Medicinal particle stirrer bearing supporting device and bearing gap adjusting method

Abstract

The invention discloses a medicinal particle stirrer bearing supporting device and a bearing clearance adjusting method, the medicinal particle stirrer bearing supporting device comprises two tapered roller bearings, a bearing sleeve and a locking sleeve, the two tapered roller bearings are connected to a stirring driving shaft and are arranged up and down; the two tapered roller bearings are sleeved with a bearing sleeve, the upper end of the bearing sleeve is fixed to the supporting platform through an arranged flange plate, a locking sleeve is spirally connected to the interior of the lower end of the bearing sleeve, the stirring driving shaft is movably sleeved with the locking sleeve, and the upper end of the locking sleeve abuts against inner rings of the tapered roller bearings; the annular worm gear is movably sleeved outside the stirring driving shaft, the worm meshed with the annular worm gear is horizontally and rotatably connected to the cantilever support, the cantilever support is fixedly connected to the bottom of the supporting platform, the worm is connected with a gear motor, and the gear motor is installed on the supporting platform through a motor support. Mechanical bearing clearance adjustment is achieved, time and labor are saved, the labor cost is reduced, parts such as bearings do not need to be disassembled, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medicinal granule mixers, in particular to a bearing support device for a medicinal granule mixer, and also relates to a method for adjusting the bearing clearance of a bearing support device for a medicinal granule mixer. Background Art

[0002] A medicinal granule mixer generally includes a mixing tank and a sealing cover covering the top of the mixing tank. The mixing tank is fixedly connected to a support platform. A mixing blade is arranged in the mixing tank. The mixing blade extends out of the mixing tank through a mixing drive shaft in a sealed manner and is rotatably connected to a bearing support device, and then continues to extend out at the lower end and is fixedly connected to a driven belt large wheel. The bearing support device is connected to the bottom of the support platform. The driven belt large wheel is connected to a drive motor through a belt. The drive motor is installed on a motor frame at the bottom of the support platform. Due to the large size of the equipment, it is convenient for personnel to climb up the support platform to add materials. The driven belt large wheel weighs more than 800 catties. Due to the long-term offset torque of the driven belt large wheel below, the tapered roller bearing on the lower side inside the bearing support device is severely worn, resulting in too large a bearing clearance and a large jump of the mixing drive shaft, further aggravating the damage of the bearing, high failure rate. When overhauling, a crane is used in cooperation with manual installation. However, due to the large size of the equipment and the heavy weight of the pulley below, it takes at least 3 - 5 days of shutdown for each replacement after a failure, and it is time-consuming and laborious, greatly increasing the labor cost. For faults such as bearing clearance adjustment, excessive wear, or oil starvation and burning, the above-mentioned maintenance process has to be carried out. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a bearing support device for a medicinal granule mixer and a method for adjusting the bearing clearance, which can realize mechanical adjustment of the bearing clearance, save time and effort, reduce the labor cost, and there is no need to disassemble components such as bearings, greatly improving the production efficiency.

[0004] The technical solution of the present invention: A bearing support device for a medicinal granule mixer includes two tapered roller bearings, a bearing sleeve, and a locking sleeve. The two tapered roller bearings are connected to a mixing drive shaft and arranged vertically. The bearing sleeve is sleeved outside the two tapered roller bearings, and the upper end is fixed to the support platform through a flange plate provided. A locking sleeve is screwed inside the lower end of the bearing sleeve. The locking sleeve is movably sleeved outside the mixing drive shaft, and the upper end can abut against the inner ring of the lower tapered roller bearing. The lower end of the locking sleeve is vertically movably connected to an annular worm gear coaxial with it. The annular worm gear is movably sleeved outside the mixing drive shaft. A worm gear meshing with the annular worm gear is a horizontal rotating connecting member on a cantilever frame. The cantilever frame is fixedly connected to the bottom of the support platform. The worm is connected to a reduction motor, and the reduction motor is installed on the support platform through a motor frame.

[0005] Furthermore, a bearing lubricating mechanism is installed on the side wall of the bearing sleeve. The bearing lubricating mechanism includes a lubricating pipe, a lubricating seat, a lubricating solenoid valve, and an oil storage tank. The oil storage tank is installed at the top of the outer end of the lubricating seat. The lubricating seat is fixedly connected to the bearing sleeve. An oil passage is provided inside the lubricating seat. The inlet end of the oil passage is connected to the outlet of the oil storage tank, and the outlet end of the oil passage is connected to the lubricating pipe. The lubricating pipe extends through a through hole provided on the side wall of the bearing sleeve and is located above the lower tapered roller bearing, and the end of the lubricating pipe faces the cage of the tapered roller bearing. The lubricating solenoid valve is installed on the lubricating seat to control the opening and closing of the oil passage.

