A large turntable bearing assembly workbench

Abstract

The present invention relates to the field of assembly equipment, and specifically relates to a large turntable bearing assembly workbench, which includes a support transmission device. A bearing device is slidably inserted into the interior of the support transmission device. A matching buckle device is also slidably inserted into the interior of the support transmission device, and the matching buckle device is located below the bearing device. The matching buckle device includes a sliding ring, a return spring, a sliding key, a plastic contact piece, a converging clamping plate, a connecting rope and a contact bump. The connecting rope is fixedly connected to the top end of the sliding ring, and the connecting rope is distributed in a ring shape. The sliding key is fixedly connected to the end of the connecting rope away from the sliding ring. The return spring is fixedly connected to the end of the sliding key close to the sliding ring. Through the coordinated linkage of the bearing device, the support transmission device and the matching buckle device, the accuracy of the inner and outer rings of the turntable bearing during assembly can be improved, and the phenomenon of the turntable bearing falling during assembly can be prevented.

Description

Technical Field

[0001] The present invention relates to the field of assembly equipment, and more specifically to a large turntable bearing assembly workbench. Background Art

[0002] A turntable bearing is a special large bearing that can simultaneously bear large axial loads, radial loads, overturning moments and other combined loads, integrating multiple functions such as support, rotation, transmission, and fixation. The main function of the turntable bearing is to connect the upper and lower parts of the machine together, while supporting the weight of the upper part and the loads generated during the operation of the machine, and enabling the upper part of the machine to rotate relative to the lower part. There are still some problems in the assembly of existing turntable bearings, such as:

[0003] When installing existing turntable bearings, they are mostly placed on temporary simple brackets. After the turntable bearing is hoisted and placed, due to the shaking caused by personnel during the assembly of the turntable bearing, the turntable bearing is very likely to fall off the bracket, resulting in injury to the feet of personnel. At the same time, the existing simple brackets lack an adaptive positioning device, resulting in the phenomenon that the turntable bearing cannot be accurately positioned during hoisting and assembly, leading to the phenomenon of bumping between the inner and outer rings of the turntable bearing during the assembly process. Therefore, an equipment is needed to improve the above problems. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a large turntable bearing assembly workbench.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a large turntable bearing assembly workbench, including a support and transmission device, in which a bearing device is slidably inserted. A cooperation and snap device is also slidably inserted into the support and transmission device, and the cooperation and snap device is located below the bearing device. The cooperation and snap device includes a sliding ring, a return spring, a sliding key, a plastic contact piece, a converging clamping plate, a connecting rope and a contact convex block. The connecting rope is fixedly connected to the top of the sliding ring, and the connecting rope is distributed in a ring shape. The sliding key is fixedly connected to the end of the connecting rope away from the sliding ring. The return spring is fixedly connected to the end of the sliding key close to the sliding ring. The converging clamping plate is fixedly connected to the other end of the sliding key. The plastic contact piece is fixedly connected to the inner top end of the converging clamping plate. The contact convex blocks are symmetrically and fixedly connected to the bottom end of the sliding ring.

[0006] Preferably, the carrying device includes a magnetic suction roller, a positioning sleeve, a first buffer spring, a sliding insertion rod, a contact extrusion side plate, a strengthening bracket, a nylon contact brush, a rotating ring, a placement table, an insertion hole, a gear ring, a positioning support rod, a second buffer spring, and an extrusion sleeve. The strengthening bracket is fixedly installed at the top end of the placement table, and the strengthening brackets are distributed in a ring shape. The positioning sleeve is slidably inserted into the inner part of the top end of the strengthening bracket. The magnetic suction roller is rotatably connected to the inner part of one end of the positioning sleeve. The first buffer spring is fixedly connected to the inner part of the other end of the positioning sleeve. The sliding insertion rod is fixedly connected to the end of the first buffer spring away from the positioning sleeve. The contact extrusion side plate is fixedly connected to the side end of the sliding insertion rod. The extrusion sleeve is fixedly installed at the center of the bottom end of the placement table, and the insertion hole is opened at the center of the placement table and the extrusion sleeve. The positioning support rods are symmetrically and fixedly installed at the bottom end of the placement table. The second buffer spring is fixedly connected to the bottom end of the positioning support rod. The gear ring is fixedly connected to the bottom end of the rotating ring. The rotating ring is rotatably connected to the inner part of the placement table. The nylon contact brushes are equidistantly and fixedly connected to the rotating ring.

