A drying device for cleaning and drying medium and large bearings

Abstract

The present invention discloses a device for drying medium and large bearings after cleaning, which also includes: a material channel, which is connected to a conveyor line and guides the bearings from a horizontal state to a vertical state; a loading assembly, which is arranged at the end of the material channel and pushes the bearings to a drying device (slowly loaded); the drying device includes a rotating platform, a lower seat arranged on the rotating platform and an upper seat that can move vertically relative to the lower seat, the upper seat and the lower seat are relatively closed and form a cavity for accommodating the bearing, the upper seat is driven to rotate by the lower seat, and a positioning assembly and a driving assembly that are in rolling contact with the outer ring of the vertical bearing are arranged in the lower seat and the upper seat, the positioning assembly is coaxially arranged with the bearing, and the driving assembly drives the positioning assembly to rotate so that the outer ring of the bearing rotates around its central axis; the rotating platform drives the upper seat and the lower seat to rotate so that the bearing rotates around the axis of the rotating platform, thereby greatly increasing the cleaning effect of the bearing.

Description

Technical Field

[0001] The invention relates to the technical field of bearing cleaning, and in particular to a drying device for cleaning and drying medium and large bearings. Background Art

[0002] After finishing the groove of the inner ring of the bearing, the inner ring of the bearing needs to be cleaned to remove the grinding powder inside the inner and outer rings, and then the inner ring, outer ring and rolling element are assembled into one.

[0003] However, after the bearing is cleaned, cleaning oil still remains in the inner and outer rings and the retaining cage. The cleaning oil is an oily substance, and the residual cleaning oil is easy to carry fine particulate matter, especially in medium and large bearings, which have more residual cleaning oil. A method of removing oil from the bearing after cleaning in the prior art is usually to dry and rotate the residual cleaning oil in the inner and outer rings of the bearing. The current bearing drying equipment usually places the bearing flat, drives the bearing through a rotating device, and rotates the bearing as a whole around its axis. Since the cleaning oil is volatilized, the fine particles carried by the cleaning oil are easy to get stuck in the rolling assembly of the bearing, thereby causing bumps and noise, and generating groove defects in the inner and outer rings, affecting the qualified rate of the bearing. In addition, the bearing drying device in the prior art has a low degree of automation, and is not efficient in dealing with medium and large bearings. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a drying device for washing medium and large bearings, which can effectively clean medium and large bearings and has a high degree of automation.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a drying device for washing and drying medium and large bearings, further comprising:

[0006] A material channel, which connects to the conveyor line and guides the bearing from a horizontal state to a vertical state;

[0007] A feeding assembly, which is arranged at the end of the material channel and pushes the bearing to the spin-drying device;

[0008] The drying device comprises a rotating platform, a lower seat arranged on the rotating platform and an upper seat which can move vertically relative to the lower seat, wherein the upper seat and the lower seat are relatively closed and form a cavity for accommodating a bearing, the upper seat is driven to rotate by the lower seat, and a positioning component and a driving component which are in rolling contact with the outer ring of the vertical bearing are arranged in the lower seat and the upper seat, and the positioning component is coaxially arranged with the bearing,

[0009] The driving assembly drives the positioning assembly to rotate so that the outer ring of the bearing rotates around its central axis; the rotating platform drives the upper seat and the lower seat to rotate so that the bearing rotates around the axis of the rotating platform.

[0010] Furthermore, the material channel includes an arc track for the horizontal bearing to slide into and a vertical track that matches the end surface of the bearing in a clearance manner, and the arc track is connected with the vertical track to keep the bearing in an upright state when falling;