[0006] Furthermore, the distance between the above-mentioned lubricating pipe and the cage is 5-10 mm.

[0007] Furthermore, the above-mentioned lubricating pipe is arranged obliquely.

[0008] Furthermore, a thermocouple sensor is installed on the bearing sleeve, and the inner section of the thermocouple sensor contacts the outer ring of the lower tapered roller bearing.

[0009] Furthermore, the above-mentioned bearing support device for a medicinal granule mixer further includes a swing detection mechanism. The swing detection mechanism includes a detection sensor, a vertical pipe, a connecting plate, and a T-slot plate. The detection sensor is installed at the lower end of the vertical pipe, and the probe faces the edge of the large driven pulley fixedly connected to the lower end of the stirring drive shaft. The upper end of the vertical pipe is fixedly connected with a connecting plate. The connecting plate is fixedly connected to the T-slot plate through T-screws and nuts. The T-slot plate is fixedly connected to the bottom of the support platform. The neutral planes of the two rows of T-slots of the T-slot plate are coplanar with the stirring drive shaft.

[0010] Furthermore, the signal wire of the above-mentioned detection sensor passes through the inside of the vertical pipe and is led out from the wire outlet hole provided near the top.

[0011] Furthermore, a vibration sensor is also installed on the bearing sleeve.

[0012] Furthermore, the worm and worm gear mechanism composed of the worm and the worm gear adopts a self-locking worm and worm gear mechanism. A sliding keyway is provided inside the worm gear. A sliding sleeve is provided at the lower end of the locking sleeve. An outwardly protruding sliding key is provided on the sliding sleeve. The sliding key is movably embedded in the sliding keyway. A thrust bearing coaxial with the worm gear is installed below the worm gear. The thrust bearing is installed on the annular tray. The annular tray is fixedly connected to the cantilever through the tray support.

[0013] A method for adjusting the bearing clearance of the bearing support device of a medicinal granule mixer is as follows: When the lower tapered roller bearing wears, it will cause the mixing drive shaft to jump, which in turn is reflected in the jump of the large driven pulley fixedly connected to the lower end of the mixing drive shaft. When the detection sensor detects that the jump value of the large driven pulley is greater than the set threshold, the control deceleration motor is started, driving the worm to rotate towards the locking sleeve, thereby driving the worm gear to rotate. The worm gear rotates itself, driving the locking sleeve to rotate and move into the bearing housing. The locking sleeve drives the inner ring of the lower tapered roller bearing to move inward. When the jump amount detected by the detection sensor is less than the set threshold, the clearance between the inner ring and the rollers of the tapered roller bearing reaches the design requirements of the tapered roller bearing, and the deceleration motor action is stopped.

[0014] The beneficial effects of the present invention: Compared with the prior art, by installing a locking sleeve below the bearing and driving the locking sleeve to rotate through the motor-driven worm and worm gear, and then performing locking adjustment, the present invention can quickly realize the clearance adjustment of the loose tapered roller bearing on the lower side, without the need for manual maintenance of clearance adjustment, saving time and effort, without causing long-term shutdown or without shutdown, quickly realizing clearance adjustment or on-line adjustment, and greatly improving production efficiency. Brief Description of the Drawings

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the bearing support device of a medicinal granule mixer; Figure 2 It is an isometric side structure schematic diagram of the bearing support device of a medicinal granule mixer Figure 3 It is a three-dimensional structure schematic diagram of the bearing support device of a medicinal granule mixer from another perspective; Figure 4 It is a rear view structure schematic diagram of the bearing support device of a medicinal granule mixer; Figure 5 It is a right view structure schematic diagram of the bearing support device of a medicinal granule mixer; Figure 6 For Figure 5 It is a schematic diagram of the C-C sectional structure in Figure 7 For Figure 4 It is a schematic diagram of the D-D sectional structure in Figure 8 For Figure 4 It is a schematic diagram of the E-E sectional structure in Figure 9 It is a bottom view structure schematic diagram of the bearing support device of a medicinal granule mixer; Figure 10 It is a schematic diagram of the swing detection mechanism structure; Figure 11 It is a schematic diagram of the swing detection mechanism structure; Figure 12Schematic diagram of the bearing lubricating mechanism; Figure 13 Schematic diagram of the structure at the worm gear installation position. Detailed implementation mode

