Electric roller conveying device

Abstract

An electric roller conveying device relates to the field of mining electric conveying rollers and comprises a roller assembly and a roller wall cooling mechanism arranged in the roller assembly, the roller assembly comprises a roller wall, a backflow groove is formed in the inner wall of the roller wall, end discs are arranged at the two ends of the roller wall respectively, and the roller wall cooling mechanism is arranged on the roller wall. The roller wall cooling mechanism comprises a spraying assembly, an oil return pump, an oil feeding pump and a cooling tank, the spraying assembly is arranged on the inner wall of the roller wall, the oil return pump is arranged at the oil outlet end of the backflow tank, the oil feeding pump is arranged at the oil inlet end of the backflow tank, and the cooling tank is arranged between the oil return pump and the oil feeding pump. Heat conduction oil fluid is directly sprayed into the roller assembly, directly absorbs heat in the roller, uniformly flows in the backflow groove and circulates out, and the heat conduction oil fluid is circularly transmitted inside and outside the roller through the oil feeding pump and the oil returning pump, so that heat dissipation of the roller wall is sufficient and stable, and high-speed rotation of the roller is not affected; and the internal and external sealing performance of the roller is ensured.

Description

Technical Field

[0001] This invention relates to the field of electric conveyor rollers for mining, and more particularly to an electric roller conveyor device. Background Technology

[0002] As a core component of the mine transportation system, the performance of electric rollers directly affects the efficiency and safety of mine operations. Existing electric rollers generally employ a built-in motor structure, integrating the drive motor inside the roller body, allowing heat exchange with the external environment through the roller wall.

[0003] However, this design has significant drawbacks: because the motor is completely enclosed inside the roller, and the mining environment presents complex conditions such as high dust, high humidity, and temperature fluctuations, the heat generated by the motor is difficult to dissipate effectively through traditional natural cooling methods. Especially during continuous heavy-load operations, the motor winding temperature continues to rise, easily leading to problems such as insulation aging and bearing lubrication failure, resulting in an increased equipment failure rate. Some improvement solutions attempt to add heat dissipation holes or fins to the cylinder, but due to the sealing requirements of mining equipment, dust can easily enter the motor through the heat dissipation channels, exacerbating the wear of electrical components and creating a contradiction between heat dissipation and protection. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this invention is to provide an electric roller conveyor device that provides sufficient and stable heat dissipation, stable fluid transmission, and does not affect the high-speed rotation of the roller.

[0006] To achieve the above objectives, the present invention proposes an electric roller conveyor device, comprising a roller assembly and a roller wall cooling mechanism disposed inside the roller assembly. The roller assembly includes a roller wall, the inner wall of which is provided with a return groove, and end plates are respectively disposed at both ends of the roller wall. The roller wall cooling mechanism includes a spray assembly, a return oil pump, a delivery oil pump, and a cooling tank. The spray assembly is disposed on the inner wall of the roller wall, the return oil pump is disposed at the oil outlet end of the return groove, the delivery oil pump is disposed at the oil inlet end of the return groove, and the cooling tank is disposed between the return oil pump and the delivery oil pump.

[0007] Furthermore, a drive motor is installed inside the roller wall, and a reducer is installed on the drive motor. The output shaft of the reducer is connected to one of the end plates. A left support arm and a right support arm are respectively installed on both sides of the roller assembly. A drive support assembly is installed on the left support arm to support the drive motor, including a fixed shaft and a motor base. One end of the fixed shaft is connected to the left support arm, and the motor base is located at the other end of the fixed shaft. The drive motor is mounted on the motor base.

[0008] Furthermore, the diameter of the oil outlet end of the reflux trough is larger than the diameter of the oil inlet end, and a sedimentation tank is provided at the oil outlet end of the reflux trough, which is located on the inner wall of the roller wall.

