Supporting mechanism of pellet scraper
By using rotating support wheels and a detachable connection design in the scraper conveyor, the problems of chain wear and disengagement were solved, achieving stable operation and efficient production of the equipment.
Patent Information
- Application Number
- CN202520590087.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-31
AI Technical Summary
In traditional scraper conveyors, excessive friction between the chain and the pallet leads to severe wear, frequent chain disconnections, and short maintenance cycles, thus affecting production and transportation efficiency.
The chain is supported by a rotating support wheel to reduce friction. The support wheel is positioned precisely by means of a detachable connecting shaft, a spacer tube, and a washer, which prevents wear and misalignment. A retaining ring is used to prevent the connecting shaft from rubbing against the housing.
It reduces chain wear, improves the operational stability and maintenance cycle of the scraper conveyor, extends the service life of the equipment, and improves production and transportation efficiency.
Smart Images
Figure CN223962706U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of scraper conveyor technology, and specifically to a support mechanism for a pellet scraper conveyor. Background Technology
[0002] In industrial production, scraper conveyors are important material conveying equipment, widely used in coal, metallurgy, chemical and other fields. The scrapers in a scraper conveyor are welded between chains on both sides, and the chains drive the scrapers to transport materials. Because scraper conveyors often cover long distances, the bottom of the chains needs to be supported to ensure stable transmission and prevent sagging due to weight.
[0003] Traditional scraper conveyors mostly use a long strip of plate (collectively called a pallet) which is welded to the inner wall of the machine casing so that the pallet supports the bottom of the chain that is returning above.
[0004] However, this pallet support method will reveal some drawbacks after long-term use. Due to the large contact area between the chain and the pallet, the chain has a long friction contact time with the pallet during transmission, resulting in excessive friction. After long-term transportation, the surface of the pallet and chain will show a great degree of wear. In severe cases, it can even lead to chain disconnection, high failure rate, short replacement and maintenance cycle, and greatly reduced production and transportation efficiency. Utility Model Content
[0005] In view of this, the present invention provides a support mechanism for a pellet scraper, which can reduce the friction generated when supporting the chain, thereby reducing chain wear, making the scraper run more stably, significantly extending the overall replacement and maintenance cycle of the equipment, and greatly improving production and transportation efficiency.
[0006] To address the aforementioned technical problems, this utility model provides a support mechanism for a pellet scraper mill, comprising a housing and two rows of chains installed within the housing. Multiple connecting shafts are arranged on the inner wall of the housing, each shaft mounted below the chains. Two support wheels are rotatably mounted on both sides of the surface of each connecting shaft, corresponding to the positions directly below the two rows of chains, and contacting the lower surface of the chains, thus supporting the chains. Because the support wheels are rotatable, the chains drive them to rotate during transport. This rotation ensures the support wheels support the chains while significantly reducing friction between them and the chains, thereby reducing wear on the contact surfaces and making the scraper mill more stable. This significantly extends the overall replacement and maintenance cycle of the equipment, greatly improving production and transportation efficiency.
[0007] Multiple connecting shafts are evenly distributed on the inner wall of the housing, and the spacing between each connecting shaft is equal, so that the force supported by the support wheels on the chain is more even. Two support wheels are rotatably arranged on both sides of the surface of each connecting shaft, and the two support wheels are respectively located directly below the two rows of chains, so that the support points of the support wheels on the chain are more concentrated.
[0008] The connecting shaft is detachably mounted on the housing, and the support wheel is detachably mounted on the connecting shaft. The detachable installation of the connecting shaft and the support wheel allows the staff to remove the support, making it easier to carry out maintenance and repair work.
[0009] The housing has through holes on both sides, and the two ends of the connecting shaft are inserted into these holes. Workers can install the connecting shaft by passing it through the holes, and remove it simply by pulling it out. A limit rod is welded to one end of the connecting shaft, perpendicularly connected to it. The length of the limit rod is greater than the diameter of the through holes in the housing, thus limiting the connection and preventing one end from detaching from the through holes.
