Roller for transmitting power through chain wheel friction

Abstract

The utility model relates to a roller utilizing chain wheel friction to transmit power, which comprises an outer cylinder, an inner shaft and a chain wheel transmission unit, fixed discs are arranged at two ends in the outer cylinder, the inner shaft is arranged between the two fixed discs in a penetrating manner, and the inner shaft is rotatably connected with the fixed discs; a chain wheel transmission unit is arranged at any end of the inner shaft and comprises a transmission chain wheel, a friction piece and a baffle ring, the transmission chain wheel is rotationally arranged at the end of the inner shaft, the inner shaft on the two sides of the transmission chain wheel is sleeved with a shaft sleeve and the friction piece respectively, the friction piece is connected with the transmission chain wheel in an inserted mode, and the friction piece is a circular ring body formed by sequentially splicing at least two friction plates. A baffle ring is elastically connected to the fixing disc in a sliding mode, the inner shaft is sleeved with the baffle ring, the baffle ring moves in the axial direction of the inner shaft, and the baffle ring is in surface contact with the friction plate. The transmission chain wheel can drive the outer barrel to rotate at the same speed through friction force, when the outer barrel is subjected to load pressure, the outer barrel and the transmission chain wheel operate at differential speed, and friction between a load and the roller is prevented.

Description

Technical Field

[0001] This utility model relates to the field of roller conveyor technology, and in particular to a roller that uses sprocket friction to transmit power. Background Technology

[0002] After passing through the polishing equipment, the sheet material is conveyed by a roller conveyor. That is, the sheet material exiting the polishing equipment is immediately supported and transported by the roller conveyor, which consists of several chain-driven rollers. The rotation of the rollers transports the sheet material. The problem with this process is that because the sheet material moves slowly in the polishing equipment while the roller conveyor runs at a relatively high speed, a speed difference occurs between the sheet material and the rollers. This causes direct sliding friction between the sheet material and the roller conveyor, resulting in wear on both the sheet material surface and the rollers. Summary of the Invention

[0003] To address the problem of wear caused by inconsistent running speeds between the sheet metal and the roller, this invention provides a roller that uses sprocket friction to transmit power. The roller and sprocket use friction plates to transmit power and enable roller operation. At the same time, the sprocket and roller can rotate relative to each other. The plate metal pressing roller used in the polishing equipment avoids friction between the sheet metal and the roller.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A roller that uses sprocket friction to transmit power includes an outer cylinder, an inner shaft and a sprocket drive unit. Fixed discs are provided at both ends inside the outer cylinder, and the inner shaft passes through the two fixed discs. The inner shaft and the fixed discs are rotatably connected, and the outer cylinder and the fixed discs rotate together relative to the inner shaft.

[0006] The sprocket drive unit is provided at either end of the inner shaft. The sprocket drive unit includes a drive sprocket, a friction element, and a retaining ring. The drive sprocket is rotatably mounted at the end of the inner shaft. Bushings and the friction element are respectively fitted on the inner shaft on both sides of the drive sprocket. The bushings facilitate limiting the position of the drive sprocket. The friction element is inserted into the drive sprocket, facilitating the replacement of the friction element. The friction element is a ring formed by at least two friction plates sequentially spliced ​​together, avoiding the direct mounting of a whole ring of friction plates on the inner shaft.

[0007] The retaining ring is elastically slidably connected to the fixed plate, which facilitates the axial movement of the retaining ring. The retaining ring is sleeved on the inner shaft and moves axially along the inner shaft. The retaining ring and the friction plate are in surface contact, and the power is easily transmitted through friction. The retaining ring and the friction plate are both arranged outside the outer cylinder, which facilitates manual operation of the retaining ring and the friction plate.

[0008] Furthermore, the outer cylinder is a hollow cylinder, and the outer surface of the outer cylinder is covered with a rubber pad to prevent the plate from making hard contact with the outer cylinder. The outer cylinder is welded to the fixed plate, which is a ring. A bearing is provided between the fixed plate and the inner shaft to improve the smoothness of the outer cylinder rotation. The length of the inner shaft is greater than the length of the outer cylinder. The inner shaft has threaded holes at the center of both ends. The frame is connected to the threaded holes by bolts, which facilitates the connection and fixation of the frame and the inner shaft.

