Self-correcting and self-aligning sensing roller and horizontal returning type self-correcting device

Abstract

The utility model discloses a self-correcting and self-aligning sensing roller and a horizontal returning type self-correcting device, and belongs to the technical field of conveying belt correcting devices of belt conveyors. The sensing device comprises a swing roller assembly, a sensing roller, a framework bearing, sealing devices and end covers, the swing roller assembly is arranged in the sensing roller through the framework bearing, the sealing devices are arranged at the two ends of the sensing roller, and the end covers are arranged on the surface of the swing roller assembly in a sleeving mode and fastened at the two ends of the sensing roller. Stable sealing is built between the sensing roller and the swing roller assembly through the sealing device to block external water and dust, the sealing device is stabilized through the end cover, a rotary sealing cabin is built, and temperature rise caused by running friction of the sensing roller is reduced; through the ingenious design of the end covers, heat exchange can be rapidly conducted between the end covers and the end sealing cabin, carrier roller temperature rise caused by running friction of aligning sensing roller end sealing cabin equipment is effectively restrained, long-term performance stability of the equipment is kept, and belt deviation transverse displacement can be controlled within the range of + / -22 mm.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt deviation rectifying devices for belt conveyors, and particularly relates to a self-correcting and centering sensing roller and a flat-return type self-correcting device. Background Technique

[0002] As a machine for continuously conveying solid materials, belt conveyors have been widely used in industries such as energy, metals, and ports. During the operation of the conveyor, due to the action of various eccentric forces, the conveyor belt is prone to deviation, resulting in a series of production problems such as wear, tearing of the conveyor belt edge, and damage to the support, increasing the technical maintenance time and directly affecting the production efficiency and operating cost of the system equipment. Therefore, effective technical measures must be taken to prevent and correct the deviation of the conveyor belt.

[0003] Currently, the most commonly used method is to use idlers, but the disadvantages of various belt deviation rectifying devices on the market are gradually emerging, mainly manifested in: slow deviation rectifying response speed, unreasonable structure, vulnerable to on-site working conditions interference; high operating temperature of the idler, easy aging of the seal, easy jamming and failure of the roller bearing, jamming of the rotating shaft, deviation rectifying failure, easy damage to the conveyor belt edge; oil leakage polluting the site, loss of oil, failure of the sealing effect, poor dust and waterproof effect, requiring frequent maintenance; obvious deviation rectifying effect, poor versatility, requiring frequent adjustment or replacement of the deviation rectifying device, etc., which cannot meet the performance requirements of the equipment under working conditions, thus greatly affecting production. Content of the Utility Model

[0004] In view of the problems mentioned in the background technique, the utility model provides a self-correcting and centering sensing roller and a flat-return type self-correcting device, which use the roller to sense the deviation trend of the conveyor belt to perform advanced correction of the conveyor belt. By sensing the imbalance of the friction forces at both ends of the roller caused by the deviation of the conveyor belt on the sensing roller, the reaction force of the unbalanced friction force is used to realize automatic deviation rectification and correction of the conveyor belt to run in the middle in real time; the utility model can control the lateral displacement of the belt deviation within the range of ±22 mm, and has the advantages of fast response, simple installation, good versatility, maintenance-free, and long service life.

[0005] Technical Solution: To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] A self-correcting and centering sensing roller includes a swing roller assembly, a sensing roller, a frame bearing, a sealing device, and an end cover. The swing roller assembly is arranged in the sensing roller through the frame bearing. The sealing device is arranged at both ends of the sensing roller. The end cover is sleeved on the surface of the swing roller assembly and fastened at both ends of the sensing roller.

[0007] Preferably, the swing roller assembly includes a carrying roller, a pivot shaft, a roller shaft and a pivot seat; the roller shaft is disposed through the center of the carrying roller, the pivot shaft is arranged between the roller shaft and the carrying roller, and one end of the pivot shaft is connected to the roller shaft through a bearing set, and the other end is connected to the carrying roller through the pivot seat.

