Thin oil lubricating device for chain wheel of mining conveyor

Abstract

The invention relates to the technical field of chain wheel lubrication, in particular to a mining conveyor chain wheel thin oil lubrication device which comprises a chain wheel shaft assembly and an oil tank assembly, the chain wheel shaft assembly comprises a fixing shaft, the fixing shaft is coaxially and rotatably sleeved with a rotating cylinder, the outer side of the rotating cylinder is coaxially and fixedly connected with a chain wheel, and a bearing lubrication assembly and a chain wheel lubrication assembly are arranged in the rotating cylinder. The height of oil liquid in the fixed shaft can be automatically controlled, automatic supplement of the oil liquid is achieved, comprehensive lubrication of the bearing is achieved, meanwhile, heat of the bearing is taken away, and the bearing lubrication effect is achieved; lubricating between the chain wheel and the chain is achieved, abrasion is prevented, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of sprocket lubrication, in particular to a thin oil lubrication device for a mining conveyor sprocket. Background Art

[0002] At present, a variety of scraper conveyors and transfer conveyors are used in domestic coal mines on general and comprehensive mining working faces. The transmission parts all use explosion-proof motors, reducers and sprocket shaft groups. The sprocket shaft group consists of a sprocket body and a connecting cylinder. The sprocket body is a force transmission component and also a vulnerable part. In operation, it is subject to pulsation, impact loads, etc. in addition to static loads.

[0003] The sprocket shaft group needs to be lubricated with lubricating oil during operation. Usually, a high-position oil tank oil pipeline lubrication method is adopted, and the lubricating oil is injected into the sprocket shaft group by relying on the oil's own gravity. However, in the actual working environment, air blockage usually occurs in the lubricating oil delivery system, which prevents the lubricating oil from being injected into the sprocket shaft group, and normal lubrication cannot be performed, causing bearing damage.

[0004] Secondly, in addition to the static load, the sprocket body is also subjected to pulsation and impact loads during operation, causing serious wear of the sprocket. However, the sprocket body is not lubricated in the prior art, causing the sprocket body to be damaged and fail, and the service life is short.

[0005] Therefore, a mining conveyor sprocket thin oil lubrication device is needed to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems and provide a thin oil lubrication device for a sprocket of a mining conveyor.

[0007] The invention discloses a sprocket oil lubrication device for a mining conveyor, comprising a sprocket shaft assembly and an oil tank assembly, wherein the sprocket shaft assembly comprises a fixed shaft, the fixed shaft coaxially rotates and sleeves a rotating cylinder, the outer side of the rotating cylinder is coaxially fixedly connected to the sprocket, and a bearing lubrication assembly and a sprocket lubrication assembly are arranged inside the rotating cylinder;

[0008] A cylindrical hollow cavity that passes through the fixed shaft is arranged inside the fixed shaft, and end covers are connected by bolts at both ends of the fixed shaft, one of the end covers is connected to the oil tank assembly through an oil pipe, and the oil tank assembly includes a box body, a refueling port is arranged at the upper end of the box body, a sealing cover is arranged at the top of the refueling port, an observation window is arranged on the front side of the box body, an oil outlet is arranged at the lower end of the box body, a throttle valve is arranged at the upper end of the oil outlet, an oil receiving sleeve is connected to the outer side of the oil outlet, the oil receiving sleeve is bolted to the lower side of the box body, the lower end of the oil receiving sleeve is connected to the oil pipe, an oil receiving port is arranged at the upper end of the oil receiving sleeve, and the oil receiving port and the oil outlet are arranged at intervals.

[0009] Furthermore, bearings are sleeved at both ends of the fixed shaft, the outer bearing sleeve is sleeved on the rotating cylinder, the two ends of the rotating cylinder are bolted to the oil baffle cover, the oil baffle cover is rotatably connected to the outside of the fixed shaft, and a plurality of parallel sealing rings are arranged at the contact position between the oil baffle cover and the fixed shaft, and the plurality of sealing rings penetrate a plurality of wedge-shaped grooves, and the cross-section of the wedge-shaped groove gradually increases from away from the rotating cylinder to close to the rotating cylinder.

[0010] Furthermore, a sprocket is sleeved in the middle of the rotating cylinder, a keyway 2 is arranged in the middle of the rotating cylinder, a keyway 1 is arranged on the inner ring of the sprocket, key bars are arranged in the keyway 2 and the keyway 1, retaining rings are connected by bolts at both ends of the sprocket, a plurality of groups of oil holes 2 are radially penetrated in the middle of the rotating cylinder, a plurality of groups of oil holes 1 are radially penetrated on the sprocket, the oil hole 2 is connected to the oil hole 1, the outer outlet of the oil hole 1 is connected to the driving groove, and the driving grooves are evenly distributed on the outer periphery of the sprocket.