[0007] Preferably, the support and transmission device includes a push button switch, a central support rod, a sliding groove, a support base, a wire outlet groove, a docking groove, a limiting conical rod, a limiting sealing plate, side sliding grooves, placement holes, gears, motors, and connecting wires. The sliding groove is opened at the center of the top end of the support base. The central support rod is fixedly installed at the center of the inner part of the sliding groove. The limiting conical rod is fixedly installed at the top end of the central support rod. The side sliding grooves are symmetrically opened on the side ends of the limiting conical rod. The limiting sealing plate is fixedly connected to the center of the top end of the limiting conical rod. The docking grooves are symmetrically opened in the inner parts of the side ends of the support base. The wire outlet grooves are symmetrically opened between the docking grooves and the sliding groove. The placement holes are symmetrically opened at the four corners of the top end of the support base. The motors are symmetrically and fixedly installed on the side ends of the support base. The gears are fixedly installed on the motors. The push button switches are symmetrically and fixedly connected to the inner bottom ends of the sliding groove, and the connecting wires are fixedly connected between the motors and the push button switches.

[0008] Preferably, the magnetic suction roller is slidably clamped in the inner part of the side sliding groove. When the magnetic suction roller slides to the extreme position, it contacts the limiting sealing plate. The outer top end of the contact extrusion side plate is arranged in an arc shape. When the placement table moves downward to the extreme position, the gear ring contacts the gear.

[0009] Preferably, when the return spring maintains its normal state, the sliding key moves outward to the end in the docking groove. The extreme distance of the movement of the sliding key does not exceed the inner part of the docking groove. The height of the nylon contact brush is greater than the overall height of the placement table.

[0010] Preferably, the insertion holes, the extrusion sleeves and the sliding rings are respectively sleeved on the outer circle of the central support rod in a sliding manner. When the placement table moves downward to the limit position, the extrusion sleeve drives the sliding ring to squeeze and contact the convex block and insert it into the button switch, which can drive the sliding key to slide inside the docking groove.

[0011] Preferably, the bottom end of the contact extrusion side plate is flush with the top end of the placement table. The bottom end of the sliding insertion rod is fixedly connected with a reinforcing rib. The second buffer spring is fixedly connected to the inner bottom end of the placement hole, and the alignment support rod is located inside the placement hole.

[0012] Advantages of the present invention:

[0013] First, for a large turntable bearing assembly workbench described in the present invention, through the setting of the bearing device, the turntable bearing can be supported for placement. By fixedly installing an adaptive positioning device inside the bearing device, it is convenient for the turntable bearing to be hoisted and docked. By installing a bottom cleaning device inside the bearing device, the bottom end of the turntable bearing can be cleaned, preventing the phenomenon of bottom end bruising when the turntable bearing is placed.

[0014] Second, for a large turntable bearing assembly workbench described in the present invention, through the setting of the support transmission device, the bearing device can be supported for support work. By fixedly installing a linkage trigger device inside the support transmission device, when the bearing device moves downward, it can drive the transmission device inside the support transmission device to start, so as to drive the bottom cleaning device inside the bearing device to start. When the bearing device moves downward, it can drive the cooperation buckle device to move inward at the same time, so as to complete the positioning and buckling work of the turntable bearing, facilitating the user to assemble and dock the turntable bearing. Description of the drawings

[0015] The present invention will be further described below with reference to the drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the bearing device of the present invention;

[0018] Figure 3 It is a schematic diagram of the bottom end structure of the bearing device of the present invention;

[0019] Figure 4 It is a schematic diagram of the fully-sectioned structure of the support transmission device of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the cooperation buckle device of the present invention;

[0021] Figure 6Schematic diagram of the bottom structure of the mating buckle device of the present invention.