[0008] Preferably, the sensing roller is fixedly arranged on the carrying roller through a structural bearing, the sensing roller is covered with rubber, and diamond-patterned taper rollers are arranged at both ends of the surface of the sensing roller.

[0009] Preferably, the sealing device includes a lip seal, a labyrinth seal and a partition seal; the lip seal is arranged on one side of the end cover, the labyrinth seal is arranged between the structural bearing and the lip seal, and the partition seal is arranged on one side of the structural bearing.

[0010] Preferably, the rotary seal chamber includes an end seal chamber and an inner seal chamber; the partition seal, the carrying roller and the sensing roller form the inner seal chamber, and the lip seal and the partition seal form the end seal chamber.

[0011] Preferably, the end cover is a duct end cover, and centripetal or eccentric ducts are evenly distributed along the circumference on the outside of the duct end cover.

[0012] Preferably, the end cover is a ribbed blade end cover, and centripetal or eccentric ribbed blades are evenly distributed along the circumference on the outside of the ribbed blade end cover.

[0013] A flat-return self-correcting device uses the above self-correcting and centering sensing roller, and includes a self-correcting and centering sensing roller, a roller shaft sleeve, a fixing frame and a belt conveyor girder; the roller shaft sleeve is arranged on the roller shaft and is connected to the fixing frame, and the fixing frame is installed on the belt conveyor girder.

[0014] Preferably, multiple groups of holes are provided on the fixing frame.

[0015] Advantageous effects: Compared with the prior art, the present invention has the following advantages:

[0016] (1) The self-correcting and centering sensing roller assembly of the belt conveyor of the present invention provides a method for correcting deviation with very small friction and a deviation correction mechanism that does not rely on the edge of the conveyor belt to start. It eliminates the wear of the edge of the conveyor belt, reduces the damage of the conveyor belt support, and effectively prevents problems such as longitudinal tearing of the conveyor belt. It can be used in cooperation with the carrying roller frame at the work site without making another carrying roller frame (swing frame), and has good versatility.

[0017] (2) The utility model has an ingenious seal system design, with good dust-proof, waterproof, wear-resistant and pressure-resistant functions. It does not require the addition of any oil or grease, eliminating the phenomenon of seal failure due to oil loss in the past. It can adapt to harsh environments, work under various working conditions, have no vibration during rotation, and has good maintenance-free characteristics. The sealed bearing and the anti-jamming central pivot system design greatly increase the safe and stable operation time of the equipment, and effectively prevent the overflow and scattering of materials while improving the conveying capacity.

[0018] (3) Through the ingenious end cover duct design of the utility model, the roller cover and the end seal chamber can quickly conduct heat exchange, effectively suppressing the temperature rise of the idler caused by the running friction of the centering sensing roller end seal chamber equipment, maintaining the long-term stable performance of the equipment, and extending the service life of the equipment.

[0019] (4) The use of the outer surface coated with wear-resistant rubber (or polyurethane material) in the utility model increases the traction of the conveyor belt, completely solving the problem of automatic deviation correction failure. The highly efficient and sensitive tracking centering technology has few manufacturing parts and is simple and fast to install. The safe and durable structure design and process material selection can effectively avoid the occurrence of production and personal accidents.

[0020] (5) The utility model can control the lateral displacement of belt deviation within the range of ±22 mm, and has the advantages of fast response, simple installation, good versatility, maintenance-free, and long-term durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the self-correcting centering sensing roller of the utility model;

[0022] Figure 2 is a schematic structural diagram of the duct end cover of the utility model;

[0023] Figure 3 is a front view of the duct end cover of the utility model, where (a) is a schematic diagram of the duct end cover of the centripetal duct, and (b) is a schematic diagram of the duct end cover of the eccentric duct;

[0024] Figure 4 is a schematic structural diagram of the ribbed blade end cover of the utility model;