[0010] The center of the support wheel has a through hole adapted to the connecting shaft. The support wheel is fitted onto the connecting shaft through the through hole. The operator first inserts the connecting shaft into the housing through the through hole on one side, then aligns the through holes of the two support wheels with the ends of the connecting shaft and inserts them one by one. Then, the connecting shaft is inserted into the through hole on the other side of the housing. The positions of the two support wheels on the connecting shaft are then adjusted until the support wheels are positioned directly below the chain, thus completing the installation.
[0011] A spacer tube is fitted at the center of the connecting shaft. The two ends of the spacer tube are respectively attached to the side walls of the two support wheels. When it needs to be installed in scraper conveyors of different specifications, in order to limit the position of the support wheels, a spacer tube of a specified length can be made according to the distance between the two support wheels. This allows the two support wheels under the chain to be attached to the two ends of the spacer tube. A washer is filled between the support wheel and the inner side wall of the housing through the connecting shaft, so that the support wheel is always between the spacer tube and the washer. The spacer tube and the washer cooperate to limit the position of the support wheel, thereby preventing the support wheel from shifting position on the connecting shaft.
[0012] A retaining ring is provided on the outer wall of the housing, corresponding to the axial position of the housing through hole. The diameter of the inner ring of the retaining ring is smaller than the diameter of the housing through hole, and the inner ring of the retaining ring is adapted to the cross-section of the connecting shaft. The connecting shaft is inserted into the inner ring of the retaining ring and the through hole of the housing, so that the retaining ring supports the connecting shaft, allowing the connecting shaft to rotate within the retaining ring without contacting the through hole of the housing, thereby preventing wear on the through hole of the housing and improving the stability of the equipment.
[0013] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:
[0014] 1. When this utility model is used, it can reduce the friction generated when supporting the chain, thereby reducing chain wear, making the scraper conveyor run more stably, significantly extending the overall replacement and maintenance cycle of the equipment, and greatly improving production and transportation efficiency.
[0015] 2. When using this utility model, the support wheel, connecting shaft and housing can be detachably connected, which facilitates the later maintenance and repair of the equipment.
[0016] 3. When using this utility model, the combination design of the spacer tube and washer ensures that the support wheel is always accurately located directly below the chain, preventing the support wheel from shifting position.
[0017] 4. When using this utility model, the fixing ring and connecting shaft are designed to cooperate to avoid direct friction between the shaft and the through hole of the housing, thus preventing wear on the housing. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the scraper conveyor part of the present invention;
[0019] Figure 2 For the present utility model Figure 1 Front view of the middle structure;
[0020] Figure 3 For the present utility model Figure 2 Side sectional view of the structure at point AA;
[0021] Figure 4 This is a schematic diagram of the structure of the connecting shaft after the support wheel of this utility model has been disassembled;
[0022] Figure 5 This is a schematic diagram of the threaded fit between the connecting shaft and the limiting rod of this utility model.
[0023] Explanation of reference numerals in the attached figures:
[0024] 100. Housing; 200. Chain; 300. Connecting shaft; 301. Support wheel; 302. Spacer tube; 303. Washer; 304. Fixing ring; 305. Limiting rod. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0026] A support mechanism for a pellet scraper mill, such as Figure 1 , Figure 2 and Figure 3 As shown: It includes a housing 100 and two rows of chains 200 installed inside the housing 100. The housing 100 is the outer shell of the scraper conveyor. Multiple connecting shafts 300 are provided on the inner side wall of the housing 100. Since the chain 200 is divided into an upper part and a lower part, each connecting shaft 300 is installed below the upper part of the chain 200. Two support wheels 301 are rotatably arranged on both sides of the surface of each connecting shaft 300. The two support wheels 301 are respectively located directly below the two rows of chains 200, and the support wheels 301 are in contact with the lower surface of the upper part of the chain 200, so that the support wheels 301 support the chain 200. When the chain 200 starts transporting via the drive mechanism in the scraper conveyor, the support wheel 301 is rotatable. During transport, the chain 200 drives the support wheel 301 to rotate. Because the contact area between the support wheel 301 and the chain 200 is small, and the contact time between a single chain link and the support wheel 301 is short, the support wheel 301 can not only support the chain 200 during rotation but also greatly reduce the friction between the support wheel 301 and the chain 200. This reduces the wear on the contact surface between the support wheel 301 and the chain 200, making the scraper conveyor run more stably. This significantly extends the overall replacement and maintenance cycle of the equipment and greatly improves production and transportation efficiency.