[0011] Furthermore, a bearing lubrication assembly is fixedly connected to the side of the fixed shaft, and the bearing lubrication assembly includes an oil pump, an oil inlet hole is provided on the side of the oil pump, a connecting block is welded on the outer side of the oil inlet hole, and the other side of the connecting block is welded to the outer side of the fixed shaft, the oil inlet hole is connected to the hollow cavity of the fixed shaft, one end of the oil inlet hole is connected to the oil outlet hole, the inner side of the oil outlet hole abuts against a spring, the other end of the spring abuts against a piston rod, the other end of the piston rod passes through the oil pump and is rotatably provided with a roller, the roller abuts against the side of the axial cam, and the axial cam is fixedly connected to the inner side of the rotating cylinder;

[0012] The oil outlet hole 1 is connected to the left oil injection ring and the right oil injection ring. The left oil injection ring and the right oil injection ring are both fixedly connected to the fixed shaft. The left oil injection ring and the right oil injection ring are both circumferentially evenly distributed with a plurality of oil injection ports. The oil injection port of the left oil injection ring is arranged on the side of the left bearing, and the oil injection port of the right oil injection ring is arranged on the side of the right bearing.

[0013] A limiting surface 1 is arranged on the side surface of the piston rod 1, and the limiting surface 1 is a plane.

[0014] Furthermore, the sprocket lubrication assembly includes a second piston cylinder, which is rotatably sleeved on the outside of the fixed shaft and fixedly connected to the inside of the rotating cylinder. The second piston cylinder has three piston chambers evenly distributed in the circumference, and a connecting hole is arranged in the piston chamber, which is connected to the third oil hole, and the third oil hole passes through the outside of the second piston cylinder, and the third oil hole is connected to the second oil hole in the rotating cylinder.

[0015] One end of the piston cylinder is sealed, and the other end has six screw holes evenly distributed around the circumference. The outer side of the screw holes abuts the guide cover. The position of the guide cover corresponding to the piston cavity is provided with a cavity and a bolt through hole. The bolt passes through the bolt through hole and is threadedly connected with the screw hole on the piston cylinder. The piston rod 2 is slidably arranged in the cavity.

[0016] Furthermore, one end of the piston rod 2 away from the guide cover is rotatably connected to the roller 2, and a limiting surface 2 is set on the side of the piston rod 2, and the limiting surface 2 is a plane. The other end of the piston rod 2 away from the roller 2 abuts against the spring 2, and the other end of the spring 2 abuts against the inner wall of the piston cavity. The cavity of the guide cover is provided with an oil inlet hole 2 corresponding to the spring 2.

[0017] Furthermore, the side of the guide cover away from the second piston cylinder is slidably connected to the moving ring, and the side of the moving ring close to the guide cover is circumferentially evenly distributed with three guide rods, the outer cover of the guide rod is connected to the spring three, the two ends of the spring three are respectively abutted against the side of the guide cover and the moving ring, and the guide rod is slidably arranged in the guide cover;

[0018] A gear ring is slidably arranged in the movable ring, and an arc-shaped pressure plate is fixedly connected to the side of the gear ring. The corresponding angle of the arc-shaped pressure plate is 120 degrees. The side of the arc-shaped pressure plate close to the guide cover abuts against roller two, and a connecting plate one is fixedly arranged on the side of the arc-shaped pressure plate away from the guide cover. Roller three is rotatably arranged at the end of the connecting plate one away from the arc-shaped pressure plate, and roller three abuts against the side of the driving ring. A protrusion is arranged on the side of the driving ring, and the protrusion is arranged at the bottom of the driving ring. The driving ring is coaxially fixedly sleeved on the outside of the fixed shaft.

[0019] Furthermore, the inner side of the gear ring is meshed with pinion 1, which is rotatably arranged on the side of the gear ring, and pinion 2 is coaxially fixedly arranged with the pinion, and pinion 2 is meshed with an arc-shaped rack, and the corresponding central angle of the arc-shaped rack is 120 degrees, and the arc-shaped rack is fixedly connected to the inner side of connecting plate 2, and connecting plate 2 is fixedly connected to the side of the driving ring close to the moving ring and is arranged at the uppermost end of the driving ring;

[0020] Furthermore, the side of the movable ring close to the guide cover is bolted to the mounting block, the mounting block is evenly provided with a plurality of blind holes, a spring four is arranged in the blind holes, a through hole corresponding to the blind hole is arranged on the side of the movable ring, a sphere is arranged in the through hole, and the sphere abuts against the end of the spring four;

[0021] A plurality of grooves are evenly distributed circumferentially on the side surface of the gear ring, and the balls abut against the grooves.

[0022] The beneficial effects of the present invention are as follows: by setting the oil tank assembly, the height of the oil in the fixed shaft can be automatically controlled, and the oil can be automatically replenished. By setting the bearing lubrication assembly, the bearing can be fully lubricated, and the heat of the bearing can be taken away at the same time, so as to achieve the bearing lubrication effect. By setting the sprocket lubrication assembly, the lubrication between the sprocket and the chain can be achieved, so as to prevent wear and increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the following detailed description of the preferred embodiment.The drawings are only for the purpose of illustrating the preferred embodiments and are not to be construed as limiting the invention.