[0016] Example 1: As Figure 1-13 shown, a bearing support device for a medicinal granule mixer includes two tapered roller bearings 1, a bearing sleeve 2, and a locking sleeve 3. The two tapered roller bearings 1 are connected to the mixing drive shaft 4 and arranged vertically. The bearing sleeve 2 is sleeved outside the two tapered roller bearings 1, and the upper end is fixed to the support platform 6 through a flange 5 provided. The lower end of the bearing sleeve 2 is internally screwed with a locking sleeve 3. The locking sleeve 3 is movably sleeved outside the mixing drive shaft 4, and the upper end can abut against the inner ring of the lower tapered roller bearing 1. The lower end of the locking sleeve 3 is vertically movably connected to an annular worm gear 7 coaxial with it. The annular worm gear 7 is movably sleeved outside the mixing drive shaft 4. The worm 8 meshing with the annular worm gear 7 is a horizontal rotating connector on the cantilever frame 9. The cantilever frame 9 is fixedly connected to the bottom of the support platform 6. The worm 8 is connected to a reduction motor 10. The reduction motor 10 is installed on the support platform 6 through a motor bracket. By installing a locking sleeve under the bearing and driving the worm gear to rotate the locking sleeve through the motor, the clearance adjustment of the lower loose tapered roller bearing can be quickly realized, without manual maintenance for clearance adjustment, saving time and effort, without causing long-term shutdown or without shutdown, quickly realizing clearance adjustment or on-line adjustment, and greatly improving production efficiency.

[0017] To cool the lower tapered roller bearing, a bearing lubricating mechanism 11 is installed on the side wall of the bearing sleeve 2. Among them, the bearing lubricating mechanism 11 includes an oil filling pipe 1101, an oil filling seat 1102, an oil filling solenoid valve 1103, and an oil storage tank 1104. The oil storage tank 1104 is installed at the top of the outer end of the oil filling seat 1102. The oil filling seat 1102 is fixedly connected to the bearing sleeve 2. An oil passage 1105 is provided inside the oil filling seat 1102. The oil inlet end of the oil passage 1105 is connected to the oil outlet of the oil storage tank 1104, and the oil outlet end of the oil passage 1105 is connected to the oil filling pipe 1101. The oil filling pipe 1101 extends into the bearing sleeve 2 through a through hole 1106 provided on the side wall and is located above the lower tapered roller bearing 1, and the end is facing the cage of the tapered roller bearing 1. The oil filling solenoid valve 1103 is installed on the oil filling seat 1102 to control the opening and closing of the oil passage 1105. By setting a small bearing lubricating mechanism, by putting the cooling lubricating oil into the oil storage tank, when cooling lubrication is required, the solenoid valve is controlled to open the oil passage, the oil in the oil storage tank slowly enters the oil filling pipe, and the oil filling pipe slowly drips into the cage of the tapered roller bearing, and plays a role in lubricating the whole roller under the rotation effect and plays a role in cooling. The lubrication is convenient and fast. The tapered roller bearing after lubrication and cooling has slow friction and wear and a longer service life.

[0018] In order to better achieve refueling, the distance between the refueling pipe 1101 and the retaining frame of the tapered roller bearing on the lower side is 5-10mm, which can ensure that the oil drips steadily into the retaining frame; in order to facilitate the oil to drip fully into the retaining frame, the refueling pipe 1101 is arranged at an angle.

[0019] In order to achieve accurate refueling, a thermocouple sensor 1107 is installed on the bearing sleeve 2. The inner section of the thermocouple sensor 1107 contacts the outer ring of the tapered roller bearing 1 on the lower side. According to the change in temperature, when the set threshold is reached, the retaining frame is refueled. After adding a set amount of oil, refueling is stopped. After running for a period of time, the temperature is collected again. If the temperature is lower than the set threshold, refueling continues. Refueling is stopped after the set temperature is met. Accurate refueling can be achieved, over- or under-refueling can be avoided, and better refueling control can be achieved.