[0009] Furthermore, a back suction pipe is provided inside the sedimentation tank, with an elbow at the bottom of the back suction pipe and a back suction nozzle at the end of the elbow. The back suction nozzle is adapted to the sedimentation tank, and the height of the back suction nozzle is lower than the upper surface of the sedimentation tank.

[0010] Furthermore, an oil return pipe is provided at the top of the suction pipe, the oil return pipe passes through the fixed shaft and is connected to the oil return pump, and a filter is provided between the oil return pump and the cooling tank.

[0011] Furthermore, the spray assembly includes spray pipes and a distributor. Multiple spray pipes are provided and distributed at equal intervals on the inner wall of the return tank. The branch ends of the distributor are respectively connected to the oil inlet ends of the spray pipes. Spray nozzles are provided on the spray pipes. A sealed bearing is provided at the oil inlet end of the distributor. A commutator is provided at the other end of the sealed bearing. The commutator is connected to the oil pump.

[0012] Furthermore, the branch end of the distributor is provided with a connector, and the oil inlet end of the spray pipe is provided with a hose, the hose and the connector being compatible with each other.

[0013] Furthermore, a heat-conducting cover is provided on the exterior of both the reducer and the drive motor, and the heat-conducting cover is connected to the motor base.

[0014] Furthermore, a rotating shaft is rotatably mounted on the right support arm, one end of which is fixedly connected to the end plate. The commutator is located inside the right support arm, the sealed bearing is mounted on the rotating shaft, and an oil valve is also mounted on the oil pump.

[0015] Furthermore, a base is provided between the left support arm and the right support arm, the cooling groove is located inside the base, and a heat sink is provided on the upper surface of the cooling groove, with the heat sink located below the roller assembly.

[0016] Beneficial effects: This invention uses heat-conducting oil fluid to be directly sprayed into the inside of the roller assembly. The heat-conducting oil fluid directly absorbs heat from the inside of the roller. The heat-conducting oil flows evenly in the return groove and circulates out. Furthermore, the heat-conducting oil fluid is circulated inside and outside the roller through the oil supply pump and the oil return pump, which makes the heat dissipation of the roller wall sufficient and stable, does not affect the high-speed rotation of the roller, and ensures the sealing of the inside and outside of the roller.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of an electric roller conveyor according to an embodiment of the present invention; Figure 2 This is a partial front sectional view of an electric roller conveyor according to an embodiment of the present invention; Figure 3 This is a partial front sectional view of an electric roller conveyor according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the return suction pipe in an electric roller conveyor according to an embodiment of the present invention.

[0019] As shown in the figure: 11. Left support arm; 12. Right support arm; 13. Drive support assembly; 131. Fixed shaft; 132. Motor base; 133. First bearing; 134. Rotating shaft; 135. Second bearing; 2. Roller assembly; 21. Roller wall; 22. End plate; 23. Sedimentation tank; 24. Return tank; 3. Cylinder wall cooling mechanism; 31. Return oil pump; 311. Return oil pipe; 32. Filter; 33. Cooling tank; 3 31. Heat sink; 34. Oil pump; 341. Oil valve; 35. Reversing device; 351. Sealed bearing; 36. Spray assembly; 361. Flow divider; 362. Connector; 363. Hose; 364. Spray pipe; 365. Nozzle; 366. Branch pipe; 37. Heat conduction cover; 38. Back suction pipe; 381. Elbow; 382. Back suction nozzle; 4. Base; 5. Drive motor; 6. Reducer; 61. Drive shaft. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] The electric roller conveyor of the present invention will now be described with reference to the accompanying drawings.

[0022] like Figures 1-4 As shown, the electric roller conveyor provided in this embodiment of the invention includes a roller assembly 2 and a roller wall cooling mechanism 3 disposed inside the roller assembly 2.

[0023] The roller assembly 2 includes a roller wall 21, the inner wall of which is provided with a return groove 24, and end plates 22 are respectively provided at both ends of the roller wall 21 for sealing and protecting the two ends of the roller wall 21 and for limiting the transmission of the two sides of the conveyor belt.