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the fuel tank assembly of the present invention;

[0026] Figure 3 It is a schematic diagram of the partial structure of the fuel tank assembly of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the sprocket shaft assembly of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the rotating drum of the present invention;

[0029] Figure 6 It is a schematic diagram of the sprocket structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the oil retaining cover structure of the present invention;

[0031] Figure 8 It is a schematic diagram of the internal structure of the sprocket shaft assembly of the present invention;

[0032] Fig. 9 This is a schematic diagram of the oil pump structure of the present invention;

[0033] Fig.10 It is a schematic diagram of the structure of the sprocket lubrication assembly of the present invention;

[0034] Fig.11 This is a schematic diagram of the exploded structure of the sprocket lubrication assembly of the present invention;

[0035] Fig.12 For the present invention Fig.11 Schematic diagram of the structure at A in the middle;

[0036] Fig.13 This is a schematic diagram of the structure of the second piston cylinder of the present invention;

[0037] Fig.14 This is a schematic diagram of the explosion structure at the installation block of the present invention;

[0038] Fig.15 For the present invention Fig.14 Schematic diagram of the structure at point B in the middle.

[0039] Reference numerals:

[0040] 1 sprocket shaft assembly, 11 sprocket, 111 retaining ring, 112 oil hole 1, 113 keyway 1, 114 driving groove; 12 rotating cylinder, 121 oil retaining cover, 1211 sealing ring, 1212 wedge groove, 122 keyway 2, 123 oil hole 2; 13 fixed shaft, 131 end cover, 132 hollow cavity, 133 bearing;

[0041] 2 oil tank assembly, 21 tank body, 22 oil filling port, 23 observation window, 24 oil connection sleeve, 241 oil connection port, 25 oil pipe, 26 oil outlet, 261 throttle valve;

[0042] 3 bearing lubrication assembly, 31 oil pump, 311 connecting block, 312 oil outlet hole 1, 313 oil inlet hole 1, 314 piston rod 1, 3141 limiting surface 1, 315 roller 1, 316 spring 1; 32 left oil injection ring, 33 right oil injection ring, 34 axial cam;

[0043] 4 sprocket lubrication assembly, 41 piston cylinder two, 411 oil hole three, 412 piston chamber, 413 connecting hole, 414 screw hole; 42 guide cover, 421 oil inlet hole two; 43 piston rod two, 431 roller two, 432 spring two, 433 limit surface two; 44 moving ring, 441 guide rod, 442 spring three, 443 gear ring, 4431 groove, 444 arc pressure plate, 4441 connecting plate one, 4442 roller three, 445 pinion one, 446 pinion two; 447 mounting block, 448 spring four, 449 sphere; 45 driving ring, 451 connecting plate two, 452 arc rack, 453 protrusion. DETAILED DESCRIPTION

[0044] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-Figure 13 As shown, a sprocket oil lubrication device for a mining conveyor includes a sprocket shaft assembly 1 and an oil tank assembly 2. The sprocket shaft assembly 1 includes a fixed shaft 13. The fixed shaft 13 coaxially rotates and sleeves a rotating cylinder 12. The outer side of the rotating cylinder 12 is coaxially fixedly connected to the sprocket 11. A bearing lubrication assembly 3 and a sprocket lubrication assembly 4 are arranged inside the rotating cylinder 12; the fixed shaft 13 is used to fix the sprocket shaft assembly 1 on the frame to achieve fixed installation of the sprocket shaft assembly 1; the rotating cylinder 12 and the sprocket 11 are used to rotate with the chain outside the sprocket, and the rotating cylinder 12 can also be connected to a driving device to drive the rotating cylinder 12 and the sprocket 11 to rotate, so as to drive the chain outside the sprocket 11 to rotate, the bearing lubrication assembly 3 is used to lubricate the bearings, and the sprocket lubrication assembly 4 is used to lubricate the sprocket 11 and the chain to prevent the sprocket 11 from being damaged by excessive wear during operation and to extend the service life of the sprocket 11 and the chain.

[0045] See also Figure 1 and Figure 8 A cylindrical hollow cavity 132 is provided inside the fixed shaft 13 and penetrates the fixed shaft 13. The two ends of the fixed shaft 13 are bolted to the end covers 131. The end covers 131 are used to seal the hollow cavity 132. One of the end covers 131 is connected to the oil tank assembly 2 through the oil pipe 25. The hollow cavity 132 is used to store lubricating oil. The oil tank assembly 2 is used to replenish the oil in the hollow cavity 132. Figure 2 and Figure 3The oil tank assembly 2 includes a box body 21, which is fixed on a frame or an external bracket. A refueling port 22 is arranged on the upper end of the box body 21, and a sealing cover is arranged on the top of the refueling port 22, and the sealing cover is used to seal the box body 21. An observation window 23 is arranged on the front side of the box body 21, and the amount of oil in the box body 21 is observed through the observation window 23, and the oil is replenished in time. An oil outlet 26 is arranged on the lower end of the box body 21, and a throttle valve 261 is arranged on the upper end of the oil outlet 26. The outer side of the oil outlet 26 is sleeved with an oil receiving sleeve 24, and the oil receiving sleeve 24 is bolted to the lower side of the box body 21. The lower end of the oil receiving sleeve 24 is connected to the oil pipe 25, and an oil receiving port 241 is arranged on the upper end of the oil receiving sleeve 24, and the oil receiving port 241 and the oil outlet 26 are arranged at intervals.