[0011] The loading assembly includes a supporting cylinder and a pushing cylinder. The supporting cylinder extends into the material channel and supports the bearing in an upright state to descend to the bottom of the material channel. The pushing cylinder is penetrated in the material channel and pushes the bearing in the material channel to the lower seat. Through the above improvements, the conveying line of the arc track and the bearing is connected. When the bearing enters the arc track, it fits the end face of the arc track. At this time, the output end of the supporting cylinder extends out of the vertical track, so that when the bearing enters the vertical track, the output end of the supporting cylinder can support the bearing. The supporting cylinder is slowly retracted to realize the slow descent of the bearing and the conversion of the bearing from a horizontal state to a vertical state, thereby ensuring the stability and reliability of the bearing state switching. Moreover, under the condition of taking the same zero potential energy reference, the gravitational potential energy of the bearing in the upright state is greater than the gravitational potential energy of the bearing in the horizontal state, thereby improving the effect of drying the cleaning oil.

[0012] Furthermore, the lower seat includes a support platform arranged on the rotating platform and lower fixed plates arranged on both sides of the support platform. The pushing cylinder extends out and pushes the bearing to move between the two fixed plates. Through the above improvements, the bearing in an upright state is constrained between the two lower fixed plates, and the support platform supports the bottom of the bearing, so that the bearing always remains in an upright state during the spin-drying process.

[0013] Preferably, the lower fixed plate is provided with an opening through which the inner ring of the bearing and at least part of the rolling assembly are exposed, so that the cleaning oil and particles remaining in the bearing can be thrown out of the cavity.

[0014] Furthermore, the upper seat includes two upper fixing plates and a blocking arm arranged outside the upper fixing plates;

[0015] The spin-drying device also includes a driven rotating shaft and a lifting platform, wherein the lifting platform is arranged above the lower seat, the driven rotating shaft is passed through the lifting platform and is connected to the lower fixed plate, the blocking arm descends with the lifting platform and extends between the two lower fixed plates. Through the above improvements, during the spin-drying process, the blocking arm limits the forward and backward displacement of the bearing during the spin-drying process, and after the upper seat and the lower seat are closed, the synchronous rotation of the upper seat and the lower seat is realized through the driven rotating shaft.

[0016] Furthermore, a brake block is fixedly provided on the top of the driven rotating shaft, and at least one brake cylinder is provided on the lifting platform. The output end of the brake cylinder extends out and abuts against the brake block to brake the rotation of the bearing on the axis of the rotating platform. Through the above improvements, after the bearing is dried, the brake cylinder extends out to prevent the brake block on the driven rotating shaft from rotating.

[0017] Furthermore, the positioning assembly includes two active rollers inserted in the lower seat and two driven rollers arranged in the upper seat, the lower end of the bearing is tangent to the two active rollers, the upper end of the bearing is tangent to the two driven rollers, and the active roller is driven to rotate by the driving assembly. Through the above improvements, the lifting platform descends so that the driven roller in the upper seat is against the upper end of the bearing, giving the bearing a certain pressure, thereby positioning the bearing between the active roller and the driven roller, and the driving assembly drives the active roller to rotate and then drives the outer ring of the bearing and the driven roller to rotate.

[0018] Furthermore, a vertically arranged driving shaft, a first transmission mechanism and a first driving motor for driving the driving shaft to rotate, and a second transmission mechanism and a second driving motor for driving the two driving rollers to rotate are connected to the bottom of the rotating platform, and a conductive slip ring is also provided at the bottom of the driving shaft, and the conductive wire of the conductive slip ring is connected to the second driving motor through the driving shaft.

[0019] Furthermore, a plurality of connecting columns are provided at intervals at the bottom of the upper fixing plate, and connecting holes for inserting the connecting columns are provided on the lower fixing plate. Through the above improvements, the transmission connection between the upper seat and the lower seat is realized by plugging and positioning the connecting columns and the connecting holes, so that the lower seat drives the upper seat to rotate synchronously.

[0020] Furthermore, the active roller and the driven roller partially extend out of the cavity, and the lower fixed plate is close to the two end surfaces of the bearing, and the retaining arm is close to the two side ends of the bearing. The driven roller descends with the lifting platform and presses the bearing onto the active roller.