[0009] Furthermore, the transmission sprocket is sleeved on the inner shaft, and a bearing is provided between the sprocket and the inner shaft to facilitate the rotation of the transmission sprocket; the transmission sprocket includes a sprocket body and a fixed ring, and the fixed ring is fixedly provided on one end face of the sprocket body. The fixed ring is a circular ring with a cross-section in the shape of "]", and the friction element is inserted into the end face of the fixed ring.

[0010] Furthermore, there are two friction plates, which are fan-shaped rings. The two friction plates are spliced ​​together to form a circle. Each friction plate has an insertion hole. The end face of the fixing ring is provided with an insertion block. The insertion block is inserted into the insertion hole, which facilitates the insertion and installation of the transmission sprocket and the friction plate. The length of the insertion block is less than the depth of the insertion hole, which makes it easy to remove the friction plate. The retaining ring presses the friction plate.

[0011] Furthermore, the retaining ring is a circular ring, and one end face of the retaining ring has an uneven texture to form a rough friction surface. The friction surface of the retaining ring contacts the friction plate, which increases the magnitude of the friction force.

[0012] The retaining ring is provided with multiple guide rods in a circumferential direction. The guide rods pass through the fixed plate and are slidably connected to the fixed plate to guide the sliding of the retaining ring. Each guide rod between the retaining ring and the fixed plate is fitted with a small compression spring to facilitate the application of force to make the retaining ring move towards the friction plate.

[0013] Furthermore, an adjustment assembly is provided at one end of the inner shaft opposite to the sprocket drive unit. The adjustment assembly includes a locking nut and a large compression spring. The locking nut is threaded onto the end of the inner shaft, and the large compression spring is sleeved on the inner shaft between the locking nut and the fixed disc. Tightening the locking nut increases the friction between the friction plate and the retaining ring, thereby improving the roller's ability to convey heavier plates.

[0014] The beneficial effects of this utility model through the above technical solution are:

[0015] This utility model has a reasonable structural design. While the inner shaft and frame are fixed together with bolts, the outer cylinder can rotate relative to the inner shaft. The power source for the rotation of the outer cylinder is a power chain driving the transmission sprocket to rotate, combined with the friction between the friction plates and the retaining ring, thus achieving the rotation of the outer cylinder.

[0016] The retaining ring of this invention can slide elastically relative to the fixed plate, thereby ensuring a tight fit between the retaining ring and the friction plate and achieving friction transmission. Simultaneously, since the friction element is a ring composed of two fan-shaped rings, and the friction element is inserted into one end face of the transmission sprocket, the retaining ring can be forced to move towards the fixed plate by external force, allowing for convenient disassembly and replacement of the friction plate during this process.

[0017] When the plate is fully placed on the roller, the transmission sprocket drives the friction plate to rotate together. Relying on the tight friction between the friction plate and the retaining ring, the outer cylinder is driven to rotate, thus realizing the conveying of the plate. As the plate is slowly removed from the polishing equipment, the removed part will contact the roller and exert a certain pressure on the outer cylinder. In this case, the plate will drive the outer cylinder to rotate. There is a certain speed difference between the outer cylinder and the transmission sprocket, thereby avoiding sliding friction between the plate and the outer cylinder.

[0018] In order to improve the conveying capacity of the roller, this utility model arranges an adjustment component at one end of the inner shaft. By tightening the locking nut, the large compression spring is compressed, which in turn generates an axial force on the outer cylinder, increasing the friction between the friction plate and the retaining ring, ensuring the reliability of power transmission, and thus enabling the roller to transport heavier plates. Attached Figure Description

[0019] Figure 1 This is an overall cross-sectional view of a roller that uses sprocket friction to transmit power according to this utility model.

[0020] Figure 2 This is a schematic diagram of the assembly of a sprocket drive unit for a roller that uses sprocket friction to transmit power, according to this utility model.

[0021] Figure 3 This is a schematic diagram showing the disassembled sprocket drive unit of a roller that uses sprocket friction to transmit power according to this utility model.

[0022] Figure 4 This is a schematic diagram of an adjustment component for a roller that uses sprocket friction to transmit power according to this utility model.