[0025] Figure 5 is a front view of the ribbed blade end cover of the utility model, where (a) is a schematic diagram of the ribbed blade end cover of the centripetal duct, and (b) is a schematic diagram of the ribbed blade end cover of the eccentric duct;

[0026] Figure 6 is a schematic structural diagram of the flat return type self-correcting device of the utility model;

[0027] Figure 7 is a side view of the flat return type self-correcting device of the utility model. DETAILED DESCRIPTION OF THE INVENTION

[0028] The present utility model will be further illustrated below in conjunction with specific embodiments. The embodiments are implemented on the premise of the technical solution of the present utility model. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model.

[0029] As Figure 1-7 shown, the self-correcting centering sensing roller provided in this embodiment mainly includes a swing roller assembly 1, a sensing roller 2, a frame bearing 3, a sealing device 4 and an end cover 5.

[0030] As Figure 1 shown, the swing roller assembly 1 includes a carrier roller 6, a pivot shaft 9, a roller shaft 7 and a pivot seat 10; the roller shaft 7 is disposed through the center of the carrier roller 6, and a pivot shaft 9 is provided between the roller shaft 7 and the carrier roller 6, and the pivot shaft 9 is located in the middle position between the roller shaft 7 and the carrier roller 6. One end of the pivot shaft 9 is connected to the roller shaft 7 through a bearing group 11, and is limited and rotated through the bearing group 11, and the other end is connected to the carrier roller 6 through the pivot seat 10; this not only ensures that the roller shaft 7 is at the center of the carrier roller 6, but also enables the carrier roller 6 to swing horizontally left and right around the pivot shaft 9, which is the basis of the centering mechanism.

[0031] The sensing roller 2 is fixedly arranged on the carrier roller 6 of the swing roller assembly 1 through the frame bearing 3. The sensing roller 2 is covered with wear-resistant rubber, and diamond pattern tapered rollers 12 are arranged at both ends of the surface of the sensing roller 2 to change the magnitude and direction of the friction force between the rubber roller and the conveyor belt.

[0032] Sealing devices 4 are respectively arranged at both ends of the sensing roller 2. The sealing device 4 includes a lip seal 41, a labyrinth seal 42 and a partition seal 43.

[0033] The lip seal 41 is arranged deep in the reverse side of the end cover 5. The inner lip is sleeved on the surface of the carrier roller 6, and a dynamic and static seal is formed at the contact surface of the carrier roller 6 as the sensing roller 2 rotates, mainly for waterproofing and dustproofing externally; the labyrinth seal 42 is arranged between the frame bearing 3 and the lip seal 41, and is limited and fixed by the end cover 5. As the sensing roller 2 rotates, several air cyclone compartments are formed between the frame bearing 3 and the lip seal 41 for secondary dustproofing and dust blocking to protect the frame bearing 3 from dust invasion and resulting in a decline in rolling performance or functional failure and jamming; the partition seal 43 is arranged outside the frame bearing 3, and is fixed by compressing the outer edge seal by the bearing outer ring of the frame bearing 3. The inner edge seal is sleeved on the surface of the carrier roller 6, and a dynamic and static seal is formed at the contact surface of the carrier roller 6 as the sensing roller 2 rotates, mainly to prevent the sealing performance of the lip seal 41 from failing and water directly soaking into the other end frame bearing 3 of the sensing roller 2, resulting in a decline in its rolling performance or functional failure and jamming, which directly affects the centering and self-correcting performance and efficacy of the sensing roller.

[0034] In this embodiment, the lip seal 41 is made of polycarbon fiber material, and the labyrinth seal 42 and the partition seal 43 are made of nylon material.