[0024] A drive motor 5 is installed inside the roller wall 21, and a reducer 6 is installed on the drive motor 5. The output shaft of the reducer 6 is connected to one of the end plates 22. A left support arm 11 and a right support arm 12 are respectively provided on both sides of the roller assembly 2. A drive support assembly 13 is provided on the left support arm 11 to support the drive motor 5. It includes a fixed shaft 131 and a motor base 132. One end of the fixed shaft 131 is connected to the left support arm 11, and the motor base 132 is located at the other end of the fixed shaft 131. The drive motor 5 is mounted on the motor base 132.

[0025] The cylinder wall cooling mechanism 3 includes a spray assembly 36, a return oil pump 31, a delivery oil pump 34, and a cooling tank 33. The spray assembly 36 is disposed on the inner wall of the roller wall 21, the return oil pump 31 is disposed at the oil outlet end of the return trough 24, the delivery oil pump 34 is disposed at the oil inlet end of the return trough 24, and the cooling tank 33 is disposed between the return oil pump 31 and the delivery oil pump 34.

[0026] Specifically, in use, the electric roller conveyor of this application involves placing a conveyor belt around the outside of the roller wall 21. The roller assembly 2 is driven by a built-in drive motor 5, which in turn drives a reducer 6. The reducer 6 transmits kinetic energy through its output shaft to rotate the end plate 22 at one end of the roller wall 21, thereby causing the roller assembly 2 to rotate. The drive motor 5 and the reducer 6 are fixedly connected to the left support wall outside the roller assembly 2 via a fixed shaft 131, allowing the roller assembly 2 to rotate effectively relative to the drive motor 5. The two ends of the roller assembly 2 rotate on the left support arm 11 and the right support arm 12.

[0027] When the drive motor 5 and reducer 6 operate, they generate heat. The cylinder wall cooling mechanism 3 directly sprays heat-conducting oil into the inside of the roller assembly 2. During this process, the heat-conducting oil in the cooling tank 33 is sent to the spray assembly 36 via the oil pump 34. The spray assembly 36 directly sprays the heat-conducting oil onto the surfaces of the drive motor 5 and reducer 6, directly absorbing the heat generated by the drive motor 5 and reducer 6. The heat-conducting oil then enters the return tank 24, where it flows evenly and circulates, absorbing and transferring heat from the roller wall 21. The flow of the heat-conducting oil in the return tank 24 ensures sufficient and stable heat dissipation from the roller wall 21, allowing the heat-conducting oil to flow stably even when the roller assembly 2 is rotating at high speed. Subsequently, the hot heat-conducting oil is discharged back into the cooling tank 33 via the return oil pump 31, where it is cooled and recycled again. This ensures uniform heat dissipation of the roller assembly 2 and heat dissipation of the drive motor 5 and reducer 6, guaranteeing their stable operation.

[0028] In one embodiment of the present invention, such as Figure 2 and Figure 3As shown, the diameter of the oil outlet end of the reflux trough 24 is larger than the diameter of the oil inlet end. A sedimentation trough 23 is provided at the oil outlet end of the reflux trough 24, and the sedimentation trough 23 is located on the inner wall of the roller wall 21. A back suction pipe 38 is provided inside the sedimentation trough 23. An elbow 381 is provided at the bottom of the back suction pipe 38, and a back suction nozzle 382 is provided at the end of the elbow 381. The back suction nozzle 382 is adapted to the sedimentation trough 23, and the height of the back suction nozzle 382 is lower than the upper surface of the sedimentation trough 23 to ensure that the heat transfer oil in the sedimentation trough 23 can be fully transferred and recovered.