[0027] Specifically, multiple connecting shafts 300 are evenly distributed on the inner wall of the housing 100, and the spacing between each connecting shaft 300 is equal, so that the force supported by the support wheel 301 on the chain 200 is more uniform. An additional connecting shaft 300 can be set at the position where the transport angle of the chain 200 is deviated, thereby further improving the stability of the chain 200. Two support wheels 301 are rotatably set on both sides of the surface of each connecting shaft 300, and the two support wheels 301 are respectively located directly below the two rows of chains 200, so that the support points of the support wheels 301 on the chain 200 are more concentrated.
[0028] according to Figure 2 and Figure 3As shown, the connecting shaft 300 is detachably mounted on the housing 100, and the support wheel 301 is detachably mounted on the connecting shaft 300. The detachable mounting of the connecting shaft 300 and the support wheel 301 makes it easier for workers to disassemble the connecting shaft 300 and the support wheel 301 for maintenance and repair, thereby improving the service life of the support wheel 301.
[0029] Specifically, through holes are provided on both sides of the housing 100. Both ends of the connecting shaft 300 are inserted into these through holes, with the ends of the connecting shaft 300 extending a certain distance from the through holes. This allows workers to pass the connecting shaft 300 through the through holes for installation. When disassembly is required, the connecting shaft 300 can be simply pulled out of the through holes. A limiting rod 305 is welded to one end of the connecting shaft 300. The limiting rod 305 is perpendicularly connected to the connecting shaft 300 and is located on the outside of the housing 100. The length of the limiting rod 305 is greater than the diameter of the through holes in the housing 100, allowing the limiting rod 305 to limit the connection shaft 300 and prevent one end of the connecting shaft 300 from detaching from the through holes.
[0030] Furthermore, according to Figure 5 As shown, the limiting rod 305 can also be installed using a threaded connection. The limiting rod 305 has an external threaded surface, and internal threaded holes adapted to the limiting rod 305 are drilled through both ends of the connecting shaft 300. After the connecting shaft 300 is inserted into the through hole of the housing 100, the limiting rod 305 is threaded into the internal threaded hole of the connecting shaft 300. This causes the limiting rod 305, perpendicular to the connecting shaft 300, to block the outer wall of the housing 100, thus limiting and fixing the connecting shaft 300. When disassembly is required, the limiting rod 305 can be removed from both ends of the connecting shaft 300 to release the limiting and fixing effect. Finally, the connecting shaft 300 can be removed from the through hole of the housing for disassembly.
[0031] Specifically, the support wheel 301 has a through hole in its center that fits the connecting shaft 300. The support wheel 301 is fitted onto the connecting shaft 300 through the through hole. When installing the support wheel 301, the operator first inserts the connecting shaft 300 into the through hole on one side of the housing 100 until the connecting shaft 300 extends into the housing 100. Then, the through holes of the two support wheels 301 are aligned with the ends of the connecting shaft 300 and inserted in sequence. Then, the end of the connecting shaft 300 is inserted into the through hole on the other side of the housing 100. The positions of the two support wheels 301 on the connecting shaft 300 are then adjusted until the support wheels 301 are positioned directly below the chain 200. The installation is then complete. When disassembling, the connecting shaft 300 is pulled out from the through hole on one side, and the support wheel 301 is removed from the surface of the connecting shaft 300. Finally, the entire connecting shaft 300 is pulled out from the through hole of the housing 100. This makes the installation and disassembly of the support wheel 301 more convenient and facilitates later equipment maintenance.