[0021] Furthermore, it also includes a positioning platform and a discharge channel that cooperates with the clearance of the bearing end surface. The discharge channel is arranged on the side of the spin-drying device away from the material channel. The positioning platform is provided with a seat for placing the lower end part of the bearing. The positioning platform is arranged at the output end of the supporting cylinder and in the discharge channel. The pushing cylinder pushes the bearing to the positioning platform of the material channel. Through the above improvements, the state stability of the bearing in the material channel, the spin-drying device and the discharge channel is improved, thereby ensuring the stable operation of the bearing pushed by the pushing cylinder in the travel direction.

[0022] Compared with the prior art, the present invention has the following advantages and beneficial effects: before entering the spin-drying device, the bearing placed in a horizontal state on the conveyor line is first turned into an upright state through the material channel and enters the lower seat, and the bearing completes the initial positioning through the positioning component in the lower seat, and then the upper seat descends and is relatively closed with the lower seat, so that the positioning components in the upper seat and the lower seat are abutted against the outer ring of the bearing to complete the secondary positioning, and the upper seat and the lower seat are closed to form a cavity that relatively closes the bearing, thereby ensuring the stability of the bearing state during the spin-drying process, and the lower seat is arranged on a rotating platform, and the rotating platform rotates to make the bearing in the lower seat rotate as a whole, so that the bearing rotates around the axis of the rotating platform. The upper seat and the lower seat are connected by transmission to realize rotation. At the same time, when the rotating platform rotates, the driving component on the lower seat drives the active roller to rotate, so as to ensure the stability of the bearing in the upright state in the lower seat and realize the rotation of the bearing around its central axis. During the drying process, the outer ring of the bearing as a whole rotates around its central axis at the same time, so that the residual cleaning oil and particles on the bearing are subjected to two centrifugal forces directed to the center of the bearing, thereby effectively removing the residual cleaning oil and particles on the bearing, and the rotation speed of the rotating platform and the active roller is controllable, and a speed difference is formed between the bearing as a whole and the outer ring, which further improves the drying effect of the residual cleaning oil and particles on the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the material channel and the material loading assembly of the present invention;

[0025] Figure 3 is a schematic diagram of a spin-drying device of the present invention;

[0026] Figure 4 is a cross-sectional schematic diagram of the spin-drying device of the present invention;

[0027] Figure 5 It is a schematic diagram of the lower seat, the rotating platform and the driving assembly of the present invention;

[0028] Figure 6 It is a schematic diagram of the upper seat structure of the present invention;

[0029] Figure 7 is a schematic diagram of a first transmission mechanism and a first drive motor of the present invention;

[0030] Figure 8 A schematic diagram of an angle of the present invention;

[0031] In the figure: 1, material channel; 11, curved track; 12, vertical track; 13, enclosure; 2, feeding assembly; 21, supporting cylinder; 22, pushing cylinder; 3, drying device; 31, rotating platform; 32, lower seat; 321, supporting platform; 322, lower fixing plate; 323, connecting hole; 33, upper seat; 331, upper fixing plate; 332, blocking arm; 333, connecting column; 34, driven rotating shaft; 35, lifting platform; 36, lifting cylinder; 37, system moving block; 38, brake cylinder; 4, positioning assembly; 41, active roller; 42, driven roller; 5, driving assembly; 51, second transmission mechanism; 511, second drive motor; 512, transmission shaft; 513, mounting plate; 514, transmission gear; 515, driven gear; 6, driving shaft; 61, conductive slip ring; 7, first transmission mechanism; 71, first drive motor; 72, pulley; 73, belt; 8, positioning table; 81, receptacle; 9, discharge channel; DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be understood that although the terms upper, middle, lower, top, end, etc. appear in this article to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for easy understanding, and are not used to define any direction or order limitation.