[0035] In this embodiment, the sealing device 4 is made of new process materials, having excellent dust and water protection, wear and pressure resistance functions (wear resistance over 45,000 hours and pressure resistance not less than 1 Mpa), as well as advanced and comprehensive precision machining technology for the roller sleeve. After product assembly, a stable seal is established between the sensing roller 2 and the supporting roller 6 to block external water and dust, ensuring the long-term normal operation of the bearings; no oil or grease needs to be added, eliminating the phenomenon of seal failure due to lack of oil or grease, being able to adapt to various harsh environments, being durable and maintenance-free.

[0036] As Figure 1-5 shown, the middle of the end cover 5 is a through hole, sleeved on the outer wall of the supporting roller 6 and fastened to the end face of the sensing roller 2, used to stabilize the sealing device 4, specifically to stabilize the lip seal 41 and the labyrinth seal 42 of the sealing device 4. A sealed chamber is formed between the lip seal 41 and the partition seal 43 on the tube walls of the sensing roller 2 and the supporting roller 6, that is, the combination of the lip seal 41 and the partition seal 43 forms the end sealed chamber 81, with a total of two chambers respectively arranged in the two end regions of the sensing roller 2; the combination between the two partition seals 43 forms the inner sealed chamber 82, with one chamber arranged in the middle region of the sensing roller 2, thus forming a three-chamber isolation and rotation sealing chamber 8 with balanced internal pressure, and the sensing roller 2 assembly has the function of dust and water protection.

[0037] As Figure 2 、 3 shown, the end cover 5 is a duct end cover, and centripetal or eccentric ducts 51 are evenly distributed circumferentially on the outside of the duct end cover. When the sensing roller 2 rotates, the gas in all the ducts 51 on the duct end cover is continuously circulated and thrown out, enabling rapid heat exchange between the duct end cover and the end sealed chamber 81, suppressing the temperature rise caused by the friction of the equipment operation in the end sealed chamber 81 of the sensing roller 2 (temperature drop not less than 20 °C), ensuring that the lubricating grease of the structure bearing 3 is not liquefied or atomized at high temperature during long-term operation, thus avoiding the situation of loss of metal lubrication function, resulting in jamming or damage to the rotation and swing of the self-aligning sensing roller assembly; at the same time, ensuring that the elastic sealing device 4 does not age rapidly in a long-term high-temperature environment, the sealing performance fails, and the dust and water protection function of the self-aligning sensing roller assembly is lost, shortening the service life.

[0038] As Figure 4 、 5 shown, the end cover 5 is a rib leaf end cover, and centripetal or eccentric rib leaves 52 are evenly distributed circumferentially on the outside of the rib leaf end cover. The rib leaves 52 protrude from the end cover 5 surface into rectangular strips, and after even distribution, they form swing wind blades and are also heat sinks; when the sensing roller 2 rotates, the fan blades formed by the rib leaf end cover continuously stir and scatter the air, enabling rapid heat exchange between the rib leaf end cover and the end sealed chamber 81, effectively suppressing the temperature rise caused by the friction of the equipment operation in the end sealed chamber 81 of the sensing roller 2; ensuring that the lubricating grease of the structure bearing 3 is not liquefied or atomized as a whole and the lubrication fails, and the sealing device 4 does not age due to long-term high temperature, ensuring that the sensing roller 2 runs with low noise, the swing roller has flexible self-alignment, the dust and water protection sealing performance is long-term intact, the sensing roller 2 has a long service life, and truly realizes maintenance-free operation.

[0039] The ingenious design and application of the above end cap 5 ensure that the centering sensing roller assembly runs with low noise, has flexible swing centering, long-term perfect dust and waterproof sealing performance, long service life, and can achieve true maintenance-free operation.

[0040] When the above self-correcting centering sensing roller assembly works in combination with matching components, it does not require any power source and is applicable to the deviation correction of various conveyor belt working sections.