[0046] The oil receiving sleeve 24 is used to block the oil outlet 26. Since the housing 21 is in a sealed state, when the oil level in the oil receiving sleeve 24 is higher than the oil outlet 26, the oil outlet 26 is blocked, and air no longer enters the housing 21, so that the oil in the housing 21 no longer flows into the oil receiving sleeve 24. When the oil in the oil receiving sleeve 24 flows into the fixed shaft 13 and the liquid level in the oil receiving sleeve 24 is lower than the oil outlet 26, air enters the housing 21 through the oil outlet 26, and the oil in the housing 21 flows into the oil receiving sleeve 24, so that the oil in the housing 21 is replenished, thereby controlling the height of the oil in the oil receiving sleeve 24.

[0047] The oil receiving sleeve 24 is connected to the fixed shaft 13 through the oil pipe 25. The liquid levels in the oil receiving sleeve 24 and the fixed shaft 13 will maintain the same height. By adjusting the height of the oil receiving sleeve 24, the height of the oil in the fixed shaft 13 is controlled, thereby achieving automatic replenishment of the oil in the fixed shaft 13.

[0048] When oil needs to be replenished, close the throttle valve 261, seal the oil outlet 26, then open the sealing cover of the refueling port 22, add oil into the box body 21, then seal the refueling port 22 through the sealing cover to achieve the sealing of the box body 21, and then open the throttle valve 261 to complete the oil filling.

[0049] For further information, see Figure 7 and Figure 8, bearings 133 are sleeved at both ends of the fixed shaft 13, and a shoulder is provided on the fixed shaft 13 for axial positioning of the bearing 133. The outer shell of the bearing 133 is connected to the rotating cylinder 12, and the oil baffle cover 121 is bolted at both ends of the rotating cylinder 12. The oil baffle cover 121 abuts against the outer side of the bearing 133 to achieve axial relative fixation of the rotating cylinder 12 and the fixed shaft 13. The oil baffle cover 121 is rotatably connected to the outer side of the fixed shaft 13, and a plurality of parallel sealing rings 1211 are provided at the contact portion between the oil baffle cover 121 and the fixed shaft 13 to achieve dynamic sealing between the oil baffle cover 121 and the fixed shaft 13. The plurality of sealing rings 1211 pass through a plurality of wedge-shaped grooves 1212, and the cross-section of the wedge-shaped groove 1212 gradually increases from away from the rotating cylinder 12 to close to the rotating cylinder 12. During operation, the sealing between the fixed shaft 13 and the oil baffle cover 121 is achieved through the sealing ring 1211. At the same time, when the oil baffle cover 121 and the rotating cylinder 12 rotate, under the action of centrifugal force, the oil will enter the rotating cylinder 12 along the wedge groove 1212, and the oil will be recovered to improve the sealing effect.

[0050] For further information, see Figure 5 and Figure 6 The middle part of the rotating cylinder 12 is sleeved with the sprocket 11, a key groove 122 is arranged in the middle part of the rotating cylinder 12, a key groove 113 is arranged in the inner ring of the sprocket 11, and a key strip is arranged in the key groove 122 and the key groove 113 to realize the circumferential fixation of the rotating cylinder 12 and the sprocket 11, and the retaining ring 111 is connected to the axial fixation of the rotating cylinder 12 and the sprocket 11 by bolts at both ends of the sprocket 11, and the retaining ring 111 is used to realize the axial fixation of the rotating cylinder 12 and the sprocket 11, and a plurality of groups of oil holes 123 are radially penetrated in the middle part of the rotating cylinder 12, and the sprocket 11 is radially A plurality of groups of oil holes 112 are arranged throughout, oil hole 2 123 is connected to oil hole 112, outer outlets of oil hole 112 are connected to drive grooves 114, drive grooves 114 are evenly distributed on the periphery of sprocket 11, drive grooves 114 are used to cooperate with chain links to achieve relative fixation of chain and sprocket 11, oil hole 112 is used to inject oil into knife drive grooves 114 to achieve lubrication of drive grooves 114 and chain links, and reduce relative friction and wear between drive grooves 114 and chain links.