[0034] like Figure 1-8 As shown, a drying device for washing and drying medium and large bearings further comprises:

[0035] Material channel 1 is connected to the conveyor line, and a passage is provided inside the material channel 1 for bearings to enter. After the horizontal bearing enters the material channel 1, it slowly falls down under the guidance of the track inside the material channel 1 and gradually changes to an upright state;

[0036] A feeding assembly 2 is provided at the end of the material channel 1 and pushes the bearing to the spin-drying device 3, that is, the feeding port of the material channel 1 is located above the bearing spin-drying position;

[0037] The drying device 3 comprises a rotating platform 31, a lower seat 32 disposed on the rotating platform 31, and an upper seat 33 which can move vertically relative to the lower seat 32. The upper seat 33 descends and is relatively closed with the lower seat 32. The upper seat 33 and the lower seat 32 maintain a transmission state, and the upper seat 33 and the lower seat 32 are closed to form a cavity for accommodating the bearing. The upper seat 33 is driven to rotate by the lower seat 32, and a positioning component 4 and a driving component 5 which are in rolling contact with the outer ring of the vertical bearing are provided in the lower seat 32 and the upper seat 33. The positioning component 4 is coaxially arranged with the bearing;

[0038] The driving assembly 5 drives the positioning assembly 4 to rotate so that the outer ring of the bearing rotates around its central axis; the rotating platform 31 drives the upper seat 33 and the lower seat 32 to rotate so that the bearing rotates around the axis of the rotating platform 31.

[0039] like Figure 1 and Figure 2 As shown, the material channel 1 includes an arc track 11 for the horizontal bearing to slide into and a vertical track 12 that is clearance-matched with the end surface of the bearing. The arc track 11 is connected with the vertical track 12 to keep the bearing in an upright state while falling. A surrounding plate 13 is also provided on the outer side of the arc track 11 and the vertical track 12, so that the falling process of the bearing is carried out in a relatively closed material channel 1, wherein the surrounding plate 13 encloses and forms a channel, the upper part of the channel is a large expansion opening that can allow the bearing to flip from a horizontal state to a vertical state, and the lower part of the channel gradually closes until it can accommodate the falling of the vertical bearing.

[0040] The loading component 2 includes a supporting cylinder 21 and a pushing cylinder 22. The supporting cylinder 21 extends into the material channel 1 and supports the bearing in an upright state to descend to the bottom of the material channel 1. The pushing cylinder 22 is penetrated in the material channel 1 and pushes the bearing in the material channel 1 into the lower seat 32. The arc track 11 is connected with the conveying line of the bearing. When the bearing enters the arc track 11, it fits the end surface of the arc track 11. At this time, the output end of the supporting cylinder 21 extends out of the vertical track 12, so that when the bearing enters the vertical track 12, the output end of the supporting cylinder 21 can support the bearing. The supporting cylinder 21 is slowly retracted to realize the slow descent of the bearing and the conversion of the bearing from a horizontal state to a vertical state, thereby ensuring the stability and reliability of the bearing state switching. Moreover, under the condition of taking the same zero potential energy reference, the gravitational potential energy of the bearing in the upright state is greater than the gravitational potential energy of the bearing in the horizontal state, thereby improving the effect of drying the cleaning oil.

[0041] Specifically, the lower seat 32 includes a support platform 321 arranged on the rotating platform 31 and lower fixed plates 322 arranged on both sides of the support platform 321. The pushing cylinder 22 extends out and pushes the bearing to move between the two fixed plates, constraining the upright bearing between the two lower fixed plates 322. The support platform 321 supports the bottom of the bearing, so that the bearing always remains upright during the spin-drying process.

[0042] Preferably, the lower fixed plate 322 is provided with an opening for exposing the inner ring of the bearing and at least a portion of the rolling assembly, so that the cleaning oil and particles remaining in the bearing can be thrown out of the cavity.