[0022] In the figure: 1 - bearing device, 2 - support transmission device, 3 - mating buckle device, 4 - magnetic suction roller, 5 - positioning sleeve, 6 - first buffer spring, 7 - sliding plug rod, 8 - contact extrusion side plate, 9 - reinforcement bracket, 10 - nylon contact brush, 11 - rotating ring, 12 - placement table, 13 - insertion hole, 14 - gear ring, 15 - alignment support rod, 16 - second buffer spring, 17 - extrusion sleeve, 18 - push button switch, 19 - central support rod, 20 - sliding groove, 21 - support base, 22 - wire outlet groove, 23 - docking groove, 24 - limiting conical rod, 25 - limiting sealing plate, 26 - side sliding groove, 27 - placement hole, 28 - gear, 29 - motor, 30 - connecting wire, 31 - sliding ring, 32 - return spring, 33 - sliding key, 34 - plastic contact piece, 35 - gathering clamping plate, 36 - connecting rope, 37 - contact bump. Detailed implementation manners

[0023] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0024] As Figures 1-6 shown, a large turntable bearing assembly workbench of the present invention includes a support transmission device 2. A bearing device 1 is slidably inserted into the interior of the support transmission device 2. A mating buckle device 3 is slidably inserted into the interior of the support transmission device 2, and the mating buckle device 3 is located below the bearing device 1. The mating buckle device 3 includes a sliding ring 31, a return spring 32, a sliding key 33, a plastic contact piece 34, a gathering clamping plate 35, a connecting rope 36 and a contact bump 37. The connecting rope 36 is fixedly connected to the top end of the sliding ring 31, and the connecting rope 36 is annularly distributed. The sliding key 33 is fixedly connected to the end of the connecting rope 36 away from the sliding ring 31. The return spring 32 is fixedly connected to the end of the sliding key 33 close to the sliding ring 31. The gathering clamping plate 35 is fixedly connected to the other end of the sliding key 33. The plastic contact piece 34 is fixedly connected to the inner top end of the gathering clamping plate 35. The contact bumps 37 are symmetrically fixedly connected to the bottom end of the sliding ring 31.

[0025] The carrying device 1 includes a magnetic roller 4, a positioning sleeve 5, a first buffer spring 6, a sliding rod 7, a contact extrusion side plate 8, a reinforcement bracket 9, a nylon contact brush 10, a rotating circle 11, a placement table 12, an insertion hole 13, a gear ring 14, an alignment support rod 15, a second buffer spring 16 and an extrusion sleeve 17. The reinforcement bracket 9 is fixedly installed on the top of the placement table 12, and the reinforcement bracket 9 is distributed in an annular shape. The positioning sleeve 5 is slidably inserted inside the top of the reinforcement bracket 9, the magnetic roller 4 is rotatably connected to the inside of one end of the positioning sleeve 5, the first buffer spring 6 is fixedly connected to the inside of the other end of the positioning sleeve 5, the sliding rod 7 is fixedly connected to the end of the first buffer spring 6 away from the positioning sleeve 5, and the contact extrusion side plate 8 is fixedly connected to the sliding rod 7. At the side end of the movable insertion rod 7, the extrusion sleeve 17 is fixedly installed at the bottom center of the placement table 12, and the insertion hole 13 is opened at the internal center of the placement table 12 and the extrusion sleeve 17, the alignment support rod 15 is symmetrically fixedly installed at the bottom end of the placement table 12, the second buffer spring 16 is fixedly connected to the bottom end of the alignment support rod 15, the gear ring 14 is fixedly connected to the bottom end of the rotating circle 11, the rotating circle 11 is rotatably connected to the inside of the placement table 12, and the nylon contact brush 10 is equidistantly fixedly connected to the rotating circle 11. When the placement table 12 moves up and down, it can drive the magnetic roller 4 to move inside the side slide groove 26, so that the positioning sleeve 5 can be driven to squeeze the contact extrusion side plate 8 to move outward or inward, which is convenient for positioning and releasing the turntable bearing.

[0026] The supporting transmission device 2 includes a button switch 18, a central support rod 19, a sliding groove 20, a supporting base 21, a wire outlet groove 22, a docking groove 23, a limiting conical rod 24, a limiting sealing plate 25, a side sliding groove 26, a placement hole 27, a gear 28, a motor 29 and a connecting wire 30. The sliding groove 20 is opened at the top center of the supporting base 21, the central support rod 19 is fixedly installed at the inner center of the sliding groove 20, the limiting conical rod 24 is fixedly installed at the top of the central support rod 19, the side sliding groove 26 is symmetrically opened on the side end of the limiting conical rod 24, the limiting sealing plate 25 is fixedly connected to the top center of the limiting conical rod 24, and the docking groove 23 is symmetrically opened at the supporting base Inside the side end of the seat 21, the wire outlet groove 22 is symmetrically opened between the docking groove 23 and the sliding groove 20, the placement hole 27 is symmetrically opened at the four corners of the top of the support base 21, the motor 29 is symmetrically fixedly installed on the side end of the support base 21, the gear 28 is fixedly installed on the motor 29, the button switch 18 is symmetrically fixedly connected to the inner bottom end of the sliding groove 20, and the connecting wire 30 is fixedly connected between the motor 29 and the button switch 18. By contacting the protrusion 37, it is taken out or inserted from the inside of the button switch 18, so that the circuit inside the button switch 18 can be opened or closed, so that the motor 29 can complete the start-up and shutdown work, reducing energy waste.