[0051] For further information, see Figure 8 and Fig. 9The side of the fixed shaft 13 is fixedly connected to the bearing lubrication assembly 3, and the bearing lubrication assembly 3 includes an oil pump 31. An oil inlet hole 313 is provided on the side of the oil pump 31. A connecting block 311 is welded to the outside of the oil inlet hole 313. The other side of the connecting block 311 is welded to the outside of the fixed shaft 13. The oil inlet hole 313 is connected to the hollow cavity 132 of the fixed shaft 13. The oil in the fixed shaft 13 can enter the oil pump 31 through the oil inlet hole 313. One end of the oil inlet hole 313 is connected to the oil outlet hole 312. The inner side of the oil outlet hole 312 abuts against a spring 316. The other end of the spring 316 abuts against a piston rod 314. When the piston rod 314 is extended, the piston rod 314 will not block the oil inlet hole 313. During the compression process, rod 314 passes through oil inlet hole 313 and blocks oil inlet hole 313. At this time, the oil in oil pump 31 is sealed and squeezed, and piston rod 314 continues to move, squeezing the oil in oil pump 31 and squeezing the oil out of oil outlet hole 312. The other end of piston rod 314 penetrates oil pump 31 and is rotatably provided with roller 315. Roller 315 abuts against the side of axial cam 34. Axial cam 34 is fixedly connected to the inner side of rotating cylinder 12. When axial cam 34 rotates with rotating cylinder 12, axial cam 34 squeezes roller 315, thereby squeezing piston rod 314, realizing contraction of piston rod 314. Oil is squeezed out of oil outlet hole 312 during the contraction process.

[0052] The oil outlet hole 1312 connects the left oil injection ring 32 and the right oil injection ring 33, and both the left oil injection ring 32 and the right oil injection ring 33 are fixedly connected to the fixed shaft 13. Both the left oil injection ring 32 and the right oil injection ring 33 have multiple oil injection ports evenly distributed circumferentially. The oil injection port of the left oil injection ring 32 is arranged on the side of the left bearing 133, and the oil injection port of the right oil injection ring 33 is arranged on the side of the right bearing 133. The oil flows from the oil outlet hole 1312 into the left oil injection ring 32 and the right oil injection ring 33, and is sprayed from the oil injection port to the roller of the bearing 133 to lubricate the bearing 133. The oil then flows back to the bottom of the knife rotating cylinder 12 and takes away the heat of the bearing 133 to cool the bearing 133.

[0053] A limiting surface 3141 is provided on the side of the piston rod 314, and the limiting surface 3141 is a plane. The setting of the limiting surface 3141 can prevent the piston rod 314 from rotating, thereby achieving a stable position of the roller 315, which can roll along the axial cam 34.

[0054] For further information, see Figure 10-13 The sprocket lubrication assembly 4 includes a piston cylinder 41, which is rotatably sleeved on the outside of the fixed shaft 13 and fixedly connected to the inside of the rotating cylinder 12, for example, by welding. Fig.13The piston cylinder 41 has three piston chambers 412 evenly distributed in the circumference, and a connecting hole 413 is arranged in the piston chamber 412, and the connecting hole 413 is communicated with the oil hole 411. The oil hole 411 runs through the outer side of the piston cylinder 41, and the oil hole 411 is communicated with the oil hole 123 in the rotating cylinder 12. When the oil in the piston chamber 412 is squeezed, it will enter the oil hole 411 through the connecting hole 413, and then pass through the oil hole 123 and the oil hole 112 in turn, and then enter the driving groove 114, so as to realize the lubrication of the sprocket 11 and the chain;

[0055] One end of the piston cylinder 41 is sealed, and the other end has six screw holes 414 evenly distributed around the circumference. The outer sides of the screw holes 414 abut against the guide cover 42. A cavity and a bolt through hole are set at the position corresponding to the guide cover 42 and the piston cavity 412. The bolts pass through the bolt through holes and are threadedly connected with the screw holes 414 on the piston cylinder 41 to fix the guide cover 42 and the piston cavity 412. A piston rod 43 is slidably set in the cavity.

[0056] For further information, see Fig.11 and Fig.12 The end of the piston rod 43 away from the guide cover 42 is rotatably connected to the roller 431. The side of the piston rod 43 is provided with a limiting surface 433. The limiting surface 433 is a plane. The limiting surface 433 prevents the piston rod 43 from rotating and driving the roller 431 to rotate, thereby achieving the stability of the position of the roller 431. The other end of the piston rod 43 away from the roller 431 abuts against the spring 432. The other end of the spring 432 abuts against the inner wall of the piston cavity 412. The cavity of the guide cover 42 is provided with an oil inlet hole 432 corresponding to the spring 432. 421, the oil in the rotating cylinder 12 enters the piston chamber 412 through the oil inlet hole 421. When the piston rod 43 contracts, the piston rod 43 seals the oil inlet hole 421, so that the piston rod 43 seals the piston chamber 412. The piston rod 43 continues to move to squeeze the oil in the piston chamber 412. When the oil is squeezed, it will enter the oil hole 411 through the connecting hole 413, and then pass through the oil hole 123 and the oil hole 1 112 in turn, and then enter the driving groove 114 to achieve lubrication of the sprocket 11 and the chain.