[0032] according to Figure 3 and Figure 4 As shown, a spacer tube 302 is sleeved at the center of the connecting shaft 300. The spacer tube 302 is sleeved on the connecting shaft 300 through its hollow structure. The two ends of the spacer tube 302 are respectively attached to the side walls of the two support wheels 301. Similarly, when it needs to be installed in scraper conveyors of different specifications, if the spacing between the two rows of chains 200 is different, the required installation spacing between the support wheels 301 is also different. In order to limit the position of the support wheels 301, a spacer tube 302 of a specified length can be made according to the distance between the two support wheels 301. This ensures that while the two support wheels 301 are located directly below the chain 200, the two support wheels 301 are also attached to the two ends of the spacer tube 302. A washer 303 is installed between the support wheel 301 and the inner wall of the housing 100 via a connecting shaft 300, ensuring that the support wheel 301 is always positioned between the spacer tube 302 and the washer 303. The washer 303 fills the gap between the support wheel 301 and the inner wall of the housing 100, allowing the spacer tube 302 and the washer 303 to cooperate in limiting the position of the support wheel 301, thereby preventing the support wheel 301 from shifting position on the connecting shaft 300. Furthermore, washers 303 of different widths can be manufactured according to the distance between the support wheel 301 and the inner wall of the housing 100, ensuring that after installation, both sides of the washer 303 always contact the inner wall of the housing 100 and the side wall of the support wheel 301.
[0033] When installing the support wheel 301, the worker first inserts the connecting shaft 300 into the through hole on one side of the housing 100. After the connecting shaft 300 is inserted into the housing 100, one washer 303 is then fitted onto the connecting shaft 300, and then another support wheel 301 is fitted onto the connecting shaft 300, so that the washer 303 is positioned between the support wheel 301 and the inner wall of the housing 100. Then, the spacer tube 302, the other support wheel 301, and the other washer 303 are sequentially fitted onto the connecting shaft 300. The spacer tube 302 is positioned so that its two ends fit against the side walls of the two support wheels 301, and the washer 303 fills the gap between the support wheel 301 and the housing 100. Finally, the end of the connecting shaft 300 is inserted into another through hole in the housing 100 to complete the installation. Since the chain 200 will drive the support wheel 301 to rotate on the connecting shaft 300 due to friction during transportation, the operator can apply lubricating oil to the contact area between the inner ring of the support wheel 301 and the connecting shaft 300 to reduce wear.
[0034] according to Figure 1 and Figure 3 As shown, when the support wheel 301 rotates, it may cause the connecting shaft 300 to rotate due to friction. However, the housing 100 of some scraper conveyors is relatively thin. In order to prevent the connecting shaft 300 from causing wear on the through hole of the housing 100, a fixing ring 304 is provided on the outer wall of the housing 100. The fixing ring 304 corresponds to the axial position of the through hole of the housing 100. The diameter of the inner ring of the fixing ring 304 is smaller than the diameter of the through hole of the housing 100, and the inner ring of the fixing ring 304 is adapted to the cross-section of the connecting shaft 300. The connecting shaft 300 is inserted into the inner ring of the fixing ring 304 and the through hole of the housing 100, so that the fixing ring 304 supports the connecting shaft 300, allowing the connecting shaft 300 to rotate within the fixing ring 304 without contacting the through hole of the housing 100, thereby preventing wear on the through hole of the housing 100 and improving the stability of the equipment.