[0029] Specifically, when the roller assembly 2 rotates at high speed, the spray assembly 36 sprays the heat transfer oil onto the surfaces of the drive motor 5 and the reducer 6. The heat transfer oil then falls onto the inner wall of the roller wall 21 due to gravity. At this time, the heat transfer oil is evenly adsorbed onto the inner wall of the roller wall 21 by the centrifugal force of the rotation of the roller assembly 2. Since the diameter of the oil outlet end of the return trough 24 is larger than the diameter of the oil inlet end, the centrifugal force of the heat transfer oil is subjected to a leftward component, causing the heat transfer oil to move continuously to the left. Therefore, the heat of the roller wall 21 can be evenly absorbed and transferred from right to left. Finally, the heat transfer oil will enter the sedimentation tank 23 on the far left of the return trough 24. The heat transfer oil in the sedimentation tank 23 flows back to the return oil pump 31 through the return suction nozzle 382 at the bottom of the return suction pipe 38 for use.

[0030] In one embodiment of the present invention, such as Figure 3 As shown, a return oil pipe 311 is provided at the top of the return suction pipe 38. The return oil pipe 311 passes through the fixed shaft 131 and is connected to the return oil pump 31, effectively transferring the heat transfer oil in the roller wall 21 to the return oil pump 31. A filter 32 is provided between the return oil pump 31 and the cooling tank 33 to filter the heat transfer oil in a timely manner.

[0031] In one embodiment of the present invention, such as Figure 3 As shown, the spray assembly 36 includes spray pipes 364 and a distributor 361. Multiple spray pipes 364 are provided and are distributed at equal intervals on the inner wall of the return trough 24. The branch ends of the distributor 361 are connected to the oil inlet ends of the spray pipes 364 respectively. Spray nozzles 365 are provided on the spray pipes 364. A sealed bearing 351 is provided at the oil inlet end of the distributor 361. A commutator 35 is provided at the other end of the sealed bearing 351. The commutator 35 is connected to the oil pump 34.

[0032] Specifically, during the spraying of heat transfer oil, the oil pump 34 transfers the heat transfer oil in the cooling tank 33 to the commutator 35. The commutator 35 sends the heat transfer oil through the sealed bearing 351 to the rotating distributor 361. The distributor 361 evenly transfers the heat transfer oil to each spray pipe 364, and then sprays it out through the nozzle 365 to the surface of the drive motor 5 and the reducer 6.

[0033] In one embodiment of the present invention, such as Figure 3As shown, the branch end of the distributor 361 is provided with a connector 362, and the oil inlet end of the spray pipe 364 is provided with a hose 363. The hose 363 and the connector 362 are compatible with each other, which facilitates the stable connection between the spray pipe 364 and the distributor 361 and facilitates the maintenance and replacement of the spray pipe 364.

[0034] In one embodiment of the present invention, such as Figure 3 As shown, a heat-conducting cover 37 is provided on the outside of both the reducer 6 and the drive motor 5. The heat-conducting cover 37 is connected to the motor base 132. On the one hand, the heat-conducting cover 37 fixes the drive motor 5 and the reducer 6 together, and on the other hand, it effectively transfers the heat generated by the drive motor 5 and the reducer 6 to the outside, thereby improving the heat dissipation effect. Finally, the heat-conducting cover 37 seals and protects the drive motor 5 and the reducer 6.

[0035] In one embodiment of the present invention, such as Figure 3 As shown, a rotating shaft 134 is rotatably mounted on the right support arm 12. One end of the rotating shaft 134 is fixedly connected to the end plate 22. The commutator 35 is located inside the right support arm 12. The sealed bearing 351 is mounted on the rotating shaft 134. An oil valve 341 is also mounted on the oil pump 34 for injecting and discharging heat transfer oil.

[0036] Specifically, the rotating shaft 134 is rotatably connected to the right support arm 12 via the second bearing 135, which is used to support the rotation of the right end of the roller assembly 2. The left end of the roller assembly 2 is connected to the fixed shaft 131 via the first bearing 133, so that the left end plate 22 can rotate stably.

[0037] In one embodiment of the present invention, such as Figure 3 As shown, a base 4 is provided between the left support arm 11 and the right support arm 12. A cooling groove 33 is provided inside the base 4. A heat sink 331 is provided on the upper surface of the cooling groove 33. The heat sink 331 is located below the roller assembly 2.