[0057] For further information, see Fig.10 and Fig.11 The side of the guide cover 42 away from the second piston cylinder 41 is slidably connected to the moving ring 44. The side of the moving ring 44 close to the guide cover 42 is evenly distributed with three guide rods 441. The outer sleeve of the guide rod 441 is connected to the spring 3 442. The two ends of the spring 3 442 are respectively abutted against the side of the guide cover 42 and the moving ring 44. The guide rod 441 is slidably set in the guide cover 42;

[0058] A gear ring 443 is slidably arranged in the movable ring 44, and a damping structure, such as a friction structure, or a positioning structure, such as a ball, a spring and a groove, is arranged between the gear ring 443 and the movable ring 44, so that the gear ring 443 and the movable ring 44 can realize relative rotation only under a large torque condition. An arc pressure plate 444 is fixedly connected to the side of the gear ring 443, and the corresponding angle of the arc pressure plate 444 is 120 degrees. The side of the arc pressure plate 444 close to the guide cover 42 abuts against the roller 2 431, and a connecting plate 1 4441 is fixedly arranged on the side of the arc pressure plate 444 away from the guide cover 42. A roller 3 4442 is rotatably arranged at one end of the connecting plate 1 4441 away from the arc pressure plate 444, and the roller 3 4442 abuts against the side of the driving ring 45. A protrusion 453 is arranged on the side of the driving ring 45, and the protrusion 453 is arranged at the bottom of the driving ring 45. The driving ring 45 is coaxially fixedly sleeved on the outside of the fixed shaft 13.

[0059] During operation, the rotating cylinder 12 drives the piston cylinder 2 41, the guide cover 42 and the movable ring 44 to rotate, while the driving ring 45 is fixed on the fixed shaft 13 and does not rotate, so that the driving ring 45 rotates relative to the movable ring 44, and when the piston rod 2 43 and the roller 2 431 rotate to the bottom, the protrusion 453 on the driving ring 45 squeezes the roller 3 4442, and the roller 3 4442 drives the arc pressure plate 444, the gear ring 443 and the movable ring 44 to move through the connecting plate 1 4441, and the arc pressure plate 444 squeezes the roller 2 431 to drive the piston rod 2 43 to contract, and the piston rod 2 43 squeezes the oil entering the piston cavity 412 from the oil inlet hole 2 421 out of the piston cavity 412, and the oil passes through the oil hole 3 411, the oil hole 2 123 and the oil hole 1 112 in turn, and then enters the driving groove 114 to achieve lubrication of the sprocket 11 and the chain.

[0060] Furthermore, the inner side of the gear ring 443 is meshedly connected to pinion 1 445, which is rotatably set on the side of the gear ring 443, and pinion 2 446 is coaxially fixedly set on pinion 1 445. Pinion 2 446 is meshedly connected to an arc-shaped rack 452, and the corresponding center angle of the arc-shaped rack 452 is 120 degrees. The arc-shaped rack 452 is fixedly connected to the inner side of the connecting plate 2 451, and the connecting plate 2 451 is fixedly connected to the side of the driving ring 45 close to the moving ring 44 and is set at the uppermost end of the driving ring 45.

[0061] During operation, the piston cylinder 41, the guide cover 42 and the moving ring 44 rotate relative to the driving ring 45 together with the rotating cylinder 12, and the gear ring 443 rotates together with the moving ring 44.

[0062] When pinion 1 445 and pinion 2 446 rotate to the upper end, pinion 2 446 meshes with arc rack 452, arc rack 452 drives pinion 1 445 and pinion 2 446 to rotate, pinion 1 445 drives gear ring 443 to rotate, gear ring 443 drives arc pressure plate 444 to rotate relative to moving ring 44, realizing rotation of arc pressure plate 444, thereby realizing arc pressure plate 444 abutting against next roller 2 431. Since the corresponding angle of the arc rack 452 is 120 degrees, the arc rack 452 drives the gear ring 443 and the arc pressure plate 444 to rotate 120 degrees. Since the corresponding center angle of the arc pressure plate 444 is 120 degrees, the arc pressure plate 444 can only abut against one roller 2 431, and can only abut against one roller 2 431, so that when the arc pressure plate 444 rotates relative to the moving ring 44, the extrusion piston rod 2 43 can be replaced, and different drive grooves 114 can be lubricated in turn, so that only one group of drive grooves 114 can be lubricated in one circle, and different drive grooves 114 can be lubricated in turn, saving lubricating oil.

[0063] For further information, see Fig.14 and Fig.15 The side of the movable ring 44 close to the guide cover 42 is bolted to the mounting block 447, and the mounting block 447 is evenly provided with a plurality of blind holes, and a spring 448 is arranged in the blind hole. A through hole corresponding to the blind hole is arranged on the side of the movable ring 44, and a ball 449 is arranged in the through hole, and the ball 449 abuts against the end of the spring 448;

[0064] A plurality of grooves 4431 are evenly distributed circumferentially on the side of the gear ring 443, and the ball 449 abuts against the groove 4431; through the arrangement of the spring 448 and the ball 449, the ball can abut against the groove 4431 to position the gear ring 443 and prevent the gear ring 443 from rotating freely.