[0035] It should be clarified here that the housing 100, chain 200 and the drive mechanism that drives the chain 200 are all equipment in the prior art scraper conveyor. Since they are not the main technical features of this utility model, the model is not limited here, and their structure is not described in detail. Only the usage and installation position of the connecting shaft 300 and support wheel 301 are described in detail.
[0036] How to use this utility model:
[0037] When installing the connecting shaft 300 and the support wheel 301, the operator first inserts the connecting shaft 300 into the through hole on one side of the housing 100. After the connecting shaft 300 is inserted into the housing 100, one washer 303 is then fitted onto the connecting shaft 300, and then one support wheel 301 is fitted onto the connecting shaft 300, so that the washer 303 is positioned between the support wheel 301 and the inner wall of the housing 100. Then, the spacer tube 302, the other support wheel 301, and the other washer 303 are sequentially fitted onto the connecting shaft 300. The connecting shaft 300 is attached to the shaft, so that the two ends of the spacer tube 302 are attached to the two side walls of the two support wheels 301, and the washer 303 fills the gap between the support wheel 301 and the housing 100. Finally, the end of the connecting shaft 300 is inserted into another through hole in the housing 100 to complete the installation. Since the chain 200 will drive the support wheel 301 to rotate on the connecting shaft 300 due to friction during transportation, the operator can apply lubricating oil to the contact area between the inner ring of the support wheel 301 and the connecting shaft 300 to reduce wear.
[0038] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A support mechanism for a pellet scraper mill, comprising a housing (100) and two rows of chains (200) installed within the housing (100), characterized in that: A support wheel (301) is rotatably mounted on the side wall of the housing (100) via a connecting shaft (300), and the support wheel (301) is located directly below the chain (200). The support wheel (301) is in contact with the lower surface of the chain (200) and is used to support the chain (200).
2. The support mechanism of a pellet scraper mill as described in claim 1, characterized in that: The number of connecting shafts (300) is multiple, and the multiple connecting shafts (300) are evenly distributed on the inner sidewall of the housing (100). Each connecting shaft (300) has two support wheels (301) rotatably arranged on both sides of its surface, and the two support wheels (301) are respectively located directly below the two rows of chains (200).
3. The support mechanism of a pellet scraper mill as described in claim 2, characterized in that: The connecting shaft (300) is detachably mounted on the housing (100), and the support wheel (301) is detachably mounted on the connecting shaft (300).
4. The support mechanism of a pellet scraper mill as described in claim 3, characterized in that: The two side walls of the housing (100) are provided with through holes, and the two ends of the connecting shaft (300) are inserted into the through holes. One end of the connecting shaft (300) is provided with a limiting rod (305). The limiting rod (305) is located on the outside of the housing (100), and the length of the limiting rod (305) is greater than the diameter of the through hole of the housing (100).
5. The support mechanism of a pellet scraper mill as described in claim 4, characterized in that: The center of the support wheel (301) is provided with a through hole adapted to the connecting shaft (300), and the support wheel (301) is sleeved on the connecting shaft (300) through the through hole.
6. The support mechanism of a pellet scraper mill as described in claim 5, characterized in that: A spacer tube (302) is sleeved at the center of the connecting shaft (300). The two ends of the spacer tube (302) are respectively attached to the side walls of the two support wheels (301). A washer (303) is filled between the support wheel (301) and the inner side wall of the housing (100) through the connecting shaft (300). The washer (303) and the spacer tube (302) are used to fix the position of the support wheel (301).
7. The support mechanism of a pellet scraper mill as described in claim 4, characterized in that: A fixing ring (304) is provided on the outer side wall of the housing (100). The fixing ring (304) is located at the axial position of the through hole of the housing (100), and the inner ring of the fixing ring (304) is adapted to the cross-section of the connecting shaft (300). The connecting shaft (300) is inserted into the inner ring of the fixing ring (304) and the through hole of the housing (100). The fixing ring (304) is used to support the connecting shaft (300).