[0043] like Figure 6 As shown, specifically, the upper seat 33 includes two upper fixing plates 331 and a blocking arm 332 disposed outside the upper fixing plates 331;

[0044] The spin-drying device 3 also includes a driven rotating shaft 34 and a lifting platform 35. The lifting platform 35 is arranged above the lower seat 32. A lifting cylinder 36 is arranged above the lifting platform 35. The driven rotating shaft 34 is passed through the lifting platform 35 and is connected to the lower fixed plate 322. The blocking arm 332 descends with the lifting platform 35 and extends between the two lower fixed plates 322. During the spin-drying process, the blocking arm 332 limits the forward and backward displacement of the bearing during the spin-drying process. After the upper seat 33 and the lower seat 32 are closed, the synchronous rotation of the upper seat 33 and the lower seat 32 is realized through the driven rotating shaft 34.

[0045] Specifically, a brake block 37 is fixedly provided on the top of the driven rotating shaft 34, and two brake cylinders 38 are provided on the lifting platform 35. The output end of the brake cylinder 38 extends out and abuts against the brake block 37 to brake the rotation of the bearing in the axial direction of the rotating platform 31. After the bearing is dried, the brake cylinder 38 extends out to prevent the brake block 37 on the driven rotating shaft 34 from rotating.

[0046] like Figures 3 to 6 As shown, the positioning assembly 4 includes two active rollers 41 inserted into the lower seat 32 and two driven rollers 42 arranged in the upper seat 33. The driven rollers 42 are arranged between the two upper fixed plates 331. The lower end of the bearing is tangent to the two active rollers 41, and the upper end of the bearing is tangent to the two driven rollers 42. The active roller 41 is driven to rotate by the driving assembly 5, and the lifting platform 35 descends so that the driven roller 42 in the upper seat 33 is against the upper end of the bearing, giving the bearing a certain pressure, thereby positioning the bearing between the active roller 41 and the driven roller 42. The driving assembly 5 drives the active roller 41 to rotate and then drives the outer ring of the bearing and the driven roller 42 to rotate.

[0047] like Figures 3 to 5 and Figure 7 As shown in the figure, as an embodiment of driving the rotating platform 31 and the positioning assembly 4, a vertically arranged driving shaft 6, a first transmission mechanism 7 and a first driving motor 71 for driving the driving shaft 6 to rotate are connected to the bottom of the rotating platform 31, and the driving assembly 5 includes a second transmission mechanism 51 and a second driving motor 511 for driving the two driving rollers 41 to rotate.

[0048] The first transmission mechanism 7 includes a belt 73 wheel 72 arranged at the output end of the first drive motor 71 and the bottom of the driving shaft 6, and a belt 73 wound around the two belt 73 wheels 72; the second drive motor 511 is axially penetrated on the support platform 321 along the axial direction of the vertical bearing, and the second transmission mechanism 51 includes two transmission shafts 512 that are axially penetrated on the support platform 321 along the axial direction of the vertical bearing, and each transmission shaft 512 is provided with a driving roller 41, and both ends of the transmission shaft 512 extend out of the outside of the lower fixed plate 322, and mounting plates 513 are respectively provided on both ends of the transmission shaft 512, and a transmission gear 514 is sleeved on the end of the transmission shaft 512 away from the second drive motor 511, and a driving gear is sleeved on the output end of the second drive motor 511, and the second drive motor 511 drives the driven gear 515 to rotate through the driving gear, so that the transmission shaft 512 drives the driving roller 41 to rotate.

[0049] Preferably, a conductive slip ring 61 is further provided at the bottom of the driving shaft 6. The middle part of the driving shaft 6 is hollow. The wire of the conductive slip ring 61 is connected to the second drive motor 511 through the driving shaft 6. The information exchange of the rotational speeds of the first drive motor 71 and the second drive motor 511 is achieved through the control of the conductive slip ring 61.

[0050] like Figure 6 As shown, a plurality of connecting columns 333 are provided at intervals at the bottom of the upper fixing plate 331, and a connecting hole 323 for inserting the connecting column 333 is provided on the lower fixing plate 322, and the transmission connection between the upper seat 33 and the lower seat 32 is realized by plugging and positioning the connecting column 333 and the connecting hole 323, so that the lower seat 32 drives the upper seat 33 to rotate synchronously.

