of the sleeve 120, and the two ends of the sleeve 120 are respectively embedded in the sleeve clamping hole 113, and the sleeve 120 is pressed against the inner wall of the inner chain piece clamping sleeve 115, so that it will expand outward and press against the inner wall of the sleeve clamping hole 113.

[0053] The O-ring 153 is sleeved on the outside of the sealing part 152, and the pin dust ring 150 is embedded in the dustproof groove 151, and then the two outer chain pieces 112 are placed outside the inner chain piece 111, and then the pin 140 is inserted, and the insertion end 141 of the pin 140 is inserted from the circular pin clamping hole 114, and then passes out from the waist-shaped pin clamping hole 114, and the installation platform 144 is abutted against the inner wall of the outer chain piece clamping sleeve 116, and the locking pin 143 is passed through the insertion end 141 and its end is bent to prevent it from falling off. Finally, lubricating oil is injected into the pin 140 through the oil filling hole 126, and the oil seal cover 128 blocks the oil filling hole 126.

[0054] When the chain is working, the lubricating oil flows into the lubricating ring groove 127, which will continuously lubricate the inner wall of the pin shaft 140 and the outer wall of the sleeve 120. If the lubricating oil in the lubricating ring groove 127 flows to both sides, the sealing part 152 will reduce the possibility of lubricating oil leakage, and the O-ring 153 can also better improve the sealing performance. The lubricating oil will flow into the oil guide groove 121 through the oil guide hole 129, and then lubricate the contact surface between the sleeve 120 and the roller 130. At the same time, the inner section dustproof pad 155 will improve the sealing performance between the two.

[0055] When disassembling or repairing the chain link 100, after pulling out the locking pin 143, knock the pin shaft 140 to make it detach from the chain link 100. At this time, the outer chain piece sleeve 116 is loosened and can be easily removed. Then, the sleeve 120 is knocked to gradually detach it from the inner chain piece sleeve 115. Due to the different inner diameters of the inner walls of the inner chain piece sleeve 115, when the two ends of the sleeve 120 are no longer tightly against the end with the smallest inner diameter of the inner chain piece sleeve 115, it will be easier to detach. In the process of disassembly, most of the knocking force and friction will act on each The sleeve is on the chain plate set 110, thereby reducing the possibility of damage during disassembly. The inner chain plate 111 and the outer chain plate 112 are less damaged, so only the sleeve 120, the roller 130 and the pin 140 need to be replaced. After the new inner chain plate sleeve 115 and the outer chain plate sleeve 116 are installed, the components can still maintain an interference fit state, and there is no need to replace the entire chain. While the procurement cost is reduced, the maintenance cost can also be reduced. The operator can repair the chain more conveniently, saving time cost, which greatly reduces the overall cost.

[0056] Embodiment 2

[0057] A convenient and detachable durable industrial conveyor chain is different from the first embodiment in that a plurality of inverted cone-shaped oil storage holes 160 are axially opened on the circumferential side wall of the sleeve 120, the oil storage holes 160 are distributed in multiple rows along the circumferential direction, and the edges of the oil storage holes 160 are provided with chamfered surfaces, and the oil storage holes 160 in two adjacent rows are staggered.

[0058] The beneficial effect of this embodiment is that grease is first added to the oil storage hole 160 during installation. As the roller 130 rotates continuously, its temperature continues to rise, and the grease melts to form lubricating oil, and the lubricating oil can be brought out from the oil storage hole 160, thereby reducing the friction between the sleeve 120 and the roller 130, so that it can rotate better, prevent it from wearing too quickly during use, and improve durability.

[0059] Furthermore, after the oil storage holes 160 are staggered, the circumferential side wall of the sleeve 120 can be evenly lubricated, so that each circumferential surface of the inner wall of the roller 130 along the length direction can be lubricated, thereby improving the lubrication effect.