[0023] The attached diagram is labeled as follows: 1 Outer cylinder, 2 Inner shaft, 3 Sprocket drive unit, 4 Drive sprocket, 41 Sprocket body, 42 Fixing ring, 5 Friction plate, 6 Retaining ring, 7 Rubber pad, 8 Fixing disc, 9 Bearing 1, 10 Threaded hole, 11 Bearing 2, 12 Bushing, 13 Insert block, 14 Insert hole, 15 Guide rod, 16 Guide hole, 17 Small compression spring, 18 Adjusting assembly, 181 Locking nut, 182 Large compression spring, 183 Flat washer. Detailed Implementation

[0024] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0025] like Figures 1-4As shown, a roller that uses sprocket friction to transmit power includes an outer cylinder 1, an inner shaft 2, and a sprocket drive unit 3. The outer cylinder 1 and the inner shaft 2 are two parts that can rotate relative to each other, and of course, they can also rotate together; the sprocket drive unit 3 is used to realize the relative rotation and joint rotation of the outer cylinder 1 and the inner shaft 2, which is similar to the principle of an accumulating roller.

[0026] The outer cylinder 1 is a hollow cylinder, and its outer surface is covered with a rubber pad 7 to prevent friction caused by direct hard contact between the plate and the outer cylinder 1. The rubber pad 7 directly contacts the plate, thereby reducing wear on the plate. Fixed plates 8 are provided at both ends inside the outer cylinder 1. The outer cylinder 1 is welded to the fixed plates 8. The fixed plates 8 are circular and have a central hole.

[0027] An inner shaft 2 passes between the two fixed disks 8, and the inner shaft 2 is rotatably connected to the fixed disks 8. Specifically, a bearing 9, which is a deep groove ball bearing, is installed between the fixed disks 8 and the inner shaft 2. During installation, the center hole of the fixed disk 8 is a stepped hole, which can limit the bearing 9. At the same time, a hollow elastic retaining ring is arranged in the center hole. The hollow elastic retaining ring, in conjunction with the stepped center hole, can prevent the bearing 9 from moving axially.

[0028] The inner shaft 2 is longer than the outer cylinder 1, which facilitates the installation of the roller on the frame of the roller conveyor using the inner shaft 2. The inner shaft 2 has threaded holes 10 at both ends, so that the inner shaft 2 can be fixed to the frame by connecting bolts through the frame and the threaded holes 10, thereby connecting and fixing the entire roller to the frame.

[0029] During installation, the sprocket drive unit 3 is installed at either end of the inner shaft 2. The sprocket drive unit 3 includes a drive sprocket 4, a friction element, and a retaining ring 6. The drive sprocket 4 is rotatably mounted at the end of the inner shaft 2. During installation, the drive sprocket 4 is sleeved on the inner shaft 2, and a bearing 11 is provided between the drive sprocket 4 and the inner shaft 2. The bearing 11 is a deep groove ball bearing, thus allowing the drive sprocket 4 to rotate freely on the inner shaft 2.

[0030] Unlike conventional sprockets, the transmission sprocket 4 here includes a sprocket body 41 and a retaining ring 42. The retaining ring 42 is set on one end face of the sprocket body 41. Bearings 11 are arranged inside both the sprocket body 41 and the retaining ring 42. The sprocket body 41 and the retaining ring 42 rotate together. The retaining ring 42 is a circular ring with a cross-section in the shape of "]". By using the retaining ring 42, the diameter of the end of the transmission sprocket 4 can be reduced and the area of ​​one end face of the transmission sprocket 4 can be increased.

[0031] A bushing 12 and a friction element are respectively fitted onto the inner shaft 2 on both sides of the transmission sprocket 4. The bushing 12 is threaded onto the inner shaft 2 and abuts tightly against the inner ring of the second bearing 11. Thus, the axial movement of the second bearing 11 can be restricted by the bushing 12 and the retaining ring 42. The friction element is installed on the transmission sprocket 4. To facilitate the installation and replacement of the friction element, the friction element is inserted into the transmission sprocket 4, that is, the friction element is inserted into the end face of the retaining ring 42, thus the friction element and the retaining ring 42 are detachably connected.

[0032] In this embodiment, the friction element is a ring formed by sequentially splicing together at least two friction plates 5. Specifically, there are two friction plates 5, each in a fan-shaped annular shape, which are joined together to form a circle. Each friction plate 5 is inserted into a fixing ring 42. Each friction plate 5 has two insertion holes 14. Four insertion blocks 13 are fixedly disposed on the end face of the fixing ring 42. The insertion blocks 13 are inserted into the insertion holes 14, and the length of the insertion blocks 13 is less than the depth of the insertion holes 14. Thus, the friction plate 5 is attached to the fixing ring 42 for installation, and the transmission sprocket 4 can drive the friction plate 5 to rotate together.