[0027] The magnetic attraction roller 4 is slidably clamped inside the side chute 26. When the magnetic attraction roller 4 slides to the extreme position, it contacts the limit sealing plate 25. The outer top end of the contact extrusion side plate 8 is arranged in an arc state. When the placing table 12 moves downward to the extreme position, the gear ring 14 contacts the gear 28. The magnetic attraction roller 4 is limited by the side chute 26, so as to prevent the positioning sleeve 5 from tilting.

[0028] When the return spring 32 maintains its normal state, the sliding key 33 moves outward to the end inside the docking groove 23. The extreme distance of the movement of the sliding key 33 does not exceed the inside of the docking groove 23. The height of the nylon contact brush 10 is greater than the overall height of the placing table 12, preventing the sliding key 33 from falling off outward from the inside of the docking groove 23 and improving the support stability of the sliding key 33.

[0029] The insertion hole 13, the extrusion sleeve 17 and the sliding ring 31 are respectively slidably sleeved on the outer circle of the central support rod 19. When the placing table 12 moves downward to the extreme position, the extrusion sleeve 17 drives the sliding ring 31 to extrude and contact the convex block 37 to insert into the inside of the button switch 18, which can drive the sliding key 33 to slide inside the docking groove 23. The central support rod 19 sequentially passes through the inside of the insertion hole 13, the extrusion sleeve 17 and the sliding ring 31, so as to ensure that the placing table 12 and the sliding ring 31 move downward in a straight line.

[0030] The bottom end of the contact extrusion side plate 8 is flush with the top end of the placing table 12. A reinforcing rib is fixedly connected to the bottom end of the sliding insertion rod 7. The second buffer spring 16 is fixedly connected to the inner bottom end of the placing hole 27, and the alignment support rod 15 is located inside the placing hole 27. A reinforcing rib is fixedly installed between the sliding insertion rod 7 and the contact extrusion side plate 8, so as to improve the stability of the sliding insertion rod 7 when pushing the contact extrusion side plate 8.