[0051] Specifically, the active roller 41 and the driven roller 42 partially extend out of the cavity, and the lower fixed plate 322 is close to the two end surfaces of the bearing, and the retaining arm 332 is close to the two side ends of the bearing. The driven roller 42 descends with the lifting platform 35 and presses the bearing onto the active roller 41.

[0052] like Figure 8 As shown, it also includes a positioning platform 8 and a discharge channel 9 that matches the clearance with the bearing end surface. The discharge channel 9 is arranged on the side of the spin-drying device 3 away from the material channel 1. The positioning platform 8 is provided with a seat 81 for the lower end part of the bearing to be placed. The positioning platform 8 is arranged at the output end of the supporting cylinder 21 and in the discharge channel 9. The pushing cylinder 22 pushes the bearing to the positioning platform 8 of the material channel 1, thereby improving the state stability of the bearing in the material channel 1, the spin-drying device 3 and the discharge channel 9, thereby ensuring that the pushing cylinder 22 pushes the bearing to run stably in the moving direction.

[0053] Bearing unloading: The bearing enters the material channel 1 through the conveyor line. At this time, the supporting cylinder 21 extends, and the bearing stands on the positioning table 8 at the output end of the supporting cylinder 21 in an upright state. After the supporting cylinder 21 is retracted, the pushing cylinder 22 extends and pushes the bearing to the two active rollers 41 of the lower seat 32;

[0054] Drying positioning: the lifting cylinder 36 drives the lower seat 32 to descend, and the connecting column 333 on the lower seat 32 is inserted into the connecting hole 323 on the upper seat 33. At this time, the driven roller 42 is pressed on the upper part of the bearing, and the blocking arm 332 extends between the two lower fixing plates 322;

[0055] Bearing drying: The first driving motor 71 drives the rotating platform 31 to rotate through the driving shaft 6 and the first transmission mechanism 7, and the lower seat 32 drives the upper seat 33 and the driven rotating shaft 34 to rotate, and the bearing rotates around its radial axis in the upright state;

[0056] The second driving motor 511 drives the transmission gear 514 of the second transmission mechanism 51 to rotate, and the transmission gear 514 drives the driven gear 515 to rotate, and the transmission shaft 512 is driven to rotate by the driven gear 515, so that the active roller 41 rotates, and the outer ring drives the driven roller 42 to rotate synchronously, so that the outer ring of the bearing rotates around the central axis of its upright state;

[0057] Bearing discharge: the first drive motor 71 and the second drive motor 511 stop working, the brake cylinder 38 extends to block the brake block 37, stops the rotation of the driven rotating shaft 34, the lifting cylinder 36 returns, the pushing cylinder 22 pushes the next bearing, and the next bearing pushes the bearing in the lower seat 32 into the discharge channel 9, and the next bearing enters the lower seat 32;