[0033] To prevent the friction plate 5 from detaching from the transmission sprocket 4, a retaining ring 6 is elastically slidably connected to the fixed disc 8. The retaining ring 6 is a circular ring that is sleeved on the inner shaft 2 and moves axially along the inner shaft 2. The retaining ring 6 and the friction plate 5 are in surface contact, and the retaining ring 6 presses the friction plate 5 together, thereby preventing the insertion hole 14 and the insertion block 13 from detaching. Both the retaining ring 6 and the friction plate 5 are arranged outside the outer cylinder 1. Specifically, the retaining ring 6 and the friction plate 5 are arranged at the position where the inner shaft 2 extends out of the outer cylinder 1, which facilitates manual operation of the retaining ring 6 and the friction plate 5.

[0034] During installation, the retaining ring 6 is provided with four cylindrical guide rods 15 circumferentially. The ends of the guide rods 15 are welded to the retaining ring 6 or threadedly connected to it. The guide rods 15 pass through the fixed plate 8 and are slidably connected to it. The fixed plate 8 has guide holes 16 for the guide rods 15 to pass through, and the guide holes 16 are stepped through holes. A small compression spring 17 is fitted on each guide rod 15 between the retaining ring 6 and the fixed plate 8. Under the force of the small compression spring 17, the retaining ring 6 moves away from the fixed plate 8, and the retaining ring 6 is always in close contact with the friction plate 5.

[0035] The principle of this invention is as follows: After the two ends of the inner shaft 2 are connected and fixed to the frame with bolts, the inner shaft 2 remains stationary. After the transmission sprocket 4 is connected to the power chain on the roller conveyor, it can drive the transmission sprocket 4 to rotate, and the friction plate 5 rotates along with it. Because the retaining ring 6 is in close contact with the friction plate 5, a certain frictional force is generated, which in turn drives the retaining ring 6 to rotate. The retaining ring 6 then drives the entire outer cylinder 1 to rotate, so that the outer cylinder 1 and the inner shaft 2 can rotate relative to each other.

[0036] In short, driven by the power chain and through the cooperation of the friction plate 5 and the retaining ring 6, the outer cylinder 1 can be controlled to operate, thereby conveying the plate material normally. To improve the reliability of power transmission, one end face of the retaining ring 6 has a textured surface to form a rough friction surface. The friction surface of the retaining ring 6 contacts the friction plate 5, increasing the friction between the friction plate 5 and the retaining ring 6, thus ensuring the stability of power transmission.

[0037] As the polishing sheet is moved out of the polishing equipment, the portion of the sheet that moves out presses against the outer cylinder 1, causing the outer cylinder 1 to rotate as the sheet moves out. Because the power is transmitted through friction, this does not affect the normal rotation of the drive sprocket 4. A speed difference is created between the drive sprocket 4 and the outer cylinder 1, thus ensuring that the sheet does not wear against the outer cylinder 1. Once the sheet is completely removed from the polishing equipment, the entire sheet is supported by the rollers, and the outer cylinder 1 resumes normal operation, with the drive sprocket 4 driving the outer cylinder 1 to transport the sheet.

[0038] After a long period of operation, the friction plate 5 needs to be replaced. When replacing it: stop the operation of the entire roller conveyor, and then manually push the retaining ring 6 inward to make the retaining ring 6 close to the fixed plate 8. The retaining ring 6 is no longer tightly engaged with the friction plate 5. Then remove the two friction plates 5 from the insert block 13, replace them with new friction plates 5 and install them with the insert block 13. Release the retaining ring 6. Under the action of the compression spring, the retaining ring 6 continues to be tightly engaged with the friction plate 5.

[0039] To optimize the product structure and enable the conveying of heavier plates, an adjustment assembly 18 is provided at one end of the inner shaft 2 opposite to the sprocket drive unit 3. That is, the adjustment assembly 18 and the sprocket drive unit 3 are respectively arranged at both ends of the inner shaft 2. The adjustment assembly 18 includes a locking nut 181 and a large compression spring 182. The locking nut 181 is threaded to the end of the inner shaft 2, and the large compression spring 182 is sleeved on the inner shaft 2 between the locking nut 181 and the fixed disc 8. A flat washer 183 is sleeved on the inner shaft 2 at one end of the locking nut 181, and one end of the large compression spring 182 abuts against the flat washer 183, while the other end abuts against the inner ring of the bearing 9.