[0038] Specifically, the cooling tank 33 is placed inside the base 4, providing a large heat dissipation area. The heat-conducting oil in the cooling tank 33 can also be transferred through the heat sink 331. During the rotation of the conveyor belt driven by the roller assembly 2, airflow disturbance is formed above the heat sink 331, which effectively transfers the heat on the heat sink 331 to the air and improves the heat dissipation effect.

[0039] To clearly illustrate the above embodiments, refer to Figures 1-4 The specific working principle of the electric roller conveyor of the present invention is as follows: When in use, the conveyor belt is wrapped around the outside of the roller wall 21. The roller assembly 2 is powered by the built-in drive motor 5 to drive the reducer 6 to work. The reducer 6 drives the end plate 22 at one end of the roller wall 21 to rotate through the output shaft, thereby driving the roller wall 21 to rotate. The roller wall 21 drives the conveyor belt to move.

[0040] The drive motor 5 and the reducer 6 are fixedly connected to the left support wall via the fixed shaft 131. The left end of the roller assembly 2 is connected to the fixed shaft 131 via the first bearing 133, so that the left end plate 22 rotates stably. The rotating shaft 134 at the right end of the roller assembly 2 is rotatably connected to the right support arm 12 via the second bearing 135, which is used to support the rotation of the right end of the roller assembly 2, so that the roller assembly 2 can rotate effectively relative to the drive motor 5. The two ends of the roller assembly 2 rotate on the left support arm 11 and the right support arm 12.

[0041] When heat accumulates in the roller assembly 2, while the roller assembly 2 is rotating, the oil pump 34 transfers the heat transfer oil in the cooling tank 33 to the commutator 35. The commutator 35 sends the heat transfer oil through the sealed bearing 351 to the rotating distributor 361. The distributor 361 evenly transfers the heat transfer oil to each spray pipe 364, and then sprays it out through the nozzle 365 to the surface of the drive motor 5 and the reducer 6.

[0042] After the spray assembly 36 sprays the heat transfer oil onto the surfaces of the drive motor 5 and the reducer 6, the heat transfer oil will fall onto the inner wall of the roller wall 21 under gravity. At this time, the heat transfer oil is evenly adsorbed onto the inner wall of the roller wall 21 by the centrifugal force of the rotation of the roller assembly 2. Since the centrifugal force of the heat transfer oil in the return tank 24 is subject to a leftward component, the heat transfer oil is continuously moved to the left. Therefore, the heat of the roller wall 21 can be evenly absorbed and transferred from right to left. Finally, the heat transfer oil will enter the sedimentation tank 23 on the far left of the return tank 24. The heat transfer oil in the sedimentation tank 23 is returned to the return oil pump 31 through the return suction pipe 38 for use.

[0043] Finally, the hot heat transfer oil is discharged back into the cooling tank 33 via the return oil pump 31, where it is cooled and recycled. The heat transfer oil in the cooling tank 33 can transfer heat through the heat sink 331. As the roller assembly 2 drives the conveyor belt to rotate, airflow disturbance is formed above the heat sink 331, effectively transferring the heat on the heat sink 331 to the air and improving the heat dissipation effect.