[0041] Such as Figure 6 、 7 As shown, the flat return type self-correcting device provided in this embodiment is realized by using the above self-correcting centering sensing roller. The main structure includes a self-correcting centering sensing roller, a roller shaft sleeve 13, a fixed frame 14, and a belt conveyor girder 15. The roller shaft sleeve 13 is arranged on the roller shaft 7 and is connected to the fixed frame 14. The fixed frame 14 is provided with multiple groups of holes, and the roller shaft sleeve 13 is installed on the fixed frame 14 with holes through fasteners. The roller shaft sleeve 13 can be adjusted up and down on the fixed frame 14 to keep a certain tension between the rubber-coated surface of the centering sensing roller assembly and the contact surface of the conveyor belt, ensuring the magnitude and direction of the friction force required for the centering operation of the sensing roller assembly and realizing automatic deviation correction. The fixed frame 14 is installed on the belt conveyor girder 15.

[0042] After the flat return type self-correcting device in this embodiment is assembled, it is suitable for one-way or two-way transportation return surface belts (or flat load-bearing belts), has good automatic deviation correction effect, high sensitivity, strong adaptability, dust and waterproof, does not require external intervention, and hardly needs maintenance, and is durable.

[0043] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A self-correcting and centering sensing roller, comprising a swing roller assembly (1), a sensing roller (2), a frame bearing (3), a sealing device (4) and an end cover (5), characterized in that: The swing roller assembly (1) is arranged inside the sensing roller (2) through the frame bearing (3). The sealing device (4) is arranged at both ends of the sensing roller (2). The end covers (5) are sleeved on the surface of the swing roller assembly (1) and fastened to both ends of the sensing roller (2).

2. The self-correcting and centering sensing roller according to claim 1, wherein: The swing roller assembly (1) includes a supporting roller (6), a pivot shaft (9), a roller shaft (7) and a pivot seat (10). The roller shaft (7) is arranged through the center of the supporting roller (6). The pivot shaft (9) is arranged between the roller shaft (7) and the supporting roller (6). One end of the pivot shaft (9) is connected to the roller shaft (7) through a bearing set (11), and the other end is connected to the supporting roller (6) through the pivot seat (10).

3. The self-correcting and centering sensing roller according to claim 2, wherein: The sensing roller (2) is fixedly arranged on the supporting roller (6) through the frame bearing (3). The outer surface of the sensing roller (2) is covered with rubber, and diamond-patterned taper rollers (12) are arranged at both ends of the surface of the sensing roller (2).

4. The self-correcting and centering sensing roller according to claim 1, wherein: The sealing device (4) includes a lip seal (41), a labyrinth seal (42) and a partition seal (43). The lip seal (41) is arranged on one side of the end cover (5). The labyrinth seal (42) is arranged between the frame bearing (3) and the lip seal (41). The partition seal (43) is arranged on one side of the frame bearing (3).

5. The self-correcting and centering sensing roller according to claim 4, wherein: The rotary sealing chamber (8) includes an end sealing chamber (81) and an inner sealing chamber (82). The partition seal (43) and the supporting roller (6) and the sensing roller (2) form the inner sealing chamber (82). The lip seal (41) and the partition seal (43) form the end sealing chamber (81).

6. The self-correcting and centering sensing roller according to claim 1, wherein: The end cover (5) is a duct end cover, and centripetal or eccentric ducts (51) are evenly distributed along the circumferential direction on the outside of the duct end cover.

7. The self-correcting and centering sensing roller according to claim 1, wherein: The end cover (5) is a rib blade end cover, and centripetal or eccentric rib blades (52) are evenly distributed along the circumferential direction on the outside of the rib blade end cover.

8. A flat-return self-correcting device that uses the self-correcting and centering sensing roller described in any one of claims 1-7, characterized in that: It includes a self-correcting and aligning sensing roller, a roller shaft sleeve (13), a fixing frame (14) and a belt conveyor girder (15). The roller shaft sleeve (13) is arranged on the roller shaft (7) and connected to the fixing frame (14). The fixing frame (14) is installed on the belt conveyor girder (15).

9. The flat-return self-correcting device according to claim 8, characterized in that: Multiple groups of holes are provided on the fixing frame (14).

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