[0020] In order to realize the monitoring of the gap generated by the tapered roller bearing, a bearing support device for a medicinal granule mixer also includes a swing detection mechanism 12, wherein the swing detection mechanism 12 includes a detection sensor 1201, a vertical tube 1202, a connecting plate 1203 and a T-slot plate 1204, the detection sensor 1201 is installed at the lower end of the vertical tube 1202 and the probe is directly facing the edge of the driven belt pulley 14 fixedly connected to the lower end of the stirring drive shaft 4, the upper end of the vertical tube 1202 is fixedly connected to the connecting plate 1203, the connecting plate 1203 is fixedly connected to the T-slot plate 1204 by T-screws 1205 and nuts 1206, the T-slot plate 1204 is fixedly connected to the bottom of the support platform 6, and the neutral plane of the two rows of T-slots of the T-slot plate 1204 is aligned with the neutral plane of the two rows of T-slots of the T-slot plate 1204. The stirring drive shaft 4 is coplanar, and the monitoring of the clearance of the tapered roller bearing on the lower side is mapped by the jump on the driven belt pulley at a long distance, so that more accurate monitoring can be achieved. Because of the small jump, a large value of feedback can be given to the driven belt pulley to amplify the jump. The corresponding bearing clearance is reversed by the large jump of the driven belt pulley, thereby achieving more accurate monitoring. When the monitored data is greater than the set threshold, the reduction motor is started to drive the worm gear to rotate the locking sleeve to adjust the clearance of the tapered roller bearing on the lower side. The detection sensor is installed in a vertical tube to facilitate cable routing. The T-slot plate with a T-slot is connected with a T-screw to connect the connecting plate, which is convenient for adjusting the position of the detection sensor relative to the driven pulley, and the adjustment is convenient and quick.

[0021] The signal line of the detection sensor 1201 passes through the interior of the vertical tube 1202 and is led out from the outlet hole 1207 set near the top. The structure is compact, which avoids the cables being messy and also avoids affecting the probe test.

[0022] In order to realize fault diagnosis, a vibration sensor 13 is also installed on the bearing sleeve 2. When the vibration data of the vibration sensor is greater than a set threshold, it is judged that the equipment is damaged and needs to be repaired.

[0023] The worm and worm gear mechanism composed of the worm gear 7 and the worm 8 adopts a self-locking worm and worm gear mechanism. The self-locking worm and worm gear can further strengthen the locking effect and prevent the locking sleeve from loosening. A sliding key groove 701 is provided inside the worm gear 7. A sliding sleeve 301 is provided at the lower end of the locking sleeve 3. An outwardly protruding sliding key 302 is provided on the sliding sleeve 301. The sliding key 302 is movably inserted into the sliding key groove 701. A thrust bearing 15 coaxial with the worm gear 7 is installed on the lower side of the worm gear 7. The thrust bearing 15 is installed on the annular tray 16. The annular tray 16 is fixedly connected to the cantilever 9 through the tray bracket 17. The thrust bearing is supported by the annular tray, and the thrust bearing supports the worm gear, playing a role in assisting the support of the worm gear. The worm gear rotates self, drives the locking sleeve to rotate and move into the bearing sleeve, but the worm gear does not move up and down. The sliding sleeve at the lower end of the locking sleeve moves up and down relative to the worm gear, realizing the locking and loosening of the locking sleeve.

[0024] Embodiment 2: A method for adjusting the bearing clearance of the bearing support device of a medicinal granule mixer is as follows: When the lower tapered roller bearing is worn, it will cause the stirring drive shaft to jump, and then be reflected in the jump of the driven large pulley fixedly connected to the lower end of the stirring drive shaft. When the detection sensor detects that the jump value of the driven large pulley is greater than the set threshold, the control deceleration motor is started to drive the worm to rotate towards the direction of locking the locking sleeve, thereby driving the worm gear to rotate. The worm gear rotates self, drives the locking sleeve to rotate and move into the bearing sleeve, and the locking sleeve drives the inner ring of the lower tapered roller bearing to move inwards. When the jump amount detected by the detection sensor is less than the set threshold, the clearance between the inner ring and the rollers of the tapered roller bearing reaches the design requirements of the tapered roller bearing, and the deceleration motor action is stopped.

Claims

1. A bearing support device for a medicinal granule mixer, characterized in that: The invention comprises two tapered roller bearings (1), a bearing sleeve (2) and a locking sleeve (3), wherein the two tapered roller bearings (1) are connected to a stirring drive shaft (4) and arranged up and down, the bearing sleeve (2) is sleeved outside the two tapered roller bearings (1) and a flange (5) is arranged at the upper end, the flange (5) is fixedly connected to a supporting platform (6), the locking sleeve (3) is spirally connected inside the lower end of the bearing sleeve (2), the locking sleeve (3) is movably sleeved outside the stirring drive shaft (4) and the upper end can abut against the lower end. The inner ring of the tapered roller bearing (1) on the side, the lower end of the locking sleeve (3) is vertically movably connected to an annular worm gear (7) coaxial with the annular worm gear (7), the annular worm gear (7) is movably sleeved outside the stirring drive shaft (4), and a worm (8) meshing with the annular worm gear (7) is horizontally rotated on a cantilever frame (9), the cantilever frame (9) is fixedly connected to the bottom of the support platform (6), the worm (8) is connected to a reduction motor (10), and the reduction motor (10) is installed on the support platform (6) through a motor frame.