[0031] Working principle: When in use, first place this device in the designated working area, and then hoist and place the outer steel ring of the external turntable bearing on the placement table 12. At this time, the weight of the turntable bearing will be applied to the placement table 12, causing the placement table 12 to move downward. At this time, when the placement table 12 moves downward, it can drive the magnetic suction roller 4 to slide inside the side chute 26. As the placement table 12 continues to move downward, it can drive the magnetic suction roller 4 to move outward along the outer ring of the limit conical rod 24, causing the positioning sleeve 5 to move outward. At this time, by sliding and inserting the positioning sleeve 5 inside the strengthening bracket 9, when the positioning sleeve 5 moves, it can drive the contact extrusion side plate 8 to move outward at the same time until the contact extrusion side plate 8 contacts the inner wall of the outer steel ring of the turntable bearing, making it convenient to place the inner steel ring of the turntable bearing. At the same time, when the placement table 12 moves downward to the limit position, it can drive the extrusion sleeve 17 to press the sliding ring 31 downward to move to the bottom end of the sliding groove 20. By fixedly connecting the contact bump 37 to the bottom end of the sliding ring 31, when the sliding ring 31 moves to the limit position, it can drive the contact bump 37 to insert into the button switch 18. At this time, by fixedly connecting the connecting wire 30 between the motor 29 and the button switch 18, when the contact bump 37 contacts the button switch 18, the motor 29 can be started. At this time, the gear 28 will rotate. When the placement table 12 moves downward to the limit position, it can drive the gear ring 14 to mesh with the gear 28. When the gear 28 rotates, it can drive the gear ring 14 to rotate. By rotatably connecting the rotating ring 11 to the inner ring of the placement table 12 and fixedly connecting the nylon contact brush 10 to the top end of the rotating ring 11, when the rotating ring 11 rotates, it can drive the nylon contact brush 10 to rotate at the bottom end of the outer steel ring of the turntable bearing, and the length of the nylon contact brush 10 is greater than the top height of the placement table 12, so that the nylon contact brush 10 can complete the cleaning work on the bottom end of the outer steel ring of the turntable bearing, preventing the phenomenon of bruising on the bottom end of the outer steel ring of the turntable bearing. At the same time, by symmetrically and fixedly connecting the connecting rope 36 to the top end of the sliding ring 31, when the sliding ring 31 descends, it can drive the connecting rope 36 to pull towards the bottom end of the sliding groove 20. By fixedly connecting the sliding key 33 to the end of the connecting rope 36 away from the sliding ring 31 and fixedly connecting the gathering clamping plate 35 to the sliding key 33, when the connecting rope 36 moves, it can drive the gathering clamping plate 35 to move towards the inside of the placement table 12 until the gathering clamping plate 35 contacts the outer ring of the outer steel ring of the turntable bearing, thereby preventing the turntable bearing from falling downward during assembly. At the same time, by fixedly connecting the plastic contact piece 34 to the inner top end of the gathering clamping plate 35, it can prevent the gathering clamping plate 35 from having a rigid collision with the outer steel ring of the turntable bearing. When the positioning and placement work of the outer steel ring of the turntable bearing is completed, the hoisting equipment in the external environment can be operated to move the inner steel ring of the turntable bearing directly above this device and then lower it, so that the inner ring of the inner steel ring of the turntable bearing contacts the outer top ring of the contact extrusion side plate 8. At the same time, when the inner steel ring of the turntable bearing is placed downward,It can move downward along the outer circle at the top of the contact extrusion side plate 8. During the process of lowering the inner steel ring of the turntable bearing, it is fixedly connected between the positioning sleeve 5 and the sliding insertion rod 7 through the first buffer spring 6. When the inner steel ring of the turntable bearing shakes, it can drive the contact extrusion side plate 8 and the sliding insertion rod 7 to move inward, avoiding the phenomenon of large-scale deviation of the inner steel ring of the turntable bearing. At the same time, since the outer circle top of the contact extrusion side plate 8 is arc-shaped, it can prevent the phenomenon of collision between the inner steel ring of the turntable bearing and the contact extrusion side plate 8. When this device is in use, when the self-weight of the outer steel ring of the turntable bearing drives the placement table 12 to move downward, it can drive the magnetic attraction roller 4 to expand and move outward on the outer circle of the limit conical rod 24, so that it can drive the contact extrusion side plate 8 to contact the inner wall of the outer steel ring of the turntable bearing, facilitating the vertical placement of the inner steel ring of the turntable bearing downward. At the same time, after transferring the assembled turntable bearing, the alignment support rod 15 is slidably inserted into the placement hole 27. When the pressure on the placement table 12 is lost, the elastic force of the second buffer spring 16 can drive the alignment support rod 15 and the placement table 12 to move upward. At the same time, by the magnetic attraction roller 4 adsorbing inside the limit conical rod 24, when the placement table 12 rises, it can drive the magnetic attraction roller 4 to move upward along the inner wall of the side chute 26, causing the positioning sleeve 5 to contract inward from inside the strengthening bracket 9, completing the reset work of the contact extrusion side plate 8. At the same time, when the extrusion sleeve 17 is separated from the sliding ring 31, the elastic force of the reset spring 32 can drive the sliding key 33 to move outward inside the docking groove 23. At the same time, when the sliding key 33 moves, it can pull the connecting rope 36 and the sliding ring 31 to move upward simultaneously, so as to complete the reset work of the gathering clamping plate 35 expanding outward. At the same time, when the sliding ring 31 rises, it can drive the contact convex block 37 to be pulled out from inside the button switch 18, releasing the inside of the button switch 18, thereby closing the motor 29 and reducing energy waste.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present invention. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A large turntable bearing assembly workbench, including a support drive device (2), characterized in that: The bearing device (1) is slidably inserted into the support drive device (2), and the cooperation buckle device (3) is slidably inserted into the support drive device (2). Moreover, the cooperation buckle device (3) is located below the bearing device (1). The cooperation buckle device (3) includes a sliding ring (31), a return spring (32), a sliding key (33), a plastic contact piece (34), a converging clamping plate (35), a connecting rope (36), and a contact bump (37). The connecting rope (36) is fixedly connected to the top end of the sliding ring (31), and the connecting rope (36) is distributed in a ring shape. The sliding key (33) is fixedly connected to one end of the connecting rope (36) away from the sliding ring (31). The return spring (32) is fixedly connected to the end of the sliding key (33) close to the sliding ring (31). The converging clamping plate (35) is fixedly connected to the other end of the sliding key (33). The plastic contact piece (34) is fixedly connected to the inner top end of the converging clamping plate (35). The contact bumps (37) are symmetrically