[0040] When the locking nut 181 is tightened, the large compression spring 182 tends to compress. The large compression spring 182 can provide the outer cylinder 1 to press against the friction plate 5, that is, the outer cylinder 1 tends to get closer to the friction plate 5. Consequently, the small compression spring 17 will also be compressed, and the contact pressure between the retaining ring 6 and the friction plate 5 will increase, preventing slippage between the retaining ring 6 and the friction plate 5, so as to carry heavier plates for conveying.

[0041] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A roller utilizing sprocket friction to transmit power, characterized by, The utility model provides a kind of chain wheel transmission unit, including outer tube (1), inner shaft (2) and chain wheel transmission unit (3), the inner end of the outer tube (1) is equipped with fixed disc (8), the inner shaft (2) is passed between the two fixed discs (8), and the inner shaft (2) and fixed disc (8) are rotatably connected. The inner shaft (2) is equipped with the chain wheel transmission unit (3) at any end, and the chain wheel transmission unit (3) includes transmission sprocket (4), friction piece and retaining ring (6), the transmission sprocket (4) is rotatably arranged at the end of the inner shaft (2), the inner shaft (2) on both sides of the transmission sprocket (4) is respectively sleeved with shaft sleeve (12) and the friction piece, the friction piece is inserted with the transmission sprocket (4), and the friction piece is at least two friction plates (5) sequentially spliced into a circular ring body. The fixed disc (8) is elastically slidably connected with the retaining ring (6), the retaining ring (6) is sleeved on the inner shaft (2) and moves along the axial direction of the inner shaft (2), the retaining ring (6) is in surface contact with the friction plate (5), and the retaining ring (6) and the friction plate (5) are arranged outside the outer tube (1).

2. A roller using a sprocket to transfer power by friction according to claim 1, wherein The outer tube (1) is a hollow cylinder, and the outer surface of the outer tube (1) is covered with a rubber pad (7). The outer tube (1) is welded to the fixed disc (8). The fixed disc (8) is a circular ring body. A bearing (9) is arranged between the fixed disc (8) and the inner shaft (2). The length of the inner shaft (2) is greater than the length of the outer tube (1). The center of both ends of the inner shaft (2) has a threaded hole (10).

3. A roller according to claim 1, wherein The transmission sprocket (4) is sleeved on the inner shaft (2) and is provided with a bearing (11) between the inner shaft (2). The transmission sprocket (4) includes a sprocket body (41) and a fixed ring (42). The sprocket body (41) is provided with the fixed ring (42) on one end face. The fixed ring (42) is a circular ring body with a cross-section in the shape of "]. The fixed ring (42) is inserted with the friction piece on the end face.

4. A roller according to claim 3, wherein The number of the friction plates (5) is two. The friction plates (5) are fan ring-shaped. Two friction plates (5) are combined in a circular shape. An insertion hole (14) is formed in each friction plate (5). An insertion block (13) is arranged on the end face of the fixed ring (42). The insertion block (13) is inserted into the insertion hole (14). The length of the insertion block (13) is less than the depth of the insertion hole (14). The retaining ring (6) compresses the friction plate (5).

5. A roller according to claim 1, wherein The retaining ring (6) is a circular ring body. One end face of the retaining ring (6) has concave-convex textures to form a rough friction surface. The friction surface of the retaining ring (6) is in contact with the friction plate (5). A plurality of guide rods (15) are arranged on the retaining ring (6) in the circumferential direction. The guide rods (15) penetrate into the fixed disc (8) and are slidably connected with the fixed disc (8). A small compression spring (17) is sleeved on each guide rod (15) between the retaining ring (6) and the fixed disc (8).

6. A roller according to claim 1, wherein One end of the inner shaft (2) opposite to the chain wheel transmission unit (3) is provided with an adjusting assembly (18). The adjusting assembly (18) includes a locking nut (181) and a large compression spring (182). The locking nut (181) is threadedly connected to the end of the inner shaft (2). The large compression spring (182) is sleeved on the inner shaft (2) between the locking nut (181) and the fixed disc (8).

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