[0058] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A drying device for medium and large bearings after cleaning, characterized in that: include A material channel (1), the material channel (1) is connected to the conveyor line and guides the bearing from a horizontal state to a vertical state; A feeding assembly (2), the feeding assembly (2) being arranged at the end of the material channel (1) and pushing the bearing to the spin-drying device (3); The spin drying device (3) comprises a rotating platform (31), a lower seat (32) arranged on the rotating platform (31), and an upper seat (33) which can move vertically relative to the lower seat (32), wherein the upper seat (33) and the lower seat (32) are relatively closed and form a cavity for accommodating a bearing, and a positioning assembly (4) which is in rolling contact with an outer ring of an upright bearing and a driving assembly (5) for driving the positioning assembly (4) to rotate are arranged in the lower seat (32) and the upper seat (33); The positioning assembly (4) is coaxially arranged with the bearing so that the outer ring of the bearing rotates around its central axis; the rotating platform (31) drives the upper seat (33) and the lower seat (32) to rotate so that the bearing rotates around the axis of the rotating platform (31); The material channel (1) comprises an arc track (11) for a horizontal bearing to slide into and a vertical track (12) that is clearance-matched with the end surface of the bearing, and the arc track (11) is connected with the vertical track (12) so that the bearing remains in an upright state when falling; The loading assembly (2) comprises a supporting cylinder (21) and a pushing cylinder (22), wherein the supporting cylinder (21) extends into the material channel (1) and supports the upright bearing to descend to the bottom of the material channel (1), wherein the pushing cylinder (22) is arranged in the material channel (1) and pushes the bearing in the material channel (1) into the lower seat (32), wherein the lower seat (32) comprises a supporting platform (321) arranged on the rotating platform (31) and lower fixing plates (322) arranged on both sides of the supporting platform (321), wherein the lower fixing plates (322) are provided with openings for exposing the inner ring of the bearing and at least part of the rolling assembly, wherein the pushing cylinder (22) extends out and pushes the bearing to move between the two fixing plates, and the upper seat (33) comprises two upper fixing plates (331) and a stop arm (332) arranged on the outer side of the upper fixing plates (331); The spin drying device (3) further comprises a driven rotating shaft (34) and a lifting platform (35), wherein the lifting platform (35) is arranged above the lower seat (32), the driven rotating shaft (34) is passed through the lifting platform (35) and is connected to the lower fixed plate (322), and the blocking arm (332) descends with the lifting platform (35) and extends between the two lower fixed plates (322).

2. The drying device for washing and drying large and medium-sized bearings according to claim 1 is characterized in that: A brake block (37) is also fixedly provided on the top of the driven rotating shaft (34), and at least one brake cylinder (38) is provided on the lifting platform (35). The output end of the brake cylinder (38) extends out and abuts against the brake block (37) to brake the rotation of the bearing on the axis of the rotating platform (31).

3. The drying device for washing and drying medium and large bearings according to claim 1, characterized in that: The positioning assembly (4) comprises two active rollers (41) inserted into the lower seat (32) and two driven rollers (42) arranged in the upper seat (33); the lower end of the bearing is tangent to the two active rollers (41); the upper end of the bearing is tangent to the two driven rollers (42); and the active rollers (41) are driven to rotate by the driving assembly (5).

4. The drying device for washing and drying large and medium-sized bearings according to claim 1 is characterized in that: The bottom of the rotating platform (31) is connected to a vertically arranged driving shaft (6), a first transmission mechanism (7) and a first driving motor (71) for driving the driving shaft (6) to rotate, the driving assembly (5) comprises a second transmission mechanism (51) and a second driving motor (511) for driving the two driving rollers (41) to rotate, and a conductive slip ring (61) is also provided at the bottom of the driving shaft (6), and a wire of the conductive slip ring (61) is connected to the second driving motor (511) through the driving shaft (6).

5. The drying device for washing and drying large and medium-sized bearings according to claim 1 is characterized in that: A plurality of connection columns (333) are arranged at intervals on the bottom of the upper fixing plate (331), and a connection hole (323) for inserting the connection column (333) is provided on the lower fixing plate (322).

6. The drying device for washing and drying medium and large bearings according to claim 3, characterized in that: The active roller (41) and the driven roller (42) partially extend out of the cavity, and the lower fixed plate (322) is close to the two end surfaces of the bearing, and the blocking arm (332) is close to the two side ends of the bearing. The driven roller (42) descends with the lifting platform (35) and presses the bearing onto the active roller (41).

7. The drying device for washing and drying large and medium-sized bearings according to claim 1 is characterized in that: It also includes a positioning platform (8) and a discharge channel (9) with a clearance fit with the end surface of the bearing. The discharge channel (9) is arranged on a side of the spin-drying device (3) away from the material channel (1). A seat (81) is provided on the positioning platform (8) for the lower end portion of the bearing to be placed. The positioning platform (8) is arranged at the output end of the supporting cylinder (21) and in the discharge channel (9). The pushing cylinder (22) pushes the bearing into the positioning platform (8) of the material channel (1).

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