[0065] When pinion 2 446 meshes with arc-shaped rack 452, pinion 2 446 drives gear ring 443 to rotate, groove 4431 on gear ring 443 squeezes ball 449, ball 449 squeezes spring 448 and shrinks into the through hole of movable ring 44, and gear ring 443 can rotate at this time. After rotating 120 degrees, pinion 2 446 disengages from arc-shaped rack 452, and ball 443 enters groove 4431 to position and fix gear ring 443.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sprocket oil lubrication device for a mining conveyor, comprising a sprocket shaft assembly (1) and an oil tank assembly (2), characterized in that: The sprocket shaft assembly (1) comprises a fixed shaft (13), the fixed shaft (13) is coaxially rotatably sleeved on a rotating cylinder (12), the outer side of the rotating cylinder (12) is coaxially fixedly connected to a sprocket (11), and a bearing lubrication assembly (3) and a sprocket lubrication assembly (4) are arranged inside the rotating cylinder (12); A cylindrical hollow cavity (132) penetrating the fixed shaft (13) is arranged inside the fixed shaft (13); two ends of the fixed shaft (13) are bolted to end covers (131); one of the end covers (131) is connected to the oil tank assembly (2) through an oil pipe (25); the oil tank assembly (2) comprises a box body (21); a refueling port (22) is arranged at the upper end of the box body (21); a sealing cover is arranged at the top of the refueling port (22); and a viewing port (23) is arranged at the front side of the box body (21). An inspection window (23) is provided, an oil outlet (26) is provided at the lower end of the casing (21), a throttle valve (261) is provided at the upper end of the oil outlet (26), an oil receiving sleeve (24) is sleeved on the outer side of the oil outlet (26), the oil receiving sleeve (24) is bolted to the lower side of the casing (21), the lower end of the oil receiving sleeve (24) is connected to the oil pipe (25), an oil receiving port (241) is provided at the upper end of the oil receiving sleeve (24), and the oil receiving port (241) and the oil outlet (26) are spaced apart.

2. A mining conveyor sprocket thin oil lubrication device according to claim 1, characterized in that: Both ends of the fixed shaft (13) are sleeved with bearings (133), the outer shell of the bearing (133) is sleeved with the rotating cylinder (12), the two ends of the rotating cylinder (12) are bolted to the oil baffle cover (121), the oil baffle cover (121) is rotatably connected to the outside of the fixed shaft (13), and a plurality of sealing rings (1211) arranged in parallel are arranged at the contact portion between the oil baffle cover (121) and the fixed shaft (13), the plurality of sealing rings (1211) penetrate a plurality of wedge-shaped grooves (1212), and the cross-section of the wedge-shaped groove (1212) gradually increases from away from the rotating cylinder (12) to close to the rotating cylinder (12).

3. A mining conveyor sprocket thin oil lubrication device according to claim 2, characterized in that: The middle part of the rotating cylinder (12) is sleeved with the sprocket (11), the middle part of the rotating cylinder (12) is provided with a second keyway (122), the inner ring of the sprocket (11) is provided with a first keyway (113), key bars are provided in the second keyway (122) and the first keyway (113), the two ends of the sprocket (11) are bolted to the retaining ring (111), the middle part of the rotating cylinder (12) is provided with a plurality of groups of second oil holes (123) radially penetrating, the sprocket (11) is provided with a plurality of groups of first oil holes (112) radially penetrating, the second oil holes (123) are connected to the first oil hole (112), the outer outlet of the first oil hole (112) is connected to the driving groove (114), and the driving groove (114) is evenly distributed on the outer periphery of the sprocket (11).

4. A mining conveyor sprocket thin oil lubrication device according to claim 3, characterized in that: The side of the fixed shaft (13) is fixedly connected to a bearing lubrication assembly (3), the bearing lubrication assembly (3) comprising an oil pump (31), the side of the oil pump (31) is provided with an oil inlet hole (313), the outer side of the oil inlet hole (313) is welded with a connecting block (311), the other side of the connecting block (311) is welded to the outer side of the fixed shaft (13), the oil inlet hole (313) is communicated with the hollow cavity (132) of the fixed shaft (13), and the oil inlet hole (313) is connected to the inner side of the fixed shaft (13). One end of the oil outlet hole (313) is connected to an oil outlet hole (312), the inner side surface of the oil outlet hole (312) abuts against a spring (316), the other end of the spring (316) abuts against a piston rod (314), the other end of the piston rod (314) passes through the oil pump (31) and is rotatably provided with a roller (315), the roller (315) abuts against the side surface of an axial cam (34), and the axial cam (34) is fixedly connected to the inner side of the rotating cylinder (12); The oil outlet hole 1 (312) is connected to the left oil injection ring (32) and the right oil injection ring (33); the left oil injection ring (32) and the right oil injection ring (33) are both fixedly connected to the fixed shaft (13); the left oil injection ring (32) and the right oil injection ring (33) are both circumferentially evenly distributed with a plurality of oil injection ports; the oil injection port of the left oil injection ring (32) is arranged on the side of the left bearing (133), and the oil injection port of the right oil injection ring (33) is arranged on the side of the right bearing (133); A limiting surface 1 (3141) is provided on the side of the piston rod 1 (314), and the limiting surface 1 (3141) is a plane.