and fixedly connected to the bottom end of the sliding ring (31); The bearing device (1) includes a magnetic attraction roller (4), a positioning sleeve (5), a first buffer spring (6), a sliding insertion rod (7), a contact extrusion side plate (8), a strengthening bracket (9), a nylon contact brush (10), a rotating ring (11), a placing table (12), an insertion hole (13), a gear ring (14), a positioning support rod (15), a second buffer spring (16), and an extrusion sleeve (17). The strengthening bracket (9) is fixedly installed at the top end of the placing table (12), and the strengthening bracket (9) is distributed in a ring shape. The positioning sleeve (5) is slidably inserted into the inner part of the top end of the strengthening bracket (9). The magnetic attraction roller (4) is rotatably connected to the inner part of one end of the positioning sleeve (5). The first buffer spring (6) is fixedly connected to the inner part of the other end of the positioning sleeve (5). The sliding insertion rod (7) is fixedly connected to the end of the first buffer spring (6) away from the positioning sleeve (5). The contact extrusion side plate (8) is fixedly connected to the side end of the sliding insertion rod (7). The extrusion sleeve (17) is fixedly installed at the center of the bottom end of the placing table (12), and the insertion hole (13) is opened at the center of the placing table (12) and the extrusion sleeve (17). The positioning support rods (15) are symmetrically and fixedly installed at the bottom end of the placing table (12). The second buffer spring (16) is fixedly connected to the bottom end of the positioning support rod (15). The gear ring (14) is fixedly connected to the bottom end of the rotating ring (11). The rotating ring (11) is rotatably connected to the inner part of the placing table (12). The nylon contact brushes (10) are equidistantly and fixedly connected to the rotating ring (11); The described support and drive device (2) includes a push button switch (18), a central support rod (19), a sliding groove (20), a support base (21), a wire outlet groove (22), a docking groove (23), a limiting conical rod (24), a limiting sealing plate (25), side sliding grooves (26), placing holes (27), gears (28), motors (29) and connecting wires (30). The sliding groove (20) is opened at the center of the top end of the support base (21). The central support rod (19) is fixedly installed at the center of the interior of the sliding groove (20). The limiting conical rod (24) is fixedly installed at the top end of the central support rod (19). The side sliding grooves (26) are symmetrically opened at the side ends of the limiting conical rod (24). The limiting sealing plate (25) is fixedly connected to the center of the top end of the limiting conical rod (24). The docking grooves (23) are symmetrically opened inside the side ends of the support base (21). The wire outlet grooves (22) are symmetrically opened between the docking grooves (23) and the sliding groove (20). The placing holes (27) are symmetrically opened at the four corners of the top end of the support base (21). The motors (29) are symmetrically and fixedly installed on the side ends of the support base (21). The gears (28) are fixedly installed on the motors (29). The push button switches (18) are symmetrically and fixedly connected to the bottom end inside the sliding groove (20), and the connecting wires (30) are fixedly connected between the motors (29) and the push button switches (18); Lift and place the outer steel ring of the external turntable bearing on the placing table (12). At this time, the weight of the turntable bearing will be applied to the placing table (12), causing the placing table (12) to move downward. At this time, when the placing table (12) moves downward, it drives the magnetic suction roller (4) to slide inside the side sliding groove (26). As the placing table (12) continuously moves downward, it drives the magnetic suction roller (4) to move outward along the outer circle of the limiting conical rod (24), causing the positioning sleeve (5) to move outward. At this time, by sliding and inserting the positioning sleeve (5) inside the strengthening bracket (9), when the positioning sleeve (5) moves, it drives the contact extrusion side plate (8) to move outward simultaneously until the contact extrusion side plate (8) contacts the inner wall of the outer steel ring of the turntable bearing, facilitating the placement work of the inner steel ring of the turntable bearing; Meanwhile, when the placement table (12) moves downward to the limit position, it drives the extrusion sleeve (17) to press the sliding ring (31) downward to move to the bottom end of the sliding groove (20). The contact bump (37) is fixedly connected to the bottom end of the sliding ring (31), so that when the sliding ring (31) moves to the limit position, it drives the contact bump (37) to insert into the interior of the push-button switch (18). At this time, through the connecting wire (30) fixedly connected between the motor (29) and the push-button switch (18), when the contact bump (37) contacts the push-button switch (18), the motor (29) is started. At this time, the gear (28) will rotate. When the placement table (12) moves downward to the limit position, it drives the gear ring (14) to mesh with the gear (28), so that when the gear (28) rotates, it drives the gear ring (14) to rotate. The rotating ring (11) is rotatably connected to the inner ring of the placement table (12), and the nylon contact brush (10) is fixedly connected to the top end of the rotating ring (11), so that when the rotating ring (11) rotates, it drives the nylon contact brush (10) to rotate at the bottom end of the outer steel ring of the turntable bearing. And the length of the nylon contact brush (10) is greater than the top height of the placement table (12), so that the nylon contact brush (10) completes the cleaning work on the bottom end of the outer steel ring of the turntable bearing, preventing the phenomenon of bruising on the bottom end of the outer steel ring of the turntable bearing; When the placement table (12) is driven to move downward by the self-weight of the outer steel ring of the turntable bearing, it drives the magnetic adsorption roller (4) to expand and move outward on the outer ring of the limit conical rod (24), so that it drives the contact extrusion side plate (8) to contact the inner wall of the outer steel ring of the turntable bearing, facilitating the vertical placement of the inner steel ring of the turntable bearing downward. At the same time, after the assembled turntable bearing is transferred, the alignment support rod (15) is slidably inserted into the interior of the placement hole (27). When the pressure on the placement table (12) is lost, through the elasticity of the second buffer spring (16), it drives the alignment support rod (15) and the placement table (12) to move upward; Meanwhile, by the magnetic adsorption roller (4) adsorbing inside the limit conical rod (24), when the placement table (12) rises, it drives the magnetic adsorption roller (4) to move upward along the inner wall of the side sliding groove (26), causing the positioning sleeve (5) to contract inward from the interior of the strengthening bracket (9), completing the reset work of the contact extrusion side plate (8). At the same time, when the extrusion sleeve (17) is separated from the sliding ring (31), through the elasticity of the reset spring (32), it drives the sliding key (33) to move outward inside the docking groove (23). At the same time, when the sliding key (33) moves, it pulls the connecting rope (36) and the sliding ring (31) to move upward simultaneously, so that the work of expanding and resetting the gathering clamping plate (35) outward is completed. At the same time, when the sliding ring (31) rises, it drives the contact bump (37) to be withdrawn from the interior of the push-button switch (18), so as to release the interior of the push-button switch (18), thereby turning off the motor (29).