2. A bearing support device for a medicinal granule mixer according to claim 1, characterized in that: A bearing oiling mechanism (11) is installed on the side wall of the bearing sleeve (2), wherein the bearing oiling mechanism (11) comprises an oiling pipe (1101), an oiling seat (1102), an oiling solenoid valve (1103) and an oil storage tank (1104); the oil storage tank (1104) is installed on the top of the outer end of the oiling seat (1102); the oiling seat (1102) is fixedly connected to the bearing sleeve (2); an oil channel (1105) is arranged inside the oiling seat (1102); the oil channel (1105) The oil inlet end of the oil channel (1105) is connected to the oil outlet of the oil storage tank (1104), and the oil outlet end of the oil channel (1105) is connected to the filling pipe (1101). The filling pipe (1101) extends from a through hole (1106) provided on the side wall of the bearing sleeve (2) and is located above the lower tapered roller bearing (1) with its end facing the retaining frame of the tapered roller bearing (1). The filling solenoid valve (1103) is installed on the filling seat (1102) to control the opening and closing of the oil channel (1105).

3. A bearing support device for a medicinal granule mixer according to claim 2, characterized in that: The distance between the oil filling pipe (1101) and the retaining frame is 5-10 mm.

4. A bearing support device for a medicinal granule mixer according to claim 2, characterized in that: The refueling pipe (1101) is arranged at an angle.

5. A bearing support device for a medicinal granule mixer according to claim 2, characterized in that: A thermocouple sensor (1107) is mounted on the bearing sleeve (2), and an inner section of the thermocouple sensor (1107) contacts an outer ring of the tapered roller bearing (1) on the lower side.

6. A bearing support device for a medicinal granule mixer according to claim 1, characterized in that: The invention also comprises a swing detection mechanism (12), wherein the swing detection mechanism (12) comprises a detection sensor (1201), a vertical tube (1202), a connecting plate (1203) and a T-slot plate (1204), wherein the detection sensor (1201) is mounted at the lower end of the vertical tube (1202) and the probe is directly opposite to the edge of a driven belt pulley (14) fixedly connected to the lower end of the stirring drive shaft (4), and the upper end of the vertical tube (1202) is fixedly connected to the connecting plate (1203), the connecting plate (1203) is fixedly connected to the T-slot plate (1204) via a T-screw (1205) and a nut (1206), the T-slot plate (1204) is fixedly connected to the bottom of the support platform (6), and the neutral plane of the two rows of T-slots of the T-slot plate (1204) is coplanar with the stirring drive shaft (4).

7. A bearing support device for a medicinal granule mixer according to claim 6, characterized in that: The signal line of the detection sensor (1201) passes through the interior of the vertical tube (1202) and is led out from a wire outlet hole (1207) arranged near the top.

8. A bearing support device for a medicinal granule mixer according to claim 1, characterized in that: A vibration sensor (13) is also mounted on the bearing sleeve (2).

9. A bearing support device for a medicinal granule mixer according to claim 1, characterized in that: The worm gear mechanism composed of the worm wheel (7) and the worm (8) adopts a self-locking worm gear mechanism, wherein a sliding key slot (701) is arranged in the worm wheel (7), a sliding sleeve (301) is arranged at the lower end of the locking sleeve (3), an outwardly protruding sliding key (302) is arranged on the sliding sleeve (301), and the sliding key (302) is movably embedded in the sliding key slot (701), and a thrust bearing (15) coaxial with the worm wheel (7) is installed at the lower side of the worm wheel (7), and the thrust bearing (15) is installed on the annular tray (16), and the annular tray (16) is fixedly connected to the cantilever frame (9) through the tray frame (17).

10. The method for adjusting the bearing clearance of a bearing support device of a medicinal granule mixer according to claim 1, characterized in that: When the tapered roller bearing on the lower side is worn, it will cause the stirring drive shaft to jump, which is then mapped to the jumping of the driven belt pulley fixed to the lower end of the stirring drive shaft. When the detection sensor detects that the jumping value of the driven belt pulley is greater than the set threshold, the reduction motor is controlled to start, and the worm is driven to rotate in the direction of the locking sleeve, thereby driving the worm wheel to rotate. The worm wheel rotates on its own, driving the locking sleeve to rotate and move into the bearing sleeve. The locking sleeve drives the inner ring of the tapered roller bearing on the lower side to move inward. When the jumping amount detected by the detection sensor is less than the set threshold, the gap between the inner ring and the roller of the tapered roller bearing reaches the design requirement of the tapered roller bearing, and the reduction motor stops.

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