[0060] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A conveniently disassembled durable industrial conveyor chain, comprising a plurality of chain links (100) connected in sequence, characterized in that: The chain link (100) comprises a chain plate group (110), a sleeve (120) arranged between the chain plate groups (110), a roller (130) sleeved on the sleeve (120), and a pin (140) passing between the chain plate group (110) and the sleeve (120); the chain plate group (110) comprises two inner chain plates (111) arranged at intervals and two outer chain plates (112) located outside the inner chain plates (111) and arranged at intervals; Both ends of the inner chain piece (111) are provided with sleeve clamping holes (113), and the sleeve clamping holes (113) are embedded with an inner chain piece clamping sleeve (115) with a notch and for one end of the sleeve (120) to be embedded; Both ends of the outer chain piece (112) are provided with a pin shaft clamping hole (114), and the pin shaft clamping hole (114) is embedded with an outer chain piece clamping sleeve (116) with a notch and for one end of the pin shaft (140) to be embedded; A first limiting boss (122) is provided on the circumferential side wall of the inner chain plate sleeve (115) close to one end of the roller (130), and a first limiting groove (123) adapted to the first limiting boss (122) is provided at the edge of the sleeve clamping hole (113) close to one end of the roller (130); A second limiting boss (124) is provided on the circumferential side wall of the outer link sleeve (116) close to one end of the roller (130), and a second limiting groove (125) adapted to the second limiting boss (124) is provided at the edge of the pin shaft clamping hole (114) close to one end of the roller (130); The inner diameters of the two opposite inner chain plate sleeves (115) gradually decrease from the opposite ends to the middle thereof.

2. The conveniently disassembled durable industrial conveyor chain according to claim 1 is characterized by: A pin dust ring (150) is sleeved on the pin shaft (140) and located between the inner link plate (111) and the outer link plate (112); a dustproof groove (151) for the pin dust ring (150) to be inserted is provided at an edge of the pin shaft clamping hole (114) at one end away from the roller (130); an edge of the pin dust ring (150) extends obliquely toward one side of the roller (130) and contacts the bottom of the dustproof groove (151).

3. The conveniently disassembled durable industrial conveyor chain according to claim 2 is characterized in that: Protection blocks (117) are provided on both sides of both ends of the inner link piece (111).

4. The conveniently disassembled durable industrial conveyor chain according to claim 2 is characterized in that: One end of the pin shaft (140) is an insertion end (141), and the other end is a limiting end (142). A locking pin (143) is inserted through the insertion end (141). A refueling hole (126) is provided on the limiting end (142) along the length direction of the pin shaft (140). Two cross-arranged lubrication ring grooves (127) are provided on the pin shaft (140). The refueling hole (126) is communicated with one of the lubrication ring grooves (127). An oil seal cover (128) is provided on the limiting end (142) and located in the refueling hole (126).

5. The conveniently disassembled durable industrial conveyor chain according to claim 4 is characterized in that: A sealing portion (152) is provided on the side wall of the pin shaft dust ring (150) close to the roller (130), and the edges at both ends of the inner wall of the roller (130) are provided with inclined surfaces, and a gap is formed between the inclined surfaces and the outer wall of the pin shaft (140) for the sealing portion (152) to be embedded, and an O-ring (153) is provided between the roller (130) and the pin shaft dust ring (150).

6. The conveniently disassembled durable industrial conveyor chain according to claim 1 is characterized by: A spiral oil guide groove (121) is provided on the circumferential side wall of the sleeve (120), and an oil guide hole (129) communicating with the oil guide groove (121) is provided on the inner wall of the sleeve (120).

7. The conveniently disassembled durable industrial conveyor chain according to claim 6, characterized in that: Dustproof ring grooves (154) communicating with the interior of the sleeve (120) are formed at both end surfaces thereof, and an inner section dustproof pad (155) having a C-shaped cross section is embedded in the dustproof ring groove (154), and an opening side of the inner section dustproof pad (155) is arranged toward the roller (130).

8. The conveniently disassembled durable industrial conveyor chain according to claim 7, characterized in that: A plurality of inverted cone-shaped oil storage holes (160) are axially provided on the circumferential side wall of the sleeve (120), the oil storage holes (160) are distributed in a plurality of rows along the circumferential direction, the edges of the oil storage holes (160) are provided with chamfered inclined surfaces, and the oil storage holes (160) in two adjacent rows are staggered.

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