2. A large turntable bearing assembly workbench according to claim 1, characterized in that: The magnetic attraction roller (4) is slidably clamped inside the side chute (26). When the magnetic attraction roller (4) slides to the extreme position, it contacts the limit sealing plate (25). The outer top end of the contact extrusion side plate (8) is arranged in an arc state. When the placement table (12) moves downward to the extreme position, the gear ring (14) contacts the gear (28).

3. A large turntable bearing assembly workbench according to claim 2, characterized in that: When the return spring (32) maintains its normal state, the sliding key (33) moves outward to the end inside the docking groove (23). The extreme distance of the movement of the sliding key (33) does not exceed the inside of the docking groove (23). The height of the nylon contact brush (10) is greater than the overall height of the placement table (12).

4. A large turntable bearing assembly workbench according to claim 3, characterized in that: The insertion hole (13), the extrusion sleeve (17) and the sliding ring (31) are respectively slidably sleeved on the outer circle of the central support rod (19). When the placement table (12) moves downward to the extreme position, the extrusion sleeve (17) drives the sliding ring (31) to squeeze the contact bump (37) into the inside of the push button switch (18), driving the sliding key (33) to slide inside the docking groove (23).

5. A large turntable bearing assembly workbench according to claim 4, characterized in that: The bottom end of the contact extrusion side plate (8) is flush with the top end of the placement table (12). The bottom end of the sliding insertion rod (7) is fixedly connected with a reinforcing rib. The second buffer spring (16) is fixedly connected to the inner bottom end of the placement hole (27), and the alignment support rod (15) is located inside the placement hole (27).

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