[0044] In summary, the electric roller conveyor of this invention uses heat-conducting oil fluid directly sprayed into the inside of the roller assembly. The heat-conducting oil fluid directly absorbs heat from the inside of the roller. The heat-conducting oil flows evenly in the return groove and circulates out. Furthermore, the heat-conducting oil fluid is circulated inside and outside the roller through the oil supply pump and the oil return pump, which makes the heat dissipation of the roller wall sufficient and stable, does not affect the high-speed rotation of the roller, and ensures the sealing of the inside and outside of the roller.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An electric roller conveyor device, characterized in that, It includes a roller assembly (2) and a cylinder wall cooling mechanism (3) disposed inside the roller assembly (2); The roller assembly (2) includes a roller wall (21), the inner wall of which is provided with a return groove (24), and end plates (22) are provided at both ends of the roller wall (21). The cylinder wall cooling mechanism (3) includes a spray assembly (36), a return oil pump (31), an oil delivery pump (34), and a cooling tank (33). The spray assembly (36) is disposed on the inner wall of the roller wall (21), the return oil pump (31) is disposed at the oil outlet end of the return trough (24), the oil delivery pump (34) is disposed at the oil inlet end of the return trough (24), and the cooling tank (33) is disposed between the return oil pump (31) and the oil delivery pump (34).

2. The electric roller conveyor according to claim 1, characterized in that, A drive motor (5) is provided inside the roller wall (21), and a reducer (6) is provided on the drive motor (5). The output shaft of the reducer (6) is connected to one of the end plates (22). The roller assembly (2) is provided with a left support arm (11) and a right support arm (12) on both sides respectively. The left support arm (11) is provided with a drive support assembly (13) for supporting the drive motor (5), including a fixed shaft (131) and a motor seat (132). One end of the fixed shaft (131) is connected to the left support arm (11), and the motor seat (132) is provided at the other end of the fixed shaft (131). The drive motor (5) is mounted on the motor seat (132).

3. The electric roller conveyor according to claim 1, characterized in that, The diameter of the oil outlet end of the reflux trough (24) is larger than the diameter of the oil inlet end. The oil outlet end of the reflux trough (24) is provided with a sedimentation tank (23), which is located on the inner wall of the roller wall (21).

4. The electric roller conveyor according to claim 3, characterized in that, A back suction pipe (38) is provided inside the sedimentation tank (23). A bend (381) is provided at the bottom of the back suction pipe (38). A back suction nozzle (382) is provided at the end of the bend (381). The back suction nozzle (382) is adapted to the sedimentation tank (23), and the height of the back suction nozzle (382) is lower than the upper surface of the sedimentation tank (23).

5. The electric roller conveyor according to claim 4, characterized in that, The top of the suction pipe (38) is provided with an oil return pipe (311), which passes through the fixed shaft (131) and is connected to the oil return pump (31). A filter (32) is provided between the oil return pump (31) and the cooling tank (33).

6. The electric roller conveyor according to claim 2, characterized in that, The spray assembly (36) includes a spray pipe (364) and a distributor (361). Multiple spray pipes (364) are provided and distributed at equal intervals on the inner wall of the return trough (24). The branch ends of the distributor (361) are respectively connected to the oil inlet end of the spray pipe (364). The spray pipe (364) is provided with a nozzle (365). The oil inlet end of the distributor (361) is provided with a sealed bearing (351). The other end of the sealed bearing (351) is provided with a commutator (35). The commutator (35) is connected to the oil pump (34).

7. The electric roller conveyor according to claim 6, characterized in that, The branch end of the distributor (361) is provided with a connector (362), and the oil inlet end of the spray pipe (364) is provided with a hose (363). The hose (363) and the connector (362) are compatible with each other.

8. The electric roller conveyor according to claim 6, characterized in that, The reducer (6) and the drive motor (5) are both provided with a heat-conducting cover (37), which is connected to the motor base (132).

9. The electric roller conveyor according to claim 6, characterized in that, A rotating shaft (134) is rotatably mounted on the right support arm (12). One end of the rotating shaft (134) is fixedly connected to the end plate (22). The commutator (35) is located inside the right support arm (12). The sealed bearing (351) is mounted on the rotating shaft (134). An oil valve (341) is also mounted on the oil pump (34).

10. The electric roller conveyor according to claim 2, characterized in that, A base (4) is provided between the left support arm (11) and the right support arm (12). The cooling groove (33) is located inside the base (4). A heat sink (331) is provided on the upper surface of the cooling groove (33). The heat sink (331) is located below the roller assembly (2).

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