5. A thin oil lubrication device for a mining conveyor sprocket according to any one of claims 1 to 4, characterized in that: The sprocket lubrication assembly (4) comprises a second piston cylinder (41), the second piston cylinder (41) being rotatably sleeved on the outside of the fixed shaft (13) and fixedly connected to the inside of the rotating cylinder (12), the second piston cylinder (41) having three piston chambers (412) evenly distributed in the circumferential direction, a connecting hole (413) being arranged in the piston chamber (412), the connecting hole (413) being connected to a third oil hole (411), the third oil hole (411) penetrating the outside of the second piston cylinder (41), the third oil hole (411) being connected to a second oil hole (123) in the rotating cylinder (12), One end of the second piston cylinder (41) is sealed, and the other end has six screw holes (414) evenly distributed around the circumference. The outer sides of the screw holes (414) abut against the guide cover (42). A cavity and a bolt through hole are arranged at positions corresponding to the guide cover (42) and the piston cavity (412). The bolt passes through the bolt through hole and is threadedly connected to the screw hole (414) on the second piston cylinder (41). A second piston rod (43) is slidably arranged in the cavity.

6. A mining conveyor sprocket thin oil lubrication device according to claim 5, characterized in that: One end of the second piston rod (43) away from the guide cover (42) is rotatably connected to the second roller (431); a second limiting surface (433) is provided on the side of the second piston rod (43); the second limiting surface (433) is a plane; the other end of the second piston rod (43) away from the second roller (431) abuts against the second spring (432); the other end of the second spring (432) abuts against the inner wall of the piston cavity (412); and a second oil inlet hole (421) is provided in the cavity of the guide cover (42) corresponding to the second spring (432).

7. A mining conveyor sprocket thin oil lubrication device according to claim 6, characterized in that: The side of the guide cover (42) away from the second piston cylinder (41) is slidably connected to the moving ring (44), and the side of the moving ring (44) close to the guide cover (42) is evenly distributed with three guide rods (441) in the circumferential direction. The guide rods (441) are outer-circumferentially connected with springs (442), and the two ends of the springs (442) are respectively abutted against the side surfaces of the guide cover (42) and the moving ring (44), and the guide rods (441) are slidably arranged in the guide cover (42); A gear ring (443) is slidably arranged inside the movable ring (44), and a side of the gear ring (443) is fixedly connected to an arc-shaped pressure plate (444), and the corresponding angle of the arc-shaped pressure plate (444) is 120 degrees. The side of the arc-shaped pressure plate (444) close to the guide cover (42) abuts against roller two (431), and the side of the arc-shaped pressure plate (444) away from the guide cover (42) is fixedly arranged with a connecting plate one (4441), and the end of the connecting plate one (4441) away from the arc-shaped pressure plate (444) is rotatably arranged with a roller three (4442), and the roller three (4442) abuts against the side of the driving ring (45), and a protrusion (453) is arranged on the side of the driving ring (45), and the protrusion (453) is arranged at the bottom of the driving ring (45), and the driving ring (45) is coaxially fixedly sleeved on the outside of the fixed shaft (13).

8. The thin oil lubrication device for a mining conveyor sprocket according to claim 7, characterized in that: The inner side of the gear ring (443) is meshedly connected to pinion gear 1 (445), and pinion gear 1 (445) is rotatably arranged on the side of the gear ring (443). Pinion gear 1 (445) is coaxially fixedly arranged with pinion gear 2 (446), and pinion gear 2 (446) is meshedly connected to an arc-shaped rack (452), and the corresponding central angle of the arc-shaped rack (452) is 120 degrees. The arc-shaped rack (452) is fixedly connected to the inner side of connecting plate 2 (451), and connecting plate 2 (451) is fixedly connected to the side of the driving ring (45) close to the moving ring (44) and is arranged at the uppermost end of the driving ring (45).

9. A mining conveyor sprocket thin oil lubrication device according to claim 8, characterized in that: The movable ring (44) is connected to a mounting block (447) by bolts on the side close to the guide cover (42); the mounting block (447) is evenly provided with a plurality of blind holes, a spring four (448) is arranged in the blind hole; a through hole corresponding to the blind hole is arranged on the side of the movable ring (44), a ball (449) is arranged in the through hole, and the ball (449) abuts against the end of the spring four (448); a plurality of grooves (4431) are evenly distributed circumferentially on the side of the gear ring (443), and the ball (449) abuts against the groove (4431).

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